Well logs of the Coastal Plain of Georgia

GEORGIA STATE DIVISION OF CONSERVATION
DEPARTMENT OF MINES, MINING AND GEOLOGY GARLAND PEYTON, Director
THE GEOLOGICAL SURVEY Bulletin Number 70
WELL LOGS OF THE COASTAL PLAIN OF GEORGIA
by Stephen M. Herrick, Geologist
United States Geological Survey
Prepared cooperatively by the U. S. Geological Survey ATLANTA 1961

GEORGIA STATE DIVISION OF CONSERVATION
DEPARTMENT OF MINES, MINING AND GEOLOGY GARLAND PEYTON, Director
THE GEOLOGICAL SURVEY Bulletin Number 70
WELl"' LOGS OF THE COASTAL PLAIN OF GEORGIA
by Stephen M. H errick, Geologist
United States Geological Survey
Prepared cooperatively by the U. S. Geological Survey ATLANTA 1961

LETTER OF TRANSMITTAL
Department of Mines, Mining and Geology
May 2, 1961
His Excellency, S. Ernest Vandiver Governor of Georgia and Commissioner Ex-Officio State Division of Conservation Atlanta, Georgia Dear Governor Vandiver:
I have the honor to submit herewith Georgia Geological Survey Bulletin No. 70 "Well logs of the Coastal Plain of Georgia by Dr. Stephen M. Herrick of the Ground Water Branch, Water Resources Division, United States Geological Survey.
This report contains much valuable data about the geology and water-bearing formations of the Coastal Plain of Georgia. The ground-water information will be of tremendous aid to the cities, industries, farmers, and well drillers of the State in their search for water supplies. The geologic information will help those who are engaged in the search for petroleum in Georgia. The report includes a map showing the location of the wells.
I believe that this report will be one of the most valuable contributions in the search for water and oil that we have prepared in cooperation with the Federal Survey.
Very respectfully yours,
Garland Peyton, Director
iii

1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
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CONTENTS

Page

Introduction -- ---- -

___ . _. ___ _ 1

Acknowledgments _____________________ 2

Treatment of Well Samples ______ 2

Correlation ______ ------------------------- __ 3

Well Logs ----------- -- . --- ------------------ 5 Appling County ______________________ _ 5 GGS 50 ------------- __________________________ 5 GGS 148 ------------------------------------ 6 GGS 161 ------------------------------------ 10 Atkinson County __ .. ___________ 11 GGS 107 ______ --------------------------- 11 GGS 425 -------------------------------------- 14

Bacon County _

16

GGS 58 ______

16

Baker County _

17

GGS 479 ____ _

17

Ben Hill County _

17

GGS 154 __ _

17

GGS 160 __

19

GGS 355 ___

20

Berrien County

21

GGS 159 __

21

GGS 421 __

21

Bibb County

23

GGS 7 ___ _

23

GGS 8 ___ _

24

GGS 230 _

24

GGS 357 _

25

GGS 361 _

26

Bleckley County

27

GGS 106 _

27

GGS 195 _

27

GGS 277 _

29

Brantley County

30

GGS 9 __ _

30

GGS 90 __

31

Brooks County

32

GGS 3 _

32

GGS 21

33

GGS 77 _

33

GGS 87 __

34

GGS 184 _

35

GGS 469 _

37

Bryan County

38

GGS 65 __

38

GGS 459 __

39

Bulloch County

40

GGS 81 __ _

40

GGS 378 .

42

GGS 430 __

43

GGS 432

45

GGS 553 _

46

GGS 571 _

47

Burke County .

49

GGS 131 __ _

49

GGS 139 __

50

v

Page

GGS 220 _

50

GGS 316 _____ _ ________ ___

52

GGS 391 __ ___

___ ______ 53

GGS 392 ____ _ __________ .. _

54

GGS 520 _______ _

___ ________ 55

Calhoun County ____ __ __ ___ __ _____ 56

GGS 192 ----------------- _ _____ __ __ 56

GGS 330 ----- _-- ---- ______ _______ 58

GGS 331 _____

_ __ _ _______ _ 59

GGS 353 ____ ----------------- ___________ 61

Camden County __ __ __ _____ __________ 63

GGS 54 ____

. _____________ _____ 63

GGS 364 _

__________ 65

GGS 365 _

66

GGS 455 _

68

Candler County

69

GGS 429.

69

GGS 574 _

70

GGS 581 _

72

GGS 582 _____

73

Charlton County

7 4

GGS 93 ______ ___ ___

7 4

GGS 185 __ _

__ ____ ___ 75

GGS 453 ____

76

Chatham County __ __________ 78

GGS 1 __

78

GGS 35 __

___ __________ 79

GGS 61 ___ __

81

GGS 62 _________

83

GGS 80 _____ _

86

GGS 125 __ __

88

GGS 377 ___ _ _

89

GGS 379 __

91

GGS 380 _______ . ___ ______ _ 92

GGS 381 _ ______ ____ ____ _ _ 94

GGS 394 __ ____ _______ ___ __ 97

GGS 395 __ ___ _____ __ ___ _____ __ 98

GGS 396 __ ___ . _____ __

99

GGS 506 __ _____

__ 101

GGS 523 __ ___

_ __ 103

GGS 535 __ _

_ 105

GGS 561 _ GGS 562 __

106 __ 107

GGS 563 _

___ 108

Chattahoochee County GGS 18 __ __

_ 110 _ 110

GGS 332 _ GGS 341 _

.. _ 111 _ 112

Clay County _ GGS 402 _
GGS 435 GGS 464 _ GGS 556 _

- 114 114
- 116 - 117 - ...... 118

Clinch County _. GGS 86 ----- _ GGS 124 __

--- 120 ......... 120
121

CONTENTS (Cont'd.)

Page

Coffee County ____________________________ 122 GGGGSS 223463 -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_--_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 112223

GGS 434 ----------------------------------- 124

GGS 445 __

____________ 125

Colquitt County ___________________________ 128

GGS 22 --------------------------------------- 128 GGS 170 ____ --------------------------------- 129 GGS 175 -------------------------------------- 132

Columbia County -------------------------- 133 GGS 264 ________ _____ ____________ 133

Cook County ---------------------------------- 134 GGS 25 --------------------------------------- 134 GGGGSS 31918---_-_-_-_-__-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_---_-_-_-_-_-_-_-_--_-_ 113356

GGS 122 ------------------ ___ _________ 137

Crisp County -------------------------------- 138

GGS 155 ----------------------------------- 138

GGS 216 ------------------------------------- 140

GGS 225 ______

__________ 140

GGS 226 _

_____________ 141

GGS 245 _ _____ _ _______________ 142

GGS 249 _ ____________________ 143

GGS 250 _ _ __ __ _____ __ _ 144

GGS 251 _ ___ _______

__ 145

GGS 390 _

_ ____ 146

Decatur County ___ GGS 49
GGS 57_ GGS 168 _ GGS 228 __

______ 149 _ _ ____ 149
_____ 150 _____ __ 152 __________________ 155

Dodge County _ GGS 222 _ GGS 233 _ GGS 240 _ GGS 267 _ GGS 269 _ GGS 273 _

156 __ 156 __ 157 _______ 157 _ __ 158 ______ 159 _____________ 160

Dooly County _ GGS 143 _ GGS 241 _ GGS 246 _ GGS 257 _ GGS 258 GGS 306

_ _ ___ 161 _ _ 161 _ _ 163 _ 163
_____ _ ___ 164 _____________ 165 __ ______ 166

GGS 619 _

___ 167

Dougherty County GGS 11 _ __ _

_ 170 _______ 170

GGS 248 _ GGS 261 _ GGS 290 _ GGS 405 ___

__ 172 __ 175 _________ 178 _____ 178

Early County

__ 181

GGS 121 _

__ 181

GGS 138 _

184

GGS 234 __

_ ____ _

185

GGS 321 ____________ _ __ __ __ 186

GGS 351 ___________________________ 187

vi

Page

GGS 358 _ __________________________ 189

GGS 437 _

_____________ 190

GGS 483 _______ __ ____ _ __ _______ 193

Echols County __________________ 195

GGS 189 ____

__ _____ 195

Effingham County __ _____________ 198 GGS 211 ____________________________________ 198
GGS 457 ____ _ _____________________ 199 GGS 458 ___________________________ 201 GGS 569 ______ ___ __________________ 202

Emanuel County _____________________ 203

GGS 176 _ _

___________________ 203

GGS 372 _ _ _ _ ____ 205

GGS 373 ______

_ _________ 207

GGS 567 _____ ___ ___________________ 208

GGS 568 _

___ _________________ 209

Glynn County ____

_______ 210

GGS 5 ____ __

__ __ 210

GGS 20 ___

_ ____ 212

GGS 197 __ _ __________ _ _ __ 213

GGS 362 _

_____ _______ ____ 214

GGS 376 _

_ _ 216

GGS 431

__ 217

GGS 452

__________ 218

GGS 530 _

______________ 219

Grady County _ GGS 140 __ GGS 141 __ GGS 205 _ _ _
GGS 493 _ GGS 494 _

______ __ 221 ___ 221
____ _ 222 ____ ______ 223
__ ____ 224 ____ 225

Houston County _ GGS 53 _ GGS 194 GGS 318 _
GGS 370 __ GGS 374 _ GGS 414 __

__ 226 _ _ 226 _____ 227 ______ 229
____ 230 ____ 231 _ __ _ 232

Irwin County GGS 274 ___

_____ 233 _ 233

Jeff Davis County _ GGS 157 __

_____ 234 __ 234

Jefferson County GGS 133 __
GGS 219 _
GGS 480 _ GGS 532 __ GGS 554 __ _

__ 235 235
__ 236
_ _ 237 ____ 239 ____________ 240

Jenkins County _ GGS 227 ___ _

___ 242 _ ___ 242

Lanier County
GGS3~-

____ 243
~2~

Laurens County GGS 438 _ __

_ 244 _ 244

Lee County GGS 74 GGS 270 _

_ ____

246 _ 246 __ 248

r

CONTENTS ( Cont'd.)

Page

GGS 271-------------------------- 249 GGS 286 -------------------------------------- 250 GGGGSS 249294 -__-_-_-_-_------_-_-_-_-_-__-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ 225501

Liberty County ------------------------------ 253
GGS 6 ------------------------------------------ 253 GGS 38 --------------------------------------- 255 GGS 66 ---------------------------------------- 256 GGS 72 ---------------------------------------- 257 GGS 363 -------------------------------------- 258 GGS 460 ------------------------------------- 262 GGS 548 _____ _____ ------------------------ 263

Long County ---------------------------------- 264 GGS 67 ---------------------------------------- 264
Lowndes County ---------------------------- 265 GGGGSS 1254 -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-__-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_- 226657

GGS 27 ---------------------------------------- 267 GGS 40 ---------------------------------------- 268 GGS 42 ---------------------------------------- 269 GGS 47 ---------------------------------------- 270 GGS 78 _______ _________ ----------------- 270 GGS 79 ______________ ------------------------- 271
GGS 173 -------------------------------------- 272 GGS 179 ______ ------------------------------ 274 GGS 182 _______ ___ _ ___________________ 274

GGS 198 ------------------------------------- 276 GGS 356 ___________ -------------------------- 276

GGS 404 ______ ---------------------------- 277

GGS 412 __ ----------------------------------- 278 GGS 500 ________ --------------------------- 280 GGS 511 ________________ ------------------- 281

Mcintosh County __________________________ 282

GGS 84 ______ _---------------------- 282 GGS 88 __________ -------------------- 283

GGS 596 __

_ ----------------- 284

Macon County __ ___ ________ _____________ 285 GGS 60 __ ______ _ _ _ _ __________ 285

GGS 145 ____ __ _____

________ 287

GGS 229 _

___ ___________ 288

GGS 408 _ _ ___ _ ____ ____________ 289 GGS 422 ____________________________ 291

Marion County ______________________ 292

GGS 329 _ ___ __ ____ _______ ___ ____ ___ 292

GGS 347 _ _

__ -------------- 293

GGS 388 _______ ____ _ __________ 293

GGS 409 ________ _

_________ 294

GGS 427 ___________ ___ _______ 295

GGS 443 __ _____ ______ _________ 296

GGS 476 _______ __ _ ______________ 296

Miller County _________________________ 298 GGS 112 ____________ _ ___ _ ____ 298

Mitchell County _____________________ 299

GGS 100 _________________________________ 299

GGS 109 _

_________________ 300

GGS 218 __ _____

__

_____ 303

GGS 400 ________ _______________ __ 304

vii

Page

GGS 417 _____ ------------------ _____ 304 GGS 564 ----------------------------------- 305 GGS 620 ---------------------------------- 306 Montgomery County ____________________ 307 GGS 319 _______________,____________________ 307
GGS 450 ----------------------------------- 308 GGS 514 ----------------------------------- 309 GGS 515 --------------------- -------------- 310 GGS 600 -------------------------------------- 311
Muscogee County -------------------------- 313 GGS 235 ------------------------------------ 313
Peach County -------------------------------- 314 GGS 348 -------------------------------------- 314 GGS 369 ------------------------------------ 315 GGS 426 -------------------------------------- 316
Pierce County -------------------------------- 318 GGS 119 ------------------------------------- 318 GGS 120 -------------------------------------- 321 GGGGSS 546156 _--_-_-_-_-_-_-_-_--_-_-_-_-_-_-_-_-_--_-_-_-_-_-_-_-_--_-_-_-_-_-_-_-_- 332223

Pulaski County ------------------------------ 325 GGS 237 ----------------------------------- 325 GGS 238 ------------------------------------- 326 GGS 242 _ ---------------- _____________ 327 GGS 256 __ ______________ _____________ 327
GGS 339 ------------------------------------- 328 GGS 472 ------------------------------------ 330
Quitman County --------------------------- 333 GGS 436 ------------------------------------ 333 GGS 502 ------------------------------------ 334
Randolph County __________________________ 336
GGS 552 ---------------------------------- 336 Richmond County ________________________ 337
GGS 129 ---------------------------------- 337 GGS 130 ---------------------------- ______ 338 GGS 309 ___ ------------------------------ 339 GGS 371 ___ --------------------------- 340 GGS 526 _______________ _______________ 341

Schley County _____ ---------------------- 342
GGS 75 ------------------------------------- 342 GGS 174 ------------------------------------- 343 GGS 312 ________ ------------------------- 344 GGS 315 ------------------------ __________ 345

Screven County ---------------------------- 346 GGS 295 ------------------------------------- 346 GGS 413 ------------------------------------- 348 GGS 462 ------------------------------------ 349
GGGGSS 559708 -_-_-__-_-_-_-_-_-_-_---_-_-_-_-_-_------_-_-_-_-_-_-_-_-_-_-_-_- 335510

Seminole County ________________________ 353 GGS 149 ________ __ _ ______________ 353

GGS 187 _______

---------------- 353

Stewart County __________________________ 356

GGS 451 _

------------------ 356

GGS 478 ---------------------------------- 357

CONTENTS (Cont'd.)

Page

Sumter County ----------------------------- 358 GGS 137 ------------ --------- ------------ 358 GGS 147 ------------------------------------ 359 GGS 215 ------------------------- ________ 361
GGS 280 ---------------------------------- 362 GGS 281 ------------------------------------ 362 GGS 283 ________ --------------------------- 363
GGS 291 -------------------------------------- 364 GGS 296 ------------------------------------- 365 GGS 303 --------------------- ______________ 365
GGS 333 --------------------------- _______ 366 GGS 342 ------------------------------------- 368 GGS 440 ------------------------------------- 369
GGS 442 ------------------------------------ 371 GGS 504 ----------------------------------- 373

Talbot County -------------------------------- 374 GGS 403 ----------- ------------------------- 374

Tattnall County ---------------------------- 375 GGS 180 ------------ ----------------------- 375 GGS 522 ------------------------- ___________ 377 GGS 583 _________ _______ ________ ________ 378

Taylor County __

_____________ 379

GGS 428 _______ _ _______ _ ____________ 379

GGS 492 _________

____________ 379

GGS 499 -------

____________ 380

GGS 533 --------

_____________ 381

Telfair County _ __ __ __ ____ ____ 381

GGS 375 _______ _

_____ __ __ 381

GGS 507 ______

________ 384

Terrell County

_____________ 385

GGS 213 _____________ _____________ 385

GGS 285 _________ ___ __ __ __ ________ 388

GGS 350 _____ _ _______ _______ 388

GGS 352 __ ______

____ _____ 390

GGS 368 __________

_ ________ 391

GGS 406 _____

__ 392

GGS 407 _____

________ 394

GGS 503 ______

_ __ 396

Thomas County GGS 19 ______ ___

____________ 397 ____________ 397

GGS 132 ____ ---------------- _______ 398 GGS 401 ______ ________ ___ ________ ___ 400 GGS 495 ______ _____________________ 401
Tift County _ _____ ___ __ _____ ____________ 402

GGS 82 _____ ----------------------------- 402 GGS 292 ----------------------------------- 404

Toombs County----------------------------- 405 GGS 95 -------------------------------------- 405
Treutlen County ___________________________ 408 GGS 127 _ _____________________________ 408

Turner County _ -------------------------- 410 GGS 2 ---------------------------- ___________ 410 GGS 13 ____ _____________________ 411

Page

GGS 164 ____ _

__ _____ 412

GGS 210 __ __ _ GGS 557 ________ GGS 565 _________

_ 412 _ 413 _____ 415

Twiggs County ______________________ 416 GGS 354 ___________________________ 416 GGS 360 _______________________________ 417
GGS 415 ______________ _ _______________ 418 GGS 416 __________ ______________ 418

Ware County ____ GGS 36 _________________
GGS 366 ______________ GGS 527 _______________ GGS 538 ________________

_______________ 419 ____________ 419
_______ 420 ____________ 422
_____ 423

Washington County ____ ________________ 424

GGS 94 ------------------- ____ _____ _______ 424

GGGGSS 122532 -_-_-_-_-_-_-_-__-_-_-_-_-_-_-_-_-_-------------_-_-_--_-_- 442268 GGS 433 __________ _________ _____ ____ __ 429

GGS 521 --------------Wayne County _
GGS 52 _____________
GGS 96 ____________ __
GGS 262 __________ _____

_ __ __ 429 _______ 430 _ 430
___ 434
___ 435

GGS 297 ______ GGS 454 ________ GGS 466 __ ___ __ __

_ 436 _ 438 _ _ 439

GGS 555 ______ __

_ _ 440

Webster County ___ GGS 323 ______________ _

_ __ 442 __ 442

GGS 488 ____________ __

443

GGS 559 ---------------

___ 444

Wheeler County ___ _

___ _ 445

GGS 92 _______________ __ __ __ _ __ _ 445

GGS 336 -------GGS 337 ----------

__ 446 _________ 449

Wilcox County _ _

_ ________ 450

GGS 68 __________ _

__ __ _ _ _ 450

GGS 70 ---------- ___ GGS 136 ________ ____

_ _ _ 450 _ _ __ 451

GGS 142 -------------

__ 452

GGS 349 --------- ___ ______ ___ _ 452

Wilkinson County __

_____ 453

GGS 441 ___________ _____________ 453

GGS 529 --------- ____ ------------- 454 Worth County__________ ______________ 455

GGS 232 ------- ___________________ 455 GGS 456 ________ _______________________ 455 GGS 471 _______ ____________ _____________ 456

Beaufort County, S. C. _______________ 457 GGS 385 __ ___ ___ ________________ 457 GGS 566 ___ __ ____ ______ __________ 459

References

_______________________ 461

ILLUSTRATIONS
Figure 1. Well location map, Coastal Plain of Georgia ____ viii

_________ In Pocket

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA
By
Stephen M. Herrick
Introduction
Nearly all cities and all rural dwellers of the Coastal Plain of Georgia obtain their water supply from wells. This section of Georgia has some of the most extensive and productive aquifers in the United States. In the years since World War II, the development of the ground-water resources has more than doubled in some parts of the Coastal Plain, and it is considered as the key to future economic development of other parts as well.
The study of the lithologic characteristics and stratigraphic extent of the surface and subsurface formations of an area is an important adjunct to our knowledge of the occurrence and availability of ground water. One purpose of this study, therefore, was to correlate subsurface information in order to know the lithologic characteristics and stratigraphic extent of the water-bearing formations of the Coastal Plain. It is hoped that this information will prove helpful in the planning of future geologic and ground-water studies.
Another purpose of this study was to make available to the well drillers and the public information concerning the depth, thickness, and lithology of the water-bearing formations. Where quality-of-water problems exist, an attempt has been made to note this fact in the log, thereby pointing to the need for additional ground-water investigations.
This report includes well logs representative of all the Coastal Plain counties. The information may be used as a guide to those individuals or communities planning to develop the ground-water resources of their county, to tell them the type of material to be drilled through, the probable water-bearing zones, and the probable depth of a completed well.
This report contains a total of 354 well logs. The basis for these logs is well cuttings, or well samples, which have been collected by the Geological Survey during the period 1938 to 1960. Prior to 1938, samples of "wildcat" oil tests were collected by the Georgia Geological Survey and the descriptions of some of them are included.
The logs are the result of studies carried on by the author intermittently for approximately 13 years and full time since 1956. A few important logs, particularly those of certain oil tests, have necessarily been omitted from this report. Others have been published and may be consulted in the literature, and hence do not require repetition here.
This report serves to bring up to date certain information about the geology of the Coastal Plain in Georgia. Many stratigraphic problems still exist. This report will serve as a basis for future, more detailed, investigations dealing with some of these problems.

2

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Acknowledgments
The report was prepared as a part of the ground-water investigations of Georgia being made by the U.S. Geological Survey in cooperation with the Georgia Department of Mines, Mining, and Geology, Garland Peyton, Director. Ground-water investigations of the Geological Survey are made under the general supervision of P. E. LaMoreaux, Chief, Ground Water Branch. Acknowledgment is made of the willing cooperation of many well drillers who furnished the well cuttings for the logs. Electric logs were an important aid to this study. Many electric logs were furnished by Captain Peyton from the files of his Department. Others were made by personnel of the Ground Water Branch.

Treatment of Well Samples
The wells described herein were selected partly on the basis of geographic location so that at least one well log would be available for every county, and partly with regard to the completeness of well samples and extent of the geologic section penetrated. All samples were examined under the binocular microscope. The gross lithology is described and some of the microfossils, chiefly Foraminifera, are listed. Preparation of the individual samples prior to examination followed the standard procedure well known to micropaleontologists the world over.
The Foraminifera represent the paleontologic control utilized in this study. The author made all the identifications shown. Of the individual species observed, only a relatively small number are included in the logs. However those listed represent the principal diagnostic guide fossils and first observed occurrences. Individual species representative of the formations penetrated during drilling were identified from comparative surface (outcrop) material wherever possible, otherwise from published descriptions and figures bearing on the subject. In many instances the specific identity of various diagnostic foraminiferal species, chiefly the "larger" Foraminifera, was not known. In such cases the specific name was omitted and only the generic name utilized, such as Lepidocyclina sp., Asterocyclina sp., Operculinoides sp. Moreover, complete scientific terminology for the individual species was not considered necessary for purposes of this report, and the nomenclature does not necessarily conform with present usage throughout.
Representative specimens of the foraminiferal species included in this report are deposited at the U.S. National Museum, Washington, D. C.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

3

Correlation
Formational names used in this report are those accepted by the U.S. Geological Survey as applicable to the southeastern Gulf Coast. In the use of the terms Flint River and Suwannee, however, it is believed that more work is needed before the true stratigraphic positions of these formations in Georgia is fully understood. To avoid difficulties these units are referred to as Oligocene undifferentiated. In general, the same can be said of certain other nomenclatural problems of the Tertiary strata of the Coastal Plain of Georgia, such as Pleistocene to Recent, Pliocene to Recent, Miocene, and lower Eocene. In this report the heading Gosport sand is not generally employed. Although the Gosport sand is a definite mappable unit in parts of the Coastal Plain, particularly in Houston County, it cannot always be differentiated from cuttings in the subsurface. For this reason it was thought best usually to include it as part of the Lisbon formation or Claiborne group, undifferentiated, as the case may be.
The strata of Cretaceous age in the southeast have been described in reports by other investigators, including W. Storrs Cole, Paul and Esther Applin, and others. In instances where Cretaceous strata were penetrated, the logs either were discontinued short of total depth or that part of the section summarized into generalized divisions such as post-Tuscaloosa, Tuscaloosa formation, and in rare instances Lower Cretaceous (?) . In the logs of such wells, the first observed occurrences of key fossils in the post-Tuscaloosa part of the sections are listed in order to help other workers attempting to reconstruct the geologic history of the Coastal Plain. In wells penetrating rocks of pre-Cretaceous age no attempt is made to describe them in any detail. In most instances such rocks are designated crystalline rocks, or basement complex undifferentiated. In others the logs are discontinued short of the basement complex. The strata of Tertiary age are the most important sources of ground water in the Coastal Plain as a whole, and the geologically older beds of Cretaceous age are important as water-bearing formations only along the upper limits of the Coastal Plain, immediately downdip from the Fall Line. Greater emphasis was therefore placed on the rocks of Tertiary age.
In the lithologic descriptions of the well cuttings, the dominant type of sediment is mentioned first, followed by the other types according to the degree of representation in the samples.
Elevations employed in this report refer to mean sea level. Many elevations were obtained by means of an aneroid barometer and hence are subject to a possible error of several feet. Other elevations represent average figures, taken from highway maps issued by the Georgia Highway Department. For reconstructing subsurface conditions by means of cross sections, where only relative elevations are needed, it is felt that elevations of this order of accuracy are adequate. As time goes by and new topographic maps appear, these elevations will gradually be replaced by more accurate figures.
The well logs are listed alphabetically by counties. Each log has the designation GGS (Georgia Geological Survey) followed by the number assigned to the well, as GGS 436. No attempt was made to list part of a section represented by a missing interval (missing samples). Where the missing interval occurs at the top of a formation, the designation In as "In middle Eocene" was used.

4

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

The word In also precedes those units, the top of which could not be determined from study of the samples even though all the samples were available.
The descriptive part of each log is followed by a summary of the stratigraphy and a listing of the potential water-bearing zones penetrated in the well.
The locations of wells included in this report are shown on the map (fig. 1.) where they are designated by their numbers, the letters GGS being omitted. The symbols differentiate between an oil test and a water well and between definite and indefinite locations. Each well shown as indefinite in location cannot be plotted in its true geographic location because it is not known, but each has been located as closely as possible in the locality indicated.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

5

APPLING COUNTY

Location: 650 ft. west of Southern Depot and 110 ft. north of Southern R.R. in city of Baxley
Owner: No. 3 City of Baxley Driller: Gray Well and Pump Corporation Drilled: February 1942

Well No.: GGS 50 Elev.: 204

Thickness Depth

(feet)

(feet)

No samples

40

40

In Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained; some very sandy clay, pale-

green or mottled _____________

___________________ _

55

95

Miocene (Undifferentiated):

Clay: pale-green, sandy, phosphatic at depth; interbedded

sand and limestone _

____________ _____ _______

393

488

Sand, fine to medium-grained with many black phosphatic pebbles at 225-275.

Sand, fine to coarse-grained, abundant black phosphatic pebbles at 415-430.

Sand as above; and many fragments of limestone, gray to white, dense (calcitized) at 430.

Sand, fine to coarse-grained, with abundant black phosphatic pebbles at 465-475.

Limestone: gray to white, sandy, phosphatic, fossiliferous,

dolomitized at depth ____ ______________________

_________________ _

27

515

Oligocene (Undifferentiated):

Limestone: gray, dense (much calcitized) nodular, fossilifer-

ous (Foraminifera) _________ ______________________ ____________________________________ 75

590

Rotalia byramensis var., Asterigerina sp., Pyrgo sp. at 515525.

No samples ------------------------------------------------- ------------------------------------

20

610

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: reddish-brown, extremely dense and crystalline

(highly calcitized), fossiliferous (many Foraminifera)

20

630

Gypsina globula, Operculinoides sp., Asterocyclina nassauensis at 610-620.
Operculina mariannensis at 620-630.

6

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Limestone: light-gray, extremely dense and crystalline (high-

ly calcitized), fossiliferous (as above)

90

Pseudophragmina sp., Lepidocyclina sp. at 700-710.

Limestone: white, soft and chalky in streaks; otherwise considerably calcitized and crystalline, fossiliferous (as above) __ 100

Heterostegina ocalana at 760-770. Amphistegina pinarensis var. at 770-780.

Limestone: light-gray, extremely dense and crystalline, as

interval 630-720

_ ____ __

__ ___

20

Depth (feet)
720
820
840

Summary:

No samples

_____________ _

In Pliocene to Recent (undifferentiated) Miocene (undifferentiated) __ Oligocene (undifferentiated)
No samples -------------------------------In upper Eocene (Ocala limestone) __ _

40

40

55

95

420

515

75

590

20

610

280

840

Limestone _

Potential Water-Bearing Zones:

325

840

APPLING COUNTY

Location: 2,433 ft. north, 2,796 ft. west of southeast corner of Land Lot 522, 2nd Land District
Owner: No.1 W. E. Bradley Driller: Felsenthal and Weatherford Drilled: July 1947

Well No.: GGS 148 Elev.: 229

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated): Sand: fine to medium-grained, angular

10

10

No samples _______________

50

60

Clay: pale-green, sandy; interbedded sand, fine to medium-

grained, angular, phosphatic at depth ____

300

360

Jet-black phosphatic pebbles abundant at 180-210.

Limestone: cream, somewhat saccharoidal and crystalline,

rather dense, sandy, phosphatic, fossiliferous at depth

(macroshells) ; scattered beds of sand, as above

120

480

Macroshells at 450-470. Limestone: as above, but somewhat dolomitized _

40

520

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

7

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: light-gray, much calcitized, massive, nodular, fos-

siliferous (some megafossils, echinoid and bryozoan re-

mains, and Foraminifera)

_________________ _

120

Rotalia mexicana var. at 540-550. Gypsina globulat, Asterocyclina sp. at 560-570. Dictyoconus1 sp. at 580-590.

Depth (feet)
640

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, more porous than above, fossiliferous

(macroshells, echinoid and bryozoan remains, and Fora-

minifera)

____ _____ ____________

_____ ____ ___ __

__ ______ 120

760

Lepidocyclina sp., Camerina sp. at 640-650. Operculinoides ocalanus, Asterocyclina sp. at 650-660. Camerina striatoreticulata at 700-710.

Limestone: as above, but much calcitized, crystalline, mas-

sive, fossiliferous (Foraminifera at certain levels)

160

920

Operculina mariannensis at 780-790.

Various species of larger Foraminifera abundant at 800900.

In Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: cream, much calcitized, somewhat granular in

texture, rather massive, coarsely glauconitic at depth,

cherty at certain levels; interbedded limestone, gray, dense,

crystalline, massive, sandy, glauconitic (finely dissemi-

nated), fossiliferous (macroshells and bryozoan remains

at certain horizons) ; sand, fine to medium-grained, angu-

lar, somewhat phosphatic__

______________________ 430

Cibicides westi at 1260-1270. Operculinoides sp. at 1300-1310.

Sand: fine to coarse-grained, angular; marl, gray, somewhat

carbonaceous, micaceous, glauconitic

________________ __________________ 80

Limestone: white, dense, much calcitized, coarsely glauconitic,

fossiliferous; dolomitic limestone, dark-brown, saccharoidal,

glauconitic

_______________ ___________

______________ 100

Macroshells common to abundant at 1450-1530.
-'Reworked ( ? ) fossil of middle Eocene age.

1,350 1,430 1,530

8

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Tallahatta Formation:

Thickness (feet)

Sand: fine to coarse-grained, angular, abundantly glauconitic; relatively thin stringers of marl, dark-gray, silty, glauconitic, fossiliferous (Foraminifera at certain horizons)__ 160

Cibicides tallakattensis at 1570-1580. Valvulineria jacksonensis var. at 1600-1610.

Depth (feet)
1,690

Lower Eocene and Paleocene (Undifferentiated):

Marl: gray, silty, carbonaceous, micaceous, glauconitic, fos-

siliferous (Foraminifera) _-----------------------------------------

70

Eponides dorji, Globorotalia wilcoxensis at 1715-1538.

No samples _______________________________

30

Limestone: gray, much calcitized, dense, crystalline, massive, glauconitic --------------------------------- ----------------------------------------------------- _ 90
Sand: fine to medium-grained, angular; interbedded marl, dark-gray, somewhat fissile, carbonaceous, micaceous (finely disseminated); and limestone, as above_____________ __________ 215

1,760 1,790 1,880 2,095

Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):

Sand: fine to medium-grained, angular; interbedded marl,

gray, silty, glauconitic, micaceous, pyritiferous, fossilifer-

ous (macroshells, Ostracods, and Foraminifera at certain

levels) --------------------------------------------------- _______________

___ _______________ 215

Anomalina pseudopapillosa at 2155-2170. Globotruncana sp., Gaudryina sp. at 2275-2290. Dorothia sp., Guembelina striata at 2300-2310.

Marl: gray to brown, more fissile (shaley) with depth, silty,

micaceous, carbonaceous, pyritiferous, fossiliferous (mega-

fossils, Ostracods, and Foraminifera at certain levels)

440

Cibicides harperi at 2480-2490. Planulina taylorensis at 2580-2590.

Sand: fine to medium-grained, angular, phosphatic; inter-

bedded marl, as above ----------------------------------------------------------

150

Marl: brown, fissile, silty, carbonaceous, micaceous, pyriti-

ferous, fossiliferous (Foraminifera)-----------------------------------

50

2,310
2,750 2,900 2,950

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

9

Thickness (feet)
Inoceramus prisms common, Kyphopyxa christneri at 29002910.

Sand: fine to coarse-grained, angular, somewhat indurated

at certain levels, micaceous, phosphatic, fossiliferous,

(macroshells, a coquina at certain horizons)~~~~~~~~~~~~-~-~~~~~~~~

100

Depth (feet)
3,050

Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, glauconitic, fossiliferous (macroshells) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 70

Sand: dark-gray to black, fissile, carbonaceous (finely dis-

seminated) ; interbedded sand, as above ~~~~~~~~~~~~~~~

200

Sand: fine-grained, indurated, micaceous, glauconitic

100

Sand: coarse-grained, massive, angular, arkosic; clay, dark-

brown to brick-red, waxy, micaceous, sandy

~~~~~~~~~~~~~~~

540

Siderite nodules abundant at 3480-3490.

3,120 3,320 3,420 3,960

Lower Cretaceous (?) (Undifferentiated):
Clay: pale-green to brick-red, waxy, highly micaceous, sandy; interbedded sand, coarse-grained, angular, arkosic ~~~~~~~~~~~~~~~~~~ 115

4,075

Basement Complex (Undifferentiated): Crystalline rock, undifferentiated

23 4,098

Summary:

Miocene (undifferentiated) ~~~ ~~~~~

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 520

0 ligocene (undifferentiated) ~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 120

Upper Eocene (Ocala limestone) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 280

In middle Eocene (Lisbon formation) ~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~-~~~~~~~~~~~~~~~~~~ 610

In middle Eocene (Tallahatta formation) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 160

Lower Eocene and Paleocene (undifferentiated) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 405

Upper Cretaceous (post-Tuscaloosa undifferentiated) ~~~~~~~~~~~~~~~~~~~~ 955

Upper Cretaceous (Tuscaloosa formation) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 910

Lower Cretaceous (?) (undifferentiated) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 115

Basement complex (undifferentiated) ~~~~~~~~~~~~~~~-~~~~~~~~~~~~~~~~~~~~~~~~

23

520 640 920 1,530 1,690 2,095 3,050 3,960 4,075 4,098

Potential Water-Bearing Zones:

Limestone ~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~-~~~~~~~~~~~~~~~~~~~~~~~~~~

320

Sand: fine to coarse-grained ~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 50

860 1,430

10

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: About 2 mi. east of Graham, Land Lot 108, 3rd Land District
Owner: No. 1 Baptist Home Driller: W. B. Graham Drilled: 1947

APPLING COUNTY
Well No.: GGS 161 Elev.: 199

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated): Sand: fine to coarse-grained, arkosic at depth __

90

90

Miocene (Undifferentiated):

Clay: light-gray to pale-green, very sandy, phosphatic at

depth; interbedded sandy limestone and beds of sand ______________ 460

550

Gray to brown phosphatic pebbles at 230-240.

Sand, indurated, phosphatic, at 390-420.

Dolomitic limestone, light-brown, sandy, phosphatic, at 420-450.

Sand, fine to coarse-grained, phosphatic at 450-550.

Oligocene (Undifferentiated):

Limestone: cream to light-gray, soft and dense (calcitized),

nodular, fossiliferous (Foraminifera)

_____________ _

80

630

Rotalia byramensis at 550-560. Dictyoconus1 sp. at 570-580.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, dense (much calcitized), fossiliferous

(bryozoan remains and Foraminifera)

10

640

Operculinoides flo1-idensis at 630-640.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) _______________________________________ Oligocene (undifferentiated) __________________________ Upper Eocene (Ocala limestone) __________________ _

90

90

460

550

80

630

10

640

Potential Water-Bearing Zones: Sand: fine to coarse-grained _ _________________________________ Sand: fine to coarse-grained, phosphatic Limestone _
'Reworked(?) fossil of middle Eocene age.

10

60

100

550

90

640

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

11

ATKINSON COUNTY

Location: 1,650 ft. north and 660 ft. east of southwest corner of Land Lot 71, 7th Land District
Owner: No. 1 Doster Ladson Driller: Sun Oil Company Drilled: January 1945

Well No.: GGS 107 Elev.: 222 (derrick floor)

Thickness Depth

(feet)

(feet)

No samples

90

90

In Miocene (Undifferentiated):

Sand: fine to coarse-grained, subangular, phosphatic

10

100

Sand: as above; and clay, pale-green, somewhat indurated

and tough, sandy ____

________________ _

70

170

Limestone: cream to light-brown, dense, somewhat saccha-

roidal, much calcitized, sandy, fossiliferous (molluscan

shells); interbedded with sand and clay, as above _

90

260

Oligocene (Undifferentiated):

Limestone: cream, nodular, rather massive, cherty, sandy,

fossiliferous (some Foraminifera) __________________

130

390

Quinqueloculina sp., Rotalia mexicana var., Asterigerina subacuta at 260-270.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, calcitized, fossiliferous (molluscan shells,

echinoids, bryozoan remains and Foraminifera)

______________ 190

580

Camerina sp. at 400-410. Camerina sp., Lepidocyclina sp. at 440-450. Gypsina globula common at 460-470.

Middle Eocene: Claiborne Group: Lisbon Formation:

Dolomitic limestone: brown, rather massive, saccharoidal,

sandy; some limestone, as above _______________ ----------------------

20

600

Sand: medium to coarse-grained, subangular; dolomitic lime-

stone, as above

30

630

12

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Limestone: cream, calcitized, somewhat nodular and loosely consolidated, granular, chalky, cherty at certain levels, fossiliferous (Foraminifera); interbedded limestone, similar to above but partially dolomitized, light-brown, saccharoidaL 690
Lepidocyclina sp. at 700-710. Discorinopsis gunteri at 810-820. Asterocyclina monticellensis at 930-940. Asterocyclina monticellensis, Lepidocyclina antillea at 10301040. Discorbis inornatus at 1060-1070.

Depth (feet)
1,29C

Tallahatta Formation:
Dolomitic limestone: brown, saccharoidal, somewhat cherty, gypsiferous, glauconitic at depth; interbedded with limestone, cream, calcitized, granular, sparsely glauconitic, fossiliferous (Foraminifera) -------------------------------------------------------------- 190
Operculinoides sp., Asterocyclina sp. at 1330-1340. Lepidocyclina antillea common at 1350-1360.
Lower Eocene: Wilcox Group (Undifferentiated):
Limestone: white to cream, much calcitized, dense, massive, coarsely glauconitic, sandier at depth, fossiliferous at certain levels (molluscan shells and Foraminifera) _________________ 170

1,480 1,650

Paleocene: Midway Group: Clayton Formation:

Indurated sand1 : fine-grained, micaceous, finely phosphatic,

fossiliferous (fragments and molds of molluscan shells)

50

Limestone: gray to cream, much calcitized, dense, coarsely

glauconitic, sandy, fossiliferous (fragments and molds of

molluscan shells and some Foraminifera)

130

Robulus midwayensis? at 1720-1730. Robulus midwayensis at 1740-1750.

1,700 1,830

Upper Cretaceous: Providence and Ripley (Undifferentiated):

Clay (or marl?): dark-brownish to bluish-gray, silty, mica-

ceous, sparsely glauconitic, pyritiferous, fossiliferous at

certain levels (Foraminifera) ; interbedded with thin ton-

gues of sand, fine-grained, micaceous, pyritiferous

580

2,410

1This sand contains Operculinoides catenula and Pseudophragmina stephensoni in wells situated farther west, hence is tentatively placed in the Paleocene.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

13

Thickness (feet)
Anomalina pseudopapillosa? at 1870-1880. Robulus navarroensis at 1890-1900. Robulus navarroensis, Globotruncana sp., Anomalina pseudopapillosa at 1940-1950. Cibicides harperi at 2030-2040. Clavulinoides trilatera, Globotruncana sp. at 2070-2080. Palmula reticulata at 2310-2320. Spiroplectammina semicomplanata at 2390-2400.

Depth (feet)

Cusseta and Blufftown Formations (Undifferentiated): Marl: as above but more abundantly fossiliferous ________________________ 380 Bolivinoides decorata at 2410-2420. Planulina texana at 2610-2620.

2,790

Blufftown Formation: Marl: as above but coarsely glauconitic _________
Glauconite prominent at 2790-2800. Vaginulina texana at 3050. Inoceramus prisms common to abundant at 2950-2960.

465 3,255

Eutaw Formation (Restricted) :
Indurated sand: fine to medium-grained, subangular, micaceous, phosphatic, glauconitic, fossiliferous at certain levels (fish teeth and molluscan shells) ; interbedded with thin stringers of clay, dark-brownish-green, laminated, silty, micaceous -------------------------------------------------------------------------------------------- 132

3,387

Tuscaloosa Formation:
Sand: fine to coarse-grained, subangular, abundantly micaceous, glauconitic at certain horizons, pyritiferous, arkosic; interbedded with relatively thin stringers of clay, darkbrown to brownish-green, somewhat laminated, silty, finely micaceous; a few thin beds of lignite __________________ _______________________ 291

Shale (or thinly laminated clay): dark-brown, laminated,

silty, micaceous, lignitic, fossiliferous at certain levels (im-

pressions and fragments of molluscan shells); interbedded

with scattered tongues of indurated sand, fine to medium-

grained, subangular, micaceous, glauconitic, fossiliferous

at various levels (oyster shells) ____________________ _________________

132

3,678 3,810

14

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Sand: coarse-grained, subangular, abundantly micaceous, arkosic, pyritiferous; interbedded with beds of clay, darkbrownish-green with red to purple streaks (mottled), silty, micaceous, sideritic at certain horizons __________________ ___________________ 130

Depth (feet)
3,940

Lower Cretaceous? (Undifferentiated):
Sand: coarse-grained, subangular to subrounded, varicolored, coarsely micaceous, arkosic; interbedded with many relatively thin stringers of clay, brick-red, silty, micaceous __________ 280

4,22(

Basement Complex: Volcanic tuff 1 _________________________

76 4,296

Summary:

No samples --------------------------------- _______________________

90

90

Miocene (undifferentiated) __________________

170

260

Oligocene (undifferentiated) _

130

390

Upper Eocene (Ocala limestone) __

190

580

Middle Eocene (Lisbon formation)

710 1,290

Middle Eocene (Tallahatta formation) ____

190 1,480

Lower Eocene (Wilcox Group, undifferentiated) ____

170 1,650

Paleocene (Clayton limestone) __________ _ -----------------------------------------

180 1,830

Upper Cretaceous (Providence and Ripley, undifferentiated)

580 2,410

Upper Cretaceous (Cusseta and Blufftown, undifferentiated) __ 380 2,790

Upper Cretaceous (Blufftown formation) _________________________________

465 3,255

Upper Cretaceous (Eutaw, restricted) __________________________________

132 3,387

Upper Cretaceous (Tuscaloosa formation) __________________________

553 3,940

Lower Cretaceous ( ?) (undifferentiated) _

_____________ 280 4,220

Basement complex -----------

----------------- ----------------------

76 4,296

Location: City of Pearson Owner: No. 2 City of Pearson Driller: Merrel Gray Drilling Company Drilled: 1955

ATKINSON COUNTY
Well No: GGS 425 Elev.: 2052

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Clay: red, sandy, limonitic___________________________________________________________________ 10

10

Sand: fine to coarse-grained, limonitic, with inclusions of

kaolin (clay; white, somewhat sandy), and some clay as

above ____ --------------------------------------------------------------------------------------------- 30

40

Clay: tan to dark-brown, sandy -------------------------------------------------------- 10

50

'Reported by Paul L. A.pplin, 1951, U.S. Geo!. Survey Circ. 91, p. 21. 2Average elevation taken from State Highway map.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

Hi

Mioc~ne (Undifferentiated):

Thickness (feet)

Clay: pale-green, sandy, phosphatic at depth; interbedded

sand ----------------------------------------------------------------------------------------------

90

Gray phosphatic pebbles, at 60-70. Fine-grained sand, at 70-90. Fine-grained sand, at 110-140.

Clay: pale-green, sandy, phosphatic; interbedded with thin beds of limestone, white, sandy; some sand as above ________________ 50

Limestone: white, sandy, phosphatic, dolomitized at depth, fossiliferous (macroshells) ____ ------------------------------------------------------- 90

Dolomitic limestone, light-brown, saccharoidal, phosphatic, at 220-280.

Clay: pale-green, sandy, with some dolomitic limestone and

sand as above --------------------

------------------------------------------- 10

Depth (feet)
140
190 280
290

Oligocene (Undifferentiated):

Clay: with fragments of limestone, nodular, recrystallized,

calcitized, more fossiliferous with depth ___________________________

110

400

Quinqueloculina sp. at 290-300. Quinqueloculina cf. Q. leonensis, Dictyoconus1 sp. at 300310.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: dense, much calcitized, fossiliferous (macroshells,

bryozoan remains, and Foraminifera) _______

_________________ 20

420

Operculinoides cf. 0. ocalanus at 400-410. Asterocyclina nassauensis at 410-420.
Limestone: softer, less calcitized than above _
Gypsina globula at 420-430. Operculinoides sp. abundant at 440-450. Pseudophragmina flintensis at 450-460.

40

460

Summary:

Pliocene to Recent (undifferentiated) _____ ______ ________________

50

50

Miocene (undifferentiated) ----------------------------------------------- ___________________ 240

290

Oligocene (undifferentiated) ----------------------------- ______________ ---------------- 110

400

Upper Eocene (Ocala limestone)

___________________ -----------------

60

460

Potential Water-Bearing Zones:
-Limestone ______________________ ---------------------- ------------------- --- ----------- ----
'Reworked ( ? ) fossil of middle Eocene age.

160

460

16

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: City of Alma Owner: No. 1 City of Alma Driller: Gray Well & Pump Company Drilled: May 1938

BACON COUNTY
Well No.: GGS 58 Elev.: 200

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Clay: red, some gray (mottled), very sandy, limonitic ________

50

50

No samples ___________________________________

14

64

In Miocene (Undifferentiated):

Clay: pale-green, sandy, phosphatic at depth; interbedded

sand and sandy limestone ________ ___________ _________ -------------- _

296

360

Brown chert abundant at 200-210. Brown phosphatic pebbles at 210-220. Fossiliferous limestone of macroshells at 260-270.

Limestone: white, sandy, fossiliferous and dolomitic at depth__ 90

450

Dolomitic limestone, brown, saccharoidal, at 400-450.

Oligocene (Undifferentiated): Limestone: cream, fossiliferous Rotalia byramensis, Dictyoconus1 sp. at 450-460.

50

500

Upper Eocene: Jackson Group: Ocala Limestone: Limestone: white, fossiliferous _______________________________
Operculinoides floridensis at 500-510. Bryozoan remains abundant at 520-530. Gypsina globula at 540-550.

126

626

Summary:

Pliocene to Recent (undifferentiated) -------------------------------------------------- 50

50

No sampies ---------------------------------------------------------------------------------------------- 14

64

In Miocene (undifferentiated) ----------------------------------------------------------- 386

450

0 ligocene (undifferentiated) --------------------------------------------------------------- 50

500

Upper Eocene (Ocala limestone) ---------------------------------------------------------- 126

626

Potential Water-Bearing Zones:

Limestone ---- --------------------------------------------------------------------------------------------- 126

626

'Reworked(?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

17

Owner: No. 1 West Baker Elementary School Drilled: 1956

BAKER COUNTY Well No.: GGS 479

Thickness Depth

(feet)

(feet)

Residuum:

Sand: fine to coarse-grained, angular; fragments of residual

limestone -----------------------------------------------------------------------------------------

10

10

Clay: gray, tan and red, sandy, limonitic, carbonaceous;

fragments of residual limestone ___________________________________

70

80

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: dense, much calcitized, sandy, coarsely glauco-

nitic, and fossiliferous at depth; some clay as above ______

114

194

Limestone with macrofossils at 95-194.

Summary:

Residuum _______________ --------------------------------------------- ____________________________

80

80

Upper Eocene (Ocala limestone) ________ ------------------------------ ______________ 114

194

Limestone

Potential Water-Bearing Zones:

114

194

Location: City of Fitzgerald Owner: City of Fitzgerald Well No. 3 Driller: Layne-Atlantic Company Drilled: April 1948

BEN HILL COUNTY
Well No.: GGS 154 Elev.: 357

Thickness Depth

(feet)

(feet)

Miocene: Hawthorn Formation:

Sand: fine to coarse-grained; some clay, light-gray to red

(mottled) , sandy ---------------------------------------------------------------------------- 74

7 4

Clay: pale-green, sandy; some sand as above -------------------------------- 136

210

Tampa Limestone:

Limestone: white, sandy, fossiliferous (macroshells and rare

Foraminifera) ; some clay, light-gray, calcareous -------------------- 46

256

Sorites sp. at 240-256.

18

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: white to light-gray, extremely dense and crystalline, cherty, sandy, fossiliferous (some echinoid and bryozoan remains and Foraminifera) -------------------------------------------------- 94

Rotalia mexicana var. at 256-263. Gypsina globula1 at 263-275.

Dept! (feet)
350

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, relatively soft, somewhat calcitized and

granular, fossiliferous (echinoid and bryozoan remains and

Foraminifera) ------------------------- ------------------------------ ________________

280

630

Operculinoides floridensis at 350-360. Camerina striatoreticulata at 600-615.

Limestone: as above, interbedded with dolomitic (?) lime-

stone, light-brown, saccharoidal ___________________ ______________ ______________ 95

725

Amphistegina pinarensis var. at 630-645.

Middle Eocene(?): Claiborne Group (Undifferentiated):

Limestone: cream, nodular, much calcitized, very sandy, fos-

siliferous (some bryozoan remains and Foraminifera)

14

739

Lepidocyclina sp. at 725-739.

Summary:

Miocene (Hawthorn formation)

______________ _______________ ________________ 210

210

Miocene (Tampa limestone)

___________________ 46

256

Oligocene (undifferentiated) ___________

------------------------------------------- 94

350

Upper Eocene (Ocala limestone) ____ --------------------------------------------------- 375

725

Middle Eocene ( ?) (Claiborne group, undifferentiated)

14

739

Limestone

Potential Water-Bearing Zones:

280

630

'Reworked(?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

19

Location: Land Lot 120, 3rd Land District Owner: No. 1 W. A. Pope Driller: W. B. Graham Drilled: 1947

BEN HILL COUNTY
Well No.: GGS 160 Elev.: 3701

Thickness Depth

(feet)

(feet)

Miocene: Hawthorn Formation:

Clay: light-gray to pale-green, sandy; and sand, fine to

coarse-grained _______________________ -------------------------------------------------------- 190

190

Tampa Limestone:

Limestone: white, sandy, interbedded with thin stringers of

sand and an occasional clay bed ____________________________

70

260

Clay, light-gray, calcareous, at 230-340.

Oligocene (Undifferentiated):

Limestone: cream to white, rather dense, nodular, fossilifer-

ous (some Foraminifera) ---------------------------------------------------------------- 100

360

Rotalia byramensis at 260-270. Dictyoconus2 sp. at 340-350.

Upper Eocene: Jackson Group: Ocala Limestone: Limestone, as above ___ Operculinoides floridensis, Lepidocyclina sp. at 360-370.

20

380

Summary:

Miocene (Hawthorn formation) __ _____________________ _________ ___________________ 190

190

Miocene (Tampa limestone) _________________ __ ______________

70

260

Oligocene (undifferentiated) ---------------------- _-------------------------------------- 100

360

Upper Eocene (Ocala limestone) ____________________ ------------------------------------- 20

380

Limestone ____

Potential Water-Bearing Zones:

90

380

-'Elevation taken from State Highway map.
Reworked ( 1) fossil of middle Eocene age.

20

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: West side of Gordon Street in Fitzgerald Owner: City of Fitzgerald Well No. 4 Driller: Layne-Atlantic Company Drilled: August 1953

BEN HILL COUNT"\
Well No.: GGS 355 Elev.: 357

Thickness Depth

(feet)

(feet)

Miocene: Hawthorn Formation:

Clay: mottled to pale yellowish-green at depth, sandy; inter-

bedded sand, fine to coarse-grained, subangular, phosphatic____ 179

179

Tampa Limestone:

Limestone: white, sandy, fossiliferous (macroshells at depth)____ 64

243

Oligocene (Undifferentiated):

Limestone: cream, massive, dense, saccharoidal, somewhat

nodular, cherty, fossiliferous (bryozoan remains, Ostracods,

and Foraminifera) -------------------------------------------------------------------------- 52

295

Rotalia mexicana var., Nonion advena, Cibicides sp. at 243254. Rotalia mexicana var., Asterigerina subacuta at 261-269.

Summary:

Miocene (Hawthorn formation) --------------------------- -------------------------------- 179

179

Miocene (Tampa limestone) ------------------------------------------------------------------ 64

243

Oligocene (undifferentiated) --------------------------------------------------------------- 52

295

Limestone

Potential Water-Bearing Zones:

52

295

Remarks: 1. Better water-bearing limestones lie below depth of 295. 2. This well reportedly was drilled to a total depth of 612.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

21

BERRIEN COUNTY

Location: About halfway between Alapaha and ville, Land Lot 41, lOth Land District
Owner: No. 1 L. R. King Driller: W. B. Graham Drilled: 1947

Nash-

Well No.: GGS 159 Elev.: 2651

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained; and some clay, light-gray,

sandy --------------------------------------------- ---------------------------------------------------- 80

80

Miocene: Hawthorn Formation:

Clay: pale-green, sandy, phosphatic at depth _______________________________ 90

170

Gray phosphatic pebbles at 100.

Tampa Limestone:

Limestone: white, sandy, dolomitized at depth ___________ _ ______________ 147

317

Dolomitic limestone at 220-300.

Elphidium sp. at 300-317.

Summary:

Pliocene to Recent (undifferentiated) ______ ___________________________

80

80

Miocene (Hawthorn formation) ____________ --------------------------------------------- 90

170

Miocene (Tampa limestone) ____________

------------------------------------------ 147

317

Potential Water-Bearing Zones: Limestone _____________________________________________________________________________________ _

27

317

Location: Near Nashville Owner: No. 1 P. D. Fulwood Company Driller: Layne-Atlantic Company Drilled: March 1955

BERRIEN COUNTY
Well No.: GGS 421 Elev.: 2401

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, subangular to subrounded, limo-

nitic; clay, yellow to tan, sandy __

------------------------------------ 3

3

Clay: pale-bluish-gray with purple streaks (mottled), sandy,

- limonitic --------------------------------------------------------------------------------
'Average elevation taken from State Highway map.

11

14

22

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Sand: fine to medium-grained, subangular to subrounded,

arkosic, sparsely phosphatic ---------------------------------

50

Depth (feet)
64

Miocene (Undifferentiated):

Clay: pale-brownish to yellowish-green, blocky, sandy

20

84

Limestone: white, rather dense, saccharoidal, sandy, cherty ______ 98

182

Oligocene (Undifferentiated):

Limestone: white, nodular, much calcitized, somewhat sac-

charoidal, fossiliferous (Foraminifera) _____

___ __ ______________ 35

217

Quinqueloculina sp., Rotalia mexicana var. at 182-187.

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, rather soft, somewhat chalky, fossilifer-

ous (bryozoan remains and Foraminifera) ____________________

93

310

Gypsina globula at 207-228. Operculinoides sp. common at 248-269.

Limestone: flat-white, much calcitized, somewhat crystalline,

fossiliferous (bryozoan remains and Foraminifera) _____________ 20

330

Operculinoides sp., Lepidocyclina sp., Asterocyclina sp. at 325-330.

Summary:

Pliocene to Recent (undifferentiated) __________________________

64

64

Miocene (undifferentiated) _______ __________________________

118

182

Oligocene (undifferentiated) ________________________________________ --------------- 35

217

In upper Eocene (Ocala limestone)

113

330

Potential Water-Bearing Zones: Limestone: _________________ _

113

330

Remarks:
Quality of samples not good. Hence top of upper Eocene (Ocala limestone) not definitely determined.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

23

Location: 8 mi. south of Macon, at Avondale Owner: Cochran Flying Field (U.S. Govt.) Well No.2 Driller: Layne-Atlantic Company Drilled: May 1941

BIBB COUNTY
Well No.: GGS 7 Elev.: 358

Thickness Depth

(feet)

(feet)

Upper Eocene: Jackson Group: Barnwell Formation:

Sand: fine to coarse-grained, angular; and some clay, dark-

red, very sandy ---------------------------------------------------------------------

65

65

Clay, dark-red, very sandy at 0-15. Sand, fine to coarse-grained, angular, at 15-65.

Upper Cretaceous: Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, arkosic _

80

145

Sand as above; interbedded with thin beds of kaolin, white

to pink to red, micaceous, sandy ---------------------------------- _________________ 155

300

Sand, fine to coarse-grained at 200-220.

Kaolin: white to gray to red, sandy, micaceous ____________________________ 142

442

Sand, fine to coarse-grained, at 342-353. Sand, fine to coarse-grained, at 371-375. Sand, coarse-grained, at 434-442.

Sand : coarse-grained ___ --------------------------------------------------- ___________________ 54

496

Basement Complex (Undifferentiated): Crystalline rocks _____________________________________

13

509

Summary:

Upper Eocene (Barnwell formation) _ _____ __________________ _____________

65

65

Upper Cretaceous (Tuscaloosa formation) _____________ ______________ 431

496

Basement complex (undifferentiated) _ __________________

_______________ 13

509

Potential Water-Bearing Zones:

Sand: fine to coarse-grained ______ _________________ __ ------------------------------ 45

145

Sand: fine to coarse-grained __________ ______

___ ------------------------------------ 20

220

Sand: fine to coarse-grained _______________

---------------------------------------- 11

353

Sand: fine to coarse-grained _______________________ --------------------------------------- 4

375

Sand: fine to coarse-grained ------------------------------------- ____________________________ 6

434

Sand: fine to coarse-grained ___________________________

_______________

48

490

24

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 8 mi. south of Macon, at Avondale Owner: No. 1 Cochran Flying Field (U. S. Govt.) Driller: Layne-Atlantic Company Drilled : 1941

BIBB COUNTY
Well No.: GGS 8 Elev.: 380

Thickness Depth

(feet)

(feet)

Upper Eocene: Jackson Group: Barnwell Formation:

Sand: dark-red, fine to coarse-grained, argillaceous ___________________ 30

30

Upper Cretaceous: Tuscaloosa Formation:

Kaolin: gray, micaceous_______________________________________________________________________ 7

37

Sand: fine to coarse-grained, interbedded with thin beds of

clay --------------------------------------------------------------------------------------------------- 233

270

Sand, fine to coarse-grained at 37-74.

Sand, fine to coarse-grained at 173-270.

Kaolin: sandy, micaceous -------------------------------------------------------------------- 55

325

Sand: fine to coarse-grained, angular ---------------------------------------------- 50

375

Summary:

Upper Eocene (Barnwell formation) -------------------------------------------------- 30

30

Upper Cretaceous (Tuscaloosa formation) ---------------------------------------- 345

375

Potential Water-Bearing Zones:

Sand: fine to coarse-grained _

37

74

Sand: fine to coarse-grained __________________ ----------------------------------------

97

270

Sand: fine to coarse-grained ___

50

375

Location: Few miles southwest of Macon Owner: No. 2 Macon Kraft Company Driller: Layne-Atlantic Company Drilled: August 1951

BIBB COUNTY
Well No.: GGS 230 Elev.: 3251

Thickness Depth

(feet)

(feet)

Upper Eocene: Jackson Group: Barnwell Formation:

Sand: fine to coarse-grained, and some clay ------------------------------ 30

30

Sand, fine to medium-grained, red, argillaceous, limonitic at 0-15.

Sand, fine to coarse-grained at 13-30.

'Average elevation taken from State Highway map.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

25

Upper Cretaceous: Tuscaloosa Formation:

Thickness (feet)

Sand: fine to coarse-grained, angular, interbedded with beds of kaolin at various levels -------------------------------------------------------------- 240

Kaolin, white, sandy, micaceous at 30-45. Sand, coarse-grained at 105-165. Kaolin, pink, sandy at 165-195. Sand, coarse-grained at 195-225. Kaolin, mottled, sandy at 225-255. Sand, fine to coarse-grained at 255-270.

Depth (feet)
270

Summary:

Upper Eocene (Barnwell formation) _____________________ ---------------------------- 30

30

Upper Cretaceous (Tuscaloosa formation)

240

270

Potential Water-Bearing Zones:

Sand: fine to coarse-grained ------------------------------------------------------------------ 15

60

Sand: fine to coarse-grained ------------------------------------------------------------------ 60

165

Sand: fine to coarse-grained _---------------------------------------------------------------- 30

225

Sand: fine to coarse-grained _---------------------------------------------------------------- 15

270

Location: Southwest Macon, about 1.5 mi. east of Highway 11
Owner: No. 1, Strietmann Biscuit Company Driller: Layne-Atlantic Company Drilled: September 1953

BIBB COUNTY
Well No.: GGS 357 Elev.: 364

Thickness Depth

(feet)

(feet)

Upper Eocene: Jackson Group: Barnwell Formation:

Clay: tan to red to purple (mottled), sandy; some sand, fine

to coarse grained, arkosic, limonitic -------------------------------

41

41

Sand, fine to coarse-grained, arkosic, limonitic at 29-41.

Upper Cretaceous: Tuscaloosa Formation:

Clay: gray to pink to purple (mottled), sandy, micaceous,

interbedded with sand, fine to coarse-grained, angular,

arkosic -------------------------------------------- ----------------------------- ____________________ 203

244

Sand: fine to coarse-grained, angular, arkosic

57

301

Basement Complex (Undifferentiated):

Crystalline rock -------------------------------------------------------------------- --------------- 2

303

26

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Thickness (feet)

Upper Eocene (Barnwell formation) ----------"----------

41

Upper Cretaceous (Tuscaloosa formation) __________________

260

Basement complex (undifferentiated) ________________________________________________ 2

Deptl(feet)
41 301 303

Potential Water-Bearing Zones:

Sand: fine to coarse-grained ___________________________

______ __________ 5

92

Sand: fine to coarse-grained ___ -------------------------------------------------------------- 18

139

Sand: fine to coarse-grained _____ ------------------------------------------------------------ 20

166

Sand: fine to coarse-grained _______________ ---------------------------- --------------------- 23

194

Sand: fine to coarse-grained ___

________________________ -------------

5

217

Location: City of Macon Owner: No. 1, Dixie Dairies Driller: Layne-Atlantic Company Drilled: October 1953

BIBB COUNTY
Well No.: GGS 361 Elev.: 305

Thickness Depth

(feet)

(feet)

Upper Cretaceous: Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, arkosic; some kaolin,

white to pink, micaceous, sandy _-------------------------------------------------- 26

26

Sand: fine to coarse-grained, angular, with kaolin inclusions____ 100

126

Clay: gray to pink to brick-red, micaceous, sandy __

46

172

Sand: coarse-grained, arkosic -------------------------------------- _____________________ 40

212

Sand: as above; with fragments of clay, pale-green, highly

micaceous (probably weathered crystalline rock?) __________________ 37

249

Basement Complex (Undifferentiated): Crystalline rock, much weathered ____________

4

253

Summary:
Upper Cretaceous (Tuscaloosa formation) Basement complex (undifferentiated) -------------------------------------

249

249

4

253

Potential Water-Bearing Zones:

Sand: fine to coarse-grained ---------------------------------------------- ___________________ 100

126

Sand: fine to coarse-grained _______ ------------------------------------------- ______________ 40

212

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

27

Location: 0.6 mi. north of Railway Depot in Cochran, approximately 0.25 mi. east of Highway 129 in
Cochran owner: No. 1, Hill Lumber Company Driller: Layne-Atlantic Company Drilled: February 1946

BLECKLEY COUNTY
Well No.: GGS 106 Elev.: 364

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated): Clay: pale-green to mottled, sandy, limonitic _______
Oligocene (Undifferentiated): Limestone: gray, extremely dense (silicified), very cherty
Summary: Miocene (undifferentiated) ________________ Oligocene (undifferentiated)
Potential Water-Bearing Zones: None observed to total depth of well; well unsuccessful.

79

79

17

96

79

79

17

96

Location: Northeastern part of city, 0.5 mi. east of Highway 129 in City of Cochran
Owner: City of Cochran Well No.2 Driller: Layne-Atlantic Company Drilled: December 1949

BLECKLEY COUNTY
Well No.: GGS 195 Elev.: 354

Thickness Depth

(feet)

(feet)

Miocene and Oligocene Residuum:

Clay: mottled to pale-green, sandy; some sand, fine to coarse-

grained; fragments of residual limestone, much leached,

cherty, fossiliferous (bryozoan remains and Foraminifera)____ 95

95

Rotalia byramensis at 0-95.

In Oligocene (Undifferentiated):

Limestone: white, dense (much calcitized), cherty, fossili-

ferous (some bryozoan remains and impressions of mega-

fossils)

----------------------------------------------------------------------------------- 4

99

28

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Eocene: Jackson Group: Cooper Marl:

Thickness (feet)

Sand: fine to medium-grained, limey, fossiliferous (Foraminifera) --------------------------------------------------------------------- __ __________ ___ 26
Bulimina jacksonensis, Uvigerina sp. at 99-125.

Depth (feet)
125

Barnwell Formation (Twiggs Clay Member):

Marl: light-gray, somewhat sandy to "tight," glauconitic, fos-

siliferous (Foraminifera) _______ _________________________ ____________________________ 29

154

Bulimina jacksonensis common at 125-135.

Limestone: gray, dense (much calcitized), sandy, finely glau-

conitic -------------------------------------------------------------------------------------------------- 5

159

Marl: light-gray, glauconitic; some limestone, cream, soft,

fossiliferous (abundant bryozoan remains)

__________________ 30

189

Ocala Limestone (Tivola Tongue):

Limestone: cream, soft, fossiliferous (consists almost entirely

of bryozoan remains) ---------------------------------------------------------------------- 9

198

Barnwell Formation (Twiggs Clay Member):

Marl: light-gray, glauconitic; some limestone, cream, soft, fos-

siliferous (abundant bryozoan remains) _______________

13

211

Ocala Limestone (Tivola Tongue):

Limestone: cream, soft, fossiliferous (consists almost entirely

of bryozoan remains) ------------------------------- -------------------------------------- 39

250

Lepidocyclina cf. L. ocalana at 211-217.

Middle Eocene: Claiborne Group: Gosport Sand: Sand: fine to medium-grained, angular _______________________________

10

260

Lisbon Formation:

Clay: light-gray, sandy, finely glauconitic, fossiliferous (some

Foraminifera) ------------------------------------------------------------------------------------ 60

320

Cibicides westi at 260-320.

Lower Eocene(?) and Paleocene(?) (Undifferentiated):

Sand: coarse-grained; some clay, gray to pink, sandy,

lignitic ------------------------------------------------------------------------------------------------ 74

394

Sand: fine to medium-grained ________ --------------------------------------------------- 16

410

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

29

Upper Cretaceous: Tuscaloosa Formation:

Thickness (feet)

Clay: white to gray to brick-red, sandy, lignitic, micaceous; some sand, fine to medium-grained ---------------------------------------------- 140

Sand: fine to coarse-grained; some thin stringers of clay,

gray to pink, sandy, micaceous _____ ----------------------------------

61

Depth (feet)
550 611

Summary:

Miocene and Oligocene residuum ---------------------------------------

95

95

In 0 ligocene (undifferentiated) ------------------------------------------------------------ 4

99

Upper Eocene (Cooper marI) ---------------------------------------------------------------- 26

125

Upper Eocene (Barnwell formation, Twiggs clay member) __________ 64

189

Upper Eocene (Ocala limestone, "Tivola tongue") -------------------------- 9

198

Upper Eocene (Barnwell formation, Twiggs clay member) ____________ 13

211

Upper Eocene (Ocala limestone, "Tivola tongue") -------------------------- 39

250

Middle Eocene (Gosport sand) ____ --------------------------------------------------------- 10

260

Middle Eocene (Lisbon formation) ----------------------------------------------

60

320

Lower Eocene ( ?) and Paleocene ( ?) (undifferentiated) ________________ 90

410

Upper Cretaceous (Tuscaloosa formation) __________________________

201

611

Potential Water-Bearing Zones:

Sand: fine to medium-grained ----------------------------------------- ______________ 10

260

Sand: fine to coarse-grained ------------------------------------- ---------------------------- 74

394

Sand: fine to coarse-grained ------------------------------------------------------------------ 19

534

Sand: fine to coarse-grained ------------------------------------------------------------------ 61

611

Location: At Cary Owner: No. 1 Smith Driller: H., B. Truluck Drilled: 1950

BLECKLEY COUNTY
Well No.: GGS 277

Thickness Depth

(feet)

(feet)

No samples _------------------------------------------------------------------------------------------ 25

25

In Miocene and Oligocene Residuum:

Clay: light-gray to pale-green, cherty at depth; interbedded

sand, fine to coarse-grained, limonitic, arkosic -------------------------- 110

135

Summary:

No samples --------------------------------------------------------------------------------------------- 25

25

In Miocene and Oligocene residuum --------------------------------------------------- 110

135

30

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Potential Water-Bearing Zones:

Thickness (feet)

Sand : fine to coarse-grained ____ ------------------------------------------ ---------- ______ 10

Depth (feet)
135

Location: 0.25 mi. southeast of Atlantic Coast Line R.R. crossing in city of Nahunta
Owner: City of Nahunta Driller: Gray Well and Pump Corporation Drilled: August 1938

BRANTLEY COUNTY
Well No.: GGS 9 Elev.: 64

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated): Sand: fine-grained, finely disseminated phosphatic grains

30

30

Clay: dark-gray, silty, micaceous

4

34

Indurated sand: fine to coarse-grained, sparsely phosphatic _

6

40

Sand: fine to coarse-grained, rounded grains, arkosic

10

50

Limestone: light-gray to light-brown, dense (calcitized) nodu-

lar, sandy, fossiliferous (casts and impressions of mega-

fossils) ____ ---------------- ------------- -------------------------------------------

10

60

Sand: fine to coarse-grained, arkosic

8

68

Miocene (Undifferentiated):

Clay: dark-green, sandy, blocky; interbedded tongues of sand,

fine to coarse-grained, phosphatic __ ---------------- -------------------

358

426

Black phosphatic pebbles abundant at 150-160.

Dolomitic limestone: light-brown, saccharoidal, phosphatic;

interbedded beds of sand, fine to coarse-grained, phosphatic 121

547

Dolomitic limestone prominent at 426-434.

Oligocene (Undifferentiated):

Limestone: gray, dense (much calcitized), nodular, fossili-

ferous (bryozoan remains and Foraminifera) -------------------------- 101

648

Dictyoconus1 sp. at 600-625.

'Reworked ( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

31

Summary:
Pliocene to Recent (undifferentiated) _____________ Miocene (undifferentiated) ____________________________ Oligocene (undifferentiated) ------------------------------------- _______________

Thickness Depth

(feet)

(feet)

68

68

479

547

101

648

Potential Water-Bearing Zones :

Limestone and sand ---------------------------------------------------------------------------------- 113

547

Limestone -

----------------------------------- ----------------- --------------------------- 101

648

Remarks: Samples of poor quality below 68.

Location: 1.4 mi. north of Atlantic Coast Line R.R. at Waynesville, and 0.1 mi. east of county road from Waynesville to Browntown
Owner: No. 1 CCC Camp (U. S. Govt.) Driller: Gray Well & Pump Corporation Drilled: August 1940

BRANTLEY COUNTY
Well No.: GGS 90 Elev.: 60

Thickness Depth

(feet)

(feet)

No samples

62

62

In Pliocene to Recent (Undifferentiated):

Limestone: light-gray, dense (much calcitized), very sandy,

sparsely phosphatic, fossiliferous (casts and impressions of

megafossils)

________ _ ___________

13

75

Sand: fine-grained, finely disseminated phosphatic grains_________ 10

85

Clay: gray, sandy, sparse finely disseminated phosphatic grains 15

100

Indurated sand: fine to medium-grained, somewhat argillaceous 25

125

No samples

25

150

In Miocene (Undifferentiated):

Clay: dark-green, blocky, sandy, phosphatic, cherty, (at cer-

tain levels) ; interbedded tongues of sand, fine to coarse-

grained, phosphatic; stringers of dolomitic limestone; light-

brown, saccharoidal, sandy, phosphatic _____ -------------------------------- 214

364

Dolomitic limestone prominent at 260-280.

Sand prominent at 304-364.

32

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Thickness (feet)

No samples ---------------------------------------------------------------------------------------

62

In Pliocene to Recent (undifferentiated)------------------------------------

63

No samples --------------------------------------------------------------------------------------

25

In Miocene (undifferentiated) __________ ____________ _ ______________ _ _______ 214

Depth (feet)
62 125 150 364

Potential Water-Bearing Zones:
Sand: fine to coarse-grained ________________________________________________ . Sand: fine to coarse-grained _________________________ .

5

18L

60

364

Remarks:
This well was reportedly drilled to a total depth of 705, hence doubtless utilizes the underlying "principal limestone aquifer."

Location: 9 mi. west of Quitman Owner: No.1 M.G. Lawson Driller: Winter Hardware Company Drilled: March 1943

BROOKS COUNTY
Well No.: GGS 3 Elev.: 130

Thickness Depth

(feet)

(feet)

No samples -------------------------------------

10

10

In Miocene (Undifferentiated): Clay: mottled, very sandy________

50

60

Oligocene (Undifferentiated):

Limestone: white, dense (calcitized), nodular, fossiliferous__________ 140

200

Dictyoconus1 sp. at 160-180.

Summary:

No samples _________________ ------------------------------------------------------------------------- 10

10

In Miocene (undifferentiated) ______ -------------------------------------------------------- 50

60

0 ligocene (undifferentiated) ------------------------------------------------------------------ 140

200

Limestone

Potential Water-Bearing Zones:

140

200

'Reworked(?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

33

Location: 10 mi. southwest of Quitman owner: No. 1 H. R. Garrett Driller: W. C. Littleton Drilled: 1946

BROOKS COUNTY
Well No.: GGS 21 Elev.: 117

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, with inclusions of kaolin; also

clay, mottled to pale-green, sandy _________

--------------------------- 85

85

Miocene (Undifferentiated):

Clay: pale-green, sandy, phosphatic; interbedded at depth

with limestone, white, sandy_______ --------------------------------------------- 90

175

Gray, polished, phosphatic pebbles at 85-100.

Oligocene (Undifferentiated):

Limestone: gray, dense (calcitized), nodular, fossiliferous_

135

310

Quinqueloculina sp. at 175-185. Rotalia byramensis var. at 185-190. Dictyoconus1 sp. at 200-210.

Dolomitic limestone, brown, saccharoidal, at 308-310.

Summary:

Pliocene to Recent (undifferentiated)------------------------- _______________

85

85

Miocene (undifferentiated) __________________________________ --------------------------- __ 90

175

Oligocene (undifferentiated) ___ ___________ _ ____________ __________________

135

310

Potential Water-Bearing Zones: Limestone _______________ -------------------------------------------- ---------------------------

135

310

Location: Quitman Owner: No. 1 Southside Consolidated School Driller: Winter Hardware Company Drilled: January 1942

BROOKS COUNTY
Well No.: GGS 77 Elev.: 1802

Thickness Depth

(feet)

(feet)

No samples___________________________________________________________________________________________ 10

10

In Pliocene to Recent (Undifferentiated):
-Clay: pale-green to tan, sandy ---------------------------------------------
~Reworked(?) fossil of middle Eocene age. Average elevation taken from State Highway map.

30

40

34

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Miocene (Undifferentiated): Clay: pale-green, sandy, phosphatic_______________________________________ White, phosphatic pebbles at 40-120.

Thickness Depth

(feet)

(feet)

80

120

Oligocene (Undifferentiated): Limestone: gray, dense (calcitized), nodular, fossiliferous Quinqueloculina sp. at 120-140. Dictyoconus1 sp. at 140-160.

40

160

Summary:

No samples -----------------------------

--------------------------------------------------------- 10

10

In Pliocene to Recent (undifferentiated) ____ ---------------------------------------- 30

40

Miocene (undifferentiated) __ ____ _

___ _ ----------------------------------- 80

120

Oligocene (undifferentiated) ____ __ _ _______ ------------------------------ 40

160

Limestone

Potential Water-Bearing Zones:

40

160

BROOKS COUNTY

Location: Barney

Well No.: GGS 87

Owner: No.1 A. J. Folsom

Driller: Winter Hardware Company

Drilled: August 1942

Thickness
(feet)
-----------------------------------------------------

Deptb (feet)

No samples __

10

10

In Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained; inclusions of kaolin, white,

sandy; some clay, light-gray__ ___ _________ _____ __________________

90

100

In Miocene (Undifferentiated):

Clay: dark-brown to pale-green; limestone, white, sandy;

dolomitic limestone, brown, saccharoidal ____________________________ 120

220

Summary:

No samples

_________________________ ------..--------------------- _. _______________________ 10

10

In Pliocene to Recent (undifferentiated)

__________......____________.,________ 90

100

Miocene (undifferentiated) .._. _.,__

120

220

1Reworked( '!) fossil of middle Eocene- age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

35

Potential Water-Bearing Zones:

Thickness (feet)

Sand: fine to medium-grained

20

Limestone ---- ________________ ------------- -------------- ---------------- --------------------------- 60

Depth (feet)
100 200

Location: 2,780 ft. south, 1,570 ft. west of northeast corner of Land Lot 454, 12th Land District
Owner: No. 1-B E. M. Rogers, Sr. Driller: D. E. Hughes et al Drilled: April 1949

BROOKS COUNTY
Well No.: GGS 184 Elev.: 133
(derrick floor)

Thickness Depth

(feet)

(feet)

No samples _____

690

690

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, crystalline, much calcitized, somewhat

granular (in texture), fossiliferous (macroshells, echinoid

and bryozoan remains, and frequent Foraminifera)

190

885

Amphistegina pinarensis var. at 730-740.

Camerina striatoreticulata abundant at 830-840.

Middle Eocene: Claiborne Group (Undifferentiated):

Limestone: cream, considerably calcitized, granular, cherty,

coarsely glauconitic at certain levels __

500

Lower Eocene(?): Wilcox Group (Undifferentiated):

Sand: fine to medium-grained, glauconitic, micaceous, pyriti-

ferous; interbedded clay, dark, grayish-green, micaceous,

carbonaceous, laminated ___ . -----------------------------

___________________ 90

Sand: coarse-grained, subangular, varicolored, grains of

pale-green quartz at depth ___________________________

130

Paleocene: Midway Group: Clayton Formation:

Limestone (or indurated sand) : g-ray, very sandy, glauconitic

(finely disseminated), fossiliferous (Foraminifera) ________

15

Operculinoides catenula at 1620-1630.

Indurated sand: gray, fine-grained, glauconitic (finely dis-

seminated) ____________________ ------ - -- -----------------------------------------

90

Pseudophragmina stephensoni, Operculinoides catenula at 1630-1640.

1,385
1,475 1,605 1,620 1,710

36

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Clay: dark-gray to black, fissile, carbonaceous, micaceous; in-

terbedded limestone, gray, sandy, coarsely glauconitic

85

Depth (feet)
1,795

Robulus midwayensis at 1780-1790.

Limestone: gray, rather dense, somewhat crystalline, sandy,

coarsely glauconitic, fossiliferous

100

Robulus pseudo-mamilligerus at 1790-1800.

1,895

Sand: fine to coarse-grained, angular

25

Marl: gray, somewhat indurated, chalky, fossiliferous (some

Foraminifera) ; interbedded limestone, as above

300

1.920 2,220

Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):

Marl: gray to brown at depth, chalky, glauconitic, sandy at

various levels, micaceous, pyritiferous, fossiliferous (macro-

shells and Foraminifera at certain horizons)

785

Glauconite common at 2220-2230.

Globotruncana cretacea, Anomalina sp. at 2230-2240.

Sand: fine to medium-grained, indurated, micaceous, phos-

phatic, fossiliferous (macroshells) ; interbedded clay or

shale, brown, micaceous, carbonaceous

130

Vaginulina texana at 3100-3110.

3,005 3,135

In Tuscaloosa Formation: Sand: fine to medium-grained, glauconitic; interbedded clay or shale, dark-gray, fissile (splintery), carbonaceous, micaceous (finely disseminated)_____ __ ---------------------------------------------- 190
Shale: dark-gray to black, carbonaceous, fissile, micaceous; interbedded sand, as above ------------------------------------------------------------ 155
Sand: fine to medium-grained, somewhat indurated, glauconitic__ 30
Shale: as above _________________________ --------------------------------------------------------- 33
Sand: fine to medium-grained, somewhat indurated, glauconitic; interbedded shale, as above ---------------------------------------------------- 67

3,325
3,480 3,510 3,543
3,610

''"

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

37

Thickness (feet)
Sand: coarse-grained, angular, arkosic, glauconitic and finergrained at certain levels; interbedded clay, green to tan to red (mottled), sandy, micaceous, sideritic at certain horizons__ 240
Sideritic nodules common at 3620-3630.

Depth (feet)
3,850

Summary:

No samples ------------------------

------------------- --------------------------------- 690

In upper Eocene (Ocala limestone)___________

______________________________ 195

Middle Eocene (Claiborne group, undifferentiated)-------------------------- 500

Lower Eocene ( ?) (Wilcox group, undifferentiated) __

220

Paleocene (Clayton formation)__ ------------------------------------- ______

615

Upper Cretaceous (post-Tuscaloosa, undifferentiated) _____________________ 915

Upper Cretaceous (In Tuscaloosa formation) _______________________________ 715

690 885 1,385 1,605 2,220 3,135 3,850

Limestone ---------

Potential Water-Bearing Zones:

195

885

Remarks:
All potential water-bearing sands below depth 1,385, probably carrying salt water, hence not suitable as sources of fresh water.

Location: Quitman Owner: City of Quitman Driller: M. M. Gray Drilled: 1955

BROOKS COUNTY
Well No.: GGS 469 Elev.: 1801

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Clay, mottled to pale-green to tan, sandy, limonitic; sand, fine

to medium-grained; inclusions of kaolin, white, sandy, mica-

ceous; some lignite____________

____________________

80

80

In Miocene (Undifferentiated):

Clay: pale-green, sandy, cherty; limestone at depth, white,

sandy, fossiliferous; dolomitic limestone, brown, saccha-

roidal __________

-- - - -- - -- ---- --------- 70

150

Archaias sp. at 100-130.
- Dolomitic limestone at 130-150.
'Average elevation taken from State Highway map.

38

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: gray, dense (calcitized), nodular, fossiliferous___________ 115

Rotalia byramensis var. at 150-160. Dictyoconus2 sp. at 160-170. Miliolidae prominent at 190-200.

Dentb (feet)
265

Upper Eocene(?): Jackson Group: Ocala Limestone: Dolomitic limestone: light-brown, saccharoidaL__

39

304

Summary:
Pliocene to Recent (undifferentiated) _____ In Miocene (undifferentiated) ___ Oligocene (undifferentiated) _ Upper Eocene (?) (Ocala limestone) ________________ . ----------------------

80

80

70

150

115

265

39

304

Limestone - --

Potential Water-Bearing Zones:

115

265

BRYAN COUNTY

Location: 0.5 mi. east of intersection of U.S. Highway 17 Well No.: GGS 65

on Bryan Neck Road at Richmond Hill

Elev.: 14

Owner: Henry Ford

Driller: W. E. Floyd, Jr.

Drilled: May 1939

Thickness Depth

(feet)

(feet)

---------------------------------------------------

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, finely disseminated phosphatic grains;

interbedded clay, dark-gray to tan to red (mottled), some-

what fissile, lignitic, micaceous _________________

30

30

Sand: fine to coarse-grained, arkosic

10

40

No samples_

310

350

In Miocene (Undifferentiated):

Clay: dark-green, silty, phosphatic; limestone, white, very

sandy, phosphatic ------------------------------------------------------------------------- 100

450

No samples _________________

50

500

'Reworked ( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

39

In Upper Eocene: Jackson Group: Ocala Limestone:

Thickne<ls (feet)

Limestone: white, crystalline (much calcitized), fossiliferous, (abundant bryozoan remains and Foraminifera) ___________________ _

Asterocyclina nassauensis, Pseudophragmina flintensis, Operculinoides floridensis at 500.

Depth (feet)
500

Summary:

Pliocene to Recent (undifferentiated)

__________________________ _

40

40

No samples ------------------------------------------ -------------------- --------------------------- 310

350

In Miocene (undifferentiated)_____ _ _ __ _____ __

_____________________ 100

450

No samples ------------------------------------------

-- -- -----------

50

500

In upper Eocene (Ocala limestone) _

?

500

Potential Water-Bearing Zones: Limestone --------- . -------------- --------------- ..

?

500

Location: In Pembroke Owner: No. 1 City of Pembroke Driller: M. M. Gray Drilling Company Drilled: 1955

BRYAN COUNTY
Well No.: GGS 459 Elev.: 95

Thicknes" Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, limonitic, arkosic; interbedded

clay, bluish-gray to tan to red (mottled), sandy ___________________ ____ 30

30

Miocene (Undifferentiated):

Clay: dark-green, somewhat indurated, blocky, sandy

10

40

Sand: very coarse-grained, arkosic

50

90

Clay: dark-green, sandy; interbedded sand, fine to coarse-

grained, arkosic _____ ____________________ ______________ _______________________ ______________ 40

130

Clay: dark-green, sandy, cherty _________

60

190

Black, phosphatic pebbles prominent at 180-190.

Clay: as above; interbedded dolomitic limestone, light-brown,

sandy, phosphatic; sand, fine to coarse-grained, phosphatic____ 50

240

40

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Clay and sand: as above; interbedded limestone, light-gray to

white, very dense (much calcitized), sandy, phosphatic

110

Depth (feet)
350

Dark-green chert prominent at 260-270.

Oligocene (Undifferentiated):

Limestone: gray to cream at depth, dense (much calcitized),

nodular, somewhat sandy, fossiliferous (casts and molds of

megafossils and some Foraminifera) _____________________ _

40

390

Rotalia mexicana var. at 350-360.

Miliolidae abundant 370-380.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream to white at depth, somewhat saccharoidal

(much calcitized), fossiliferous (macroshells, bryozoan re-

mains, and Foraminifera) _______________ ______________ ______________

87

477

Macroshells prominent at 390-400.
Operculinoides floridensis at 390-400. Asterocyclina nassauensis, Gypsin,a vesicularis at 400-410. Pseudophragmina flintensis at 420-430.

Summary:

Pliocene to Recent (undifferentiated)

30

30

Miocene (undifferentiated) ________________________ _

320

350

Oliogocene (undifferentiated) __________

40

390

Upper Eocene (Ocala limestone)__________ __________________________________________ 87

477

Limestone

Potential Water-Bearing Zones:

127

477

Location: 3 mi. northeast of Statesboro, 0.1 mi. northwest of Highway 73 (Dover Road), at airfield
Owner: No.2 well at Airfield (City of Statesboro) Driller: Stevens Southern Company Drilled: November 1942

BULLOCH COUNTY
Well No.: GGS 81 Elev.: 171

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand : fine-grained to coarser-grained at depth; some clay,

brick-red, sandy ------------------------------------------------------------------------------- 80

80

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

41

Miocene (Undifferentiated): Clay: gray to yellowish-green, fissile, sandy__

Thickness Depth

(feet)

(feet)

20

100

Sand: fine to coarse-grained, arkosic; clay, as above, but

phosphatic ___ __________________ _______________ ___ __ __ -------------------------------------- 40

140

Clay: dark-green, blocky, phosphatic; interbedded with ton-

gues of sand, fine to coarse-grained, phosphatic

120

260

Black phosphatic pebbles abundant at 140-160.

Clay: as above; interbedded limestone, light-gray, dense

(much calcitized), sandy, phosphatic _________________ ________________________ 20

280

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic -------------------------------------------------------------------------- _______________________ 20

300

Oligocene (Undifferentiated):

Limestone: cream, massive (much calcitized), nodular, some-

what oolitic, fossiliferous (casts and molds of Gastropods

and Foraminifera) ------------------------------------------------------------

100

400

Rotalia mexicana var., Gypsina globula1 at 300-320. Lepidocyclina mantelli at 340-360.

Upper Eocene(?): Jackson Group: Ocala Limestone:

Limestone: cream but somewhat whiter than above, granular,

fossiliferous (Foraminifera) _________________ --------------------------------------- 20

420

Gypsina globula1 at 400-420.

No samples ___________________________________

20

440

In Middle Eocene(?) (Undifferentiated):

Indurated sand: fine to medium-grained, angular, fossilifer-

ous (casts and molds of Pelecypods); some limestone

(cave), as above ___ ------------------------------------------------------------------------ 35

475

Summary:

Pliocene to Recent (undifferentiated)_

__ ____________ __________________ 80

80

Miocene (undifferentiated) ______________

_________________________

220

300

Oligocene (undifferentiated)

_______ ______________ ______________

100

400

Upper Eocene (Ocala limestone)__________ ____________________ ___________________________ 20

420

No samples ______________________________ ---------------------------------------- _____________________ 20

440

In middle Eocene ( ?) (undifferentiated)_______________________ ______________ 35

475

Potential Water-Bearing Zones:
-Limestone
'Reworked ( ? ) fossil of middle Eocene age.

120

420

42

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Southwestern part of city, 0.5 mi. west of Central of Georgia R.R. in Statesboro
Owner: City of Statesboro No. 3 Driller: Layne-Atlantic Company Drilled: March 1954

BULLOCH COUNTY
Well No.: GGS 378 Elev.: 219

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, coarser-grained at depth,

arkosic, finely disseminated phosphatic grains _________________________ 20

20

Miocene (Undifferentiated):

Clay: yellowish-green, sandy, phosphatic at depth; inter-

bedded sand, fine to coarse-grained, arkosic _______________________ 185

205

First observed phosphatic pebbles at 175-185.

Sand: fine to coarse-grained, phosphatic _____________

80

285

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic, fossiliferous (macroshells) _____________________________

40

325

Sand: fine to coarse-grained, phosphatic; interbedded dolo-

mitic limestone, as above; limestone, gray, dense, sandy,

phosphatic _______________________ _---------------------------- --------------------------------- 40

365

Oligocene (Undifferentiated):

Limestone: cream, massive (much calcitized) nodular, some-

what oolitic, cherty, fossiliferous (casts and molds of Gas-

tropods and Foraminifera) _________________________________________________

60

425

Rotalia mexicana var. at 365-375. Rotalia mexicana var., Gypsina globula1 at 375-385.

Limestone: as above, but whiter in color__ __

40

465

In Upper Eocene(?): Jackson Group': Ocala Limestone:

Limestone: white to cream, rather massive, fossiliferous

(some Foraminifera)

------------------ 75

540

Gypsina globula common, Lepidocyclina sp. at 465-475. Lepidocyclina sp. common to abundant at 485-495.

1Reworked( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

43

Middle Eocene: Claiborne Group (Undifferentiated):

Thickness (feet)

Limestone: gray, extremely dense (highly calcitized), sandy,

finely disseminated phosphatic grains, fossiliferous (casts

and molds of megafossils and rare Foraminifera) ; inter-

bedded clay, olive-green, sandy ______________________________________

85

Limestone: white, dense (much calcitized), sandy, sparsely

glauconitic, fossiliferous (fragments and molds of mega-

fossils); interbedded dolomitic limestone, dark-brown, sac-

charoidal, sandy ____

------------------------------------- ___________________

200

Dolomitic limestone: dark-brown, saccharoidal, coarsely but

abundantly glauconitic

-------------------------------------------

60

Marl: gray, somewhat sandy, glauconitic, fossiliferous (Fora-

minifera)

____________________________________________________________________ _

36

Gyroidina soldanii var., Asterocyclina monticellensis, Lepidocyclina (Polylepidina) antillea, Cibicides mississippiensis, Cibicides westi at 885-895.

Depth (feet)
625
825 885 921

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) _____________________ Oligocene (undifferentiated) ____________________________________ In upper Eocene ( ?) (Ocala limestone) __________________________ Middle Eocene (Claiborne group, undifferentiated) ________

20

20

345

365

100

465

75

540

381

921

Potential Water-Bearing Zones:

Sand: fine to coarse-grained__________

80

285

Limestone ____________

_______________________

175

540

Limestone1 _____ _

------------------------------------------ 285

825

Location: Owner: No.1 Willow Hill Elementary School Driller: Layne-Atlantic Company Drilled: September 1954

BULLOCH COUNTY Well No.: GGS 430

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, arkosic; and some clay, bluish-

- gray to red (mottled), sandy____

____________________ _

1Not a porous limestone, but should furnish some water.

40

40

44

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Miocene (Undifferentiated):

Thickness (feet)

Clay: yellowish-green, sandy; interbedded sand, fine to coarse-grained _____________________________________________________ ----------------------------- 78

Depth (feet)
118

Sand: fine to coarse-grained; interbedded clay, green, sandy,

phosphatic (at depth) ; thin tongues of limestone, white,

sandy, phosphatic __________________ -------------------------------------------------------- 230

348

Sand, fine to coarse-grained at 118-130. Sand, fine to coarse-grained at 135-150. Sand, fine to coarse-grained at 203-216. Sand, fine to coarse-grained at 223-250. Sand, fine to coarse-grained at 268-276. Sand, fine to coarse-grained at 282-340.

Oligocene (Undifferentiated):

Limestone: dark-gray to pinkish to cream, massive, nodular

(much calcitized), somewhat oolitic, cherty, fossiliferous

(casts and molds of Gastropods and Foraminifera) _________

108

456

Rotalia mexicana var., Asterigerina subacuta at 350-360. Operculinoides sp. at 360-370. Lepidocyclina sp., Asterocyclina1 sp. at 386-396. Eponides byramensis at 396-406.

Summary:

Pliocene to Recent (undifferentiated) ____________________________________

Miocene (undifferentiated) _

_________________________

Oligocene (undifferentiated) _____ _________________

40

40

308

348

108

456

Potential Water-Bearing Zones:

Sand: fine to coarse-grained __________________________________________

12

130

Sand: fine to coarse-grained _______________

15

150

Sand: fine to coarse-grained _______________

13

216

Sand: fine to coarse-grained ___________________

27

250

Sand: fine to coarse-grained ____________________________________

8

276

Sand: fine to coarse-grained___________________________________________________________

58

340

Limestone ________________________________ ------------------------------------------------------------

108

456

'Reworked(?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

45

Location: owner: No. 1 Nevils Elementary School Driller: Layne-Atlantic Company
Drilled : November 1954

BULLOCH COUNTY Well No.: GGS 432

Thickness Depth

(feet)

(feet)

pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, arkosic; some clay, bluish-gray

to tan to red (mottled), sandy, limonitic_________________ ---------------------- 20

20

Miocene (Undifferentiated):

Clay: yellowish-green to purple, sandy______

35

55

Clay: yellowish-green, sandy, cherty; interbedded sand, fine

to coarse-grained, phosphatic _------------------------------------------------------ 215

270

Brown phosphatic pebbles and pale-green chert prominent at 65-70.

Fine to coarse-grained phosphatic sand at 85-105.

Sand: fine to coarse-grained, phosphatic

40

310

Clay: dark-green, sandy, phosphatic; interbedded limestone,

white, sandy __

--------------------- ______________ ----------------- 20

330

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic, fossiliferous (macroshells)

__________ ____

20

350

Clay: dark-green to gray, very sandy, phosphatic, fossilifer-

ous (macroshells) __ __________________ _______________________ _ __ ________________ 20

370

Limestone: light to dark-gray, extremely dense (much calci-

tized), very sandy, coarsely phosphatic, fossiliferous (frag-

ments and casts of megafossils) __________________ _____ ___________________ 10

380

Oligocene (Undifferentiated):

Limestone: pinkish to cream, very dense and massive (much

calcitized), nodular, somewhat oolitic, cherty, fossiliferous

(casts and molds of megafossils and some Foraminifera)________ 80

460

Asterocyclina1 sp., Gypsina globulat, Pyrgo sp., Rotalia mexicana var., at 380-385. Dictyoconus1 sp. at 395-400. Asterocyclina sp., Operculinoides1 sp. at 415-420. Argyrotheca sp. at 435-455.

'lteworked ( ?) fossil of middle Eocene age.

46

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Thickness (feet)

Pliocene to Recent (undifferentiated)

_______________________ _______________ 20

Miocene (undifferentiated) __________ __ ___________ ___________________________

360

Oligocene (undifferentiated)

_________________

_________________

80

Depth (feet)
20 380 460

Potential Water-Bearing Zones:

Sand: fine to coarse-grained

Sand: fine to coarse-grained_

Limestone _

______________________________________

20

105

40

310

80

460

Location: In Brooklet Owner: No.1 City of Brooklet Driller: M. M. Gray Drilling Company Drilled: 1957

BULLOCH COUNTY
Well No.: GGS 553 Elev.: 1591

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, angular, arkosic; interbedded

clay, mottled, sandy ____________________ _____________________

50

50

Miocene (Undifferentiated):

Clay: pale, yellowish-green, sandy, phosphatic and fossilifer-

ous at depth; interbedded sand, fine to coarse-grained, phos-

phatic _____ --- ----------------------------------------

------ ---------- 250

300

Limestone, white, sandy, phosphatic, with macroshells at 50-60. Black phosphatic pebbles common at 50-60. Macroshells prominent at 150-160.

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic ___ _ ___________________ ----------------------------------------

10

310

No samples ---------------------------------------------------------------

15

325

In Oligocene (Undifferentiated):

Limestone: cream, massive, somewhat granular and nodular,

somewhat saccharoidal and whiter at depth, cherty, fossili-

ferous (casts and molds of Gastropods, echinoid and bryo-

zoan remains, Ostracods, and Foraminifera) _______________________ 140

465

1Average elevation taken from State Highway map.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

47

Thickness (feet)
Pyrgo sp., Cibicides americanus, Cibicides lobatulus, Gypsina globula2 at 325-335.
Lepidocyclina sp., Dictyoconus2 sp., Rotalia mexicana var.,
Asterigerina subacuta, Eponides byramensis, Quinqueloculina sp. at 345-355.

Depth (feet)

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, somewhat calcitized, fossiliferous

(abundant bryozoan remains and some Foraminifera) ____________ 50

515

Robulus arcuato-striatus var. carolinianus, Frondicularia sp., Gypsina globula, Nonion planatus, Alabamina obtusa, Eponides jacksonensis, Nodosaria fissicostata, Globorotalia cocoaensis, Planulina cocoaensis at 465-475. Operculinoides floridensis at 485-495. Planularia sp. at 495-505.

Summary:

Pliocene to Recent (undifferentiated) ___________________

50

50

Miocene (undifferentiated) ________________________________________________________________ 260

310

No samples _______

________________________________

15

325

In Oligocene (undifferentiated) _______________

140

465

Upper Eocene (Ocala limestone) ____

50

515

Limestone

Potential Water-Bearing Zones:

190

515

Location: In City of Portal Owner: City of Portal Driller: Layne-Atlantic Company Drilled: 1959

BULLOCH COUNTY
Well No.: GGS 571 Elev.: 295 1

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: pale-yellowish-green with red streaks (mottled), very

sandy, limonitic ___

___________________________ __________________ 36

36

Sand: medium to coarse-grained, subangular, arkosic ___________________ 20

56

Clay: pale-yellowish-green to pale-brownish-gray, sandy
~
1Average elevation taken from State Highway map. 'Reworked(?) fossil of middle Eocene age.

102

158

48

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Clay: as above, but much sandier_____________________________________________________ 144

Depth (feet)
302

Clay: as above; some limestone, white, sandy -------------------------------- 41

343

No samples ---------------------------------------------------------------------------------------------- 20

363

Sand: coarse-grained, subangular, phosphatic, fossiliferous

(a coquina) -------------------------------------------------------- ---------------------------- 27

390

In Oligocene (Undifferentiated):

Limestone: cream, rather massive, somewhat nodular, fossili-

ferous (molds and impressions of Gastropods, bryozoan re-

mains, and some Foraminifera) ____ ________________ ----------------------- 54

444

Pyrgo sp., Rotalia mexicana var. at 398-423. Gypsina globula2 at 423-444.

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, much calcitized, somewhat granular, fos-

siliferous (bryozoan remains and some Foraminifera) ____

42

486

Lepidocyclina sp., Gypsina globula at 444-465.

Limestone: white, calcitized, somewhat fossiliferous (bryo-

zoan remains and some Foraminifera)

____________________ _

9

495

Middle Eocene: Claiborne Group (Undifferentiated):

Limestone: light-gray, rather dense, much calcitized, crystal-

line, fossiliferous (bryozoan remains, some of which are

impregnated with glauconite) ________________ ---------------------------------

10

505

Indurated sand: white to light-gray, fine-grained, fossilifer-

ous (impressions and molds of megafossils) ______________________________ 21

526

Summary:

Miocene (undifferentiated) -------------------------------- __ -------------------------------- 390

390

In Oligocene (undifferentiated) ___ -------------------------------------------------------- 54

444

In upper Eocene (Ocala limestone)-------------------------------------------------------- 51

495

Middle Eocene (Claiborne group, undifferentiated) __c_____________

31

526

Potential Water-Bearing Zones:

Limestone _------------------------------------------------------------------------------------------------- 105

495

'Reworked ( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

49

BURKE COUNTY

Location: 0.25 mi. east McBean-Waynesboro Road, in ditch, Well No.: GGS 131

south side of east-west improved road

Elev.: 129

owner: No.1 USGS Test Hole

Driller: Scott Drilling Company

Drilled: July 1946

Thickness Depth
-------------------------------------------------(f-ee-t)-- (feet)

Middle Eocene: Claiborne Group: Lisbon Formation:

Sand: fine to coarse-grained, lime nodules; some clay, brick-

red, sandy ------------------------------------------------------------------------------------------ 30

30

Upper Cretaceous: Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, arkosic, micaceous; in-

terbedded kaolin, black to light-gray to white, somewhat

sandy, micaceous ----------------------------------------------------------------------------- 572

602

Kaolin, black to light-gray, lignitic, very micaceous at 30-75. Kaolin, gray to red (mottled), micaceous, sandy at 175-210. Kaolin, gray to red (mottled), sandy, micaceous at 495-505. Kaolin, gray to red (mottled), sandy, ferruginous, micaceous; some sand, coarse-grained at 585-602.

Basement Complex (Undifferentiated): Clay: dark-green, highly micaceous, sericitic

18

620

Summary:

Middle Eocene (Lisbon formation) _____________ --------------------------------------

30

30

Upper Cretaceous (Tuscaloosa formation)____ __________________

572

602

Basement complex (undifferentiated) ________________________________

18

620

Potential Water-Bearing Zones:

Sand: fine to coarse-grained__________________________________ ------------------------------- 35

245

Sand: fine to coarse-grained___________________________________________________________

20

305

Sand: fine to coarse-grained____________________________________________________________________ 30

495

Sand: fine to coarse-grained____________________________________________________________________ 20

565

50

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 3 mi. north of Waynesboro on Briar Creek Owner: No. 1 John Thompson Driller: J. Rowell Drilled: August 1946

BURKE COUNTY
Well No.: GGS 139 Elev.: 199

Thickness Depth

(feet)

(feet)

No samples

44

44

In Middle Eocene: Claiborne Group (Undifferentiated):

Limestone: light-gray, dense (much calcitized), sandy, some-

what carbonaceous, finely glauconitic, phosphatic, fossili-

ferous at depth (Ostracods, Foraminifera, and macro-

shells) ; interbedded marl, light-gray, glauconitic ____________________ 96

140

Clay, light-gray, somewhat indurated, finely glauconitic, at 100-110.

Macroshells common at 120-140. No samples _________________________________________ ----------------------------

30

170

Sand: fine to coarse-grained, coarsely glauconitic__

?

170

Summary:

No samples ___________

--------------------------------------------------------------

In middle Eocene (Claiborne group, undifferentiated) __________

44

44

126

170

Potential Water-Bearing Zones:
Sand: fine to coarse-grained Sand: fine to coarse-grained__

30

140

?

170

Location: 2.5 mi. east of Greens Cut Owner: No. 3 well Three Creeks Oil Company Drilled: May 1923

BURKE COUNTY Well No.: GGS 220

Thickness Depth

(feet)

(feet)

Residuum:

Clay: reddish-brown, very sandy, limonitic; some residual

limestone ____________________________ ----------------------------------------------------------------- 30

30

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

51

Upper Eocene: Jackson Group: Barnwell Formation:

Thickness Depth

(feet)

(feet)

Limestone: white, dense, crystalline, sandy, sparsely phos-

phatic, fossiliferous (macroshells, echinoid and bryozoan

remains, and some Foraminifera) _______ ____________ _ ________________ 45

75

Elphidium texanum, Nonion inexcavatus, Valvulineria jacksonensis, Cibicides americanus var. antiquus at 30-75.

Middle Eocene: Claiborne Group: Lisbon Formation:

Marl: light-gray to pale, yellowish-green, sandy, limey, hard

lime nodules, fossiliferous at certain levels (echinoid and

bryozoan remains, Ostracods, and Foraminifera)

54

129

Spiroplectammina mississippiensis var., Textularia dibollensis, Nonion inexcavatus, Nonion advena, Discorbis georgiana, Siphonina claibornensis, Valvulineria danvillensis var. gyroidinoides, Cibicides pseudoungerianus var. lisbonensis, Cibicides americanus var. antiquus, Cibicides danvillensis at 116-118.

Clay: dark-green, blocky, somewhat indurated and tough,

sandy _______

__________________________________ _

16

145

Sand: fine to medium-grained; clay, light-gray to dark-brown,

block, carbonaceous, finely disseminated flakes of mica

16

161

Clay: dark-brown to black, lignitic, micaceous, sandy, coarse

grains of sand

____________ _

25

186

Clay: as above, but light-gray, very sandy _

9

195

Upper Cretaceous: Tuscaloosa Formation:

Sand: coarse-grained, angular, arkosic, many grains coa ted with white kaolin; interbedded clay (or kaolin), white to gray to red to purple (mottled), micaceous, somewhat sandy__ 644

Clay: light-gray to tan to olive-green to red (mottled) , side-

ritic, micaceous, greasy; interbedded sand, very coarse-

grained, angular, arkosic

______________ _________________________________ 86.7

Summary:

Residuum ___ ----------------

-------------------------------------------------

Upper Eocene (Barnwell formation)___________ -------------------------------

Middle Eocene (Lisbon formation) _______________ --------------------------------

Upper Cretaceous (Tuscaloosa formation)------------------------------------

30 45 120 730.7

839
925.7
30 75 195 925.7

52

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Potential Water-Bearing Zones:

Thickness (feet)

Sand: fine to coarse-grained____________________________________________________________________ 3 Sand: fine to coarse-grained____________________________________________________________________ 13 Sand: fine to coarse-grained _________________ ------------------------------------------------- 13
Sand: fine to coarse-grained__ ----------------------------------------------------------------- 25 Sand: fine to coarse-grained_____ -------------------------------------------------------------- 23 Sand: fine to coarse-grained______ ------------------------------------------------------------- 34

Depth (feet)
129 208 312 356 421 538

Remarks:
Other water-bearing sands are present below depth of 538 (above), but samples are not of sufficient excellence to prmit delineation.

Location: Approximately 2.5 mi. east of Greens Cut Owner:No. 2 well Three Creeks Oil Company Drilled: 1923

BURKE COUNTY Well No.: GGS 316

Thickness Depth

(feet)

(feet)

No samples ------------------------------------------------ _______________________ _

128

128

In Middle Eocene: Claiborne Group: Lisbon Formation:

Marl: cream to pale yellowish-green, somewhat sandy, glau-

conitic, limey, with hard lime nodules, fossiliferous (macro-

shells, echinoid and bryozoan remains, Ostracods, and

Foraminifera) ---------------------------------------------------------------------------------- 62

190

N onion advena, Discorbis georgiana, Gyroidina soldanii var., Cibicides americanus var. antiquus, Cibicides pseudoungerianus var., Cibicides danvillensis, Cibicides westi at 128-144.

Sand: fine to coarse-grained, subangular, sparsely phosphatic__ 24

214

Sand: fine to coarse-grained, subrounded; clay, dark-green,

somewhat indurated and fissile, micaceous; claystone, dark-

brown, dense, cherty ----------------------------------------------------------------------- 8

222

Sand: as above; clay, dark-green to dark-brown to black,

somewhat fissile, micaceous_____________________________________________

56

278

In Upper Cretaceous: Tuscaloosa Formation:

Sand: fine to coarse-grained, subangular, arkosic, many

grains coated with red clay ------------------------------------------------------------ 40

318

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

53

Thickness (feet)
Clay: black, fissile, lignitic, micaceous; sand, as above ______________ 2
Sand: fine to coarse-grained, subangular, abundantly limonitic ____ ---------------- ------------------------------------------------------------------------------- 7
Sand: coarse-grained, subangular, arkosic; interbedded kaolin, white, micaceous, sandy ------------------------------------------------------------ 35
Clay: light-gray to tan to red to purple (mottled), micaceous, sandy ---------------------------------------------------------------------------------------------------- 53
No samples ---------------------------------------------------------------------------------------------- 613

Depth (feet)
320
327
36~
415 1,028

In Basement Complex (Undifferentiated):
Crystalline rock: sand and clay; as above ___ ---------------------------------Crystalline rock: as above _______ -------------------------------------------------

3 1,031 2 1,033?

Summary:
No samples -------- ----------------------------------------------------------------------------------------- 128 In middle Eocene (Lisbon formation)-------------------------------------------------- 150 In Upper Cretaceous (Tuscaloosa formation)-------------------------------------- 137 No samples -----------------------------------------------------------------------------------------------~-- 615 In basement complex (undifferentiated) ____________ _____________ _______________ 5

128 278 415 1,028 1,033?

Potential Water-Bearing Zones:

Sand: fine to coarse-grained__________________ ------------------------------- ________________ 44

234

Sand: fine to coarse-grained________________ --------------------------- _______________________ 40

318

Sand: fine to coarse-grained_________________ ________________________ _____ _______________ 35

362

Location: Near Midville Owner: Midville Consolidated School Driller: Virginia Supply and Well Company Drilled: September 1954

BURKE COUNTY
Well No.: GGS 391 Elev.: 190

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: olive-green to tan to red (mottled), limonitic, sandy__________ 8

8

Clay: red to purple (mottled), sandy________________________ _____________________ 52

60

Upper Eocene: Jackson Group: Barnwell Formation:
Marl: yellowish-green to brown, carbonaceous, sandy; limestone, white to yellow, rather dense, nodular, saccharoidal,

54

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

sandy, cherty, fossiliferous, (fragments and casts of mega-

fossils, echinoid and bryozoan remains, and Foraminifera,

latter at depth) ________

-------------------------------------------------- 42

Nonion advena, Nonion inexcavatus, Valvulineria jacksonensis, Discorbis assulata, and Cibicides lobatulus at 78-102.

Depth (feet)
102

Middle Eocene: Claiborne Group: Lisbon Formation:

Sand: fine to coarse-grained, subangular, sparsely phos-

phatic, with brown pebbles; limestone, pale, yellowish-

green, dense, saccharoidal, sparsely phosphatic, sandy, fos-

siliferous (casts and molds of megafossils, echinoid and

bryozoan remains)

108

210

Limestone: pale, yellowish-green, dense, very sandy, sparsely

phosphatic, fossiliferous (casts and molds of megafossils) __

40

250

Summary:
Miocene (undifferentiated) _________ Upper Eocene (Barnwell formation) _______ Middle Eocene (Lisbon formation)

60

60

42

102

148

250

Sand _______ Limestone

Potential Water-Bearing Zones:

108

210

40

250

Location: Near Girard Owner: Girard Consolidated School Driller: Virginia Supply and Well Co. Drilled: September 1954

BURKE COUNTY
Well No.: GGS 392 Elev.: 230

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated): Clay: light to red (mottled), micaceous, very sandy

60

60

Upper Eocene: Jackson Group: Cooper Marl:
Sand: fine to coarse-grained, subangular, micaceous; limestone, white, somewhat saccharoidal, dense, sandy, sparsely

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

55

Thickness (feet)
phosphatic, fossiliferous (macroshells, echinoid and bryo-

zoan remains, Ostracods, and Foraminifera) ________

115

Spiroplectammina mississippiensis, Nonion advena, Nonion inexcavatus, Elphidium texanum, Valvulineria jacksonensis, Discorbis globulo-spinosa, Discorbis assulata, Guttulina irregularis, Sigmomorphina semitecta var., Reussella oligocenica at 103-137.

Depth (feet)
175

Summary:

Miocene (undifferentiated) ______________________________

60

60

Upper Eocene (Cooper marl)_____________

____________________________________ 115

175

Limestone ---

Potential Water-Bearing Zones:

20

157

Location: In Waynesboro Owner: No. 1 W. A. Wilkins Drilled: 1888

BURKE COUNTY
Well No.: GGS 520 Elev.: 280

Thickness Depth

(feet)

(feet)

No samples _________________________________________________________________________________________ 40

40

In Eocene (Undifferentiated):

Sand: fine-grained; clay, pink, sandy, micaceous __

20

60

Sand: fine to medium-grained, angular, with inclusions of

residual limestone ___ _________________ _______________ _____________________________________ 90

150

Sand: coarse-grained; limestone, white to gray, dense (much

calcitized), sandy, fossiliferous (macroshells, and some

bryozoan remains) ___________________________________________________________

80

230

Sand: fine to medium-grained, sparsely phosphatic; marl,

yellowish-green, somewhat indurated, silty, finely dissemi-

nated phosphatic grains, carbonaceous, micaceous __________

10

240

Marl: as above, but fossiliferous (Radiolaria, Ostracods, and

Foraminifera) _________ ____________________

____ ----------------------

50

290

Cibicides americanus var., Cibicides cf. C. refulgens at 240290.

Sand: fine-grained; marl, as above

20

310

56

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Clay: yellowish-green, noncalcareous, somewhat indurated, carbonaceous, micaceous; some sand, coarse-grained, phosphatic ------------------------------------------------------------------------------------------------- 30
No samples---------------------------------------------------------------------------------------------- 40

Depth (feet)
340 380

In Upper Cretaceous1 : Tuscaloosa Formation:

Sand: coarse-grained, angular, grains that resemble rose

quartz ------------------------------------------------------------------------------------------------- 30

410

Sand: fine to coarse-grained, arkosic; some clay or kaolin,

gray to tan to red (mottled), sandy, micaceous__________________________ 90

500

Clay: brick-red, sandy, micaceous_____________

200

700

Summary:

No samples ----------------------------------------------- -------------------- ----------------------------- 40

40

In Eocene (undifferentiated) ___________________ ------------------------------------------ 300

340

No samples ------------------------------------------- --------------------------------------------------- 40

380

In Upper Cretaceous (Tuscaloosa formation)_______

_________________ 320

700

Potential Water-Bearing Zones:

Sand: fine to coarse-grained__________________ ------------------------------------------------- 30

410

Remarks:
Samples on this well of poor quality, hence it is not feasible to pick additional water-bearing sands below a depth of 410 feet.

Location: 200 ft. north of south line and 200 ft. east of west line of Land Lot 328, 4th Land District
Owner: No.1 J. W. West Driller: Sowega Minerals Incorporated Drilled: January 1950

CALHOUN COUNTY
Well No.: GGS 192 Elev.: 349

Thickness Depth

(feet)

(feet)

No samples ____________ ------------------------------------------------------------------------------- 400

400

In Paleocene: Midway Group: Clayton Formation:

Sand: medium to coarse-grained, angular, abundantly glau-

conitic; marl, gray, micaceous, carbonaceous; limestone,

light-gray, sandy, glauconitic, fossiliferous (macroshells) ______ 40

440

Robulus midwayensis, Anomalina midwayensis at 410-420.

'According to McCallie's log of this well (USGS, WSP 341, p. 167) probable top of Upper Cre t&ceous at 310.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

57

Thickness (feet)

Limestone: cream, nodular, fossiliferous (macroshells, bryo-

zoan remains and Foraminifera) ___________________________ _

120

Depth (feet)
560

Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):

Sand1 : fine to coarse-grained, angular grains__

40

Marl: gray, silty, micaceous, glauconitic, fossiliferous (macroshells, Ostracods, and Foraminifera) ; interbedded sand, fine to medium-grained, angular, glauconitic, phosphatic, fossiliferous (macroshells at certain horizons) ________________________ 1,420

Guembelina sp. at 650-660. Anomalina pseudopapillosa at 680-690. Kyphopyxa christneri at 1480-1510. Vaginulina texana at 1540-1570.

Sand: fine to medium-grained, angular, glauconitic, micaceous, fossiliferous (macroshells) ______________________________________________ 82

Sand: fine to medium-grained, somewhat indurated, highly micaceous, phosphatic, fossiliferous (macroshells) __________________ 68

600 2,020
2,102 2,170

Tuscaloosa Formation:
Sand: fine to coarse-grained, angular, arkosic; interbedded clay, pale-green, micaceous, sandy __________________ _____________________ 460
Clay, or shale: dark-gray to black, fissile, carbonaceous, micaceous (finely disseminated) ; interbedded sand, fine to medium-grained, angular, glauconitic, micaceous ____________________ 178
Sand: fine to coarse-grained, angular, arkosic; interbedded clay, pale-green, somewhat iron-stained, micaceous, sandy 112

2,630 2,808 2 2,920

Summary:

No samples ________ _________ __ __________

__________________ _ __________________ 400

In Paleocene (Clayton formation) _________________ _____________ _ ____________________ 160

Upper Cretaceous (post-Tuscaloosa, undifferentiated) ______________ 1,610

Upper Cretaceous (Tuscaloosa formation) ________________________ _____________ 750

400 560 2,170 2 2,920

Potential Water-Bearing Zones:

Limestone

120

560

Sand: fine to coarse-grained ______________

40

600

Sand: fine to coarse-grained ________ ______________ ____ ____ __ ___ _____________________ 80

950

'May represent basal Clayton formation. "Not reported below 2,920.

58

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

CALHOUN COUNTY

Location: 6 ft. west and 15 ft. south of north footing of steel water tower in Arlington
Owner: No. 2 City of Arlington Driller: Layne-Atlantic Company Drilled: January 1953

Well No.: GGS 330 Elev.: 306

Thickness Depth

(feet)

(feet)

Residuum:

Clay: pale olive-green to tan to red to purple (mottled),

very sandy, limonitic _______________________

125

125

Sand: fine to coarse-grained, angular _________

30

155

No samples _______________________________________________________________________________________ 20

175

In Middle Eocene: Claiborne Group (Undifferentiated):

Sand: fine to coarse-grained, angular, somewhat phosphatic,

fossiliferous (macroshells); interbedded marl, pale-green

to light-gray, silty, carbonaceous, micaceous, fossiliferous

(some Foraminifera) ; limestone, light-gray, dense, very

sandy, glauconitic, fossiliferous (macroshells, some bryo-

zoan retnains, and Foraminifera)

__________________ _

185

360

Asterigerina lisbonensis at 228-239. Discorbis yeguaensis at 269-280.

Glauconite prominent at 341-351.

Lower Eocene(?): Wilcox Group (Undifferentiated):

Limestone: light-gray, dense, sandy, abundantly glauconitic ___

5

365

Clay: dark-gray, silty, carbonaceous, micaceous ___________________________ 17

382

Summary:

Residuum

____ _______________________

____________________________

155

155

No samples _______________ ________________________ ________________________________________

20

175

In middle Eocene (Claiborne group, undifferentiated)

185

360

Lower Eocene ( ?) (Wilcox group, undifferentiated) _______________

22

382

Potential Water-Bearing Zones:
Sand: fine to coarse-grained ______________________________ Sand: fine to coarse-grained _________________________

30

155

76

354

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

59

Remarks:
Additional aquifers, as for example the Clayton formation, occur in this area at depths lower than the total depth (382) of the above described well. Quality of samples on this well is poor; much better cuttings could have been collected. Moreover, the sands penetrated during drilling of this well were reported dry. This report is considered questionable. Many of these sands might have been sealed-off by mud during drilling, hence appeared to be dry when tested.

CALHOUN COUNTY

Location: 12 ft. north and 6 ft. west of southwest footing of water tower, 2 block north of Courthouse, west side of Highway 55, in Morgan
Owner: No. 1 City of Morgan Driller: Layne-Atlantic Company Drilled: December 1952

Well No.: GGS 331 Elev.: 252

Thickness Depth

(feet)

(feet)

Residuum:

Sand : fine to coarse-grained, subangular, limonitic; inter-

bedded clay, light-gray with red streaks (somewhat mot-

tied), sandy

4

4

Clay: light-gray to pale-brownish-green with tan to red

streaks (mottled), very sandy, limonitic _____________________

20

24

Upper Eocene(?): Jackson Group: Ocala Formation:

Limestone: white to cream, rather dense and massive, some-

what saccharoidal, sandy, fossiliferous (molluscan shells,

bryozoan remains, and Foraminifera) _________________ _____________ 10

34

Lepidocyclina sp., Camerina sp. at 24-34.

In Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: white to light-gray, dense, crystalline, coarsely

but sparsely glauconitic, sandy, somewhat fossiliferous

(molluscan shells, bryozoan remains, Ostracods, and Fora-

minifera) ; interbedded clay, light-gray, sandy, carbona-

ceous, micaceous; indurated sand or sandstone, pale-green,

fine-grained, very dense, highly siliceous, micaceous, car-

bonaceous

81

115

N onion advena, Cibicides pseudoungerianus var ., Cibicides cf. C. westi at 45-55. Cibicides westi at 55-65. Asterigerina lisbonensis common at 65-75.

60

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Tallahatta Formation:

Thickness Depth

(feet)

(feet)

Sand: fine to coarse-grained, subangular, indurated and

coarsely glauconitic at certain levels, sparsely phosphatic,

fossiliferous at certain levels (fish teeth, molluscan shells,

and Foraminifera) ; interbedded clay, light-gray to pale-

green, silty, carbonaceous, micaceous, fossiliferous (Radio-

laria, small molluscan shells and Foraminifera) ______________

95

210

Nonion advena, Discorbis sp., Gyroidina soldanii var., Valvulineria jacksonensis var., Cibicides danvillensis (common), Cibicides blanpiedi at 115-125.

Lower Eocene: Wilcox Group (Undifferentiated):

Marl: light-gray to pale-brownish-green, somewhat lami-

nated, silty, glauconitic, carbonaceous, micaceous, fossili-

ferous (Foraminifera) _____ ---------~--------------------------------------------------- 25

235

Spiroplectammina wilcoxensis, Discorbis midwayensis, Valvulineria wilcoxensis, Valvulineria scrobiculata, Anomalina acuta at 210-215.

Clay: dark-gray, silty, somewhat glauconitic, lignitic, mica-

ceous, pyritiferous, fossiliferous (microfossils); interbed-

ded limestone, white to light-gray, coarsely glauconitic,

sandy, fossiliferous (macroshells, Ostracods and Fora-

minifera) ____________________ ------------------------------------------------------- _____________ 125

360

In Paleocene: Midway Group: Clayton Formation:

Sand: fine to medium-grained, subangular, abundantly glau-

conitic, some coarse, subangular, pale-green grains; inter-

bedded clay, light-gray, blocky, micaceous to black, some-

what laminated, finely micaceous, carbonaceous, fossilifer-

ous (Ostracods and Foraminifera) _____ ---------------------------------------- 20

380

Indurated sand: light-gray, fine-grained, subangular, glauco-

nitic (finely disseminated grains), micaceous, fossiliferous

(macroshells, Ostracods, and Foraminifera) ; interbedded

clay, dark-gray to black, laminated, silty, finely micaceous,

carbonaceous _________________________________________________________________ ----------------- 50

430

Nodosaria affinis, Siphonina prima, Bulimt"na cacumenata, Sigmomorphina soldadoensis, Cibicides newmanae, Anomalina midwayensis at 380-390.
Robulus midwayensis, Discorbis midwayensis, Eponides lotus, Bulimina cacumenata (common), Operculinoides catenula (common), Anomalina midwayensis at 390-400.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

61

Thickness (feet)
Limestone: white to light-gray, rather dense and crystalline,
somewhat softer at depth, sparsely glauconitic, sandy to
very sandy at depth, pyritiferous at certain levels, fossili-
ferous (macroshells, Bryozoa, Ostracods and Foraminifera)____ 227

Depth (feet)
657

Upper Cretaceous: Providence Sand:

Marl: dark-bluish-gray, somewhat chalky, micaceous, pyriti-

ferous, fossiliferous (macroshells, Ostracods, and Fora-

minifera) ------------------------------------------------------------------------------------------- 10

667

Guembelina sp., Globotruncana sp., Anomalina pseudopapillosa at 657-66'1'.

Summary:

Residuum

----- ------------ ---------------------- ----------------- ------------------------------ 24

24

Upper Eocene(?) (Ocala limestone) ___ ________________ _________________________ 10

34

In middle Eocene (Lisbon formation) ________________________________________

81

115

Middle Eocene (Tallahatta formation) _______________________________

95

210

Lower Eocene (Wilcox group, undifferentiated) ____________________________ 150

360

In Paleocene (Clayton formation) ____________ ____________________________________ 297

657

Upper Cretaceous (Providence sand)

__________________________________________ 10

667

Potential Water-Bearing Zones:

Sand: fine to coarse-grained __________________ ___________________________________________ 95

210

Sand: fine to coarse-grained ____ __________________________________

20

380

Limestone _____ __ _____

_ ______________________________________________ _

227

657

Remarks:
Cuttings are thought to be of rather poor quality in intervals 360-380 and 595-657. Thus, the abundantly glauconitic sand in interval 360-380 is characteristic of the lower Wilcox rather than the Paleocene. Here the top of the Paleocene is therefore in doubt.

Location: 0.09 mi. north of Highway 37, 54 ft. west of Seaboard Air Line RR., 30 ft. east of reservoir in Edison
Owner: No. 2 City of Edison Driller: Layne-Atlantic Company Drilled: July 1955

CALHOUN COUNTY
Well No.: GGS 353 Elev.: 312

Thickne-ss Depth

(feet)

(feet)

No samples

15

15

In Residuum:

Clay: tan to olive-green (somewhat mottled), sandy, limonitic____ 8

23

62

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Sand: fine to coarse-grained, angular, limonitic, and con-

siderable residual limestone -----------------------

27

Depth (feet)
50

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: gray, dense, sandy, glauconitic (finely dissemi-

nated grains), fossiliferous (a coquina at certain levels,

echinoid and bryozoan remains, and some Foraminifera);

interbedded marl, light-gray, silty, glauconitic, somewhat

micaceous, fossiliferous (Ostracods and Foraminifera) ;

sand, fine to coarse-grained, angular _

55

105

Tallahatta Formation:

Sand: fine to coarse-grained, subangular, sparsely phos-

phatic; interbedded clay, gray to yellowish-green, sandy,

carbonaceous, micaceous

70

175

Lower Eocene: Wilcox Group (Undifferentiated):

Limestone: gray, dense, crystalline, sandy, coarsely glauco-

nitic, fossiliferous (fragments and molds of megafossils)

15

190

Clay: dark-gray, sandy, carbonaceous, micaceous, pyritiferous____ 110

300

Sand: fine to medium-grained, subangular, abundantly glauco-

nitic

25

325

Paleocene: Midway Group: Clayton Formation:

Sand: fine to coarse-grained, subangular, grains of pale-

green quartz; clay, light-gray to brown to red (mottled)

blocky, sandy, carbonaceous, bauxitic ( ?) _________

___________________ 40

365

Indurated sand: fine-grained, somewhat argillaceous, glauco-

nitic, fossiliferous (macroshells and Foraminifera) ________________ 25

390

Operculinoides catenula at 340-390.

Limestone: white, gray at depth, dense, crystalline, sandy,

fossiliferous (megafossils, bryozoan remains, and Fora-

minifera)

115

505

Operculinoides catenula common at 390-433.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

63

Thickness (feet)
Sand: fine to coarse-grained, angular; clay, yellow to tan, somewhat sandy ------------------------------------------------ ------------------------------- 10

Depth (feet)
515

Summary:

No samples _- ----- -------------------------------- --------------------------------------------------- 15

15

In residuum - ------------------- -------- --------

- ------------------------------------------- 35

50

Middle Eocene (Lisbon formation) ------------------------------------------------------ 55

105

Middle Eocene (Tallahatta formation) ------------------------------------------------ 70

175

Lower Eocene (Wilcox group, undifferentiated) ------------------------------ 150

325

Paleocene (Clayton formation) __ ----------------------------------------------------------- 190

515

Potential Water-Bearing Zones:

Sand: fine to coarse-grained _-------------------- __________________

61

166

Sand: fine to coarse-grained ----------------------------

______________________

65

365

Limestone

------------------------------------------ ------------------ ---------------------- 115

505

Sand: fine to coarse-grained __

____ _____ ______ 10

515

Location: St. Marys Owner: St. Marys Kraft Corporation Driller: Layne-Atlantic Company

CAMDEN COUNTY
Well No.: GGS 54 Elev.: 13

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, finely disseminated phosphatic

grains; interbedded clay, dark-gray, lignitic, micaceous

30

30

Sand: medium to coarse-grained, rounded, phosphatic

28

58

. Limestone: dark-gray, very dense (highly calcitized), sandy,

sparsely phosphatic ___________ _____

__________ ____ ____

29

87

Limestone: light-gray, very dense (highly calcitized), some-

what saccharoidal, sandy, sparsely phosphatic, fossilifer-

ous (casts and impressions of megafossils) ______ _________________ _______ 20

107

Sand: medium to very coarse-grained, rounded, phosphatic;

clay, gray, silty__

63

170

Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic, cherty; interbedded

sand, fine to coarse-grained -------------------------------- ___________________________ 160

330

64

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Dolomitic limestone: light-brown, saccharoidal, sandy, phosphatic -------------------------------------------------------------------------------------------------- 20

Sand: fine to coarse-grained, phosphatic; dolomitic limestone

(cave) as above ________________

__________________________ _______________ 20

Depth (feet)
350
370

Clay: green, sandy, phosphatic, fossiliferous (macroshells);

interbedded limestone, white, dense (much calcitized),

sandy, phosphatic, fossiliferous (macroshells) _____________ _____ 100

470

Dolomitic limestone: brown, saccharoidal, sandy, phosphatic;

sand, fine to medium-grained, phosphatic __ _____ __ ______ ________

20

490

Clay: dark-green, sandy, coarsely phosphatic

50

540

Oligocene (Undifferentiated):

Limestone: light-gray to white, dense (much calcitized), mas-

sive, fossiliferous (molds and fragments of megafossils

and bryozoan remains, and some Foraminifera) _

20

560

Discorbis subaraucana, Siphonina advena at 540.

Up-per Eocene: Jackson Group: Ocala Limestone:

Limestone: as above; interbedded dolomitic limestone, brown,

saccharoidal ___ _ ---------------------------------------------------- _______________________ 356

916

Operculinoides sp. at 560. Pseudophra.gmina flintentis at 600.

Middle Eocene: Claiborne Group (Undifferentiated):

Limestone: as above; interbedded dolomitic limestone, dark-

brown, saccharoidal _____________________

------------------------------------------ 144

1,060

Summary:

Pliocene to Recent (undifferentiated) ____________ ---------------------------

170

Miocene (undifferentiated) _------------------------------ ----------------------------------- 370

Oligocene (undifferentiated) --------------------------------- ------------------------------ 20

Upper Eocene (Ocala limestone) ---------------------------------------------------------- 356

Middle Eocene (Claiborne group, undifferentiated) ___________

144

170 540 560 916 1,060

Potential Water-Bearing Zones:

Sand: fine to coarse-grained ____ ___________ _____ _____ _________ ___ _____________

63

170

Sand: fine to coarse-grained ___________

---------------------------------------- 20

370

Sand: fine to coarse-grained _____________ ------------------------------------------------ 10

490

Limestone -------------------------------- ----------------------------------------------------------------- 320

860.

WELL LOGS OF THE COAS'fAL PLAIN OF GEORGIA

Location: St. Marys owner: No. 5 St. Marys Kraft Corporation Driller: Layne-Atlantic Company Drilled: October 1953

CAMDEN COUNTY
Well No.: GGS 364 Elev.: 11

Thickness Depth

(feet)

(feet)

Miocene to Recent (Undifferentiated):

Sand: fine-grained, finely phosphatic

25

25

Clay: dark-gray, sandy, micaceous, carbonaceous, fossilifer-

ous (macroshells)

___ __ ____________

17

42

Sand: fine to coarse-grained

24

66

Limestone: gray to light-brown, dense (much calcitized),

somewhat dolomitized, sandy, finely but sparsely phos-

phatic, fossiliferous (molds and impressions of megafossils)__ 54

120

Sand: coarse-grained (up to size of gravel), coarsely phos-

phatic; fragments of limestone as above _

210

330

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic; some coarse, gravelly sand as above

38

368

Clay: dark-green, sandy; much cave from above _

42

410

Sand: fine to coarse-grained, phosphatic; interbedded lime-

stone, white, dense (much calcitized), sandy, phosphatic,

fossiliferous (macroshells); some dolomitic limestone

98

508

Oligocene (Undifferentiated):

Limestone: light-gray, very dense (highly calcitized), nodu-

lar, saccharoidal, fossiliferous (macroshells, bryozoan re-

mains, and some Foraminifera)

___________________ _

22

530

Asterigerina sp., Siphonina advena, Discorbis assulata, Cibicides mississippiensis at 508-530.

Jpper Eocene: Jackson Group: Ocala Limestone:

Limestone: as above; interbedded dolomitic limestone at

depth

423

953

Operculinoides sp., Gypsina globula at 530-552.

66

GEORGIA GEOLG<llCAL SURVEY BULLETIN 70

Middle Eocene: Claiborne Group (Undifferentiated): Limestone as above; interbedded dolomitic limestone Dictyoconus sp. at 953-983.

Thickness Depth

(feet)

(feet)

237 1,190

Summary:
Miocene to Recent (undifferentiated) Oligocene (undifferentiated) Upper Eocene (Ocala limestone) ______________________ Middle Eocene (Claiborne group, undifferentiated) __ _

Potential Water-Bearing Zones:
Sand: fine to coarse-grained ______________ Sand: coarse-grained (up to gravel size) Sand: fine to coarse-grained _ Limestone _ ____________________ ---- -

Samples of poor quality.

Remarks:

508

50!t

22

530

423

953

237 1,190

24

66

100

220

40

450

373

823

Location: St. Marys Owner: No. 4 St. Marys Kraft Corporation Driller: Layne-Atlantic Company Drilled: October 1953

CAMDEN COUNTY
Well No.: GGS 365 Elev.: 141

Thickness Depth-

(feet)

(feet)

No samples

65

65

In Pliocene to Recent (Undifferentiated):

Limestone: dark-brownish-gray, saccharoidal, massive, sandy,

sparsely phosphatic, fossiliferous (molds and impressions

of megafossils)

__ ____ _

27

92

Sand: fine-grained, subangular to subrounded; some lime-

stone, as above _____ ___ _____________________ _ _____ ____

__________ ________ 20

112

Dolomitic limestone: white, saccharoidal, sandy, coarse-sub-

rounded grains of sand and some coarse-grained, jet-black

phosphatic grains; fragments of clay, dark-green, sandy________ 11

128

1Average elevation taken from State Highway map.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

67

Miocene (Undifferentiated):

Thickness (feet)

Lithology as above but with more clay, dark-green, sandy

31

Clay: dark-green, sandy

182

Clay: as above; dolomitic limestone, brown, saccharoidal,

sandy, phosphatic

122

Lithology as above; fragments of indurated sand, fine to

medium-grained, subrounded, fossiliferous (a coquina);

fragments of limestone, white, sandy, phosphatic, fossili-

ferous (macroshells and bryozoan remains)

51

Depth (feet)
154 336 458
509

Oligocene (Undifferentiated):

Limestone: light-gray to cream at depth, nodular, somewhat

saccharoidal, fossiliferous (molds, impressions, and frag-

ments of megafossils, bryozoan remains, and some Fora-

minifera)

.................... .

10

519

Asterigerina sp., Siphonina advena, Discorbis subaraucana, Cibicides locatulus, Cibicides missis.sippiensis at 509-515.

No samples

36

555

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone as above; interbedded dolomitic limestone, brown,

saccharoidal

331

886

Gypsina globula at 555-582.

No samples

30

916

In Middle Eocene: Claiborne Group (Undifferentiated):

Limestone as above; interbedded dolomitic limestone, dark-

brown, saccharoidal

.................. ..... .............. . .. .... .. . . .......... 304

Dictyoconus sp. and abundant Miliolidae at 916-966.

1,220

Summary:

No samples ...... ........ .................. ....................



65

In Pliocene to Recent (undifferentiated) ....................................... 58

Miocene (undifferentiated)

..................... .

386

Oligocene (undifferentiated)

10

No samples

.................. .

36

In upper Eocene (Ocala limestone)

331

No samples .......................................................

30

In middle Eocene (Claiborne group, undifferentiated)

304

65 123 509 519 555 88G 916 1,220

68 Limestone ____

GEORGIA GEOLOGICAL SURVEY BULLETIN 70 Potential Water-Bearing Zones:

Thickness Depth

(feet)

(feet)

316

825

Location: 0.75 to 1 mi. east of Tarboro on Whiteoak Road Owner: No. 1 Tarboro Elementary School Driller: Woodrow Sapp Drilled: October 1955

CAMDEN COUNTY
Well No.: GGS 455 Elev.: 141

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, finely disseminated phosphatic grains;

interbedded clay, dark-gray, silty, Jignitic, micaceous

55

55

Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic; interbedded sand, fine

to coarse-grained phosphatic

145

200

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic; some sand as above __

40

240

Clay: dark-green, sandy, phosphatic; interbedded dolomitic

limestone as above

50

290

Clay: as above but sandier and somewhat indurated; inter-

bedded limestone, white, dense (much calcitized), sandy,

phosphatic, fossiliferous (macroshells) ___ _____ __ _

20

310

Dolomitic limestone: brown, saccharoidal, sandy, phosphatic

10

320

Limestone: white, dense (much calcitized), very sandy, phos-

phatic, fossiliferous (molds, impressions, and fragments of

macroshells) ; interbedded sand, fine to coarse-grained,

phosphatic __ _ _ _______ ----------------------------------------- --------------------- 110

430

Summary:

Pliocene to Recent (undifferentiated) ________________ ----------------------------- 55

55

Miocene (undifferentiated) _______ ------- ______________________ ----------------------

375

430

'Average elevation taken from State Highway map.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

69

Potential Water-Bearing Zones:
Sand: fine to very coarse-grained Sand: fine to coarse-grained Limestone and sand

Thickness Depth

(feet)

(feet)

10

200

10

340

90

430

Location: Near Metter Owner: No. 1 Carl Daughtry Driller: Layne-Atlantic Company Drilled: 1955

CANDLER COUNTY
Well No.: GGS 429 Elev.: 225

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Sand: fine to coarse-grained, arkosic; some clay, bluish-gray

to tan to red (mottled), sandy, limonitic

35

35

Clay: yellowish-green, sandy; interbedded sand, fine to

coarse-grained, arkosic ___ _

60

95

Clay: dark-green to gray, sandy, phosphatic; interbedded

sand, fine to coarse-grained, phosphatic _____________________________

100

195

Light-brown to g-ray, phosphatic pebbles prominent at 95-105.

Clay: dark-green, sandy, phosphatic; interbedded limestone,

gray, dense, sandy, fossiliferous (macroshells)

35

230

Indurated sand: gray, phosphatic, fossiliferous (a coquina) __

10

240

Dolomitic limestone: light-brown, sandy, phosphatic __________________ 10

250

Sand: fine to coarse-grained, phosphatic

20

270

Clay: gray, sandy, phosphatic ____

20

290

Limestone: dark-gray, extremely dense (much calcitized),

very sandy, phosphatic, fossiliferous (megafossils) ________________ 30

320

No samples __ _

10

330

In Oligocene (Undifferentiated):

Limestone: light-gray, dense, massive, crystalline, fossili-

ferous (some macroshells, echinoid and bryozoan remains,

and Foraminifera) _

---------------------------------------------- 40

370

70

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickne-ss (feet)
Rotalia mexicana var., Camerina sp., Quinqueloculina sp. at 330-340.

Limestone: cream, rather soft and chalky, fossiliferous (as

above) _ _ __ ____

________________________ _____________

________________ 65

Depth (feet)
435

No samples

20

455

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, soft, chalky, somewhat granular, fossili-

ferous (some echinoid and bryozoan remains, and Fora-

minifera) __

__________________________ -------------------------------- ______ 122

577

Robulus arcuato-striatus var., Eponides jacksonensis, Nonion planatus, Siphonina jacksonensis, Gypsina globula, Lepidocyclina sp. at 455-475.

Summary:
Miocene (undifferentiated) ____ _ No samples ----------------------------------------------- _ In Oligocene (undifferentiated) _____ __ No samples _____ ---------------------------------------------In upper Eocene (Ocala limestone)

320

320

10

330

105

435

20

455

122

577

Potential Water-Bearing Zones:

Sand: fine to coarse-grained

Limestone

__________________ _

20

270

207

577

Remarks:
Top of Ocala limestone may be in "soft limestone" at 370-435. However, no fossils of upper Eocene age were recovElred at this depth.

Location: Approximately 4 mi. northeast of Metter Owner: No. 1 J. 0. Rocker Driller: Turner Well Drilling Company Drilled: May 1959

CANDLER COUNTY
Well No.: GGS 574 Elev.: 260

Miocene (Undifferentiated):

Clay: pale-greenish-gray with red to purple streaks (mot-

tled), sandy, limonitic _________________________________________ _

43

43

Sand : fine to coarse-grained, subangular, arkosic __

21

64

WELL LOGS m' THE COASTAL PLAIN OF GEORGIA

71

ThicknE'Ss (feet)

Clay: pale-yellowish-green to brownish-gray, blocky, sandy __

80

Clay: as above but much sandier

61

Clay: dark-greenish-gray, somewhat indurated, tough, sandy,

phosphatic, fossiliferous at depth; interbedded limestone,

white, rather dense, sandy

_________ _

120

Macroshells and phosphatic pebbles prominent at 246-265.

Indurated sand, changing at depth to a sandy limestone:

light-gray, fine-grained, dense, phosphatic, fossiliferous

(a coquina with macroshells and Foraminifera)

20

Archaias sp. at 328-349.

Depth (feet)
144 205
325
345

Oligocene (Undifferentiated):

Limestone: cream, massive, nodular, fossiliferous (chiefly

Gastropods, bryozoan remains and some Foraminifera)

85

430

Asterigerina sp., Rotalia mexicana var. at 349-369. Lepidocyclina1 sp., Gypsina globula\ Operculinoides1 sp. at 369-388.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, softer than above, somewhat granular

and loosely consolidated, much calcitized, fossiliferous

(some macroshells, bryozoan remains and Foraminifera)_

41

471

Robulus limbosus var., Robulus arcuato-striatus, Eponides jacksonensis, Siphonina jacksonensis, Nonion planatus, Gypsina globula (common) at 451-471.

Summary:
Miocene (undifferentiated) Oligocene (undifferentiated) Upper Eocene (Ocala limestone)

345

345

85

430

41

471

Limestone

Potential Water-Bearing Zones:

126

471

-'Reworked ( ?) fossil of middle Eocene age.

72

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

CANDLER COUNTY

Location: Approximately 9 mi. northwest of Metter Owner: No. 1 J. A. Durdon Operator: Turner Well Drilling Company Drilled: August 1959

Well No.: GGS 581 Elev.: 275

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: yellowish-green to purple (mottled), very sandy, limo-

nitic; sand, coarse-grained, subrounded, arkosic _______

22

22

Sand: coarse-grained, subrounded, arkosic

20

42

Clay: pale-yellowish-green to greenish-gray but dark olive-

green at depth, blocky, sandy _________________________________________ _

101

143

Sand: coarse-grained, subrounded, arkosic

20

163

Sand: fine-grained, subrounded; interbedded clay, yellowish-

green, rather tough, sandy ______________ _

21

184

Clay: greenish-gray to pale-yellowish-green at depth, sandy;

interbedded limestone, cream, sandy, rather dense, fossili-

ferous at depth (macroshells) ; sand, fine-grained, sub-

rounded, light-gray, rounded phosphatic pebbles

82

266

Limestone: as above; interbedded siltstone, light-brown to

brownish-gray, very dense, highly siliceous; indurated sand,

fine to medium-grained, subrounded, rather dense, crystal-

line, fossiliferous (some macroshells)

30

296

In Oligocene (Undifferentiated):

Limestone: cream, much leached, rather soft, loosely cemented,

cherty at depth, fossiliferous (echinoid and bryozoan re-

mains, some Ostracods and Foraminifera)

93

389

Rotalia mexicana var. at 296-307.
Quinqueloculina sp., N onionella oligocenica, Reussella oligocenica, Discorbis cf. D. tentoria, Nonion advena, Rotalia mexicana var., Cibicides lobatulus, Cibicides americanus var. at 307-327.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

73

Upper Eocene: Jackson Group: Ocala Limestone:

Thickness (feet)

Limestone: cream, granular (in texture) , rather loosely con-

solidated\ fossiliferous (abundant bryozoan remains2 and

rare Foraminifera)

___________________________________________ _

21

Operculinoides sp. (rare) at 389-410.

Limestone: cream, firmly consolidated (as compared to limestone above), fossiliferous (abundant bryozoan remains) __________ 20

Depth (feet)
410
430

Summary:

Miocene (undifferentiated) _________ ---------------------------------- _______________ __ _ 296

296

In Oligocene (undifferentiated) ------------------------ ________________

93

389

Upper Eocene (Ocala limestone) ________________ _______________

41

430

Potential Water-Bearing Zones:
Sand : coarse-grained Limestone: cream, rather porous

20

163

20

430

Location: Northeast of Metter, approximately 1 mi. east of Highway 23
Owner: No. 1 Josh Durdon Operator: Turner Well Drilling Company Drilled: August 1959

CANDLER COUNTY
Well No.: GGS 582 Elev.: 310

Thickness Depth

(feet)

(feet)

No samples

22

22

In Miocene (Undifferentiated):

Clay: yellowish to olive-green to greenish-gray, somewhat

blocky, sandy, cherty and phosphatic at depth; interbedded

sand, fine to coarse-grained, subangular, arkosic, phosphatic

at depth _________________ ---------------------------------------------------------------

346

368

Black, polished phosphatic pebbles prominent at 245-266.

Marl: dark-gray, silty, micaceous, fossiliferous (macroshells) __ _ 21

389

'Representative of inner lagoon (post barrier reef) deposits. :r:consisting of approximately 98 percent bryozoan remains.

74

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: light-gray to cream, nodular, rather massive, some-

what sandy, fossiliferous (macroshells, some bryozoan re-

mains, and Foraminifera) ________________ ------------------------------- ___

41

Pyrgo sp., Eponides sp., Asterigerina subact~ta at 389-403.

Casts and molds of megafossils, particularly of Gastropods prominent at 403-410.

Depth (feet)
430

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, soft, granular, fossiliferous (bryozoan re-

mains and abundant "larger Foraminifera")

20

450

Gypsina globula, Reussella eocena, Eponides jacksonensis, Lepidocyclina sp. abundant at 430-450.

Summary:
No samples ____ ___________ In Miocene (undifferentiated) ___ Oligocene (undifferentiated) ___ Upper Eocene (Ocala limestone)

-------------

22

22

367

389

41

430

20

450

Potential Water-Bearing Zones: Limestone ______________________ ------------------------------------------------------

61

450

Location: 21 mi. west of Folkston on Jones Island, Okefenokee Swamp
Owner: No. 1 U. S. Biological Survey Driller: Virginia Supply and Well Company Drilled: November 1939

CHARLTON COUNTY
Well No.: GGS 93 Elev.: 120

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, finely disseminated phosphatic grains;

interbedded clay, dark-gray, sandy, lignitic, micaceous ____ _

30

30

Limestone: dark-gray, somewhat argillaceous ____

9

39

Clay: light-gray, very sandy, phosphatic

l1

50

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

75

Thickness (feet)

Limestone: light-gray, dense (much calcitized), very sandy,

fossiliferous (casts and impressions of megafossils) _____

10

Sand: fine-grained, somewhat argillaceous, sparsely phosphatic 22

Depth (feet)
60 82

Miocene (Undifferentiated):

Clay: dark-green, blocky, sandy, phosphatic; interbedded sand,

fine to coarse-grained, phosphatic; dolomitic limestone,

light-brown, sandy, phosphatic ___________________

188

270

Dolomitic limestone prominent at 139-155 and 220-228. Sand prominent at 263-270.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated)

82

82

188

270

Potential Water-Bearing Zones: Sand: fine to coarse-grained

7

270

Location: 1.25 mi. southwest of Atlantic Coast Line R.R. depot in Folkston
Owner: No. 1 State Prison Camp (Folkston) Driller: Gray Well and Pump Corporation Drilled: January 1941

CHARLTON COUNTY
Well No.: GGS 185 Elev.: 75

Thickness Depth

(feet)

(feet)

No samples _

90

90

In Pliocene to Recent (Undifferentiated):

Limestone: gray, dense (highly calcitized), saccharoidal,

sandy, sparsely but finely phosphatic, fossiliferous (molds

and impressions of megafossils) _____________

10

100

Miocene (Undifferentiated):

Sand: fine to coarse-grained, abundantly phosphatic; clay,

dark-green, somewhat indurated, fossiliferous (some Fora-

minifera)

___________________ ------------------- ------------------ -------------------- 25

125

Rotalia beccarii var. at 118.

76

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Clay: dark-green, partially indurated, fossiliferous (macro-

shells, Ostracods, and Foraminifera) ___________________

110

Sand: fine to coarse-grained, abundantly phosphatic ______________ 23

Clay: dark-green, silty, cherty _________________________________

28

Dolomitic limestone: light-brown, dense (highly calcitized),

sandy, coarsely phosphatic ____________________________________________ _

21

Sand: fine to coarse-grained, abundantly phosphatic

90

Clay: green, sandy, phosphatic, sandier at depth__

48

Limestone; white, sandy at 435-445.

No samples _____

72

Depth (feet)
235 258 286
307 397 455
517

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream to light-gray, dense (much calcitized), fos-

siliferous (fragments of bryozoan remains, macroshells, Os-

tracods, and Foraminifera) ____________________________________________________ _

37

554

Operculinoides cf. 0. floridensis at 517-526.

Summary:

No samples _________

---------------

90

90

In Pliocene to Recent (undifferentiated ________________

10

100

Miocene (undifferentiated) _-------------------------------------------

345

445

No sampies _______________________ ------------------------------------------------------------------------ 72

517

In upper Eocene (Ocala limestone) ______________________________ ------------------ 37

554

Potential Water-Bearing Zones:
Sand: fine to coarse-grained, phosphatic _______ _ Limestone

90

397

34

554

CHARLTON COUNTY

Location: In Folkston

Well No.: GGS 453

Owner: No. 1 Folkston Elementary and High School Elev.: 801

Driller: M. M. Gray

Drilled: 1955

Thickness
(feet)
-------------------------------------------------

Depth (feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained to coarser-grained at depth, finely dissemi-

nated phosphatic grains and inclusions of kaolin; inter-

bedded clay, dark-gray, silty, carbonaceous, micaceous _________

60

60-

1Average elevation taken from State Highway map.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

77

Thickness (feet)

Limestone: light-gray to brown, dense, saccharoidal, sandy;

interbedded clay, dark-green, somewhat indurated, fossilifer-

ous (some Ostracods and Foraminifera)____

___ __ _______ 60

Depth (feet)
120

Rotalia beccarii var. at 60-70.

Miocene (Undifferentiated): Clay: light-gray to pale-green, sandy, sparsely phosphatic

40

160

Sand: fine to coarse-grained; dolomitic limestone, light-brown,

saccharoidal (much calcitized), sandy, coarsely phosphatic______ 150

310

Clay: dark-green, sandy ________________________________________________

30

340

Dolomitic limestone: light-brown, saccharoidal, sandy, coarse-

ly phosphatic, cherty ______________________ -------------------------------------

40

380

Sand: fine to coarse-grained ___________ _

15

395

Clay: dark-green, silty; siltstone, light-brown, indurated,

sandy, phosphatic ___ _______________________ -------------------------------------- 25

420

Dolomitic limestone: light-brown, saccharoidal, very sandy,

coarsely phosphatic ______________________ ________ ____ _____

______________ 50

470

Clay: dark-green, sandy, cherty _ Sand: fine to coarse-grained, phosphatic _

30

500

20

520

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, dense (much calcitized), sandy (at top of

section), fossiliferous (bryozoan remains, Ostracods, and

Foraminifera) --------------------------------------------- ____________________________

130

650

Operculinoides sp. at 520-530.

Summary:
Pliocene to Recent (undifferentiated) __ Miocene (undifferentiated) _______________________________________ Upper Eocene (Ocala limestone) _________________________

120

120

400

520

130

650

Potential Water-Bearing Zones:
Sand: fine to coarse-grained Limestone -----------------------------------------

20

520

130

650

78

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

CHATHAM COUNTY

Location: Tybee Island, about 0.25 mi. N. 70 E. of lig-hthouse at Fort Screven
Owner: U.S. Government (War Department) Driller: Layne-Atlantic Company Drilled: September 1942

Well No.: GGS 1 Elev.: 14

Thickness (feet)
----------------

Depth (feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, subangular, cherty, somewhat micaceous __

32

32

Sand: fine to coarse-grained, subangular, sparsely phosphatic,

fossiliferous (a few fragments of molluscan shells) ______

58

90

Sand: coarse-grained, subangular to subrounded, abundantly

phosphatic, fossiliferous (molluscan shells)

13

103

Miocene (Undifferentiated):

Clay: pale-brownish-gray, blocky, sandy, phosphatic

55

158

Limestone: white, very sandy, phosphatic, fossiliferous (molds

of molluscan shells) ________ _

22

180

Oligocene (Undifferentiated):

Limestone: light gray, sandy, somewhat nodular, sparsely

phosphatic, fossiliferous (molds of molluscan shells and

Foraminifera) ______________________________________________________

40

220

Quinqueloculina sp., Lepidocyclina sp., Gypsina globula at 180-220.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, crystalline (in texture), much calcitized

and fossiliferous (abundant bryozoan remains and Foramini-

fera)

_ ____________

__ _ ___ 195

415

Operculinoides floridensis, Asterocyclina nassauensis, Robulus alato-limbatus, Planularia sp., Saracenaria sp., Siphonina jacksonensis at 220-250.
Eponides cocoaensis, Asterocyclina nassauensis, Operculinoides flMidensis, Planulina cocoaensis, Pseudophragmina /lintensis, Gypsina vesicularis, Nodosaria latejugata var., Nonion cf. N. planatus at 250-380.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

79

Thickne,ss (feet)

Limestone: cream, granular (in texture), much calcitized, fos-

siliferous (Foraminifera) _

_______________________________ _

195

Camerina st1iatoreticulata at 430-460. Operculina 1nariannensis at 490-520. Glauconite-impregnated Foraminifera prominent at 580610. Lepidocyclina (Polylepidina) antillea? at 580-610.

Depth (feet)
610

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) __________________ _____ ____________________ Oligocene (undifferentiated) Upper Eocene (Ocala limestone)

103

103

77

180

40

220

390

610

Location: 2.4 mi. east of City Hall, Savannah Owner: No. 1 Southeastern Shipyards Driller: Layne-Atlantic Company Drilled: June 1941

CHATHAM COUNTY
Well No.: GGS 35 Elev.: 9

Thickness Depth

(feet)

(feet)

No samples

20

20

In Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, angular, arkosic; clay, dark-

gray, silty, lignitic, micaceous____________________________________________ _

10

10

Sand: fine to medium-grained, angular, arkosic _

30

60

Sand: as above, but coarse-grained, subrounded ____________________________ 12

72

Miocene (Undifferentiated): Clay: dark-green, sandy, phosphatic (at depth)

133

205

No samples

3

208

Limestone: light-gray, dense, sandy, phosphatic; dolomitic

limestone, light-brown, saccharoidal, sandy, phosphatic__________ _ ?

208

No samples

20

228

80

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

In Oligocene (Undifferentiated):

Thickness Depth

(feet)

(feet)

Limestone: light-gray, dense (much calcitized), nodular, fos-

siliferous (some echinoid and bryozoan remains and Fora-

siliferous (bryozoan remains and Foraminifera)

'?

300

Quinqueloculina sp., Elphidium sp. at 228. Textularia sp., Nonionella hantkeni var. at 248.

No samples ------------------------------ _

52

300

Limestone: cream, crystalline (much calcitized), nodular, fos-

siliferous (bryozoan remains and frequent Foraminifera) __

300

Quinqueloculina sp., Discorbis? sp., Rotalia sp. at 300.

No samples __________________________________

20

320

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream to light-gray, massive, saccharoidal (highly

calcitized), nodular, fossiliferous (abundant bryozoan re-

mains, echinoid spines, and some Foraminifera) __

35

355

Operculinoides sp. at 320. Robulus alato-limbatus at 355.

No samples

17

372

Limestone: white, crystalline (in texture), much calcitized,

fossiliferous (abundant bryozoan remains and some Fora-

minifera) _______________________________________________

30

402

Asterocyclina nassauensis at 372.

No samples

123

525

Limestone: cream, granular, sparsely glauconitic, fossiliferous

("larger Foraminifera") ________________ ---------------------------------------- 121

646

Camerina striatoreticulata common at 525.

Summary:

No samples ___ ____________ ----------------------------------------------------------

20

20

In Pliocene to Recent (undifferentiated) --------------------------------

52

72

Miocene (undifferentiated) _________________________________ -------------------------------- 156

228

No samples _____________________ _______________ ____________ _______ _________________ _______________ 12

240

In Oligocene (undifferentiated) ------------------------------------------------------------ 60

300

No samples ----------------------------------------------------------- ----------------------------- 20

320

In upper Eocene (Ocala limestone) ___________________ ___ _____________________________ 326

646

Limestone

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

81

Potential Water-Bearing Zones:

Thickness Depth

(feet)

(feet)

406

646

Remarks: Sample intervals too large to permit satisfactory picking of formational tops.

CHATHAM COUNTY

Location: 2 mi. east of City Hall, near south bank of Savannah River, in Savannah
Owner: No. 1 Standard Oil Company Driller: Layne-Atlantic Company Drilled: August 1940

Well No.: GGS 61 Elev.: 6

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, angular, arkosic, finely dissemi-

nated phosphatic grains; interbedded clay, dark-gray, silty,

lignitic, micaceous, fossiliferous (macroshells at certain

levels) ------------------------------------------ ------------------------------------- ______________ 60

60

Sand: coarse-grained, arkosic, somewhat phosphatic _

10

70

Miocene (Undifferentiated):

Clay: dark-green, somewhat granular (in texture), sandy,

phosphatic (at depth)

___________________ _

30

100

Reddish-brown phosphatic fragments prominent at 100.

Clay: as above; interbedded dolomitic limestone, light-brown,

saccharoidal, sandy, phosphatic; limestone, light-gray to

white, dense, saccharoidal, very sandy, phosphatic, fossil-

iferous at depth (casts and impressions of megafossils)

145

245

Dolomitic limestone prominent at 140.

No samples

32

277

In Oligocene (Undifferentiated): Limestone: cream, nodular (much calcitized), cherty, fossil-

82

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

iferous (casts and molds of Gastropods, some echinoid and

bryozoan remains, and Foraminifera)_

_____________ _

?

Quinqueloculina sp., Pyrgo sp. at 277.

Depth (feet)
277

No samples

13

290

Limestone: light-gray, massive, crystalline (recrystallized),

fossiliferous (some bryozoan remains, Ostracods, and Fora-

minifera) ____ _________

________________________ ___________ _________________

20

310

No samples

15

325

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, somewhat calcitized, crystalline, fossilifer-

ous (abundant bryozoan remains and some Foraminifera) ______ ?

325

Operculinoides floridensis, Asterocyclina nassauensis, Argyrotheca sp. at 325.

Limestone: as above

75

400

No samples _

20

420

Limestone: cream, highly calcitized, granular, fossiliferous

("larger Foraminifera" at certain levels)___ ___________________

230

650

Camerina striatoreticulata at 480. OpercuUna mariannensis at 580.

Summary:

Pliocene to Recent (undifferentiated) __

70

70

Miocene (undifferentiated)

175

245

No samples

____________________________________________ _

32

277

In Oligocene (undifferentiated) ________________________________ _

33

310

No samples ___

___________ ____ __________

_ ___ -------------

15

325

In upper Eocene (Ocala limestone) __

325

650

Limestone __

Potential Water-Bearing Zones:

373

650

Remarks:
Well plagued with sample gaps, hence impossible to place formational tops with accuracy.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

83

Location: West side of Atlantic Coast Line R.R., east side of Travis Air Force Base, Port Wentworth owner: No. 1 Cherokee Hill Drilled: 1920

CHATHAM COUNTY
Well No.: GGS 62 Elev.: 22

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained; inclusions of kaolin, white, sandy, mica-

ceous _______________

42

42

Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic, gypsiferous at certain

levels __ ____ ___ _______________________________________ ------------------------------- _____

118

160

Brown to black, polished, phosphatic pebbles abundant at 120-130.

Dolomitic limestone: light-brown, saccharoidal, sandy; some

clay, dark-green, sandy, phosphatic__

40

200

Clay, as above __

21

221

No samples ____ _

59

280

In Oligocene (Undifferentiated):

Limestone: light-gray, rather dense, nodular (calcitized) ,

somewhat sandy, fossiliferous (echinoid and bryozoan re-

mains, and some Foraminifera) ____________________

30

310

Discocyclina1 sp., Dictyoconus1 sp., Textularia sp., Nonionella hantkeni var., Discorbis cf. D. tentoria, Cibicides lobatulus, Nonion advena, Reussella oligocenica at 280-290.

Rotalia mexicana var. at 300-310.

Limestone: cream, massive, saccharoidal at depth, fossilifer-

ous (fragments, casts and molds of Gastropods, echinoid and

bryozoan remains, and Foraminifera)_. _______________________________ 50

360

Gypsina globula\ Asterocyclina1 sp., Pyrgo sp., Rotalia mexicana var., Cibicides lobatulus at 310-320.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, dense, massive (much calcitized), fos-

siliferous (macroshells, abundant bryozoan remains, and

some Foraminifera) _________ -------------------------------------------------------------- 30

390

Asterocyclina sp., Operculinoides sp., Gypsina globula at
- 370-380.
'Reworked ( ? ) fossil of middle Eocene age.

84

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Limestone: white, crystalline (much calcitized), massive, fossiliferous (macroshells, abundant bryozoan remains, and Foraminifera) ______________________________________________ ----------------------------------- 50
Asterocyclina nassauensis at 390-400.

Depth (feet)
440

Limestone: light-gray, saccharoidal, crystalline (highly calci-

tized), coarsely glauconitic, fossiliferous (abundant echinoid

and bryozoan remains, and some Foraminifera)_________________________ 55

495

No samples --------------------------------------- __________________________

5

500

Limestone: cream, granular, sandy at depth, fossiliferous

(abundant echinoid and bryozoan remains and abundant

"larger Foraminifera") _______ __________________________ ---------------------------- 170

670

Camerina cf. C. striatoreticulata at 525.

No samples _____

40

710

In Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: light-gray, massive, somewhat saccharoidal,

coarsely glauconitic, somewhat fossiliferous (echinoid and

bryozoan remains, and some Foraminifera)__

______________ 40

Asterocyclina monticellensis at 730.

No samples ______________________________________ ------------------------------------------------------ 30

Limestone: white, massive (much calcitized), cherty, fossiliferous (macroshells, bryozoan remains, and some Foraminifera) --------------------------------------------- ------------------------------------------------------ 80
Operculinoides sp. at 780.

No samples ______________________ ---------------------------------- ------------------------------------ 30

Limestone: cream, granular, cherty___ ------------------------------------------------ 60

Brown chert abundant at 890.

No samples ___________

60

In Tallahatta Formation: Limestone: as above, but coarsely glauconitic and fossiliferous (abundant Foraminifera) ------------------------------------------------------------ 260 Cibicides blanpiedi, Cibicides tallahattensis at 1010.
No samples ___________ --------------------------------------------------------------------------------- 90

750 780 860 890 950 1,010
1,270 1,360

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

85

In Lower Eocene and Paleocene (Undifferentiated):

Thickness (feet)

Sand: fine to medium-grained, abundantly glauconitic _______________ ?

Depth (feet)
1,360

No samples ____ --------------------------------------- ------------------------------------------------ 30

Marl: light-gray, somewhat indurated, glauconitic, fossiliferous (Ostracods and abundant Foraminifera)------------------------------ 20

Spiroplectammina wilcoxensis, Vaginula longiforma, Bolivina midwayensis, Bulimina quadrata, Siphonina wilcoxensis, Siphonina prima, Gyroidina aequilateralis, Chilostomelloides eocenica, Discorbis cf. D. midwayensis, Anomalina sp. at 1390.

No samples ____________________________

20

Limestone: dark-gray, crystalline, very dense, somewhat argil-

laceous, coarsely glauconitic ______________________________________________

?

No samples_

110

1,390 1,410
1,430 1,430 1,540

Marl: light-gray to dark-brown at depth, somewhat indurated,
glauconitic, pyritiferous, fossiliferous (Ostracods and Foraminifera) ___________________ ___ __________________________ ____________ ___________________________ 50

1,590

Polymorphina cushmani at 1590.

No samples ___________

20 1,610

In Upper Cretaceous (Undifferentiated):
Marl: dark-bluish-gray, silty, pyritiferous, micaceous; interbedded sand, fine to medium-grained, micaceous, pyritiferous, fossiliferous (Ostracods and Foraminifera)________________________ 520
Dorothia bulletta, Bulimina pupoides, Anomalina sp. at 1650. Clavulinoides trilatera at 1690. Gaudryina rudita, Loxostoma plaitum, Bulimina pupoides, Globotruncana area, Cibicides harperi at 1710. Gaudryina rudita, Anomalina henbesti at 2070.

2,130

Summary:

Pliocene to Recent (undifferentiated)

42

42

Miocene (undifferentiated) ______

179

221

No samples ___ ________________

__ _ ------

59

280

In Oligocene (undifferentiated)_

_________________________________________ 80

360

Upper Eocene (Ocala limestone) ________________

310

670

No samples -------------------------------------------------------------------------- ----In middle Eocene (Lisbon formation) ___________________________ _

40

710

240

950

86

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

No samples

_________________________________________ _

In middle Eocene (Tallahatta formation) ____________________

No samples __ _______ ___________ ________ ____________ ---------------

In lower Eocene and Paleocene (undifferentiated)_

No samples

_______________________________________________ _

In Upper Cretaceous (undifferentiated) ____________ _

Thickness (feet)
60 260
90 230
20 520

Depth (feet)
1,010 1,270 1,360 1,590 1,610 2,130

Limestone

Potential Water-Bearing Zones:

730 1,010

Location: Abercorn and 59th Street, Savannah Owner: City of Savannah Driller: Layne-Atlantic Company Drilled: May 1941

CHATHAM COUNTY
Well No.: GGS 80 Elev.: 18

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained to coarser-grained at depth; interbedded

clay, dark-gray to black, somewhat fissile, silty, lignitic, mi-

caceous, fossiliferous (macroshells) ____________________________________ 60

60

Clay: gray to dark-green, sandy, somewhat phosphatic__

20

80

Sand: coarse-grained, rounded, arkosic; some clay, as above _

2

82

Sand: as above; fragments of dolomitic limestone, light-brown,

saccharoidal, sandy, phosphatic _

___________ _

2

84

No samples _____ _

31

115

In Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic

115

230

Dolomitic limestone: light-brown, saccharoidal, sandy, fossil-

iferous (casts and impressions of megafossils); interbedded

limestone, light-gray, dense (much calcitized), somewhat

nodular, sandy, phosphatic__

____________ ______________________ 20

250

No samples _

20

270

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

87

In Oligocene (Undifferentiated):

Thickness (feet)

Limestone: cream, rather massive (much calcitized), fossil-
iferous (megafossils and some Foraminifera) ; some limestone, as above____________________________________________________________________________________ 60

Rotalia mexicana var., Nonionella hantkeni var., Gypsina globnla1 at 270.
Dictyoconns1 sp. at 300.

No samples ______________________________

17

Depth (feet)
330
347

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray to white, dense (much calcitized),

crystalline, fossiliferous (megafossils, echinoid and bryozoan

remains, and Foraminifera)_-- ___ -------------------------------- _

159

506

Opercnlinoides floridensis, Asterocyclina sp. at 386.

No samples_

59

565

Limestone: cream, granular, fossiliferous (Foraminifera) __

95

660

Asterocyclina nassanensis, Psendophragmina flintensis at 565. Camerina striatoreticnlata, Opercnlina mariannensis at 640.

Limestone: as above, but coarsely glauconitic__

40

700

Summary:

Pliocene to Recent (undifferentiated) _________ ---------------

84

84

No samples ---------------------------------- -----------------------------------

31

115

In Miocene (undifferentiated)_ _____ _________________________________________________ 135

250

No samples ________________________________

20

270

In Oligocene (undifferentiated)---------------- _______________________

60

330

No samples _

--------------------------- ___________________

-----------

17

347

In upper Eocene (Ocala limestone) ________________ _

353

700

Limestone _

Potential Water-Bearing Zones:

430

700

-'Reworked ( 7) fossil of middle Eocene age.

88

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: On White Bluff Road, 700 ft. west and 0.3 mi. north of Buckhalter Road, Savannah
Owner: No.1 J. M. Breckenridge Driller: Layne-Atlantic Company Drilled: January 1940

CHATHAM COUNTY
Well No.: GGS 125 Elev.: 21

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, arkosic, finely disseminated

phosphatic grains; interbedded clay, dark-gray, silty, lig-

nitic, micaceous ____ ----------------------------------------------------------------------------- 60

60

No samples -------------------------------------------------- _________________________________________ 20

80

Sand: coarse-grained, arkosic, subrounded__ --------------------------------

80

No samples _______________________

20

100

In Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic___

120

220

Brown to black, phosphatic pebbles abundant at 220.

No samples ________________

20

240

Clay: as above; some dolomitic limestone, light-brown, saccha-

roidal, sandy__________ _______ ---------------------------------------------- _________________ 13

253

No samples ______________________

22

275

In Oligocene (Undifferentiated):

Limestone: light-gray, dense, sandy, nodular, fossiliferous

(echinoid and bryozoan remains and Foraminifera) ____

70

345

Pyrgo sp. at 270. Rotalia mexicana var., Quinqueloculina sp. at 295. Operculinoides sp., Nonionella hantkeni var. at 320.
No samples ________________________

30

375

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray to white at depth, much calcitized, crys-

talline, fossiliferous (abundant bryozoan remains, Ostra-

cods, and some Foraminifera)__________________________ __________ ________ 145

520

Operculinoides floridensis at 375.
Pseudophragmina flintensis, Gypsina globula, Asterocyclina sp. at 400.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

89

No samples ----------------------------------------------------------------------------------

Thickness (feet)
20

Limestone: cream, granular (highly calcitized), sparsely glau-

conitic, fossiliferous (abundant bryozoan remains and "larg-

er Foraminifera," many of which are impregnated with

glauconite)

___ _______ __ ___ ----------------------------

___ ________________ 60

Operculina mariannensis, Camerina striatoreticulata at 540.

Summary:

Pliocene to Recent (undifferentiated) ________________

80

No samples ---------------------------

______________ _

20

In Miocene (undifferentiated)

___________________________ _

153

No samples -------------------------------- _

22

In Oligocene (undifferentiated)

_____________________________________ _

70

No samples _______________

_________________ _

30

In upper Eocene (Ocala limestone) ________________

225

Depth (feet)
540
600
80 100 253 275 345 375 600

Limestone

Potential Water-Bearing Zones:

325

600

Remarks: Sample intervals too large to permit picking of satisfactory formational tops.

Location: South bank of Savannah River, in Savannah Owner: No. 1 American Cyanamid Company Driller: M. M. Gray Drilling Company Drilled: May 1954

CHATHAM COUNTY
Well No.: GGS 377 Elev.: 15

Pliocene to Recent (Undifferentiated):

Clay: light to dark-gray, silty, lignitic, finely disseminated

phosphatic grains ___________ ----------------------------------- _________________

40

40

Sand: fine to coarse-grained, arkosic, subangular_

10

50

Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic__

84

134

Clay: as above; interbedded dolomitic limestone, light-brown,

saccharoidal, sandy, phosphatic _____________________ _______________ ____________ __ 32

166

Reddish-brown phosphatic pellets abundant at 134-140.

90

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Limestone: light-gray, rather dense, sandy, phosphatic, fossil-

iferous (casts and molds of megafossils) ___

14

Depth (feet)
180

Oligocene (Undifferentiated):

Limestone: light-gray, chalky, soft, fossiliferous (echinoid

and bryozoan remains, Ostracods, and Foraminifera) _____ --- 55

235

Rotalia mexicana var. at 176-184.
Nonionella hantkeni var., Robulus sp., Textularia sp., Gypsina globula1 at 195-205.

Limestone: cream, granular (in texture), much calcitized, fos-

siliferous (Gastropods, some echinoid and bryozoan remains,

and Foraminifera)

___________ __ __ ____ ________

______________ 42

277

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray to white, coarsely glauconitic at depth,

extremely dense (highly calcitized), fossiliferous (abundant

echinoid and bryozoan remains, some Ostracods and Fora-

minifera)

158

435

Operculinoides cf. 0. floridensis at 275-285.
Robulus cultratus, Lingulina sp., Planularia sp., Nodosaria latejugata var. carolinensis at 285-295.
Asterocyclina nassauensis at 315-325.

Limestone: cream, granular (much calcitized), coarsely but

sparsely glauconitic, cherty (at depth), fossiliferous (abun-

dant "larger Foraminifera," some of which are impregnated

with glauconite) _____________________________________________________ ---------------------- 215

650

Asterocyclina sp., Lepidocyclina (Polylepidina) antillea1 at 480-490.

Brown chert at 550-560.

Summary:

Pliocene to Recent (undifferentiated) _____________________ _

50

50

Miocene (undifferentiated) ___

--------------- 130

180

Oligocene (undifferentiated) ___

----------------- 97

277

Upper Eocene (Ocala limestone) ____________________________________ _ ---- --------- 373

650

Potential Water-Bearing Zones:

Limestone _________ --------------------------------------------------- .__________________________________ 373

650

1Reworked ( ? ) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OE' GEORGIA

91

Location: 175 ft. north of Waltz Drive and 0.25 mi. west of crossroads (Waltz Drive and Toussaint Avenue), in Savannah
owner: City of Savannah Driller: Layne-Atlantic Company Drilled: April 1954

CHATHAM COUNTY
Well No.: GGS 379 Elev.: 25

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, finely disseminated phosphatic

grains; interbedded clay, dark-brown, silty, lignitic, mica-

ceous

80

80

In Miocene (Undifferentiated):

Clay: dark-green, silty, abundantly phosphatic at depth, finely

disseminated flakes of mica _______________________________

120

200

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic; limestone, light-gray, dense (much calcitized), sandy,

phosphatic, fossiliferous (molds and impressions of mega-

fossils)

_______ _ ________ __ _______________

35

235

In Oligocene (Undifferentiated):

Limestone: light-gray, dense (much calcitized), nodular, fos-

siliferous (echinoid and bryozoan remains, Ostracods, and

Foraminifera) ________________ _____ ___ _________

108

343

Rotalia mexicana var., Nonion advena, Cibicides americanus var., Cibicides lobatulus at 221-250.

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray to white at depth, crystalline (much

calcitized), somewhat nodular, massive, fossiliferous (molds

and casts of megafossils, abundant bryozoan remains, and

some Foraminifera) ______ __ _______________________

91

434

Operculinoides cf. 0. floridensis, Gypsina vesicularis, Nodosaria latejugata var., Argyrotheca sp. at 313-373.

Asterocyclina nassauensis, Gypsina globula, Siphonina jacksonensis at 373-434.

Limestone: cream, somewhat crystalline (calcitized), fossil-

iferous (abundant echinoid spines, bryozoan remains, and

Foraminifera)

_____ _________________

356

790

Camerina striatoreticulata, Operculina mariannensis, Lepidocyclina (Polylepidina) antillea1 at 524-615.

'Reworked ( 7) fossil of middle Eocene age.

92

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Middle Eocene: Claiborne Group (Undifferentiated):

Thickness (feet)

Limestone: cream, crystalline, granular (highly calcitized),

coarsely glauconitic, fossiliferous (abundant bryozoan re-

mains, and some Foraminifera)____________________

______________ 160

Cancris sp., Gyroidina soldanii var., Siphonina claibornensis, Cibicides mississippiensis, Cibicides pippeni var. at 790-800.
Asterocyclina monticellensis, Cibicides pseudoungerianus var. lisbonensis at 800-810.
Cibicides westi at 830-840.

Limestone: cream, crystalline, granular (highly calcitized), cherty ------------------------------------------- --------------------------- ____________________ 50

Brown chert abundant at 950-960.

Depth (feet)
950
1,000

Summary:

Pliocene to Recent (undifferentiated) __

In Miocene (undifferentiated) __________________

In Oligocene (undifferentiated)_________________________ _ _______

In upper Eocene (Ocala limestone)

_____________ _

In middle Eocene (Claiborne group, undifferentiated) __ _

80

80

155

235

108

343

447

790

210 1,000

Potential Water-Bearing Zones: Limestone _-------------------------------

515

750

Remarks: Sample intervals too large to permit accurate picking of formational tops.

Location: Fairway Oaks Development, southwest of DeRenne and Waters Avenues, opposite golf course, in Savannah
Owner: No.1 T. T. Dunn Driller: Layne-Atlantic Company

CHATHAM COUNTY
Well No.: GGS 380 Elev.: 14

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, finely disseminated phosphatic grains____

5

5

Sand: fine to medium-grained, arkosic ______

10

15

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

93

Thickness (feet)

Clay: dark-gray, silty, lignitic, micaceous, fossiliferous (mac-

roshells); sand, as above____

------------------------------- _________________ 20

Sand: fine to coarse-grained, subrounded_________

15

Depth (feet)
35 50

:Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic, finely disseminated

flakes of mica_________________________________________________________ ---------------------------- 108

158

Reddish-brown phosphatic fragments prominent at 86-96.

Dolomitic limestone: light-brown, saccharoidal, very sandy,

phosphatic ------------------------------------------------------------------------------------------ 10

168

Clay: dark-green, silty, phosphatic, blocky_____________________________________ 31

199

Limestone: light-gray, somewhat argillaceous, very sandy,

phosphatic, fossiliferous (casts and molds of megafossils,

Ostracods, and Foraminifera)----------------------------------------------------

20

219

Nonion pizarrensis, Rotalia beccarii var., Cibicides americanus at 199-209.

Elphidium discoidale, Discorbis subaraucana, Nonion advena,

Cibicides concentricus at 209-219.

Oligocene (Undifferentiated):

Limestone: cream, somewhat crystalline (in texture), nodular

(calcitized), fossiliferous (echinoid and bryozoan remains,

Ostracods, and Foraminifera) ------------------------------ -------------------- 31

250

Rotalia mexicana var., Pyrgo sp., Quinqueloculina sp. at 219-230.
Lepidocyclina (Polylepidina) antilleal, Gypsina globulal, Rotalia mexicana var., Nonionella hantkeni var., Cibicides lobatulus, Cibicides americanus var. at 230-240.

Limestone: yellow, saccharoidal (highly calcitized), fossil-

iferous (Gastropods, Ostracods, and Foraminifera)

60

310

Dictyoconus1 sp. at 250-260.

Summary:

Pliocene to Recent (undifferentiated) ___

50

50

Miocene (undifferentiated) __________________ ------------------------------- _______________ 169

219

Oligocene (undifferentiated) ___

91

310

Potential Water-Bearing Zones:
-Limestone _ __
'Reworked(?) fossil of middle Eocene age.

91

310

94

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Fort Pulaski, Cockspur Island Owner: No.1 USGS Test Hole (Observation Well) Driller: M. M. Gray Drilling Company Drilled: May 1954

CHATHAM COUNTY
Well No.: GGS 381 Elev.: 8

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Clay: dark-gray, somewhat indurated, silty, carbonaceous,

micaceous, fossiliferous (macroshells at certain levels);

some sand, fine to medium-grained, subangular, arkosic

59

59

Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic; interbedded dolomitic

limestone at depth, light-brown, saccharoidal, sandy_

53

112

Brownish-red phosphatic pebbles common at 79-82.

Dolomitic limestone prominent at 82-92.

Limestone: light-gray to white, saccharoidal, sandy, phos-

phatic, fossiliferous (fragments, casts and molds of macro-

shells)

_______________________________________________ ------------------------------ 8

120

Oligocene (Undifferentiated):

Limestone: light-gray, somewhat crystalline, nodular, much

calcitized and massive, fossiliferous (bryozoan remains and

some Foraminifera)

__________ _

12

132

Rotalia mexicana var., Alabamina mississippiensis, Sipho~ nina advena, Cibicides lobatulus, Cibicides mississippiensis at 115-122.

Limestone: cream, somewhat nodular, rather massive, sandy,

fossiliferous (casts and molds of Gastropods and some

Foraminifera)

____________________ 88

220

Pyrgo sp. at 132-142. Quinqueloculina sp., Coskinolina1 sp. at 142-152.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, much calcitized, crystalline, somewhat sac-

charoidal, abundantly fossiliferous (macroshells, abundant

bryozoan remains and Foraminifera)__

______________________________ 85

305

Asterocyclina nassauensis at 225-230.

1Reworked( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

95

Thickness (feet)

Limestone: light-gray, crystalline, saccharoidal, coarsely but

sparsely glauconitic, fossiliferous (abundant bryozoan and

echinoid remains and some Foraminifera)________

40

Limestone: cream, somewhat calcitized and crystalline, rela-

tively soft and porous, granular, somewhat loosely consoli-

dated, sparsely glauconitic, fossiliferous at certain levels

(bryozoan remains and Foraminifera)

____ _______________ 281

Camerina striatoreticulata at 395-401.

Depth (feet)
345
626

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: as above, but more massive, calcitized, somewhat

sandy, fossiliferous (macroshells and Foraminifera at cer-

tain levels) ------------------------------------------------------------------------------------------ 79

705

Limestone: white, somewhat crystalline, massive, coarsely but

sparsely glauconitic, fossiliferous (macroshells and frequent

bryozoan remains) ------------------------- ____________

5

710

Limestone: cream, calcitized and granular, somewhat loosely

consolidated, sparsely glauconitic, fossiliferous (macroshells

and Foraminifera) _____________________________ -----------------------------------------

25

735

Cancris sp., Gyroidina soldanii var., Cibicides pseudoungerianus var. lisbonensis at 730-735.

Marl: yellowish-green becoming cream and granular at depth,

fossiliferous (an abundant microfauna) ; interbedded sand,

fine to medium-grained, subangular __ _

215

950

Textularia dibollensis, Textularia a

Spiroplectammina

mississippiensis var., Robulus alato-limbatus, Discorbis

assulata, Nonion planatus, Nonion inexcavatus, Lagena

acuticosta, Sigmoidella plummerae, Marginulina cocoaensis,

Gyroidina soldanii var., Angulogerina vicksburgensis, Boliv-

ina broussardi, Buliminella robertsi, Cibicides danvillensis,

Cibicides cf. C. westi, Cibicides americanus var. antiquus,

Cibicides lobatulus at 735-740.

Cibicides westi, Cibicides pseudoungerianus var. lisbonensis, Lepidocyclina sp. at 740-766.

Discorbis inornatus at 827-868.

Tallahatta Formation: Lithology as above but much more glauconitic____ Cibicides blanpiedi at 950. Cancris sp., Eponides mexicanus at 986.

144 1,094

96

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Lower Eocene: Wilcox Group (Undifferentiated):

Thickness (feet)

Limestone: light-brown to cream, calcitized, more calcitized and crystalline at depth, granular, somewhat loosely consolidated, glauconitic (abundantly so at certain levels), cherty, pyritiferous, fossiliferous (echinoid and bryozoan remains, Ostracods and Foraminifera)__ ___ __________ ___________ _________ 320

Depth (feet)
1,414

Textularia sp., Robulus sp., Eponides cf. E. dorfi, Valvulineria scrobiculata, Cibicides blanpiedi at 1094-1114. Operculinoides sp., Pseudophragmina sp. at 1156.

Paleocene: Midway Group: Clayton Formation:

Marl: dark-brownish-gray, somewhat indurated, laminated,
silty, glauconitic, abundantly fossiliferous (Ostracods and abundant Foraminifera) _________________________________ _

21 1,435

Spiroplectammina semicomplanata, Gaudryina pyramidata, Nodosaria affinis, Pseudoglandulina manifesta, Valvulineria umbilicatula, Gryoidina depressa, Siphonina prima, Chilostomella ovoidea, Globorotalia membranacea, Globorotalia velascoensis, Dentalina colei, Bulimina cf. B. kugleri, Bulimina quadrata, Anomalina midwayensis, Anomalina pseudopapillosa at 1414-1435.

Summary:

Pliocene to Recent (undifferentiated)

_______________________________ _ 59

Miocene (undifferentiated) ___________________________ ---------------------------------- 61

Oligocene (undifferentiated) ------

------------- 100

Upper Eocene (Ocala limestone)_____

------

406

Middle Eocene (Lisbon formation)-- _------

324

Middle Eocene (Tallahatta formation)----------- 144

In lower Eocene (Wilcox group, undifferentiated) __........ ------------ 320

Paleocene (Clayton formation)______

_ _____ ----- 21

Limestone

Potential Water-Bearing Zones: 610

59 120 220 626 950 1,094 1,414 1,435
730

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

97

Location: In Bloomingdale owner: No. 1 Lowman Driller: Layne-Atlantic Company
Drilled: 1954

CHATHAM COUNTY Well No.: GGS 394

Thickness Depth

(feet)

(feet)

pliocene to Recent (Undifferentiated):

Clay: dark-gray to tan to red (mottled), very sandy, limonitic__ 5

5

Sand: very coarse-grained (up to gravel size), subrounded,

arkosic; interbedded clay, dark-brown, somewhat indurated

and tough, silty, lignitic, micaceous (finely disseminated

flakes)

___ ------------------------

_ ________________ 55

60

In Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic, micaceous

35

95

Phosphatic fragments common at 75-85.

Indurated sand (or sandstone): yellowish-green to dark-

green, somewhat iron-stained, fine-grained, argillaceous,

micaceous (finely disseminated flakes)_

31

126

Clay: dark-green, sandy, somewhat blocky, phosphatic

134

260

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic

__ ------------------------------- ____ ___

18

278

Limestone: light-gray to white, dense, sandy, phosphatic, fos-

siliferous (fragments and casts of megafossils)__

_ _ __ ____ 7

285

Oligocene (Undifferentiated):

Limestone: light-gray, rather dense (calcitized), nodular,

fossiliferous (echinoid and bryozoan remains, Ostracods and

Foraminifera)

_________________________________ _

5

290

Limestone: white, soft and chalky (weathered), fossiliferous

(as above)

- - -- - --- __ - - - - ---- -- -- --------- ---- 10

300

Rotalia mexicana var. at 280-290. Asterocyclina1 sp. at 290-300.

Limestone: yellow, saccharoidal (much calcitized and recrys-

tallized), fossiliferous (fragments and molds of Gastropods,

echinoid and bryozoan remains, Ostracods, and Foraminifera) 10

310

Quinqueloculina sp., Dictyoconus1 sp., Gypsina globula1 sp.,
- Discorbis? sp. at 300-310.
'Reworked ( ?) fossil of middle Eocene age.

98

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Thickness (feet)

Pliocene to Recent (undifferentiated) __ ----------------------------- ________________ 60

In Miocene ( undifferentiated) --------------------------------------------------------------- 225

Oligocene (undifferentiated) _______________________________________ _

25

Depth (feet)
60 285 310

Limestone

Potential Water-Bearing Zones:

25

310

CHATHAM COUNTY

Location: Strachan Ave. near Vernon River, Savannah Owner: No. 1 Boy Scouts (Savannah) Driller: Layne-Atlantic Company Drilled: 1954

Well No.: GGS 395

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, angular, arkosic, finely dis-

seminated phosphatic grains_ _ ____________________

______________ _ 25

25

Clay: dark-gray, silty, lignitic, micaceous, fossiliferous (mac-

roshells at certain horizons) _______________________________________

10

35

Sand: coarse-grained, subangular, phosphatic, arkosic

10

45

Miocene (Undifferentiated): Clay: dark-green, sandy, phosphatic at depth

180

225

Reddish-brown, phosphatic fragments common at 107-117.

Limestone: light-gray, dense, somewhat dolomitized and sac-

charoidal, sandy, phosphatic, fossiliferous (fragments and

casts and molds of megafossils, and some Foraminifera) ____ _

25

250

Elphidium cf. E. discoidale, Cibicides concentricus at 225230.

Oligocene (Undifferentiated):

Limestone: light gray to cream, nodular to granular (in tex-

ture), much calcitized, soft (somewhat weathered) and

chalky, fossiliferous (echinoid and bryozoan remains, Ostra-

cods, and Foraminifera) ____________ _

79

Rotalia mexicana var., Nonionella hantkeni var. at 250-260.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

99

Summary:

Thickness (feet)

pliocene to Recent (undifferentiated)______

45

Miocene (undifferentiated) ___ __ __ __________ __ ____________ ___ _ ______________

205

Oligocene (undifferentiated) _ _______ ____________ _____________ _________________________ 79

Depth (feet)
45 250 329

Limestone -------

Potential Water-Bearing Zones:

79

329

Location: Owner: No. 1 American Petroleum Company Driller: Layne-Atlantic Company

CHATHAM COUNTY
Well No.: GGS 396 Elev.: 161

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, phosphatic (finely disseminated) _______________ 5

5

Clay: bluish-gray to red (mottled), very sandy, micaceous;

sand, as above______________

______________________________________________ _

5

10

Sand and clay: as above; some clay, dark-prown, somewhat

indurated, lignitic, micaceous ______

8

18

Sand: coarse-grained (up to gravel size), subrounded, arkosic _ 7

25

Miocene (Undifferentiated):

Clay: yellowish to dark-green, sandy, phosphatic, micaceous

(finely disseminated flakes) ; interbedded dolomitic lime-

stone, light-brown, saccharoidal, sandy, phosphatic__ ______ ________ 190

215

Phosphatic pebbles common at 75-85. Dolomitic limestone prominent at 140-150.

Limestone: white, dense, sandy, phosphatic, fossiliferous

(fragments, casts and molds of megafossils, and some Ostra-

cods and Foraminifera)______________ ____________________________________________ 15

230

Elphidium sp., N onion pizarensis, Valvulineria floridana, Nonion advena, Discorbis subaraucana, Cibicides lobatulus, Cibicides concentricus at 210-220.

Pyrgo sp. at 220-230.

-No samples ________________
'Average elevation taken from State Highway map.

10

240

100

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

In Oligocene (Undifferentiated):

Thickness (feet)

Limestone: cream, somewhat crystalline (calcitized), rather

massive, nodular, fossiliferous (casts and molds of Gastro-

pods, bryozoan remains, and Foraminifera) __

70

Quinqueloculina sp., Pyrgo sp., Rotalia mexicana var., Dictyoconus2 sp., Gypsina globula2 at 240-260.

Depth (feet)
310

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray to white at depth, crystalline (much cal-

citized), fossiliferous (macroshells, abundant echinoid and

bryozoan remains, Ostracods, and Foraminifera)

190

500

Operculinoides cf. 0. floridensis at 300-320. Operculinoides floridensis at 340-360.

Limestone: cream, granular (highly calcitized), fossiliferous

(almndant bryozoan remains and abundant "larger Fora-

minifera") _.

_______ _________ ______________

__ 220

720

Asterocyclina sp., Camerina striatoreticulata, Operculina mariannensis at 500-520.
Lepidacyclina (Polylepidina) antillea 2 at 520-540.

Summary:

Pliocene to Recent (undifferentiated) __

Miocene (undifferentiated) _____________________ _

No samples .

___________________ _

In Oligocene (undifferentiated) __

In upper Eocene (Ocala limestone)_

25

21i

205

230

10

240

70

310

410

720

Limestone

Potential Water-Bearing Zones:

-- 480

720

Remarks: Overall quality of well cuttings poor.

'Reworked ( ? ) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

101

Location: Cherokee Hill, Port Wentworth owner: No. 1 Port Wentworth Driller: Mineral Development Company Drilled: October 1955

CHATHAM COUNTY
Well No.: GGS 506 Elev.: 43

Thickness Depth

(feet)

(feet)

pliocene to Recent (Undifferentiated):

Sand: fine-grained, phosphatic (finely disseminated), arkosic;

interbedded clay, dark-gray, somewhat indurated, silty, car-

bonaceous, micaceous ___

45

45

Sand: coarse-grained, subrounded, arkosic__

2

47

Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic, micaceous, cherty (at

depth) --------------------------------------------------------------------------

__ 214

261

Reddish-brown phosphatic fragments and dark-green chert prominent at 175-180.

Dolomitic limestone: light-brown, saccharoidal, sandy__

4

265

Limestone: light-gray to white, sandy, phosphatic, fossilifer-

ous (fragments and molds of megafossils, echinoid and bryo-

zoan remains, and some Foraminifera)

___________ _

5

270

Elphidium sp., Discorbis subaraucana at 268-270.

Oligocene (Undifferentiated):

Limestone: cream, somewhat soft and chalky (weathered),

fossiliferous (casts and molds of megafossils, echinoid and

bryozoan remains, and some Foraminifera) _________________

35

305

Quinqueloculina sp., Pyrgo sp., Nonionella hantkeni var., Rotalia mexicana var. at 271-273.
Asterocyclina1 sp., Gypsina globula\ Lepidocyclina (Polylepidina) antillea1 at 288-293.

Limestone: cream to yellowish-brown, saccharoidal, rather

massive, fossiliferous (fragments and molds of Gastropods,

echinoid and bryozoan remains, and Foraminifera)-----------------~- 53

358

Dictyoconus1 sp., Discorbis? sp., Gypsina globulal, Quinqueloculina sp. at 305-310.
Quinqueloculina sp. abundant at 330-335.
-
'Reworked ( ?) fossil of middle Eocene age.

102

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Eocene: Jackson Group: Ocala Limestone:

Thickness (feet)

Limestone: light-gray to white at depth, massive, crystalline (much calcitized), fossiliferous (abundant bryozoan remains and some Foraminifera) _______________________ ------------------------------ 142

Asterocyclina sp. at 355-360. Operculinoides cf. 0. floridensis at 370-380. Asterocyclina nassauensis at 410-420. Pseudophragmina flintensis at 490-500.

Limestone: cream, granular, sparsely but coarsely glauconitic,

sandy (at depth), fossiliferous (abundant echinoid and bryo-

zoan remains and abundant "larger Foraminifera"; inter-

bedded saccharoidal limestone, light-gray, massive, crystal-

line, sparsely but coarsely glauconitic, fossiliferous (abun-

dant echinoid and bryozoan remains and abundant "larger

Foraminifera'') ---------------------------------------------- ______________________

230

Lepidocyclina (Polylepidina) sp., Asterocyclina monticellensis at 510-520.
Asterocyclina sp., Camerina striatoreticulata prominent at 530-540.

Depth (feet)
500
730

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: white to light-gray, massive, crystalline, coarsely

but sparsely glauconitic, fossiliferous (fragments, casts and

molds of megafossils, abundant echinoid and bryozoan re-

mains, and some Foraminifera) ; interbedded calcitized

limestone, light-gray, saccharoidaL ________________________________

160

Lepidocyclina antillea? at 730-740. Asterocyclina monticellensis at 740-750. Gyroidina nassauensis, Discorbis inornatus at 804 (core). Cibicides westi, Cibicides pseudoungerianus var. lisbonensis at 820 (core). Macroshells abundant at 860-890.

Limestone: cream, granular, somewhat saccharoidal, rather loosely consolidated, sparsely glauconitic, pyritiferous, cherty 110

Brown chert prominent at 920-930.

890 1,000

Tallahatta Formation:
Marl: light-gray, partially indurated, coarsely glauconitic (abundantly glauconitic at certain levels), fossiliferous, (some Foraminifera at certain horizons) ___
Cib.icides blanpiedi at 1006. Cibicides blanpiedi, Cibicides tallahattensis at 1079.

88 1,088

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

103

Summary:

Thickness Depth

(feet)

(feet)

pliocene to Recent (undifferentiated)___________________________________

47

Miocene (undifferentiated) ____ _ _____ ___ ________________

223

Oligocene (undifferentiated) ____ ____ ____ _ ___________

88

Upper Eocene (Ocala limestone)_

______________________ ____ 372

Middle Eocene (Lisbon formation)__________________________

270

Middle Eocene (Tallahatta formation)

88

47 270 358 730 1,000 1,088

Limestone ----- ... - ----

Potential Water-Bearing Zones:

620

890

Location: Port Wentworth Owner: No.1 Savannah Electric and Power Company Driller: Layne-Atlantic Company

CHATHAM COUNTY
Well No.: GGS 523 Elev.: 16

Thickness Depth

(feet)

(feet)

No samples _________________________________ ---------------------------------------------------------- 60

60

In Pliocene to Recent (Undifferentiated):

Sand: coarse-grained, subrounded, arkosic; clay, dark-brown,

carbonaceous, and micaceous ____________________________________________________ 10

70

Miocene (Undifferentiated):

Sand: fine to coarse-grained, phosphatic

10

80

Dark-green chert prominent at 170-180.

Clay: dark-green, sandy, phosphatic and cherty at depth_

180

260

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic _____________

__ __ _______ __

______ __________ ___________________ 10

270

No samples ____

10

280

Limestone: light-gray to white, dense, sandy, phosphatic, fos-

siliferous (fragments, casts and molds of megafossils, bryo-

zoan remaiili, and Ostracods) ____________________ --------------------------------- 20

300

104

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: white, somewhat soft and chalky (weathered?) fossiliferous (echinoid and bryozoan remains and some Foraminifera) -------------------------------------------------------------- ---------------------- 15
Asterocyclina1 sp., Gypsina globulal, Eponides byramensis, Robulus articulatus, Discorbis cf. D. tentoria at 300-310. Dictyoconus1 sp., Quinqueloculina sp. at 320-330.

Limestone: cream, saccharoidal (much calcitized), 'fossilifer-

ous (Foraminifera) -------------------------------

45

Depth (feet)
315 360

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, crystalline (much calcitized), dense,

massive, fossiliferous (fragments and molds of megafossils,

bryozoan remains, and some Foraminifera) _______________ _

18

378

Limestone: white, somewhat crystalline (much calcitized),

fossiliferous (abundant bryozoan remains and some Fora-

minifera) -----------------------------------------------------------------

30

408

Limestone: light-gray, crystalline (highly calcitized), dense,

pyritiferous, coarsely glauconitic at depth, fossiliferous

(macroshells, abundant echinoid and bryozoan remains, and

Foraminifera) _______ ___________ ______ ____________________ ____ ________________

77

485

Limestone: cream, somewhat softer than above, granular (in

texture), fossiliferous (macroshells, abundant echinoid and

bryozoan remains, and Foraminifera)

___________________ 209

694

Camerina striatoreticulata, Gypsina globula, Operculina mariannensis prominent at 490-500. Lepidocyclina antillea1 at 559-569.

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: white to light-gray, massive, crystalline, coarsely

but sparsely glauconitic, fossiliferous (fragments, casts and

molds of megafossils, abundant echinoid and bryozoan re-

mains, and some Foraminifera); interbedded limestone,

light-gray, saccharoidal ____

132

826

Lepidocyclina antillea? at 699-709. Asterocyclina monticellensis at 696-706.

Limestone: cream, granular, cherty, pyritiferous_

110

936

Tallahatta Formation:

Limestone: cream, granular, cherty, pyritiferous, abundantly

glauconitic, fossiliferous (Foraminifera) ____

20

956

Asterocyclina sp., Cibicides blanpiedi at 936-946.

1Reworked( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

105

Summary:

Thickness (feet)

No samples -- ---- --------------------------------------------- _____ __ _

60

In Pliocene to Recent (undifferentiated)_____________

10

Miocene (undifferentiated) -------------------------------- _______ ________

230

Oligocene (undifferentiated) ------------------------------ ------------------------- 60

Upper Eocene (Ocala limestone)_________________________ --------------------------- 334

Middle Eocene (Lisbon formation) ___________________________ ---------------------------- 242

Middle Eocene (Tallahatta formation)-------------------------------------------------- 20

Depth (feet)
60 70 300 360 694 936 956

Limestone

Potential Water-Bearing Zones:

526

826

Location: Isle of Hope Driller: A. E. Cory and Son Drilled: 1956

CHATHAM COUNTY
Well No.: GGS 535 Elev.: 161

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained to coarser-grained at depth, finely dissemi-

nated phosphatic grains; interbedded clay, dark-gray to

black, somewhat fissile, lignitic, micaceous, fossiliferous

(megafossils at certain levels) --------------------------------------------

50

50

Macroshells prominent at 15-30.

Miocene (Undifferentiated):

Clay: dark-green, sandy, much sandier at depth, phosphatic________ 140

190

Limestone: light-gray to light-brown, very dense (much calci-

tized), sandy, phosphatic, dolomitized at certain levels,

fossiliferous (casts and molds of megafossils)__ _____ __________________ 45

235

Oligocene (Undifferentiated):

Limestone: light-gray, dense (much calcitized), granular,

crystalline, sandy, fossiliferous (some echinoid remains and

Foraminifera)

----------------------------------------------- ______________ 45

280

Rotalia mexicana var., Quinqueloculina sp. at 240-250. Dictyoconus 2 sp., Nonionella hantkeni var. at 260-270.

'Average elevation taken from State Highway map. 'Reworked ( ?) fossil of middle Eocene age.

106

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Limestone: cream, rather massive, somewhat oolitic, fossil-

iferous (casts and molds of megafossils and some Fora-

minifera) _______ --------------------------------------------

_____________ _

40

Depth (feet)
320

Summary:

Pliocene to Recent (undifferentiated) __________________

Miocene (undifferentiated) ________

______________________________ _

Oligocene (undifferentiated) __________

_____________ _

50

50

185

235

85

320

Limestone _________

Potential Water-Bearing Zones:

85

320

Location: Mendel Avenue, Savannah Owner: No.1 M.P. Linskey Driller: H. L. Penton Drilled: 1958

CHATHAM COUNTY
Well No.: GGS 561 Elev.: 17

Thickness Depth

(feet)

(feet)

15

15

In Pliocene to Recent (Undifferentiated):

Sand: fine-grained, subangular, sparsely phosphatic; some

clay, dark-gray to dark-green, silty, micaceous, carbona-

ceous, fossiliferous (macroshells) ______________________

70

85

First observed macroshells at 20-25.

Miocene (Undifferentiated):

Clay: dark-green, blocky, sandy, phosphatic; interbedded sand,

fine to medium-grained, subangular, phosphatic

105

190

Reddish-brown to jet-black phosphatic pebbles common at 85-100.

Light-brown, saccharoidal, sandy, phosphatic, dolomitic limestone at 190.

Clay: yellowish-green, blocky, tough, sandy, phosphatic; in-

terbedded sand, fine to medium-grained, subangular, phos-

phatic ----------------------------------------------------------------

___________________ _ 38

228

No samples ________________________ ----------------------------------------------

2

230

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

107

In Oligocene (Undifferentiated):

Thickness (feet)

Limestone: cream, soft, chalky, sandy, fossiliferous (macro-

shells, echinoid and bryozoan remains, Ostracods, and Fora-

minifera) _________ ------------------------------------- --------------------------

20

No samples _________

10

Limestone: cream, somewhat nodular and calcitized, rather

massive, fossiliferous (macroshells, bryozoan remains, Os-

tracods and Foraminifera) ________________ ---------------------------------------

90

Textularia sp., Robulus sp., Discorbis sp., Nonionella hantkeni var. byramensis, Cibicides americanus at 260-270. Asterigerina subacuta, Nonionella hantkeni var. byramensis at 290-305. Dictyoconus1 sp. at 305-325. Miliolidae common at 320-330. Gypsina globulal, Dictyoconus1 sp. at 330-350.

Depth (feet)
250 260
350

Summary:

No samples ----------------- _________________ -------------------------------------------------------- 15

15

In Pliocene to Recent (undifferentiated) ________ ------------------------------------- 70

85

Miocene (undifferentiated) ______________________

143

228

No samples _-------------------------------------------- _________ ___________ _____________________________ 2

230

In Oligocene (undifferentiated)_______________ ------------------------------ 120

350

Potential Water-Bearing Zones:

Limestone _------------------------------------------------------------------------------------------------ 120

350

Location: Ferguson Avenue, Savannah Owner: No. 1 R. Knight Driller: H. L. Penton Drilled: 1958

CHATHAM COUNTY
Well No.: GGS 562 Elev.: 20

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, subangular; some clay, dark-gray to dark-

green, silty, micaceous, carbonaceous, fossiliferous (macro-

shells at certain levels)-----------------------------------------

80

80

- First observed macroshells at 30-40.
'Reworked ( ? ) fossil of middle Eocene age.

108

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Miocene (Undifferentiated):

Thickness (feet)

Clay: dark-green, somewhat blocky, sandy, phosphatic; interbedded sand, fine to medium-grained, subangular, phosphatic__ 140

Reddish-brown to jet-black phosphatic pebbles and fish teeth prominent at 80-90.

Depth (feet)
220

No samples ------------------------------------------------------------------

10

230

In Oligocene (Undifferentiated):

Limestone: cream, soft, chalky, sandy, fossiliferous (macro-

shells, echinoid and bryozoan remains, and Foraminifera) ____ 50

280

Textularia sp., Rotalia mexicana var., Nonionella hantkeni var. byramensis, Nonionella oligocenica at 240-260.

Limestone: cream, somewhat calcitized and massive, nodular,

fossiliferous (macroshells, echinoid and bryozoan remains,

and Foraminifera) ------------------------------ __________________________________________ 65

345

Summary:
Pliocene to Recent (undifferentiated) ___ Miocene (undifferentiated) _______________________ No samples ------------------------------------------------In Oligocene (undifferentiated)____ _____________

80

80

140

220

10

230

115

345

Limestone

Potential Water-Bearing Zones:

65

345

Location: Wilmington Park Owner: No. 1 Wilmington Park (City of Savannah) Driller: M. H. Gray Drilling Company Drilled: 1958

CHATHAM COUNTY
Well No.: GGS 563 Elev.: 11

Thickness (feet)

Depth (feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, subangular; interbedded clay, dark-gray

to dark-green, silty, micaceous, carbonaceous, fossiliferous

(macroshells) _____ ____ ____________________________ _____________ ________ ___________ 55

55

First observed macroshells at 20-25.

Macroshells abundant at 40-45.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

109

Sand: coarse-grained, subrounded, sparsely phosphatic__

Thickness (feet)
10

Depth (feet)
65

Miocene (Undifferentiated):

Clay.: dark-green, sandy, phosphatic; sand, as above__ ------------------- 54

119

Reddish-brown to jet-black, phosphatic pebbles common at 65-70.

Dolomitic limestone: light-brown, dense, saccharoidal, sandy,

abundantly phosphatic ------------------------------------------------ _____________________ 1

120

Clay: yellowish-green, blocky, somewhat tough, sandy, phos-

phatic ---------------------------------------------------- --------------------------------------------- 30

150

Oligocene (Undifferentiated):

Limestone: cream, soft, chalky, powdery, nodular and massive

at depth, fossiliferous (fragments and molds of macroshells,

echinoid and bryozoan remains, and Foraminifera) _______________ 95

245

Asterocyclina1 sp. at 165-175. Textularia sp., Discorbis sp., Gypsina globulal, Cibicides lobatulus at 175-185. Nonionella oligocenica, Rotalia mexicana var., Dictyoconus sp.1 at 185-195.

Limestone: light-gray, much calcitized, somewhat nodular,

massive, sandy, fossiliferous (as above)____________________ _ ________________ 10

255

Upper &Jcene: Jackson Group: Ocala Limestone:

Limestone: white, somewhat crystalline and calcitized, fos-

siliferous (abundant bryozoan remains and frequent Ostra-

cods and Foraminifera)_____

____________ _

110

365

Robulus arcuato-striatus var. carolinianus, Robulus alatolimbatus, Guttulina irregularis, Guttulina spicaeformis, Siphonina jacksonensis, Alabamina obtusa, Lingulina sp., Planularia sp., Cibicides lobatulus, Planulina cocoaensis, Asterocyclina nassauensis, Operculinoides floridensis at 255-265.

Limestone: white, crystalline, somewhat saccharoidal, coarsely

but sparsely glauconitic__________________________________________________________ _

30

395

Limestone: cream, considerably calcitized, granular________

5

400

'Reworked ( ?) fossil of middle Eocene age.

110

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Thickness (feet)

Pliocene to Recent (undifferentiated)___ ___________________ ________________

65

Miocene (undifferentiated) _________________ _______________________ ___________________ 85

Oligocene (undifferentiated) ____________________ _________________ __ ___________________ 105

Upper Eocene (Ocala limestone) ________________ ------------------------------

145

Depth (feet)
65 150 255 400

Potential Water-Bearing Zones: Limestone _________________________________

250

400

Location: Near elevated steel reservoir, Harmon Church, Fort Benning Military Reservation
Owner: U.S. (Army) Govt. Driller: Layne-Atlantic Company

CHATTAHOOCHEE COUNTY
Well No.: GGS 18 Elev.: 445

Thickness Depth

(feet)

(feet)

Upper Cretaceous: Blufftown and Eutaw Formations (Undifferentiated):

Sand: fine to medium-grained, angular, limonitic, micaceous_____ 60

60

Sand: as above; some clay, lignitic, micaceous__

60

120

Clay: gray to light-brown, lignitic, micaceous, fossiliferous

(macroshells) ___ --------------------------------- __________________________________

140

260

Sand: fine to coarse-grained, crystals of calcium sulfate__

40

300

Clay: as above, but becoming somewhat mottled at depth; in-

terbedded sand, fine to coarse-grained, angular, gypsiferous__ 94

394

In Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, arkosic _______________________________ 90

484

Summary:

Upper Cretaceous (Blufftown and Eutaw formations, undiffer-

entiated) __________________ ------------------------------------------------------------------------ 394

394

In Upper Cretaceous (Tuscaloosa formation)-------------------------------------- 90

484

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

111

Potential Water-Bearing Zones:
Sand: fine to coarse-grained__________________________________________________ Sand: fine to coarse-grained________________________________________________

Thickness Depth

(feet)

(feet)

40

300

41

435

Remarks:
Ground water derived from water-bearing sand at depth 260-300 is probably mineralized on account of the included crystals of calcium sulfate.

CHATTAHOOCHEE COUNTY

Location: South side of Upatoi Creek, west Well No.: GGS 332 side of Engineering Building, Fort Benning Elev.: 240 Military Reservation
Owner: No. 1 Fort Benning Engineering School Driller: Layne-Atlantic Company Drilled: November 1952
Thickness (feet)

Depth (feet)

Upper Cretaceous: Eutaw Formation:

Sand: yellow, fine to medium-grained, argillaceous ________________

5

5

Sand: as above; some clay, gray, micaceous_____________________

10

15

Sand: fine to coarse-grained, angular, somewhat arkosic____

27

42

Tuscaloosa Formation:

Kaolin: gray to somewhat mottled at depth, micaceous, sandy___ 32

74

Sand: fine to coarse-grained, angular, arkosic, micaceous; in-

terbedded clay, gray to pale-green, somewhat waxy, micaceous 233

307

Summary:
Upper Cretaceous (Eutaw formation) _______ Upper Cretaceous (Tuscaloosa formation)

42

42

265

307

Potential Water-Bearing Zones:

Sand: coarse-grained __ ----------------------------------------------------------------------------- 21

166

Sand: coarse-grained __________ _________ _______________

27

213

Sand: coarse-grained ________ ________________________________________

39

307

112

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Remarks:
On the basis of other knowledge of this area it is felt that even better waterbearing sands occur at depths below total depth of above well.

Location: 0.25 mi. south of junction of Highways 26 and 280, few hundred yd. west of Highway 280, in Cusseta
Owner: No 1 City of Cusseta Driller: Layne-Atlantic Company Drilled: May 1953

CHATTAHOOCHEE COUNTY
Well No.: GGS 341 Elev.: 550

Thickness Depth

(feet)

(feet)

Upper Cretaceous: Cusseta Sand:

Sand: fine to coarse-grained, angular; interbedded clay, mot-

tled (light-gray to red), micaceous, sandy _____________________

60

60

Blufftown Formation:

Clay: tan to dark-gray to black at depth, carbonaceous, mica-

ceous; interbedded sand, fine to medium-grained, angular,

micaceous _______________

94

154

Limestone: gray, dense, crystalline, sandy, fossiliferous (mac-

roshells) ______________________________________________________________________

6

160

Clay: dark-gray to black, carbonaceous, micaceous, pyritifer-

ous, fossiliferous (macroshells, Ostracods, and Foraminifera

at depth) ____________ ------------------------------------------------------ ___________________ 70

230

Clay (or marl) : as above _____ _

75

305

Vaginulina texana at 230-240. Kyphopyxa christneri at 275-285.

Sand: fine to medium-grained, angular; interbedded clay, as

above ________ ----------------------------------------------------------

91

396

Clay (or marl): as above ________________________________

31

427

Sand: fine to medium-grained, angular, micaceous; inter-

bedded clay, as above________________________________________________________________________ 111

538

Eutaw Formation:

Shale: dark greenish-gray to black, fissile, chloritic, carbona-

ceous, fossiliferous at certain levels (macroshells and Ostra-

cods) ____________________

________________________________________________ _

54

592

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

113

Thickness (feet)
Sand: fine to medium-grained, indurated at depth, abundantly micaceous, phosphatic, fossiliferous (macroshells and some Ostracods at certain horizons)---------------------------------------- _______________ 60

Depth (feet)
652

Tuscaloosa Formation: Upper Part:

Sand: medium to coarse-grained, angular, arkosic, scattered

grains of "rose quartz111 ; interbedded clay, mottled (yellow-

ish to dark-green to red), somewhat fissile and splintery,

iron-stained (particularly the green-colored clay), mica-

ceous, sandy _______________________________________________________________________________ 318

970

Middle Part:

Clay: mottled (dark-green to tan to red), somewhat fissile

and splintery, iron-stained (particularly the green-colored

clay), micaceous, sandy; interbedded sand, medium to

coarse-grained, angular, arkosic_____________________________________ _

133

1,103

Lower Part:
Sand: medium to coarse-grained, rather massive, angular, arkosic; interbedded clay, as above______ _ ___________________ _

82 1,185

Basement Complex (Undifferentiated):

Crystalline rock: light-gray, argillaceous (weathered), to

dense, dark-gray (fresh, unweathered), abundantly mica-

ceous2 ___________ ________________________

__________________________________ 20

1,205

Summary:

Upper Cretaceous (Cusseta sand)

60

Upper Cretaceous (Blufftown formation)

478

Upper Cretaceous (Eutaw formation) ___

114

Upper Cretaceous (Tuscaloosa formation)

533

Basement complex (undifferentiated) ____________________

20

Potential Water-Bearing Zones:

Sand: fine to medium-grained _______

------------------------------ ______________ 111

Sand: medium to coarse-grained __ ------------------------------------------------------ 318

-Sand: medium to coarse-grained _____ _________________
1Not pure rose quartz, but iron-stained grains of quartz. 1Mostly biotite mica.

_________________________ 82

60 538 652 1,185 1,205
538 970 1,185

114

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Remarks:
Owing to unusually deep dissection (rugged topography), it is possible that the sands above 538 feet may be dry through ground-water leakage (spring discharge). Hence, in order to be safe, water wells in this area should be completed in the more deeply-buried sands of Tuscaloosa age.

Location: 0.9 mi. east of intersection of Highways 37 and 39, 0.4 mi. north of Highway 37, in Fort Gaines
Owner: No. 1 Speight School Driller: Layne-Atlantic Company Drilled: August 1954

CLAY COUNTY
Well No.: GGS 402 Elev.: 390

Thickness Depth

(feet)

(feet)

Middle Eocene: Claiborne Group: Lisbon Formation:

Sand: fine to coarse-grained; clay, tan to red (mottled),

sandy, limonitic; some limestone, yellow, much leached, iron-

stained, fossiliferous at depth (bryozoan remains and

Foraminifera) ____

_____________ _

27

27

Limestone: as in above sample Cibicides westi at 27-35.

18

45

Clay: yellowish-green, sandy, somewhat indurated; some lime-

stone, gray, dense, crystalline, sandy, fossiliferous (macro-

shells) ----------------------------------------------------------------------------------------

21

66

Clay: yellowish-green, with tan to red streaks (somewhat

mottled), blocky, micaceous; some limestone, as above

20

86

Tallahatta Formation:

Clay: yellowish-green to light-gray, blocky, somewhat indur-

ated and tough at depth, micaceous, fossiliferous (some

Foraminifera) ; limestone, light-gray, dense, sandy, coarsely

glauconitic ______

___________________________

_______________________

24

110

Cibicides tallahattensis, Valvulineria jacksonensis var. at 86-110.

Sand: fine to coarse-grained, subangular grains, sparsely

phosphatic, indurated at depth, fossiliferous (a coquina)

80

190

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: dark-gray, sandy, carbonaceous, micaceous, pyritiferous

and fossiliferous at depth (some Foraminifera) ; limestone,

gray, dense, coarsely glauconitic, sandy____ ---------------------------------- 19

209

Eponides dorfi, Anomalina sp., Asterigerina sp. at 190-209.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

115

Clay: as above --------------------------------------------------------------------------

Thickness (feet)
103

Sand: fine to medium-grained, subangular, abundantly glauconitic; some clay, as above________________ ___________________ _________ ___ ___ 20

Depth (feet)
312
332

Paleocene: Midway Group: Clayton Formation:

Clay: gray to tan to red (mottled), sandy, micaceous, baux-

itic ( ?) ; sand, fine to coarse-grained, subangular, scattered

grains of pale-green quartz________________________________________________________ 18

350

Clay (or fuller's earth) : light-gray, sandy, carbonaceous, mi-

caceous ----------------------

20

370

Indurated sand: fine-grained, somewhat argillaceous, glauco-

nitic, fossiliferous (Foraminifera)_______

___________ __ 20

390

Operculinoides catenula common at 385-391.

Limestone: light-gray, somewhat argillaceous, sandy, fossili-

ferous (casts and fragments of megafossils, bryozoan re-

mains, Ostracods, and Foraminifera) __

110

500

Summary:

Middle Eocene (Lisbon formation) ___

-----------------

86

86

Middle Eocene (Tallahatta formation) _________________

104

290

Lower Eocene (Wilcox group, undifferentiated)

142 ------------------

332

Paleocene (Clayton formation) __

__________________ _

168

500

Potential Water-Bearing Zones:
Sand: fine to coarse-grained _ Limestone _________ ____ ______________ _

80

190

110

500

Remarks:
A fault, postulated on the different sections penetrated by this well and well 435, is indicated between this well and well 435. Accordingly, this well, on account of its much thicker, much more complete section, probably represents the down-thrown side (of the fault). More drilling is needed before the amount of throw, or displacement, can be determined.

116

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

CLAY COUNTY

Location: Northeast part of town, top of high hill, at elevated steel reservoir, in Fort Gaines
Owner: No. 2 City of Fort Gaines Driller: Layne-Atlantic Company Drilled: 1955

Well No.: GGS 435 Elev.: 400

Thickness Depth

(feet)

(feeH

Middle Eocene: Claiborne Group: Tallahatta Formation:

Sand: fine to coarse-grained, subangular; clay, brick-red,

sandy, limonitic ___

________________ __ ______________________

43

43

Sand: fine to coarse-grained, subangular; limestone, yellow-

ish and leached, sandy; some clay, yellowish-green with

some gray to chocolate-colored, blocky, carbonaceous, sandy,

micaceous; fragments of buhrstone (latter at depth), dark-

gray to brown, extremely dense, opaque, and crystalline____________ 41

84

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: dark-gray, silty, carbonaceous; limestone, light-gray,

dense, saccharoidal, coarsely glauconitic; sand, as above____

41

125

Clay: dark-gray, silty, carbonaceous, pyritiferous ____________________ 72

197

Sand: fine to medium-grained, subangular, indurated at cer-

tain levels, abundantly glauconitic ______ ___ _____ _ _______________ 31

228

Paleocene: Midway Group: Clayton Formation:

Sand: fine to coarse-grained, subangular, scattered grains of

pale-green quartz _________________________________________________________

41

269

Clay (or fuller's earth) : light-gray, silty, blocky, carbona-

ceous, micaceous; some sand, as above_______

29

298

Sand: coarse-grained, subangular; some clay, as above__

5

303

Limestone: light-gray, somewhat soft and chalky, fossilifer-

ous (fragments and casts of megafossils, bryozoan remains,

Ostracods, and some Foraminifera) ______________ _____________________________ 79

382

Argyrotheca sp. at 310-330. Anomalina midwayensis at 330-351. Discorbis midwayensis var. at 351-371.

Limestone: as above but dense (much calcitized), pyritifer-

ous, sandy, sandier with depth____ --------------------------------------------------- 73

455

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

117

Summary:

Thickness (feet)

:Middle Eocene (Tallahatta formation) ------------------------------------------------ 84 Lower Eocene (Wilcox group, undifferentiated) ------------------------------ 144 paleocene (Clayton formation) ------------------------------------------------------------ 227

Depth (feet)
84 228 455

Potential Water-Bearing Zones:

Sand: fine to coarse-grained ______________ ----------------- ----------------------

41

269

Limestone ------------------------- _____ ------------------ ---- ---------- --- ----------------------------- 149

455

Location: Approximately 5 mi. west of Bluffton Owner: No.1 H. B. Hightower Driller: Layne-Atlantic Company Drilled: 1955

CLAY COUNTY
Well No.: GGS 464 Elev.: 400

Thickness Depth

(feet)

(feet)

Middle Eocene: Claiborne Group: Lisbon Formation:

Sand: fine to coarse-grained; some clay, gray to red (mottled) ,

sandy, limonitic ---------------------- _______________________ ----------------------------------- 57

57

Sand: fine to coarse-grained; interbedded stringers of clay,

yellowish-green, sandy, micaceous____

____________________________

23

80

Sand: coarse-grained; some clay, tan to dark-brown, sandy

15

95

Limestone: yellowish-green to cream, dense, sandy, sparsely

phosphatic, fossiliferous (fragments and molds of megafos-

sils, Ostracods, and Foraminifera) _____________________

51

146

Cibicides westi at 95-100.

Tallahatta Formation:

Sand: fine to coarse-grained, subangular, sparsely phosphatic;

some clay, yellowish-green with red streaks (mottled),

sandy, micaceous ______________________ ----------------------------------------------------- 82

228

Cibicides tallahattensis, Valvulineria danvillensis var. at 228-238.

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: dark-gray, sandy, carbonaceous, micaceous; limestone,

light-gray, dense, crystalline, sandy, coarsely glauconitic,

fossiliferous (some macroshells) __________________________________

21

249

118

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Clay: dark-gray, sandy, carbonaceous, micaceous, pyritiferous__ 116

Sand: fine to medium-grained, subangular, abundantly glau-

conitic ___

13

Depth (feet)
365
378

Paleocene: Midway Group: Clayton Formation:

Sand: fine to coarse-grained, subangular, grains of pale-green

quartz ----------------------------------------------------------------------------------

14

392

Clay: dark-gray, silty, carbonaceous, fossiliferous at depth

(Ostracods and Foraminifera)__________________________

______________ 38

430

Eponides dorfi, Robulus wilcoxensis, Valvulineria wilcoxensis, Valvulineria scrobiculata at 392-412.

Limestone: light-gray, dense, crystalline but somewhat argil-

laceous and "earthy," pyritiferous, fossiliferous (fragments

and molds of megafossils, bryozoan remains, and some Fora-

minifera) -----------------------------------------------

----------------

24

454

Robulus midwayensis at 422-433.

Summary:
Middle Eocene (Lisbon formation) ______________ Middle Eocene (Tallahatta formation) _ Lower Eocene (Wilcox group, undifferentiated) ____ Paleocene (Clayton formation) ____

146

146

82

228

150

378

76

454

Potential Water-Bearing Zones:
Sand: fine to coarse-grained Limestone ________________________

14

392

24

454

Location: At City Water Works in Fort Gaines Owner: No. 3 City of Fort Gaines Driller: Layne Atlantic Company Drilled: 1958

CLAY COUNTY
Well No.: GGS 556 Elev.: 146

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Clay: gray to tan to reddish-brown (somewhat mottled),

sandy, limonitic _ ________________

--------------------------------- 11

11

Sand: medium-grained, angular, limonitic_____________________________

5

16

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

119

paleocene: Midway Group: Clayton Formation:

Thickness Depth

(feet)

(feet)

Sand: as above; marl, black, carbonaceous, micaceous, fossil-

iferous (macroshells, echinoid spines, Ostracods and Fora-

minifera)

------------------------------------------------------------------------ 7

23

Robulus sp., Valvulineria wilcoxensis, Valvulineria scrobiculata, Eponides dorfi at 16-23.

Sand: fine to coarse-grained, angular; marl, as above______

77

100

Limestone: gray, dense, crystalline, sandy, pyritiferous, fos-

siliferous (fragments, casts and molds of megafossils, bryo-

zoan remains and Foraminifera)

___________________________ _ 34

134

Robulus midwayensis, Discorbis midwayensis var. trinitatensis at 105-116.

Sand: medium-grained, angular

27

161

Marl: gray, silty, micaceous; limestone, as above Eponides lotus at 161-167.

6

167

Limestone: gray, dense, crystalline, sandy, coarsely glauco-

nitic, fossiliferous (fragments, casts and molds of megafos-

sils)

_____________ -----------------------------------------------------------------

6

173

Sand: fine to coarse-grained, angular _

14

187

Upper Cretaceous: Providence Sand:

Marl: dark, bluish-gray to black, highly micaceous, carbo-

naceous, sandy, pyritiferous; sand, as above _________________________

21

208

Sand: fine to coarse-grained, angular, somewhat arkosic, in-

durated at certain horizons; interbedded stringers of marl,

gray, sandy, micaceous, fossiliferous at certain levels (mac-

roshells, Ostracods and Foraminifera)_

161

369

Anomalina clementiana at 213-223.

Anomalina pseudopapillosa, glauconite prominent at 322-331.

Ripley Formation:

Marl: gray, sandy, micaceous

41

410

Marl: dark bluish-gray to black, silty, very micaceous, car-

bonaceous, pyritiferous, sideritic, fossiliferous (macroshells,

Ostracods and Foraminifera) --------------------------------------------------------- 59

469

Robulus munsteri at 410-431.

Robulus munsteri, Gaudryina rudita at 431-469.

120

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Thickness (feet)

Pliocene to Recent (undifferentiated) ------------------------------- __________________ 16

Paleocene (Clayton formation) ------------------------------------------ _________________ 171

Upper Cretaceous (Providence sand) ___________

_____ ____ ____________ 182

Upper Cretaceous (Ripley formation) ________ ________________________

100

Depth (feet)
16 187 369 469

Potential Water-Bearing Zones:
Sand: fine to coarse-grained __________________ -----------------------------Sand: fine to coarse-grained ______________________ ---------------------------

14

187

161

369

Location: 5 mi. east of Stockton Owner: No. 1 J. E. Mathews Driller: Winter Hardware Company Drilled: March 1942

CLINCH COUNTY
Well No.: GGS 86 Elev.: 187

Thickness Depth

(feet)

(feet)

No samples

10

10

In Pliocene to Recent (Undifferentiated):

Sand: medium-grained, subrounded; (near bottom of inter-

val) clay, brownish-gray_____________________________________ --------------------------- 10

20

Clay: rather dark-brownish-gray, blocky, sandy, more sandy

with depth --------------------------------------------------------------------------------------- 20

40

Clay: as above but much sandier, light-brown to jet-black, pol-

ished, phosphatic pebbles1 _ __ ____ __ ___ __________ __________________

60

100

Miocene (Undifferentiated):

Clay: pale-yellowish-green, sandy, somewhat phosphatic _____

40

140

Clay: as above but somewhat indurated, tough ________________ _

20

160

Limestone: white to cream, much calcitized, somewhat saccha-

roidal, sandy

__________ ___

___________________________ 20

180

Summary:

No samples _____________________ __________

______ _______

10

10

In Pliocene to Recent (undifferentiated) ______________________________ _________ 90

100

Miocene (undifferentiated) ------- ____ __

____________ 80

180

Limestone

Potential Water-Bearing Zones:

'Reworked from older beds of Miocene age.

20

180

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

121

Remarks:
More copious water supplies may be obtained by drilling deeper (than 180) into the water-bearing, underlying limestones of Oligocene and upper Eocene age.

Location: 17 mi. south of Homerville, Land Lot 200, 12th Land District
Owner: No. 1 Gillican Driller: Georgia Resources Company Drilled: 1940

CLINCH COUNTY
Well No.: GGS 124 Elev.: 187

Thickness Depth

(feet)

(feet)

No samples ___

248

248

In Miocene (Undifferentiated):

Clay: dark-green, blocky, sandy

14

262

No samples ---------------------------------------------------- ____________________

12

274

Sand: fine to coarse-grained, angular, somewhat arkosic, phos-

phatic _____ -------------------------------- ----------------------------- ---------------

51

325

Clay: light-gray, sandy ___

3

328

Limestone: white, dense, sandy ___

22

350

Sand: fine to medium-grained, angular, phosphatic____

10

360

Limestone: white, dense, sandy _________

10

370

Sand: as above, interbedded dolomitic limestone, light-brown,

saccharoidal ----------------------------------------------------------------

75

445

Oligocene (Undifferentiated):

Limestone: cream, nodular, considerably calcitized, fossilifer-

ous (macroshells, echinoid and bryozoan remains, and some

Foraminifera) _

____________________________

75

520

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, fossiliferous (megafossils, echinoid and

bryozoan remains, and Foraminifera)______________________ ______________ 180

700

Asterocyclina sp., Operculinoides sp., Heterostegina sp., Gypsina globula at 520.
Camerina striatoreticulata, Amphistegina pinarensis var. at 690-700.

122

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Dolomitic limestone: light-brown, saccharoidal ___________________ No samples _

Thickness (feet)
23
72

Depth (feet)
723
795

In Middle Eocene: Claiborne Group (Undifferentiated):

Dolomitic limestone: light to dark-brown, saccharoidal, gypsi-

ferous at certain horizons; interbedded limestone, gray to

cream, fossiliferous at certain levels (Foraminifera)_

397

Cribrobulimina- floridana at 862-868.

Limestone: cream to light-brown (latter dolomitic at certain

levels), much calcitized, crystalline, cherty, fossiliferous

(abundant Foraminifera at certain horizons)_

315

1,192 1,507

Summary:

No samples ______________ -----------------------------------------------------------------

In Miocene (undifferentiated) _

Oligocene (undifferentiated) ____

_____________ _

Upper Eocene (Ocala limestone)

__________ _

No samples ___________ ________________ _______________ _______________

In middle Eocene (Claiborne group, undifferentiated)

____ 248 ____ 197
75 203
72 712

248 445 520 723 795 1,507

Limestone ______

Potential Water-Bearing Zones:

255

700

Remarks:
The rocks below depth of 700 are predominantly gypsiferous dolomitic limestones, which yield mineralized water. Wells, therefore, should not be drilled below 700 in this area.

Location: 75 ft. southeast of school building in Ambrose Owner: No. 1 Ambrose School Driller: H. B. Truluck Drilled: September 1951

COFFEE COUNTY
Well No.: GGS 236 Elev.: 310

Thiekness Depth

(feet)

(feet)

Miocene (Undifferentiated): Clay: bluish-gray to red (mottled), sandy, limonitic Sand: fine to medium-grained, angular ________________

20

20

20

40

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

123

Thickness (feet)
Clay: pale-green, blocky, sandy, phosphatic and fossiliferous at depth (macroshells); interbedded sand, fine to mediumgrained, angular ------------------------------------ ___________________ ____ _______________ 385

Black phosphatic pebbles common at 280-310.

Macroshells prominent at 410-425.

Limestone: gray, sandy, fossiliferous (casts and molds of meg-

afossils) __ _______________

___ ---------------------------------------- _________________ 60

Archaias sp. at 425-435.

Depth (feet)
425
485

Miocene (undifferentiated) ___

Summary:

485

485

Potential Water-Bearing Zones:
Sand: fine to coarse-grained ___________________ Limestone _____________________ _

10

410

60

485

Remarks:
Better and more productive water-bearing limestones lie deeper than the total depth (485) of above well.

Location: Southern part of County, about 12 mi. south of Ambrose, in Heabern
Owner: No. 1 Heabern School Driller: H. B. Truluck Drilled: October 1951

COFFEE COUNTY
Well No.: GGS 243 Elev.: 198

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: bluish-gray to red (mottled), sandy, limonitic ________________ _ 20

20

Clay: light-gray, blocky, cherty at certain horizons, sandy,

phosphatic at depth; interbedded sand, fine to coarse-

grained, angular ----------------------------------------- _______________ _

220

240

Light-gray phosphatic pebbles at 130-140.

Black phosphatic pebbles at 190-200.

Dolomitic limestone: light-brown, saccharoidal

40

280

Chert bed __________ --------------

10

290

124

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary: Miocene (undifferentiated) ___________________________

Thickness Depth

(feet)

(feet)

290

290

Potential Water-Bearing Zones:
Sand: fine to coarse-grained _______________ Dolomitic limestone

10

110

40

280

Remarks:
Dolomitic limestone yields mineralized water. The above well should have been drilled deeper in order to obtain water from Oligocene and upper Eocene limestones.

Location: In Nicholls Owner: City of Nicholls Driller: M. M. Gray Drilling Company Drilled: 1955

COFFEE COUNTY
Well No.: GGS 434 Elev.: 1801

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: bluish-gray to red (mottled) sandy, limonitic _

30

30

Sand: fine to coarse-grained, angular, arkosic

40

70

Clay: pale-green, sandy, phosphatic at depth; interbedded

sand, fine to medium-grained, angular_______________ -------------------------- 110

180

Clay: light-gray to pale-green, blocky, sandy, phosphatic___________ 110

290

Limestone: white, dense, crystalline, much calcitized, sandy ______ 30

320

Clay: as above, but somewhat sandier _______________________________ _

30

350

Limestone: white, dense, crystalline, much calcitized, sandy,

phosphatic, fossiliferous (casts and molds of megafossils)______ 20

370

No samples ________________ -------------------------------------------------------------------------- 20

390

Limestone: as above ---------------------------------

10

400

'Average elevation taken from State Highway map.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

125

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: gray to cream to light-brown at depth, rather mas-

sive, nodular, crystalline, somewhat saccharoidal, much cal-

citized, fossiliferous (casts and molds of Gastropods, some

bryozoan remains and Foraminifera)---------------------------------

110

Pyrgo sp. at 400-410. Quinqueloculina sp., Rotalia mexicana var. at 410-420. Dictyoconus sp. 2 at 420-430.

Depth (feet)
510

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: as above, but light-gray and more calcitized at

depth, fossiliferous (bryozoan remains and abundant Fora-

minifera) -----------------------------------------------------------------------------------

90

600

Lepidocyclina sp., Operculinoides floridensis at 510-520. Asterocyclina sp., Operculinoides sp. abundant at 530-540.

Summary:
Miocene (undifferentiated) ________________ Oligocene (undifferentiated) Upper Eocene (Ocala limestone) ______

400

400

110

510

90

600

Limestone

Potential Water-Bearing Zones:

200

600

Location: 200 ft. from north line, 2,000 ft. from east line of Land Lot 275, 1st Land District
Owner: No. 1-A Nina McLean Driller: Carpenter Oil Company Drilled: August 1954

COFFEE COUNTY
Well No.: GGS 445 Elev.: 193

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Sand: fine to coarse-grained, angular, arkosic; interbedded

clay, light-gray to pale-green, sandy, phosphatic and fossil-

iferous at depth (macroshells) ___

______________ _

200

200

'Reworked(?) fossil of middle Eocene age.

126

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickne-ss (feet)

Limestone: white, dense, sandy, phosphatic, fossiliferous at

certain levels (casts and molds of megafossils) _________

90

Depth (feet)
290

Oligocene (Undifferentiated):

Limestone: light-gray, massive, highly calcitized and crystal-

line, somewhat sandy, fossiliferous (some megafossils, bryo-

zoan remains, and Foraminifera) ___ _

110

400

Quinqueloculina sp., Rotalia mexicana var., Gypsina globula1 at 300-310.
White, somewhat soft and granular limestone carrying Lepidocyclina1 sp. at 340-350. Lepidocyclina1 sp. at 380-390.

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, somewhat soft and granular, fossiliferous

(some bryozoan remains and Foraminifera) ; considerable

limestone, as above ____________________________________________________

50

450

Lepidocyclina sp., Robulus arcuato-striatus var., Gypsina globula at 400-410.
Operculinoides floridensis common at 430-440.

Limestone: white, much calcitized, rather granular and loosely

consolidated at depth, very fossiliferous, some macroshells,

bryozoan remains, and abundant Foraminifera______ __ ________________ 125

575

Operculinoides floridensis and Asterocyclina nassauensis common at 500-510.

Limestone: as above; interbedded dolomitic ( ?) limestone,

brown, saccharoidal ______________

100

675

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: cream, much calcitized, granular, cherty at certain

levels, fossiliferous (echinoid and bryozoan remains and

some Foraminifera) _________________________________________ ------------------------------- 155

830

Tallahatta Formation:

Limestone: as above but glauconitic; interbedded brown lime-

stone, saccharoidal, somewhat dolomitized?, glauconitic____________ 85

915

Operculinoides sp., Lepidocyclina sp. at 840-850.

'Reworked(?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

127

Thickness (feet)

Limestone: white to light-gray, rather massive, crystalline,

glauconitic, sandy, fossiliferous (fragments and impressions

of megafossils) __________________________________________________

95

Depth (feet)
1,010

Lower Eocene: Wilcox Group (Undifferentiated):

Indurated sand to white limestone at depth: fine to medium-

grained, subangular grains, coarsely but rather abundantly

glauconitic; interbedded brown limestone, dark-brown, sac-

charoidal, glauconitic; sand, fine to coarse-grained, subangu-

lar _________

--------------------------------------------------------------------------------- 135

Indurated sand: light-gray, fine-grained, glauconitic, mica-

ceous; interbedded beds of clay, greenish-gray, laminated,

micaceous; limestone, dark-gray, dense, crystalline, sandy,

finely glauconitic __

______________________ ________________

85

Paleocene: Midway Group: Clayton Formation:

Limestone: light-gray, somewhat nodular, dense, crystalline, fossiliferous (fragments and molds of Gastropods) _______________ 60

Sand: fine to coarse-grained, subangular, indurated at certain

levels; interbedded limestone, as above__ __ _________ ___ _

230

Upper Cretaceous (Undifferentiated):

Sand: fine to coarse-grained, indurated at certain levels, mi-

caceous, pyritiferous; interbedded marl, gray, silty, some-

what chalky, micaceous, fossiliferous at certain levels (mac-

roshells, Ostracods, and Foraminifera) ____ _

383

Anomalina pseudopapillosa at 1520-1530. Gaudryina rudita at 1670-1680. Loxostoma plaitum at 1680-1690.

1,145 1,230 1,290 1,520
1,903

Summary:

Miocene (undifferrentiated)

290

Oligocene (undifferentiated)

110

In upper Eocene (Ocala limestone)_

----- --- 275

Middle Eocene (Lisbon formation) __

155

Middle Eocene (Tallahatta formation)

180

Lower Eocene (Wilcox group, undifferentiated)_

220

Paleocene (Clayton formation)_

___________________________________ 290

Upper Cretaceous (undifferentiated)_

383

290 400 675 830 1,010 1,230 1,520 1,903

128
Limestone Limestone

GEORGIA GEOLOGICAL SURVEY BULLETIN 70 Potential Water-Bearing Zones:

Thickness Depth

(feet)

(feet)

275

575

155

830

COLQUITT COUNTY

Location: 80ft. south of First Avenue at Water Works in Moultrie
Owner: No. 4 City of Moultrie Driller: Stevens Southern Drilling Company

Well No.: GGS 22 Elev.: 308

Drilled: October 1943

Thickness (feet)
---------------------

Depth (feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, subangular; clay, dark-gray to

black, sandy, lignitic, limonitic_______________________________________________ _ 10

10

Miocene (Undifferentiated):

Sand: fine-grained, phosphatic (finely disseminated) ; some

clay, yellowish-green, somewhat indurated, tough____ __ ______________ 83

93

Clay: dark-green, somewhat indurated, blocky, sandy; inter-

bedded limestone, white to light-brown (latter dolomitized,

saccharoidal), rather massive, sandy______

________________________ 282

375

Limestone: white to light-brown (latter dolomitized, saccha-

roidal), massive, somewhat saccharoidal, sandy____

95

470

Dolomitic limestone: dark-brown, massive, saccharoidaL

25

495

Oligocene (Undifferentiated):

Limestone: light-gray to brown, nodular, crystalline, dense,

much calcitized, fossiliferous (Ostracods and abundant

Foraminifera) ; interbedded dolomitic limestone, dark-

brown, saccharoidal, massive_______ ________________ _________________________ 50

545

Rotalia mexicana var., Asterigerina sp., Lepidocyclina sp. at 495-505.

Upper Eocene: Jackson Group: Ocala Limestone:

Dolomitic limestone: light-brown, saccharoidal, massive ______________ 155

700

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

129

Middle Eocene: Claiborne Group: Lisbon Formation

Thickness (feet)

Limestone: cream, granular, much calcitized, fossiliferous
(macroshells, echinoid and bryozoan remains and Foraminifera) ___ ____ ____ ________________ _______ ________________ ____________________________ 100

Depth (feet)
800

Robulus alato-limbatus, Lenticulina fragaria var., Nodosaria latejugata var., Eponides jacksonensis at 700-720.
Asterocyclina sp. at 760-775.

Summary:

Pliocene to Recent (undifferentiated) __ _

Miocene (undifferentiated) ____

Oligocene (undifferentiated) ____________

Upper Eocene (Ocala limestone) ______

Middle Eocene (Lisbon formation) _

_

____________ _

10

10

485

495

50

545

155

700

100

800

Potential Water-Bearing Zones: Limestone ________ _ ___ ______ .

100

800

Remarks:
Dolomitic limestone yields hard water. The strata of Oligocene age in the above well are composed largely of dolomitic limestone. The underlying limestones of Ocala age constitute the principal source of ground water in this well.

COLQUITT COUNTY

Location: 760 ft. west of east line, 210 ft. north of south line, Land Lot 270, 8th Land District
Owner: No.1 D. G. Arrington Driller: R. T. Adams Drilling Company Drilled: August 1948

Well No.: GGS 170 Elev.: 270
(derrick floor)

Thickness Depth

(feet)

(feet)

No samples ___________

120

120

In Miocene (Undifferentiated):

Clay: pale-green, sandy; interbedded limestone, white, dense,

phosphatic, somewhat dolomitized at certain levels, sandy,

fossiliferous at depth (casts and molds of megafossils)

270

390

Casts and molds of megafossils prominent at 330-340.

130

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness (feet)

Limestone ---------------------------------------------------------------------------------------------- 70

Depth (feet)
460

Upper Eocene: Jackson Group: Ocala Limestone: Dolomitic limestone: dark-brown, saccharoidal

230

690

Middle Eocene: Claiborne Group (Undifferentiated):

Limestone: cream, calcitized and granular, somewhat loosely consolidated, cherty at certain levels________________________________________ 380

Limestone: as above but coarsely glauconitic

130

Operculinoides sp. at 1070-1080.

1,070 1,200

Lower Eocene: Wilcox Group (Undifferentiated):

Marl: light-gray, silty, micaceous, glauconitic with finely disseminated grains ______________________________ ---------------------------------------- 35

Marl: as above but somewhat indurated, sandy, carbonaceous,

micaceous

55

1,235 1,290

Paleocene: Midway Group: Clayton Formation:

Limestone: light-gray to white, dense, crystalline much calci-

tized, coarsely glauconitic, fossiliferous (macroshells and

some Foraminifera) _

30

Pseudophragmirw stephensoni at 1290-1300. Operculinoides catenula at 1320-1330.

Indurated sand: gray, dense, crystalline, somewhat argillace-

ous, glauconitic (finely disseminated), fossiliferous at cer-

tain levels (macroshells and Foraminifera)____ ______________

130

Limestone: gray, dense, crystalline, coarsely glauconitic, fossiliferous (megafossils and some Foraminifera)_______________________ 160

Limestone: as above, but cherty__ _

70

1,320
1,450 1,610 1,680

Cretaceous (Undifferentiated):
Marl: gray, silty, micaceous, chalky, pyritiferous, fossiliferous at certain levels (megafossils, Ostracods, and Foraminifera) __________________________________________________________________ ---------------------------- 1,120
Globotruncana sp., Gaudryina sp., Guembelina sp. at 16801690. Kyphopyxa ehristneri at 2360-2370. Vaginulina texana at 2580-2590.

2,800

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

131

Thickness (feet)

Sand: fine to coarse-grained, somewhat indurated at certain

horizons, glauconitic, phosphatic, fossiliferous (macro-

shells); interbedded clay or shale, greenish-gray, somewhat

fissile, micaceous

220

Depth (feet)
3,020

Sand: coarse-grained, angular, arkosic; interbedded clay,

dark-gray, laminated, micaceous

280

Shale: dark-gray, fissile, micaceous, carbonaceous__

135

Shale: as above; interbedded sand, medium-grained, glaucon-

itic, fossiliferous (macroshells) _____

_______ __ _______ ____________ _ 110

Clay: greenish-gray to purple, sandy, micaceous; interbedded

sand, coarse-grained, angular, arkosic; and limestone, gray,

crystalline, glauconitic

______________________________________________ 1,364

3,300 3,435 2,545
4,909

Summary:

No samples ---------

______________ _

In Miocene (undifferentiated)

Oligocene (undifferentiated) ___

Upper Eocene (Ocala limestone) ___________________________

Middle Eocene (Claiborne group, undifferentiated) __________

Lower Eocene (Wilcox group, undifferentiated)

Paleocene (Clayton formation) __

------

Cretaceous (undifferentiated) __

-

120 270
70 230 510
90 390 ---3,229

120 390 460 690 1,200 1,290 1,680 4,909

Potential W ater~Bearing Zones: Limestone ____________________________________

70

460

Remarks:
Except for Oligocene limestones, no good aquifers were observed in above well. All sands in the deeply buried Cretaceous strata doubtless contain salt water and are not suitable as sources of potable ground water.

132

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

COLQUITT COUNTY

Location: Southeastern part of city, 0.6 mi. south of Georgia Northern R.R., east side of Second St., near concrete reservoir in Moultrie
Owner: No. 5 City of Moultrie Driller: Stevens Southern Drilling Company Drilled: 1948

Well No.: GGS 175 Elev.: 317

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: mottled, sandy, limonitic____________ _

50

50

Clay: yellowish-green, sandy; interbedded sand, fine to coarse-

grained, angular, arkosic_;--

_____________________________ _

200

250

Limestone: white, dense, sandy, dolomitized at certain levels;

interbedded clay and sand, as above _

210

460

Oligocene (Undifferentiated):

Limestone: cream, nodular, much calcitized, fossiliferous

(casts and molds of molluscan shells, echinoid and bryozoan

remains, and Foraminifera); interbedded tongues of par-

tially dolomitized limestone, light-brown, somewhat saccha-

roidal, massive, fossiliferous (Foraminifera including abun-

dant Miliolids) _

80

Rotalia mexicana var., Asterigerina subacuta at 460-470.

Upper Eocene: Jackson Group: Ocala Limestone: Dolomitic limestone: dark-brown, saccharoidal, unfossiliferous 160

Middle Eocene: Claiborne Group: Lisbon Formation:
Limestone: cream, somewhat nodular, much calcitized, granular, fossiliferous (bryozoan remains and some Foraminifera) 300
Lepidocyclina sp. common at 700-710.

540 700 1,000

Summary:

Miocene (undifferentiated) __________________________________________

460

Oligocene (undifferentiated) ___

80

Upper Eocene (Ocala limestone) _________________________________ _ ---------------- 160

Middle Eocene (Lisbon formation) ___________________________________ _

300

Limestone

Potential W ater~Bearing Zones: 300

460 540 700 1,000
1,000

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

133

Remarks:
Because the dolomitic limestone contains gypsum and yields hard water, it is not a good source of ground water. The best available aquifer in this well appears to be the interval 700-1000.

Location: Approximately 1 mi. north of Highway 12 on top of high hill, in Grovetown
Owner: No. 1 City of Grovetown Driller: Virginia Supply and Well Company Drilled: 1951

COLUMBIA COUNTY
Well No.: GGS 264 Elev.: 500

Thickness Depth

(feet)

(feet)

Upper Eocene: Jackson Group: Barnwell Formation:

Sand: argillaceous, tan, fine to medium-grained, limonitic;

inclusions of kaolin, white, micaceous, somewhat sandy

40

40

Upper Cretaceous: Tuscaloosa Formation: Clay (or kaolin): gray, sandy_ Sand: yellow, fine to coarse-grained Kaolin: white, abundantly micaceous, sandy _

40

80

8

88

47

135

Basement Complex (Undifferentiated): Clay: yellow, very sandy, garnet and hornblende crystals _ Crystalline rock ___

21

156

144

300

Summary:
Upper Eocene (Barnwell formation) ________ Upper Cretaceous (Tuscaloosa formation) Basement complex (undifferentiated) ______ _

40

40

95

135

165

300

Potential Water-.Searing Zones:

Sand: fine to coarse-grained _______________________

Crystalline rock (fractures in)___

_______________________________

8

88

144

300

134

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: In Lenox Owner: City of Lenox Driller: Layne-Atlantic Company Drilled: June 1946

COOK COUNTY
Well No.: GGS 25 Elev.: 3001

Thickness (feet)

Depth (feet)

No samples ----------------------------------------------------------------------------------------

25

25

In Miocene (Undifferentiated):

Sand: medium to coarse-grained, subangular, somewhat limon-

itic ________________________ --------------------------------------------- ___________________________ 7

32

Clay: mottled, sandy, limonitic_____

23

55

No samples __ -----------------------------------

6

61

Clay: yellowish-green, very sandy___

8

69

Clay: light-gray, somewhat indurated, tough, sandy__

8

77

No samples ___________ ---------------------------------------

25

102

Clay: as above; some limestone, white, sandy, cherty_

21

123

Limestone: white to cream at depth, sandy_

154

277

No samples_

17

294

Limestone: as above, but saccharoidal, somewhat dolomitized

at certain levels, massive_______

_______________ _

?

294

No samples -------------------------------------------- ___________________________________

24

318

Limestone: as above; fragments of limestone, gray, dense,

nodular, somewhat sandy___________________ ____________ ___

____________ _ 40

358

No samples

41

399

In Oligocene (Undifferentiated):

Limestone: cream, nodular, much calcitized, rather massive,

fossiliferous (bryozoan remains and increasing number

(with increased depth) of Foraminifera)_

92

491

Lepidocyclina cf. L. mantelli at 399. Dictyoconus2 sp., Coskinolina2 sp. at 429. Asterocyclina2 sp. common, Gypsina globula2 at 491

1Average elevation taken from State Highway map. 'Reworked ( ? ) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

135

Summary:

No samples __

______ _______ ____ _ _______________

In Miocene (undifferentiated) _________________________________ No samples ___________________________________________________________________

In Oligocene (undifferentiated) ________________________________

Thickness Depth

(feet)

(feet)

25

25

333

358

41

399

92

491

Limestone __

Potential Water~Bearing Zones:

173

491

COOK COUNTY

Location: In Adel

Well No.: GGS 39

Owner: No. 4 City of Adel

Elev.: 240

Driller: Layne-Atlantic Company

Drilled: June 1946

Thickness Depth
-------------------------------------------------(-fe-e-t)- (feet)

No samples ________________________________

15

15

In Miocene (Undifferentiated):

Clay: mottled, very sandy, limonitic ____

55

70

No samples ______ --------------------------------------------------

10

80

Clay: yellowish-green, blocky, sandy, phosphatic; interbedded

limestone, light-gray to white, dense, somewhat saccharoidal,

sandy; sand, fine-grained, angular, phosphatic (finely dis-

seminated) _________ _________________________________

85

165

Gray, polished, phosphatic pebbles prominent at 80. No samples ___________________________________ _

20

185

Dolomitic limestone: light-brown, extremely dense, crystalline,

somewhat sandy; some limestone as above_________________________________ ?

185

No samples

24

209

In Oligocene (Undifferentiated):

Limestone: light-gray to cream at depth, nodular, much cal-

citized, rather dense, cherty, fossiliferous (bryozoan re-

mains and some Foraminifera)_

_______________________________ 61

270

Quinqueloculina sp., Dictyoconus1 sp. at 209-209%.
- Quinqueloculina sp., Rotalia mexicana var. at 270.
'Reworked(?) fossil of middle Eocene age.

136

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Thickness (feet)

No samples _ ----------------------------------------------------- _--------------------------------- 15

In Miocene (undifferentiated) _____________ -------------------------------------------------- 170

No samples _------------------------------------------------- ______________________

24

In Oligocene (undifferentiated)----------------------------

61

Depth (feet)
15 185 209 270

Potential Water~Bearing Zones: Limestone ________ ----------------------------------------------------------

61

270

Remarks: Sample intervals too large for accurate determination of formational tops.

COOK COUNTY

Location: 6 mi. west of Adel, 2 mi. south of Adel-Moultrie Well No.: GGS 118

Highway, Land Lot 338, 9th Land District

Elev.: 224 1

Owner: No. 1 D. F. Bruton

Driller: W. B. Graham

Drilled: 1946

Thicknees (feet)
-------------------------

Depth (feet)

Miocene (Undifferentiated):

Clay: mottled, sandy, limonitic___ _

60

60

Clay: gray to yellowish-green, sandy; interbedded sand, fine

to coarse-grained, angular________________________

_______________ 80

140

Limestone: white, dense, crystalline, sandy; interbedded clay,

yellowish-green, sandy ____ ____________________ __ ____ ___ ______ _

50

190

Oligocene (Undifferentiated):

Limestone: light-gray to cream, nodular, much calcitized, fos-

siliferous (bryozoan remains and some Foraminifera) ___ _

90

280

Rotalia mexicana var. at 190-200. Dictyoconus2 sp. at 270-280.

Summary:

Miocene (undifferentiated) _______ -------------------------------

190

190

Oligocene (undifferentiated) _ -------------------------------------- _________________

90

280

1Average elevation taken from State Highway map. 'Reworked ( ? ) fossil of middle Eocene age.

Limestone -

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

137

Potential W ater~Bearing Zones:

Thickne,gs Depth

(feet)

(feet)

90

280

Samples of poor quality.

R~marks:

Location: In Adel Owner: No. 5 City of Adel Driller: Layne-Atlantic Company Drilled: June 1946

COOK COUNTY
Well No.: GGS 122 Elev.: 246

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: mottled, very sandy, limonitic __________________________________

93

93

Clay: yellowish-green, blocky, sandy; interbedded limestone

at depth, white, dense, sandy; beds of sand, fine to coarse-

grained, angular ______________________ ---------------------------------------------------- 107

200

In Oligocene (Undifferentiated):

Limestone: light-gray, nodular, dense, much calcitized, fossil-

iferous (some bryozoan remains and Foraminifera) __

70

270

Rotalia mexicana var. at 231.

Summary:

Miocene (undifferentiated) __ ------------------------------------ ---------------------------- 200

200

In Oligocene (undifferentiated)__________________________________________________

70

270

Limestone

Potential W ater~Bearing Zones:

70

270

Samples of poor quality.

Remarks:

138

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: In Cordele Owner: No. 3 City of Cordele Driller: Layne-Atlantic Company Drilled: May 1948

CRISP COUNTY
Well No.: GGS 155 Elev.: 330

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: gray to tan to red (mottled), very sandy____________________________ 8

8

Clay: pale yellowish-green with red streaks (mottled) , blocky,

sandy ________________________________ --------------------------------- ----------------------------- 10

18

Sand: fine to coarse-grained, subangular, arkosic________________

11

29

Clay: light-brown, somewhat indurated, tough, very sandy

6

35

Clay: pale yellowish-green to dark-green with red streaks

(mottled) at depth, blocky, sandy______________

54

89

Sand: fine to coarse-grained, subangular, arkosic __________ _

4

93

Oligocene (Undifferentiated):

Limestone: gray, extremely dense and crystalline, cherty, fos-

siliferous (some bryozoan remains and Foraminifera)

3

96

Rotalia mexicana var. at 93-96.

Limestone: yellow, nodular, somewhat calcitized, sandy, fos-

siliferous (as above) __________________________

67

163

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, much calcitized, saccharoidal, fossiliferous,

(bryozoan remains and some Foraminifera)___________________________ _ 137

300

Operculinoides sp. at 173-248. Lepidocyclina sp. at 248-270. Lepidocyclina sp., Gypsina globula, Camerina striatoreticulata at 270-300.

Middle Eocene: Claiborne Group: Lisbon Formation:

Marl: light-gray, micaceous, glauconitic, fossiliferous (Fora-

minifera); interbedded sand, fine to coarse-grained, angu-

lar, phosphatic, glauconitic

______________________________________________ _ 71

371

Asterigerina sp., Discorbis yeguaensis at 300-330. Asterigerina lisbonensis, Cibicides westi at 330-371.

Limestone: gray, dense, crystalline, sandy, fossiliferous at

depth (a coquina)___ ________________________ ___________________________________

44

415

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

139

Tallahatta Formation:

Sand: fine to coarse-grained, angular, phosphatic, fossilifer-

ous (abundant macroshells)_________ _____________________________________

78

493

Sand: fine to coarse-grained, angular, phosphatic __________________ _ 47

540

In Lower Eocene: Wilcox Group (Undifferentiated):

Clay: light-gray, silty, micaceous, carbonaceous_

44

584

Clay: light-brown, somewhat indurated and tough; sand, fine

to coarse-grained, abundantly glauconitic ______________

91

675

Paleocene: Midway Group: Clayton Formation:

Limestone: light-gray, extremely dense, crystalline, sandy,

coarsely glauconitic, fossiliferous (some bryozoan remains,

casts and molds of megafossils, and some Foraminifera) ;

clay, black, fissile, carbonaceous__

_______________ 110

785

Upper Cretaceous: Providence Sand: Sand: fine-to coarse-grained, subangular-____ _

31

816

Summary:

Miocene (undifferentiated) ___

93

93

Oligocene (undifferentiated) _

70

163

Upper Eocene (Ocala limestone)____ _________ ____________________ ______________ 137

300

Middle Eocene (Lisbon formation)

115

415

Middle Eocene (Tallahatta formation) ____________________

125

540

In lower Eocene (Wilcox group, undifferentiated) ___________________________ 135

675

Paleocene (Clayton formation)

__________________________________ _ 110

785

Upper Cretaceous (Providence sand)

_______________ _

31

816

Potential Water-Bearing Zones:
Limestone Sand: fine to coarse-grained Sand: fine to coarse-grained______ Sand: fine to coarse-grained__________________ Sand: fine to coarse-grained______________

52

300

125

540

91

675

11

707

31

816

140

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 0. 7 mi. south of Marshall near county road Owner: No.1 H. C. Wade Driller: H. B. Truluck

CRISP COUNTY
Well No.: GGS 216 Elev.: 271

Thickness Depth

(feet)

(feet)

No samples ___

10

10

In Residuum:

Clay: mottled, sandy, lignitic, and fragments of residual

limestone at depth__________________________________________________________________

60

70

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: yellowish to white, fossiliferous (macroshells,

echinoid and abundant bryozoan remains, and Foraminifera)__ 90

160

Siphonina jacksonensis at 70-110. Operculina mariannensis at 140-150. Lepidocyclina sp. abundant at 150-160.

Summary:
No samples __________________________ In residuum _________________________________ Upper Eocene (Ocala limestone) _________________________

10

10

60

70

90

160

Limestone

Potential Water~Bearing Zones:

70

160

CRISP COUNTY

Location: In Arabi

Well No.: GGS 225

Owner: No. 1 Marvin McKinney

Elev.: 449

Driller: H. B. Truluck

Thickness Depth

(feet)

(feet)

---------------------------------------------------------------

No samples_

so

80

In Miocene (Undifferentiated): Clay: yellowish-green to red (mottled), sandy, arkosic__ Sand: medium to coarse-grained, angular________

20

100

15

115

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

141

Thickness (feet)
Clay: yellowish-green, sandy; fragments of limestone, white,
sandy - ------------------------------------------------------------------------------------------------ 35

Sand: fine to coarse-grained, angular, and fragments of resid-

ual limestone ______________

------------------------------------- _____________________ 20

Depth (feet)
150
170

Oligocene (Undifferentiated): Limestone: white, fossiliferous (Foraminifera) _________________
Lepidocyclina sp., Asterigerina subacuta at 170-180. Rotalia mexicana var. at 180-200.

30

200

Summary:

No samples------ ------------------ ______________

------------------------------------ 80

80

In Miocene (undifferentiated) ________________________ ------------------------------------ 90

170

Oligocene (undifferentiated) ____

_____________________ _________________ 30

200

Potential Water-Bearing Zones:

Sand: fine to coarse-grained______ __

--------------------------------

15

115

Sand: fine to coarse-grained_______________________________ ----------------------------------- 20

170

Limestone ----- ______ __________

_____________________ -------------------------------------- 30

200

Location: Veterans Memorial (State) Park Owner: No.2 Veterans Memorial (State) Park Driller: Layne-Atlantic Company Drilled: May 1951

CRISP COUNTY
Well No.: GGS 226 Elev.: 246

Thickness Depth

(feet)

(feet)

Residuum:

Clay: olive-green to tan, limonitic, sandy, sandier with depth

46

46

Upp,er Eocene: Jackson Group: Cooper Marl:

Marl: cream, blocky, fossiliferous (Foraminifera) _

20

66

Siphonina jacksonensis, Eponides jacksonensis, Eponides cocoaensis, Globulina gibba var., Cibicides lobatulus at 46-51.
Robulus alato-limbatus, Bulimina jacksonensis, Uvigerina jacksonensis, Marginulina cocoaensis, Siphonina jacksonensis, Eponides jacksonensis, Eponides cocoaensis, Cibicides mississippiensis at 51-61.

142

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Ocala Limestone:

Limestone: cream, coarsely but sparsely glauconitic, fossil-

iferous (echinoid and abundant bryozoan remains, and

Foraminifera) ----------------------------------------------------- -------------------

64

Aste1ocyclina sp., Operculina mariannensis, Camerina striatoreticulata at 91-101.

Depth (feet)
130

Summary:
Residuum Upper Eocene (Cooper Marl) Upper Eocene (Ocala limestone) __________________________________________

46

46

20

66

64

130

Limestone

Potential Water-Bearing Zones:

63

130

CRISP COUNTY

Location: 0.5 mi. north of Cordele, about 0.25 mi. northeast Well No.: GGS 245

of State Farmers' Market

Elev.: 301

Owner: No.1 W. D. Taunton

Driller: H. B. Truluck

Drilled: October 1951

Thickness Depth

(feet)

(feet)

-------------------------------------------------------------

Residuum:

Sand: medium to coarse-grained, angular, fragments of lime-

stone at depth_________________

--------------------------------

25

25

Clay: purple, sandy__________

15

40

Oligocene (Undifferentiated):

Limestone: cherty, fossiliferous, at certain levels__________________________ 25

65

Rotalia mexicana var., Quinqueloculina sp. at 40-50.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, fossiliferous (some Foraminifera) __________ _______ 25

90

Siphonina jacksonensis, Gypsina globula at 70-80. Asterocyclina sp. at 80-90.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

143

Summary:

Residuum _________________________ ----------------

----------------------

Oligocene (undifferentiated) ______________________ ----------------------------------

Upper Eocene (Ocala limestone) --------------------------------------------------

Thickness (feet)
40 25 25

Depth (feet)
40 65 90

Limestone -

Potential Water-Bearing Zones:

40

90

Location: 3 mi. southeast of Cordele Owner: No.1 Thomas Clements Driller: H. B. Truluck Drilled: November 1951

CRISP COUNTY
Well No.: GGS 249 Elev.: 317

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Sand: fine to medium-grained, angular___ _

10

10

Clay: tan to purple (mottled), sandy, fragments of residual

limestone at depth______

_________________ _______________________ __________________ 100

110

Sand: fine to coarse-grained, angular, and fragments of resid-

ual limestone ----------------------------- ____________________ __ _______________

10

120

Oligocene (Undifferentiated):

Limestone: white, dense, crystalline, sparingly fossiliferous

(echinoid and bryozoan remains, and Foraminifera) ___

40

160

Argyrotheca sp. at 130-140. Lepidocyclina rnantelli at 150-160.

Limestone: yellow, crystalline, highly calcitized, saccharoidal,

dense, fossiliferous (macroshells, echinoid and bryozoan re-

mains, and some Foraminifera)_______ __ __________ ___________ ________________ 40

200

Lepidocyclina sp. at 170-180.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, soft, rather porous, fossiliferous (echinoid

and bryozoan remains, and Foraminifera) ___________________ _______________ 20

220

Carnerina striatoreticulata, Operculina rnariannensis at 200220.

144

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Limestone: cream, somewhat calcitized, fossiliferous (abun-

dant bryozoan remains and some Foraminifera) __________________

10

Operculina mariannensis at 220-230.

Depth (feet)
230

Summary:

Miocene (undifferentiated) __ ___________________________ __________________________ 120

120

Oligocene (undifferentiated) __________ ------------------------------------------------------ 80

200

Upper Eocene (Ocala limestone) ______________ ------------------------ ______________ 30

230

Potential Water-Bearing Zones:
Sand: fine to coarse-grained______ Limestone ________ ----------------------------

10

120

110

230

Location: At Hannah Branch on Lake Blackshear, southwest of Cordele
Owner: No. 1 Earle White Driller: H. B. Truluck Drilled: November 1951

CRISP COUNTY
Well No.: GGS 250 Elev.: 237

Thickness Depth

(feet)

(feet)

Residuum:

Sand: fine to medium-grained, angular; clay, mottled, sandy,

and fragments of residual limestone.... . ________ .....

10

10

Clay: tan to olive-green, limonitic, very sandy, and fragments

of residual limestone_______________________________________________ ---------------------- 30

40

Clay: dark-brown to black, lignitic, sandy, limonitic, and frag-

ments of residual limestone..

____ _________ 10

50

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white to cream, porous, fossiliferous (macroshells,

echinoid and abundant bryozoan remains, Ostracods, and

Foraminifera)

______ -------------------------------------------------------

60

110

Eponides jacksonensis, Operculina mariannensis at 50-60. Lepidocyclina sp. common at 80-90.

Limestone: yellow, dense, much calcitized, very sandy_______

20

130

Middle Eocene: Claiborne Group: Gosport(?) Sand:

Sand: fine to coarse-grained, somewhat indurated, angular ____

35

165

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

145

Lisbon Formation:

Thickness (feet)

Limestone: light-gray, rather dense, calcitized, sandy, glau-

conitic, fossiliferous (macroshells, echinoid and bryozoan

remains); interbedded marl, light-gray, glauconitic, fossil-

iferous (macroshells, echinoid and bryozoan remains, and

Foraminifera); sand, fine to medium-grained, angular,

phosphatic, fossiliferous (a coquina at certain levels) __ _

75

Cibicides westi at 170-180. Cibicides pse1tdoungerianus var. lisbonensis at 200-210.

Depth (feet)
240

Summary:
Residuum Upper Eocene (Ocala limestone) __ Middle Eocene (Gosport (?) sand) __ Middle Eocene (Lisbon formation) __

50

50

80

130

35

165

75

240

Potential Water-Bearing Zones:
Limestone _ Sand: fine to coarse-grained______ __ __________________ Sand: fine to coarse-grained__

60

110

35

165

20

240

CRISP COUNTY

Location: 5 mi. southeast of Cordele

Well No.: GGS 251

Owner: No.1 W. L. Wells

Elev.: 361

Driller: H. B. Truluck

Drilled: "November 1951

Thickness (feet)
------------------------------------------

Depth (feet)

Miocene (Undifferentiated):

Clay: yellowish-green to red to purple (mottled), somewhat

blocky, sandy, limonitic; interbedded sand, fine to coarse-

grained, angular ______________ __________________________________________________

50

50

Limestone: white, rather dense, somewhat saccharoidal, sandy,

cherty; interbedded clay, olive-green to tan (somewhat mot-

tled), very sandy_____

_______________________________________ _

120

170

In Oligocene (Undifferentiated): Limestone: white to cream, somewhat recrystallized and sac-

146

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
charoidal, more saccharoidal with depth, cherty, fossiliferous (echinoid and bryozoan remains and some Foraminifera) 80
Rotalia mexicana var., Reussella byramensis, Nonion sp. at 170-180.
Coskinolina1 sp., Rotalia mexicana var. at 180-190.

Depth (feet)
250

Summary:

Miocene (undifferentiated) _________________

170

170

In Oligocene (undifferentiated) ________________ -------------------------------------------- 80

250

Limestone

Potential Water-Bearing Zones:

70

250

Location: In eastern part of Cordele Owner: No. 4 City of Cordele Driller: Layne-Atlantic Company Drilled: October 1954

CRISP COUNTY
Well No.: GGS 390 Elev.: 316

Thickness Depth'

(feet)

(feet)

Residuum:

Clay: bluish-gray to yellowish-green to brick-red (mottled),

sandy, limonitic, and fragments of residual limestone

20

20

No samples ____________________________________________

10

30

Clay: dark-brown, lignitic, sandy, somewhat indurated and

residual limestone ______________ ----------------------------------- ____________________ 5

35

Oligocene (Undifferentiated):

Limestone: white, nodular, saccharoidal, much calcitized, fos-

siliferous (some echinoid and bryozoan remains, and Fora-

minifera) ____ ___________________________ ______

_______________________________ 20

55

Pyrgo sp., Quinqueloculina sp. at 35-45.

Limestone: somewhat yellowish, dense, crystalline, saccharoidaL 26

81

Limestone: as above _

29

110

1Reworked ( ? ) fossil of middle Eocene age. 2Depths below 635 feet were picked from electric log.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

147

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: as above, but more fossiliferous (bryozoan remains

and "larger Foraminifera")_____

_______________ 10

120

Lepidocyclina sp. and Gypsina globula common at 110-120.

Limestone: light-gray to white, dense, crystalline, highly cal-

citized, massive, fossiliferous (casts and molds of megafos-

sils, echinoid and bryozoan remains, and Foraminifera) _

30

150

Lepidocyclina sp. at 120-130.

Limestone: light-gray, cream and sandy at depth, somewhat

nodular, porous, calcitized, fossiliferous (echinoid and

abundant bryozoan remains, some Ostracods and Foramini-

fera) _________________________________ --------- __

_______________________ 90

240

Lepidocyclina sp., Operculina mariannensis, Eponides jacksonensis at 170-180.
Camerina striatoreticulata at 200-210.

Middle Eocene: Claiborne Group: Gosport(?) Sand: Sand: fine to coarse-grained, angular

15

255

Lisbon Formation:

Limestone: gray, dense, somewhat crystalline, massive, sandy,

glauconitic, fossiliferous (casts and molds of megafossils);

indurated sand, fine to coarse-grained, angular, glauconitic,

phosphatic______________________

--------------

-------------- 25

280

Nonion advena, Cibicides westi at 250-260.
Gyroidina soldanii var., Valvulineria jacksonensis var., Cibicides americanus var. antiquus, Cibicides westi at 270280.

Marl: gray, somewhat indurated, silty, glauconitic, fossilifer-

ous (macroshells, echinoid and bryozoan remains, Ostracods,

and Foraminifera) ___________________________ ---------------------

30

310

Limestone: gray, dense, sandy, glauconitic, fossiliferous (mac-

roshells, and Foraminifera)_

______________________________ 26

336

Tallahatta Formation:
Sand: fine to coarse-grained, subangular, phosphatic, fossiliferous (common to abundant coquina); interbedded marl,

148

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
gray, silty, glauconitic, micaceous, fossiliferous (macroshells, echinoid and bryozoan remains, Ostracods, and Foraminifera) ________ -------------------------------------- ------------------------------------------- 194
Asterigerina lisbonensis at 390-400.
Macroshells common to abundant at 380-410.

Depth (feet)
530

Lower Eocene: Wilcox Group (Undifferentiated):

Marl: dark-gray, silty, micaceous, carbonaceous, glauconitic,

fossiliferous (macroshells, Ostracods, and Foraminifera) ________ 50

580

Valvulineria scrobiculata, Robulus cf. R. wilcoxensis, Globulina gibba, Cibicides blanpiedi, Cibicides howelli, Anomalina sp. at 560-570.

Sand: fine to coarse-grained, angular, abundantly glauconitic,

green-tinted quartz grains; some marl, as above; limestone,

gray, crystalline, coarsely glauconitic, sandy________________

10

590

Clay: dark-gray, silty, carbonaceous, micaceous, pyritiferous______ 15

605

Sand: fine to medium-grained, subangular, glauconitic; inter-

bedded clay, as above_______________________ ________________________________________ 30

635

Sand: fine-grained, somewhat indurated, glauconitic

13

648

Paleocene: Midway Group: Clayton Formation:

Clay: black, fissile, carbonaceous, micaceous, fossiliferous

(Foraminifera) _____________________ ___________________________

___________________ 10

658

Eponides lotus, Discorbis sp., Cibicides howelli at 640-650.

Limestone: gray, crystalline, glauconitic, sandy, fossiliferous

(macroshells, bryozoan remains, and some Foraminifera) ________ 5

663

Eponides lotus, Cibicides newmanae at 650-660.

Clay: dark-gray, silty, carbonaceous, micaceous; limestone, as

above (probably "cave.")___

_____________________________________ _

17

680

Robulus midwayensis at 660-670.

Summary:

Residuum _____________________________ ------------------------------------------------------------------- 35

35

Oligocene (undifferentiated) ----------------------------------------------------------- 75

110

Upper Eocene (Ocala limestone)---------------------------------------------------------- 130

240

Middle Eocene (Gosport (?) sand)------------------------------------------------------ 15

255

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

149

Thickness (feet)
Middle Eocene (Lisbon formation)---------------------------------- -------------- 81 Middle Eocene (Tallahatta formation)-------------------------------------------------- 194 Lower Eocene (Wilcox group, undifferentiated)________________________________ 118
Paleocene (Clayton formation)--------------------------------------------------------------- 32

Depth (feet)
336 530 648
680

Potential Water-Bearing Zones:

Limestone ----------------------------------- --------------------------------------------------

205

240

Sand: fine to coarse-grained________________________________ ---------------------------------- 15

255

Sand: fine to coarse-grained__________________________ _________________ _________________ 194

530

Sand: fine to coarse-grained________ ___________________

___________________ 10

590

DECATUR COUNTY

Location: 6 mi. northwest of Bainbridge, at U.S. Basic Well No.: GGS 49

Flying School

Elev.: 135

Owner: No.3 U.S. (War Department) Basic Flying School

Driller: Layne-Atlantic Company

Drilled: July 1942

Thickness Depth

(feet)

(feet)

No samples ---------------------------------------------------------------------------------

190

190

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream to light-brown at depth, much calcitized,

somewhat saccharoidal, fossiliferous (macroshells, echinoid

and bryozoan remains and Foraminifera)_________________________________ 105

295

Operculinoides sp., Amphistegina pinarensis var. at 190. Gypsina globula, Operculina mariannensis, Lepidocyclina sp. at 222. Amphistegina pinarensis var. common, Lepidocyclina sp. at 285. Lepidocyclina sp. common at 287.

No samples _________________

18

313

In Middle Eocene: Claiborne Group: Lisbon Formation:

Dolomitic limestone: light-gray, saccharoidal and crystalline_

14

327

Limestone: light-gray to white, very dense, much calcitized,

coarsely glauconitic, fossiliferous (macroshells, bryozoan re-

mains, and Foraminifera) _____________________________________________________________ 12

339

Limestone: light-gray, granular, glauconitic with finely dis-

seminated grains, very sandy, fossiliferous (some macro-

shells, and bryozoan remains)_

___ __ ___ ____ _______ ____ ____ ____ _ 51

390

150

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Indurated sand: light-gray to pale-yellowish-green, fine to medium-grained, somewhat argillaceous, glauconitic (finely disseminated grains), fossiliferous (macroshells) ______________________ 17
Marl: pale-yellowish-green, sandy, glauconitic, somewhat indurated, fossiliferous (Ostracods and Foraminifera)________________ 10
Cibicides westi at 407.

Depth (feet)
407
417

Summary:

No samples ________

___________________________ _

In upper Eocene (Ocala limestone)__________ ____ _

______________ _

No samples ---------------------------------------------------- ______ ----------------------In middle Eocene (Lisbon formation) -------------------------------------

190

190

105

295

18

313

104

417

Limestone

Potential Water-Bearing Zones:

105

295

Location: 6 mi. northwest of Bainbridge, at U.S. Basic Flying Field
Owner: No. 1 (Test Hole) Basic Flying Field Driller: Layne-Atlantic Company

DECATUR COUNTY
Well No.: GGS 57 Elev.: 135

Thickness Depth

(feet)

(feet)

Residuum:

Clay: bluish-gray to pink to purple (mottled), sandy, limonitic_ 20

20

Sand: fine to coarse-grained, subangular; some limestone,

white, much calcitized and crystalline _________________________________ _ 35

55

No samples ______

60

115

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white to cream to light-brown (latter at depth),

much calcitized and crystalline, fossiliferous at certain levels

(bryozoan remains and Foraminifera) ____________________

155

270

Gypsina globula at 115. Amphistegina pinarensis var. at 169. Lepidocyclina sp. common at 195.
No samples_

20

290

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

151

In Middle Eocene: Claiborne Group: Lisbon Formation:

Thickness (feet)

Depth (feet)

Limestone: white to light-gray, somewhat nodular, dense,

massive, coarsely glauconitic, fossiliferous (macroshells and

bryozoan remains) _____

----------------------------------------

16

306

Dolomitic limestone: light-gray, saccharoidal, glauconitic_

21

327

Limestone: light-gray to white, massive, coarsely glauconitic,

sandy, fossiliferous (bryozoan remains and some Foramini-

fera)

____________________________

___________________________ 26

353

Limestone: gray, dense, crystalline, cherty, glauconitic (finely

disseminated grains) _

__ __________________ ____ ________

47

400

Marl: pale-yellowish-green, somewhat indurated and tough,

softer at depth, somewhat granular, glauconitic (finely dis-

seminated grains), micaceous, fossiliferous (some Foramini-

fera at certain levels)_

_ ____________

30

430

Cibicides westi at 400.

Limestone: cream, calcitized and granular, loosely consoli-

dated, fossiliferous (a coquina and some Foraminifera)_

5

435

Limestone: yellowish-green, argillaceous, dense, sandy, coarse-

ly glauconitic, fossiliferous (fragments, casts and molds of

megafossils) ; interbedded marl, yellowish-green, silty, fos-

siliferous (Foraminifera at certain levels)

33

468

Asterigerina lisbonensis at 458.

Sand: somewhat indurated at certain levels, fine to coarse-

grained, subangular, coarsely glauconitic, fossiliferous

(macroshells, bryozoan remains, Ostracods, and Foramini-

fera at certain levels)_

18

486

Eponides mexicanus, Gyroidina soldanii var., Alabamina atlantisae, Discorbis yeguaensis, Cibicides americanus var.,
Cibicides danvillensis, Cibicides pseudoungerianus var., Cibicides lobatulus, Asterigerina lisbonensis at 476.

Limestone: gray to cream, rather massive, sandy, coarsely

glauconitic, fossiliferous (a coquina)_

9

495

Tallahatta Formation:

Sand: fine to coarse-grained, subangular; interbedded clay,

dark-green to mottled, sandy, micaceous ____ _

540

Glauconite very abundant at 495.

1,035

152

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Summary:

Residuum

___________________________

______________ 55

No samples ______ ---------------------------------------

________________________ --------------- 60

In upper Eocene (Ocala limestone) ______________ -------------------------- -------------- 155

No samples ---------------------------------------------------------------------------------------

20

In middle Eocene (Lisbon formation)________________________ ___________________ 205

In middle Eocene (Tallahatta formation) _____ _

540

Deptl. (feet)
55 115 270 290 495 1,035

Potential Water-Bearing Zones:

Limestone

---------------------------------------

Sand: fine to coarse-grained___________________

155

270

540 1,035

Remarks:
It is thought that by careful drilling plus the aid of an electric log, adequate water-bearing sands can be found within the Tallahatta formation (see log above).

Location: Center of northeast quarter of Land Lot 260, 21st Land District
Owner: No. 1 Metcalf Driller: Hunt Oil Company Drilled: August 1944

DECATUR COUNTY
Well No.: GGS 168 Elev.: 104
(derrick floor)

Thickness Depth

(feet)

(feet)

No samples ____ _

138

138

In Upper Eocene: Jackson Group: Ocala Limestone:

Dolomitic limestone: light-brown, saccharoidal, fossiliferous

(some Foraminifera)

207

345

Operculinoides sp., Gypsina globula, Amphistegina pinarewsis var. at 265-275.

In Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: cream to light-brown, rather massive and crystal-

line, somewhat nodular, fossiliferous (bryozoan and mollus-

can remains and some Foraminifera) ____ _________________

10

355

Limestone: cream, calcitized and granular, somewhat loosely consolidated, coarsely but sparsely glauconitic, fossiliferous at certain levels (macroshells, echinoid and bryozoan re-

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

153

Thickness (feet)
mains, and Foraminifera) ; interbedded dolomitic limestone, gray to brown, saccharoidal, glauconitic; indurated sand, fine to medium-grained, subangular____________ _________________________________ 455

Depth (feet)
810

Tallahatta Formation:

Indurated sand: fine to medium-grained, subangular, abun-

dantly glauconitic at depth; interbedded clay, brown, some-

what fissile ____________

______ ______ -------------------------------------- ___ 310

Sand: coarse-grained, subangular______________________________________________________ 80

1,120 1,200

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: dark-gray, silty, micaceous, fossiliferous at depth (some

Foraminifera) ; interbedded sand, light-gray, fine-grained,

subangular, glauconitic (finely disseminated grains), mica-

ceous

320

Robulus sp., Alabamina sp., Globigerina sp. at 1290-1300. Marginulina sp. at 1330-1340.

1,520

Paleocene: Midway Group: Clayton Formation:

Limestone: somewhat yellow, dense, crystalline, coarsely glau-

conitic, fossiliferous (some "larger Foraminifera")

25

Pseudophragmina stephensoni at 1540-1550.

Indurated sand: fine-grained, glauconitic (finely dissemi-

nated) ; interbedded limestone, gray, crystalline, sandy,

fossiliferous (Foraminifera at certain levels) ___

195

Robulus pseudo-mamilligerus at 1600-1610.

Marl: gray, somewhat indurated, silty, micaceous, glauconitic, fossiliferous (Foraminifera 1 ) ___ ________________ _______________ _____ _____________ 295

1,545 1,740 2,035

Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):
Marl: gray, chalky, micaceous, glauconitic, sandy at certain levels, fossiliferous (fossils at certain horizons)_ __________ ___ _______ 770
Globotruncana cretacea at 2050-2060. Planulina taylorensis at 2210-2220. Kyphopyxa christneri at 2620-2630. Vaginulina texana at 2650-2660.

2,805

1Tamesi fauna.

1.54

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Sand: fine to medium-grained, somewhat indurated, glauconnitic (finely disseminated), phosphatic, fossiliferous (a coquina) _________________________ ------------------------------------- ------------------------------ 115

Depth (feet)
2,920

Tuscaloosa Formation:

Sand: medium-grained, angular, somewhat indurated, glau-

conitic, fossiliferous (macroshells) ; interbedded shale, gray,

fissile, carbonaceous, micaceous __________________________________

295

Shale: dark-gray, fissile, carbonaceous, micaceous_________________________ 265

Sand: medium-grained, angular, glauconitic, fossiliferous

(macroshells); interbedded shale, as above_____________________

90

Sand: coarse-grained, angular, arkosic; interbedded clay, red,

micaceous, sandy _ ------------------------------------------

_________________ 40

3,215 3,480 3,570 3,6101

Summary:

No samples ___ -------------------------------------------- ________________

--------------

138

In upper Eocene (Ocala limestone) _______________________________________

207

In middle Eocene (Lisbon formation) ______ _

465

Middle Eocene (Tallahatta formation) ___________________ _

390

Lower Eocene (Wilcox group, undifferentiated)

320

Paleocene (Clayton formation) ____________________________

515

Upper Cretaceous (post-Tuscaloosa, undifferentiated) _

885

Upper Cretaceous (Tuscaloosa formation) _____

690

138 345 810 1,200 1,520 2,035 2,920 3,610

Limestone _______________

Potential Water-Bearing Zones:

200

545

Remarks:
This is a difficult area in which to find suitable aquifers. In general, most aquifers available below a depth of 545 contained mineralized ground water.

1Not examined below 3,610.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

155

Location: In Bainbridge Owner: City of Bainbridge Driller: Layne-Atlantic Company Drilled: May 1951

DECATUR COUNTY
Well No.: GGS 228 Elev.: 1351

Thickness Depth

(feet)

(feet)

Residuum:

Clay: bluish-gray to tan to purple to red (mottled), very

sandy, limonitic, residual limestone at depth_____________________________ 75

75

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: brown with some cream, dense, crystalline, much

calcitized, somewhat dolomitized, fossiliferous (echinoid and

bryozoan remains and Foraminifera)

______________ _ 75

150

Operculinoides sp. at 75-79.
Operculina cf. 0. mariannensis, Asterocyclina sp., Gypsina globula at 79-97.

Limestone: cream, considerably calcitized, rather massive, fos-

siliferous (Foraminifera); interbedded dolomitic limestone,

light-brown, saccharoidal _________

_____________________________________ 70

220

Amphistegina pinarensis var. at 185-190.

Limestone: as above, but somewhat more porous ______ _

130

350

In Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: light-gray, massive, nodular, pyritiferous, fossil-

iferous (bryozoan remains and some Foraminifera) _____________ _ 55

405

Lepidocyclina sp. at 350-355. Asterocyclina sp. at 385-390.

Limestone: light-gray, much calcitized, saccharoidal, coarsely

but sparsely glauconitic, fossiliferous (some Foraminifera) __ 10

415

Limestone: cream, much calcitized, granular, porous, coarsely

glauconitic, fossiliferous (echinoid and bryozoan remains,

and Foraminifera)

________________

_______________ 30

445

Asterocyclina sp. at 415-420.

1Average elevation taken from State Highway map.

156

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:
Residuum Upper Eocene (Ocala limestone) ______ _ In middle Eocene (Lisbon formation)_

Thickness Depth

(feet)

(feet)

75

76

275

350

95

445

Limestone

Potential Water-Bearing Zones:

225

445

Location: Near Eastman Owner: Edwards-Howard Drug Company

DODGE COUNTY

Well No.: GGS 222

Elev.: 355

Thickness Depth

(feet)

(feet)

No samples __

159

159

Oligocene (Undifferentiated):

Limestone: light-gray, dense, highly calcitized and crystalline,

cherty; limestone, white to cream, soft, somewhat nodular,

fossiliferous (bryozoan remains)

91

250

Limestone: white to cream, nodular, somewhat calcitized and

crystalline, fossiliferous (bryozoan remains and some Fora-

minifera) __ _________________________ ______________

_______________________________ 120

370

Lepidocyclina sp. common, Rotalia mexicana var. at 250-260.

Upper Eocene: Jackson Group: Ocala Limestone: Limestone: as above, abundant Foraminifera _

75

446

Summary:

No samples ___

________________________________________

Oligocene (undifferentiated) ____________

In upper Eocene (Ocala limestone) __

159

159

211

370

75

445

Potential Water-Bearing Zones: Limestone _______________________

195

445

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

157

Location: 5 mi. south of Dubois, 4.5 mi. northwest of Eastman, 0.93 mi. west of Dodge Hollow School at dwelling
owner: No. 1 Lyman Jones Driller: H. B. Truluck Drilled: August 1951

DODGE COUNTY
Well No.: GGS 233 Elev.: 347

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: mottled, sandy, limonitic___

40

40

Sand: fine to coarse-grained, angular____________________________

30

70

Clay: brown, sandy, with fragments of residual limestone______

10

80

Oligocene (Undifferentiated):

Limestone: white, dense, crystalline, saccharoidal, cherty, fos-

siliferous (some bryozoan remains, and Foraminifera) __

60

140

Rotalia mexicana var., Gypsina globula1 at 100-110.

Miocene (undifferentiated) __ Oligocene (undifferentiated)

Summary:

80

80

60

140

Potential Water-Bearing Zones:
Sand: fine to coarse-grained Limestone

20

70

60

140

Location: 2 mi. east of Dubois, north side of county road, 0.1 mi. east of road junction
Owner: No. 1 Sheldon Steel Driller: H. B. Truluck

DODGE COUNTY
Well No.: GGS 240 Elev.: 357

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: gray to red (mottled), sandy, limonitic___

40

40

Sand: medium-grained, angular_

20

60

Clay: white to gray, sandy_

30

90

- -Clay: as above, with fragments of residual limestone ________________
'Reworked ( ? ) fossil of middle Eocene age.

10

100

158

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Limestone: white, dense, much calcitized, cherty, fossiliferous

(bryozoan remains and some Foraminifera)_____________________________ 50

150

Rotalia mexicana var., Asterigerina sp., Siphonina advena at 110-120. Gypsina globula1 at 120-130. Lepidocyclina sp. at 140-150.

Miocene (undifferentiated) __ Oligocene (undifferentiated) ___

Summary:

100

100

50

150

Limestone

Potential Water-Bearing Zones:

50

150

Location: Top of hill, 0.25 mi. east of Southern R.R. crossing near Empire
Owner: No. 1 H. A. Pierce Driller: H. B. Truluck Drilled: February 1952

DODGE COUNTY
Well No.: GGS 267 Elev.: 401

Thickness Depth

(feet)

(feet)

No samples ..

10

10

In Miocene (Undifferentiated):

Clay: gray to purple (mottled), sandy, limonitic____ -----------------

10

20

Sand: fine to coarse-grained, angular______________________________________________ 10

30

Clay: light-gray, sandy__

10

40

Sand: coarse-grained, arkosic__ . --------------- ____ Clay: gray, sandy______________________________________________________________________

20

60

20

80

Sand: coarse-grained, arkosic______ ------------------------------------------------------- 20

100

Clay: yellowish-green to red (mottled) ; interbedded sand,

fine to coarse grained, angular_____________________________________________________ 70

170

Summary:

No samples ---

_______________________________________________ ------------------------------ 10

10

In Miocene (undifferentiated) __________________________________ ---------------------------- 160

170

1 Reworked ( ? ) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

159

Potential Water-Bearing Zones:

Sand: fine to coarse-grained____ ------------------------------------- __________________ 20

60

Sand: fine to coarse-grained__

---------------------------------------

20

100

Sand: fine to coarse-grained____ -----------------------------------------------------

10

130

Sand: fine to coarse-grained __________ --------------------------------------------------------- 10

170

Location: 6 mi. northwest of Eastman Owner: No. 1M. L. Sapp Driller: H. B. Truluck Drilled: February 1952

DODGE COUNTY
Well No.: GGS 269 Elev.: 308

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated): Clay: gray to red (mottled), sandy, limonitic Sand: fine to coarse-grained, cherty_____ _ No samples ___ _

50

50

30

80

10

90

In Oligocene (Undifferentiated):

Limestone: white, dense, cherty, fossiliferous (bryozoan re-

mains and some Foraminifera) __________ --------------------------------------------- 50

140

Asterigerina subacuta at 110-120. Rotalia m.exicana var. at 120-130.

Miocene (undifferentiated) No samples_ In Oligocene (undifferentiated)

Summary:

80

80

10

90

50

140

Potential Water-Bearing Zones:

Sand: fine to coarse-grained_____ --------------------------------------------------------

30

80

Limestone _____ _ _______________

50

140

-

160

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Approximately 4 mi. west of Eastman, south side U.S. Highway 341, near log cabin
Owner: No. 1 Eugene Smith Driller: H. B. Truluck Drilled: February 1952

DODGE COUNTY
Well No.: GGS 273 Elev.: 380

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: bluish-gray to red to brown to purple (mottled), sandy,

limonitic ___

____________ _

60

60

Sand: medium-grained, angular, arkosic_

20

80

Clay: as above, with fragments of residual limestone

30

110

Oligocene (Undifferentiated): Limestone: yellow, much leached and iron-stained, cherty _

30

140

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, soft and porous, fossiliferous (macroshells,

echinoid and abundant bryozoan remains, and Foraminifera)__ 20

160

Gypsina globula, Asterocyclina sp., Lepidocyclina sp., Eponides jacksonensis, Reussella eocena at 140-150.

No samples_

20

180

Limestone: white, crystalline, highly calcitized, fossiliferous

(echinoid and bryozoan remains and some Foraminifera)________ 10

190

Summary:
Miocene (undifferentiated) _____ Oligocene (undifferentiated) _ Upper Eocene (Ocala limestone) _____

110

110

30

140

50

190

Potential Water-Bearing Zones:

Limestone _________________________ ------------------------------------------------------------------------ 50

190

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

161

DOOLY COUNTY

Location: Northeastern part of city, few ft. west of elevated water (steel) reservoir, top of prominent hill, in
Vienna Owner: No. 2 City of Vienna Driller: Layne-Atlantic Company Drilled: March 1947

Well No.: GGS 143 Elev.: 397

Thickness Depth

(feet)

(feet)

Residuum:

Clay: yellowish-green to brick-red (mottled), sandy, limonitic____ 61

61

Clay: tan to dark-brown to purple (mottled), sandy, and

fragments of residual limestone _

________ ____ _ ____________ _ 19

80

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, somewhat crystalline and saccharoidal,

coarsely but sparsely glauconitic, fossiliferous (macroshells,

echinoid and bryozoan remains, and some Foraminifera)

37

117

Middle Eocene: Claiborne Group: Lisbon Formation:

Marl: dark-green, somewhat indurated, silty, glauconitic, fos-

siliferous (echinoid and bryozoan remains and some Fora-

minifera) ---------------------------- _ _________________________

21

138

Textularia adalta, Nonion inexcavatus, Nonion advena, Valvulineria jacksonensis, Cibicides mississippiensis, Cibicides americanus var., Cibicides lobatulus at 117-138.

Limestone: cream, coarsely but sparsely glauconitic, sandier

with increased depth, fossiliferous (macroshells abundant

bryozoan remains, and some Foraminifera) _________________

46

184

Bryozoan remains abundant at 138-158.

Marl: dark-green to light-gray, silty, glauconitic (finely dis-

seminated grains), fossiliferous (echinoid and bryozoan

remains and Foraminifera); interbedded limestone, white,

rather massive and dense, very sandy, coarsely glauco-

nitic, fossiliferous (casts and molds of megafossils) __

61

245

Cibicides westi at 184-189. Cibicides pseudoungerianus var. lisbonensis at 230-245.

162

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Tallahatta Formation:

Thickness Depth

(feet)

(feet)

Sand: fine to coarse-grained, subangular, phosphatic, fossil-

iferous (common to abundant macroshells at certain levels)____ 173

418

Buhrstone: gray to dark-brown, dense, cherty _

17

435

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: dark-gray, silty, carbonaceous, micaceous, pyritiferous,

fossiliferous (Foraminifera); limestone, gray, very dense,

crystalline, sandy, glauconitic ________________ _

___________ _

70

505

Eponides dorfi, Cibicides howelli, Anomalina sp. at 435-505.

In Paleocene: Midway Group: Clayton Formation:

Clay: light-gray to white, blocky, micaceous; limestone, light-

gray, dense, crystalline, sandy, coarsely glauconitic, fos-

siliferous (fragments and casts of megafossils and some

bryozoan remains) ; clay, black, fissile, carbonaceous, mi-

caceous _____________ -----------------

40

545

Upper Cretaceous: Providence Sand:

Sand: fine to coarse-grained, subangular; inclusions of kaolin,

light-gray, blocky, greasy appearance, micaceous ______ --------- 120

665

Marl: dark, bluish-gray, micaceous, pyritiferous, sandy, fos-

siliferous (some Foraminifera)

__________________ 138

803

Anomalina sp. at 665-677. Anomalina pseudopapillosa at 677-712.

Summary:

Residuum

- _ _______ _

80

80

Upper Eocene (Ocala limestone) ___

37

117

Middle Eocene (Lisbon formation)

_______________ _

128

245

Middle Eocene (Tallahatta formation)__ ____________________________

190

435

Lower Eocene (Wilcox group, undifferentiated) _

____________ _

70

505

In Paleocene (Clayton formation) _______

___________________ 40

545

Upper Cretaceous (Providence sand) __________ _____

______________ 258

803

Potential Water-Bearing Zones:
Sand : fine to coarse-grained _ Sand : fine to coarse-grained _

173

418

120

665

WELL LOGS OF THE COASTAL PLAIN OE' GEORGIA

163

Location: Approximately 3.4 mi. west of Pinehurst and 1.25 mi. northeast of Forest Chapel
Owner: No. 1 Dan Thompson Driller: H. B. Truluck Drilled: September 1951

DOOLY COUNTY
Well No.: GGS 241 Elev.: 399

Thickness Depth

(feet)

(feet)

Residuum:

Clay: olive-green to red (mottled) to tan to dark-brown to

purple at depth, cherty, sandy, limonitic, and fragments

of residual limestone ________________________ ---------------------------

70

70

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, much calcitized, coarsely glauconitic at

certain levels, fossiliferous (macroshells, Ostracods, and

Foraminifera)

____ _

----------------------------------- 30

100

Sand: fine to coarse-grained, angular

30

130

Residuum ______________ ______________ _ Upper Eocene (Ocala limestone)

Summary:
________________________ _ _____________ _

70

70

60

130

Potential Water-Bearing Zones:

Limestone ----------------------------- _______________________________________ -------------------------- 30

100

Sand: fine to coarse-grained __

____________ _

30

130

Remarks: Additional aquifers occur at depths below 130.

Location: 75 ft. east of Highway 41, 30 ft. south of dwelling in Richwood
Owner: No. 1 J. M. Diffee Driller: H. B. Truluck Drilled: October 1951

DOOLY COUNTY
Well No.: GGS 246 Elev.: 323

Thickness Depth

(feet)

(feet)

Residuum:

Clay: bluish-gray to brick-red, very sandy, limonitic

40

40

Clay: as above, with fragments of residual limestone __________________ 20

60

164

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Eocene: Jackson Group: Ocala Limestone:

Thickness (feet)

Limestone: cream, much calcitized, rather massive, fossiliferous (fragments, casts and molds of megafossils, echinoid and bryozoan remains, and some Foraminifera) ------------------ 40

Lepidocyclina- sp. at 90-100.

Depth (feet)
10~

Summary:

Residuum

__________________________ _

Upper Eocene (Ocala limestone) ___

GO

60

40

100

Limestone

Potential Water-Bearing Zones:

40

100

Remarks: Additional aquifers occur below depth 100.

DOOLY COUNTY

Location: 1.5 mi. west of Unadilla

Well No.: GGS 257

Owner: No. 1 G. A. Lewis

Elev.: 447

Driller: H. B. Truluck

Thickness Depth

(feet)

(feet)

--------------------------------------------------

Residuum:

Clay: bluish-gray to brick-red to purple, sandy, limonitic,

and fragments of residual limestone ___

_ _____ _

30

30

Oligocene (Undifferentiated):

Limestone: white to cream, iron-stained, leached, cherty,

fossiliferous (some Foraminifera)

_________________________________ _ 20

50

Rotalia mexicana var. at 30-40. Quinqueloculina sp. at 40-50.

Sand: fine to coarse-grained, angular; chert, dark-brown,

fossiliferous; residual limestone ---------------------------------------------------- 10

60

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, much calcitized, somewhat saccharoidal,

coarsely but sparsely glauconitic, fossiliferous (fragments

of macroshells, echinoid and bryozoan remains, and some

Ostracods and Foraminifera) ________ ________ _ _______ __________________ _______ 10

70

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

165

Summary:
Residuum --Oligocene (undifferentiated) ____ Upper Eocene (Ocala limestone)

Thickness Depth

(feet)

(feet)

30

30

30

60

10

70

Limestone and sand

Potential Water-Bearing Zones:

40

70

Remarks: Additional aquifers occur below depth 70.

Location: 10 mi. east of Vienna and 1.25 mi. north of Highway 27
Owner: No. 1 Carl Lupo Driller: H. B. Truluck Drilled: January 1952

DOOLY COUNTY
Well No.: GGS 258 Elev.: 360

Thickness Depth

(feet)

(feet)

Residuum:

Clay: bluish-gray to brick-red to purple, very sandy, limonitic_ 30

30

Oligocene (Undifferentiated):

Limestone: yellow, much iron-stained, somewhat nodular,

dense, crystalline, highly calcitized, rather massive, cherty,

fossiliferous (some bryozoan remains and Foraminifera) _

40

70

Rotalia mexicana var., Quinqueloculina sp. at 40-50.

Limestone: white, dense, crystalline, saccharoidal, fossilifer-

ous (macroshells, echinoid and bryozoan remains, and some

Foraminifera) _

______ ____________________ 20

90

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, rather porous, considerably calcitized,

coarsely glauconitic at depth, fossiliferous (echinoid and

abundant bryozoan remains and Foraminifera) __________________ 110

200

Lepidocyclina sp., Gypsina globula at 90-100. Robulus alato-limbatus, Siphonina jacksonensis, Eponides jacksonensis, Uvigerina jacksonensis, Cibicides lobatulus at 110-120. Operculinoides sp. at 170-180. Asterocyclina sp. at 180-190.

166

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Indurated sand: fine to coarse-grained, angular

Thicknes (feet)
10

Depth (feet)
210

Summary:

Resid uurn ~ _~~ ~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~--~~ ~~~~ 30

30

0 ligocene (undifferentiated) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 60

90

Upper Eocene (Ocala limestone) -~~~~ _~~ ~ ~ ~~~~~~ ~~~~~-~~~~~~~~~~- ~

120

210

Limestone -~

Potential Water-Bearing Zones:

110

200

DOOLY COUNTY

Location: 1.25 miles west of Sugar Hill School, south side of Unadilla Road
Owner: No. 1 D. J. Folds Driller: H. B. Truluck Drilled: May 1952
Residuum:

Well No.: GGS 306 Elev.: 357

Thickness Depth

(feet)

(feet)

Clay: bluish-gray to brick-red to tan to purple (mottled),

sandy, limonitic ~

50

50

Oligocene (Undifferentiated):

Limestone: white, nodular, cherty, fossiliferous (echinoid and

bryozoan remains and some Foraminifera)

30

80

Quinqueloculina sp. at 50-60. Rotalia mexican,a var. at 60-70.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, nodular, much calcitized, somewhat crystal-

line, fossiliferous (macroshells, abundant echinoid and bryo-

zoan remains, and some Foraminifera)~~- -~~-~

20

100

Eponides jacksonensis common at 80-90.

Limestone: light-gray, dense, massive, coarsely but sparsely

glauconitic, sandy, fossiliferous (casts and molds of mega-

fossils, echinoid and bryozoan remains, Ostracods, and

Foraminifera) _~ ~-~~~~ ~~~~~~~~ ~~ ~ ~ ~-~~~~ ~-~~~~~ ~~ _ ~~~~~ -~~~~~ -~~~~

10

110

Marl: gray, sandy, glauconitic, fossiliferous (abundant echi-

noid and bryozoan remains and some Foraminifera) ~~~~~~ ~~~~~ ~ 20

130

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

167

Thickness (feet)

Limestone: white, dense, crystalline, highly calcitized fossili-

ferous (macroshells, abundant echinoid and bryozoan re-

mains, Ostracods and Foraminifera)

____________ ___ 20

Depth (feet)
150

Operculinoides sp. at 140-150.

Limestone: cream, rather soft and porous but very dense

and calcitized at depth, coarsely but sparsely glauconitic,

fossiliferous (macroshells, abundant echinoid and bryozoan

remains, Ostracods, and abundant "larger Foraminifera") __ 20

170

Asterocyclina sp., Lepidocyclina ocalana at 150-160.
Operculina mariannensis, Camerina striatoreticulata at 160-170.

Sand: fine to coarse-grained, angular

10

180

Summary:
Residuum Oligocene (undifferentiated) Upper Eocene (Ocala limestone)

50

50

30

80

100

180

Potential Water-Bearing Zones:
Limestone ---------------------Sand: fine to coarse-grained

90

170

10

180

Location :9 mi. ESE of Vienna, 811 ft. north and 1,003 ft. east of Land Lot 163, 6th Land District
Owner: No.1 H. E. Walton Driller: Georgia-Florida Drilling Company Drilled: April 1960

DOOLY COUNTY
Well No.: GGS 619 Elev.: 442

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: pale-greenish to brownish-gray with tan to red streaks

(somewhat mottled), blocky, sandy; interbedded limestone

at depth, cream, dense, sandy, somewhat cherty ____ _________________ 110

110

No samples

530

640

168

GEORGIA GEOLOGICAL SURVEY BULLE'fiN 70

In Lower Eocene: Wilcox Group (Undifferentiated):

Thickness Dept!

(feet)

(feet)

Sand: medium to coarse-grained, subangular, phosphatic at

depth; some clay (or kaolin?), light-gray, sandy, micaceous__ 60

700

Sand: as above; much clay, dark-gray, silty, abundantly

glauconitic, micaceous, pyritiferous ______

__________ _ 24

724

Paleocene: Midway Group: Clayton Formation:

Clay: dark-gray, laminated, silty, micaceous, carbonaceous;

interbedded limestone, light-gray, sandy, pyritiferous, glau-

conitic, fossiliferous (macroshells and bryozoan remains) __ 30

754

Limestone: light-gray, dense, sandy, glauconitic, pyritiferous,

fossiliferous (some macroshells) ____

56

819

Limestone: as above but sandier with depth __

17

827

Upper Cretaceous: Post-Eutaw (Undifferentiated): Sand: coarse-grained, subangular ______________________________________________ _ 81

Sand: fine to coarse-grained, subangular; interbedded marl,

dark-bluish-gray, somewhat chalky, micaceous, pyritiferous,

fossiliferous at certain levels (some macroshells, Ostra-

cods and Foraminifera) __________________________________________________

297

Anomalina pseudopapillosa at 900-910.

Gaudryina rudita, Robulus munsteri, Loxostoma plaitum, Cibicides harperi, Anomalina clementiana at 1135-1145.

Clay: dark-brownish-gray, laminated, silty, micaceous, lig-

nitic, fossiliferous at certain levels (some macroshells,

Ostracods and Foraminifera) ; interbedded sand, fine to

coarse-grained, subangular, phosphatic __________________________

670

Planulina taylorensis at 1215-1225. Kyphopyxa christneri at 1775-1785.

Sand: medium to coarse-grained, subangular; interbedded clay, as above ------------------------------------------------- ----------------------------- 128

Clay: dark-brown, laminated, silty, micaceous, glauconitic,

fossiliferous at certain levels (some macroshells, Ostracods

and Foraminifera); interbedded sand, fine to medium-

grained, subangular, phosphatic____________________________________ _

135

Vaginulina texana at 2025-2035.

908 1,205
1,875 2,003 2,138

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

169

Eutaw Formation (Restricted):

Thickness Depth

(feet)

(feet)

Sand: fine-grained, somewhat indurated at certain levels, micaceous, phosphatic, glauconitic, fossiliferous (macroshells and some fish teeth) ---------------------------------------------------

72 2,210

In Tuscaloosa Formation:

Sand: fine to coarse-grained, coarser-grained with depth,

subangular, micaceous, arkosic; interbedded clay, red to

purple, sandy, micaceous ------------------------------------------------------

742

2,952

Lower Cretaceous(?) (Undifferentiated):

Sand: coarse-grained, subangular to subrounded, vari-colored,

arkosic, micaceous; interbedded clay, pale-bluish-green to

tan to red to purple (mottled), blocky, greasy-appearing,

somewhat sandy, abundantly micaceous

__________________ 560

3,512

Basement Complex (Undifferentiated):
Crystalline Rock: dark-gray to red at depth, abundantly micaceous, grains of pale-green epidote and other metamorphic minerals ---------------------------- ------------------------------------------------- 236

3,748

Summary:

Miocene (undifferentiated) _______

_ __________ _ ________________________ 110

No samples _______________ ____________________

__________________ ------------------------------ 530

In lower Eocene (Wilcox group, undifferentiated) ________ _________________ 84

Paleocene (Clayton formation) _______ __ ________________ ______________

103

Upper Cretaceous (post-Eutaw, undifferentiated) __________________________ 1,311

Upper Cretaceous (Eutaw formation, restricted)----------------------------- 72

Upper Cretaceous (Tuscaloosa formation) ---------------------------------------- 742

Lower Cretaceous (?) (undifferentiated) -------------------------------------------- 560 Basement complex (undifferentiated) ______________ --------------------------------- 236

110 640 724 827 2,138 2,210 2,952 3,512 3,748

Potential Water-Bearing Zones:
Limestone _____________ -------------------------------------------------------------------------------------- 56 Sand: fine to coarse-grained ------------------------------------------------------------------ 78 Sand: fine to coarse-grained ------------------------------------------------------------------ 30 Sand: fine to coarse-grained ------------------------------------------------------------------ 40 Sand: fine to coarse-grained ------------------------------------------------------------------ 128 Sand: fine to coarse-grained ------------------------------------------------------------------ 387

810 905 1,125 1,380 2,003 2,952 1

'There is a possibility that these sands may contain salt water, hence be unsuitable for human consumption.

170

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

DOUGHERTY COUNTY

Location: 7 mi. southwest of Albany, 3.5 mi. north of Lockette, Land Lot 116, 2nd Land District
Owner: No. 1 Reynolds Bros. Lumber Company Driller: J. K. Sealy et al Drilled: 1942

Well No.: GGS 11 Elev.: 197

Thickness Depth

(feet)

(feet)

No samples

280

280

In Middle Eocene: Claiborne Group: Tallahatta Formation:

Sand: fine to medium-grained, angular, phosphatic ______________ _ 129

409

No samples

23

432

Sand: as above; marl, gray, silty, micaceous, glauconitic, fos-

siliferous (some Foraminifera) ___________________________________

33

465

Valvulineria jacksonensis var., Alabamina sp. at 432-465.

Lower Eocene: Wilcox Group (Undifferentiated):

Sand: as above; marl, gray to darker-gray at depth, mica-

ceous, carbonaceous, fossiliferous at certain levels (Fora-

minifera) _____________________________________________________________________

29

494

Globorotalia wilcoxensis at 465-494.

Sand: fine-grained, angular, abundantly glauconitic ___

30

524

Clay: light-gray, somewhat fissile; sand, as above

34

558

No samples

17

575

In Paleocene: Midway Group: Clayton Formation:

Limestone: white, crystalline, coarsely glauconitic, sandy; in-

durated sand at depth, fine-grained, dense, glauconitic

(finely disseminated) ____ __ _____________________________ __________________ ____ 15

590

Indurated sand: fine-grained, rather dense, glauconitic; inter-

bedded marl, dark-gray to black, fissile, carbonaceous,

micaceous ____ _

25

615

Operculinoides catenula common, Robulus midwayensis, Robulus degolyeri at 585-623.

Limestone: light-gray, dense, crystalline, sandy to very sandy

in its lower part, glauconitic, fossiliferous (macroshells,

bryozoan remains, and some Foraminifera)

135

750

Sand: fine to coarse-grained, angular ______________________________

20

770

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

171

Thickness Depth

(feet)

(feet)

Upper Cretaceous: Providence and Ripley Formations (Undifferentiated):

Marl: gray, somewhat chalky, micaceous, glauconitic, pyriti-

ferous, fossiliferous (megafossils, Ostracods, and Fora-

minifera) ---------------------------------------------- ___________________________________________ _ 20

790

Gaudryina rudita, Anomalina pseudopapillosa at 770-790.

Indurated sand: fine to coarse-grained, angular, fossilifer-

ous (a coquina) _

25

815

Sand: fine to coarse-grained, angular; interbedded marl,

as above

255

1,070

Cibicides harperi, Textularia ripleyensis at 925-955. Globotruncana cretacea, Dorothia sp. at 955-985.

Marl: as above

30 1,100

Cusseta and Blufftown Formations (Undifferentiated):

Marl: bluish-gray to brown, somewhat fissile at depth, silty, micaceous, glauconitic, carbonaceous, pyritiferous, abundantly fossiliferous at certain levels (megafossils, Ostracods and Foraminifera) ; interbedded sand, fine to coarsegrained, angular, glauconitic, somewhat phosphatic, fossiliferous (macroshells) _____________________________________________________________ 1,170

Planulina taylorensis at 1105-1135. Kyphopyxa christneri, Vaginulina texana at 1585-1615.

Sand: fine to medium-grained, somewhat indurated, glauco-

nitic, micaceous, fossiliferous (macroshells)

95

Eutaw Formation (Restricted):
Sand: fine to coarse-grained, angular, somewhat indurated, micaceous, phosphatic, glauconitic, fossiliferous (a coquina)__ 140

2,270 2,365 2,505

Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, arkosic, scattered

grains of "rose quartz"; interbedded clay, yellowish-green,

somewhat iron-stained, micaceous, sandy

315

Clay or shale: dark-gray to black, carbonaceous (finely dis-

seminated), fossiliferous at certain levels (casts of mega-

fossils) ; interbedded sand, fine to coarse-grained, angular,

glauconitic

__________________________________ _

100

2,820 2,920

172

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Sand: medium-grained, glauconitic, micaceous

Thickness (feet)
15

Depth (feet)
2,935

Sand: coarse-grained, angular, massive, arkosic; interbedded clay, brick-red to dark-green (mottled), highly micaceous, sandy ___ ----------------------------------------------------------------------------------

365 3,3001

Summary:

No samples ______________________ ------------------------------------------------------------------------- 280

In middle Eocene (Tallahatta formation) ____________________

185

Lower Eocene (Wilcox group, undifferentiated) .

93

No samples ------------------------------------------------------------------------------------------------ 17
In Paleocene (Clayton formation) -------------------------------------------------------- 195 Upper Cretaceous (Providence and Ripley formations) _________________ 330

Upper Cretaceous (Cusseta and Blufftown formations)__ Upper Cretaceous (Eutaw formation) _______ ________________

_________ 1,265 140

Upper Cretaceous (Tuscaloosa formation) __ ------------------------------------- 795

280 465 558 575 770 1,100 2,365 2,505 3,300

Potential Water-Bearing Zones:

Sand: fine to coarse-grained _____________________________________________

85

385

Limestone: ----------------------------------------- ___________________

135

750

Sand: fine to coarse-grained ______________________________________________________________ _ 20

770

Location: 3.5 mi. west of Dougherty-Worth County line and 0.5 mi. south of Atlantic Coast Line R.R.
Owner: No. 1 U. S. Marine Corps Driller: Layne-Atlantic Company Drilled: 1951

DOUGHERTY COUNTY
Well No.: GGS 248 Elev.: 223

Thickness Depth

(feet)

(feet)

Residuum:

Sand: fine to medium-grained, limonitic; clay, mottled, sandy__ 20

20

Clay: gray to brown (mottled), sandy, limonitic, and frag-

ments of residual limestone ----------------------------------------

20

40

No samples -----------------------------------------------------------------------

12

52

'Not reported below 3,300.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

173

In Upper Eocene: Jackson Group: Ocala Limestone:

Thickness Depth

(feet)

(feet)

Limestone: white to cream, dense (much calcitized), sandier

and glauconitic at depth, fossiliferous (macroshells, bryo-

zoan remains, and some Foraminifera) -------------------------------------- 256

308

Operculin,oides sp. at 70-90. Argyrotheca sp. at 90-110. Gypsina globula at 185-210. Amphistegina pinarensis var. at 270-290.

Middle Eocene: Claiborne Group: Lisbon Formation:

Sand: fine to coarse-grained, sparsely phosphatic, fossilifer-

ous (macroshells at certain levels) ; interbedded marl, light-

gray to cream, somewhat sandy, finely glauconitic, fossili-

ferous (bryozoan remains, Ostracods and Foraminifera);

thin beds of limestone, light-gray, dense (much calcitized),

sandy, finely glauconitic, fossiliferous (some macro- and

microfossils) ----------------------------------------------------------------------------

92

400

Cibicides pseudoungerianus var. lisbonensis at 311-326.
Asterocyclina monticellensis, Siphonina claibornensis at 326-329.

Fine to coarse-grained, phosphatic sand at 350-360.

Tallahatta Formation:

Sand: fine to coarse-grained, phosphatic, fossiliferous (abun-

dant macroshells) ; interbedded stringers of limestone,

light-gray, sandy, coarsely glauconitic; beds of marl, light-

gray to yellowish-green, somewhat fissile, sandy, carbo-

naceous, micaceous, fossiliferous (some Foraminifera)___________ 240

640

Fine to coarse-grained, phosphatic sand at 435-450.

Fine to coarse-grained, phosphatic sand at 475-538.

Valvulineria jacksonensis var., Valvulineria danvillensis var., Cibicides tallahattensis at 538-554.

Fine to coarse-grained, phosphatic sand at 550-590.

Limestone, light-gray, sandy, dense, coarsely glauconitic, fragments and molds of macroshells at 600-610.

Limestone as above at 630-640.

174

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Lower Eocene: Wilcox Group (Undifferentiated):

Thickness (feet)

Marl: dark-gray, silty, carbonaceous, micaceous, pyritiferous,

fossiliferous (Foraminifera at certain levels)

130

Cibicides howelli, Cibicides blanpiedi at 656-676. Eponides dorfi, Alabamina wilcoxensis, Cibicides howelli, Globorotalia sp. at 758-770.

Depth (feet)
770

Paleocene: Midway Group: Clayton Formation:

Sand: fine-grained to coarser-grained at depth; interbedded

marl, dark-gray to black, finely micaceous, fossiliferous

(Ostracods and Foraminifera) ; limestone, light-gray, dense

(highly calcitized), sandy, glauconitic, fossiliferous (macro-

shells, bryozoan remains, and some Foraminifera)

80

850

Limestone, light-gray to white, sandy, coarsely glauconitic, macroshells at 770-784.

Robulus alabamensis, Eponides lotus, Cibicides alieni, Anomalina acuta at 799-819.

Limestone, light-gray, dense, sandy, coarsely glauconitic, macroshells at 823-834.

Limestone: light-gray, dense (much calcitized) glauconitic,

somewhat sandy, fossiliferous (macroshells, bryozoan re-

mains, and some Foraminifera)

~ ~~~~~~~ ~~--~~~~

90

940

Sand: fine to coarse-grained, angular, iron-stained__ _

26

966

Upper Cretaceous: Providence and Ripley Formations (Undifferentiated):

Marl: bluish-gray, silty, micaceous, pyritiferous, fossiliferous (macroshells, Ostracods and Foraminifera) ---~-~-~-------

34 1,000

Anomalina pseudopapillosa at 959-974.

Sand: fine to coarse-grained, indurated ---------------~-~~-- ~

25 1,025

Summary:

Residuum

40

No samples ~ -~~~~~~~~~~--~ ------------~~~~~~~~~-~~~~~~-~~~~-~~~-~~-~--~-~~~~~~-~~-~~~~~~-~--~-~-~~~-~ ~~ 12

In upper Eocene (Ocala limestone)-~~~-~--~-~-----~ --------~~~-~~-~- ---~--~~~~~-~-~~~~~ 256

Middle Eocene (Lisbon formation) ----~-~~-~~~~~---

-~~~~~~~~~~~~-~ 92

Middle Eocene ( Tallahatta formation)~~---~~~~~~~~-~-~----

240

Lower Eocene (Wilcox group, undifferentiated) _____ -~~---~~~~~~~~~~~~~~~~~ 130

Paleocene (Clayton formation)~--~-~--~~~~-~~~~~~~~~~-~-~-~~~----~-~~~~~~~~-~~~-~-------~-~ 196

Upper Cretaceous (Providence and Ripley, undifferentiated)~~~~~~_ 59

40 52 308 400 640 770 966 1,025

WELl, LOGS OF THE COASTAL PLAIN OF GEORGIA

175

Potential 'Vater-Bearing Zones:

Thickness (feet)

Limestone

- -------------------------------------------------------------------------

256

Sand: fine to coarse-grained ___________________________________________________

10

Sand: fine to coarse-grained

______________ _ ____________________________ 15

Sand: fine to coarse-grained

_____________________________________________ _

63

Sand: fine to coarse-grained_________________________________________________________

40

Limestone ___ ------------------------------------------------------------------------------------------------ 90 Sand: fine to coarse-grained__________________________________________________________________ 26

Sand: fine to coarse-grained, indurated_______________________________________________ 25

Depth (feet)
308 360 450 538 590 940 966 1,025

DOUGHERTY COUNTY

Location: 5.12 mi. west of Dougherty-Worth County Well No.: GGS 261

line and 1 mi. south of Atlantic Coast Line R.R.

Elev.: 204

Owner: No.3 U. S. Marine Corps

Driller: Layne-Atlantic Company

Drilled: February 1952

Thickness Depth

(feet)

(feet)

---------------------------------------

No samples ______________________

20

20

In Residuum:

Clay: mottled, sandy, limonitic, and fragments of residual

limestone

20

40

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white to cream, fossiliferous (macroshells, bryo-

zoan remains, Ostracods, and some Foraminifera); denser

(more calcitized) and sandier with depth _

200

240

Middle Eocene: Claiborne Group: Lisbon Formation:

Sand: fine to coarse-grained, sparsely phosphatic, fossilifer-

ous at certain levels (macroshells) ; interbedded marl,

light-gray to cream, somewhat sandy, finely glauconitic,

fossiliferous (bryozoan remains, Ostracods, and Foramini-

fera) ; limestone, light-gray, sandy, finely glauconitic, fos-

siliferous (macroshells and some Foraminifera)

110

350

Cibicides westi at 270-290. Operculinoides sp., Asterocyclina sp., Cibicides pseudoungmianus var. lisbonensis at 290-310.

176

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Tallahatta Formation:

Thickness Depth

(feet)

(feet)

Sand: fine to coarse-grained, phosphatic, fossiliferous at

certain levels (abundant macroshells) ; interbedded marl,

yellowish-green, somewhat sandy, micaceous, slightly car-

bonaceous, fossiliferous (some Foraminifera) ; limestone,

light-gray, dense (much calcitized), sandy, coarsely glau-

conitic, cherty at depth, fossiliferous (macroshells) ________________ 266

616

Cibicides tallahattensis at 473-477.
Valvulineria danvillensis var., Valvulineria jacksonensis var., Cibicides tallahattensis, Spiroplectammina sp., Discorbis sp. at 477-493.

Lower Eocene: Wilcox Group (Undifferentiated):

Marl: dark-brown, silty, micaceous, glauconitic, carbonaceous, pyritiferous, fossiliferous (Foraminifera at certain levels)_ 74
Anomalina umbonifera, Cibicides howelli at 616-620. Valvulineria cf. V. wilcoxensis at 640-660.

Sand: fine to medium-grained, coarser grained at depth,

glauconitic -------------------------------------------------------------- _________________________ _ 30

720

Paleocene: Midway Group: Clayton Formation:

Sand: fine-grained, coarser grained with depth, somewhat

indurated at certain levels, glauconitic, fossiliferous (macro-

shells and Foraminifera); interbedded marl, dark-gray to

black, somewhat fissile but blocky at certain levels, carbo-

naceous, finely micaceous, fossiliferous

60

780

Robulus midwayensis, Eponides lotus, Globulina gibba, Anomalina acuta, Alabamina wilcoxensis, Gyroidina aequilateralis, Cibicides alleni at 720-740.
Operculinoides catenula at 740-760.

Limestone: white, dense (much calcitized), sandy, coarsely

glauconitic, fossiliferous (macroshells) ____ --------------------------------- 15

795

Marl: black, fissile, carbonaceous, finely micaceous, fossilifer-

ous (some Foraminifera) _______ -------------------------------------------------------- 5

800

Limestone: light-gray, dense (much calcitized), sandy, glau-

conitic, fossiliferous (fragments and molds of macroshells,

bryozoan remains, Ostracods and some Foraminifera) __________ 98

898

Sand: fine to coarse-grained, rather angular____________________________________ 24

922

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

177

Thickness (feet)
Upper Cretaceous: Providence and Ripley Formations (Undifferentiated):

Sand: fine to medium-grained, pyritiferous; interbedded

marl, bluish-gray, silty, micaceous, pyritiferous, fossili-

ferous (macroshells, Ostracods, and Foraminifera) ________ _

30

Anomalina pseudopapillosa, Gaudryina sp. at 921-941.

Depth (feet)
952

Indurated sand: fine to coarse-grained_____________________

18

970

Sand: fine to medium-grained; interbedded marl, bluish-gray, silty, micaceous, pyritiferous, fossiliferous (macroshells) _____ 30

1,000

Summary:

No samples ---------------

----------------------------------- -------------------------------- 20

In Residuum _____________ --------------------------------------------------------------------------------- 20

Upper Eocene (Ocala limestone) __________________ ----------------------------------

200

Middle Eocene (Lisbon formation)----------------------------------------------

110

Middle Eocene (Tallahatta formation)--------------------------------------

266

Lower Eocene (Wilcox group, undifferentiated) __________________ _

104

Paleocene (Clayton formation) ------------------------------------------------------------- 202

Upper Cretaceous (Providence and Ripley, undifferentiated) ____ 78

20 40 240 350 616 720 922 1,000

Potential Water-Bearing Zones:

Limestone ________ ______ ________ ______________

_________________

200

240

Sand: fine to coarse-grained_____ ______________

________________ _

10

250

Sand: fine to coarse-grained____

-------------------------------------- __ 20

350

Sand: fine to coarse-grained _______________________________________________________________ 18

383

Sand: fine to coarse-grained__________________________________________________________________ 30

470

Sand: fine to coarse-grained ______________________________________________________________

56

550

Sand: fine to coarse-grained _----------------------------------------------------------------- 15

720

Limestone _________________________________ -----------------------------------------------------

98

898

Sand : fine to coarse-grained________________________________________

24

922

178

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

DOUGHERTY COUNTY
Location: 2.6 mi. west of Dougherty-Worth County Well No.: GGS 290 line and 0. 75 mi. south of Atlantic Coast Line R.R. Elev.: 258
Owner: No.2 U.S. Marine Corps Driller: Layne-Atlantic Company Drilled: March 1952
Thickness Depth
----------------------------------------------------------(f-e-e-t)- (feet)

Summary:

Residuum -------------------------------- ------------------------------------------------------------------- 70

Upper Eocene (Ocala limestone)_________________________

_______________________ 260

Middle Eocene (Lisbon formation)_

____________________ 100

Middle Eocene (Tallahatta formation) ________________ --------------------------------- 240

Lower Eocene (Wilcox group, undifferentiated)_

150

Paleocene (Clayton formation) ________ -------------------

217

70 330 430 670 820 1,037

Potential Water-Bearing Zones:

Limestone

245

Sand: fine to coarse-grained____________________________________________________________________ 36

Sand: fine to coarse-grained____________________________________________________________________ 28

Sand: fine to coarse-grained_______________________________

64

Sand: fine to coarse-grained_______________ -----------------------------

50

Sand: fine to coarse-grained_______________________________ -------------------------------

18

Limestone ----------------------------------------------- --------------------------------------------- 90

Sand: fine to coarse-grained______

------------------------------ 18

315 406 498 572 630 668 1,000 1,026

Remarks: Cuttings of extremely poor quality.

DOUGHERTY COUNTY

Location: In Albany Owner: No. 15 City of Albany Driller: Layne-Atlantic Company Drilled: November 1954

Well No.: GGS 405 Elev.: 197

Thickness Depth

(feet)

(feet)

-------------------------------

Residuum:

Sand: fine to coarse-grained; some residual limestone, yellow,

dense (much calcitized), fossiliferous (macroshells, echi-

noid and bryozoan remains, and Foraminifera) ______________ _

20

20

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

179

Upper Eocene: Jackson Group: Ocala Limestone:

Thickness Depth

(feet)

(feet)

Limestone: cream, saccharoidal (much calcitized), somewhat

sandy, fossiliferous (Foraminifera at certain horizons) __

130

150

Camerina striatmeticulata at 50-60.

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: white to bluish-gray, granular (in texture),

sandier with increased depth, finely phosphatic, sparsely

but coarsely glauconitic, fossiliferous (macroshells, abun-

dant bryozoan remains, Ostracods, and some Foramini-

fera); interbedded marl, light-gray, fossiliferous (bryo-

zoan remains and Foraminifera)

35

185

Cibicides pseudoungerianus var. lisbonensis, Cibicides westi at 160-170.
Asterocyclina rnonticellensis, Operculinoides sp. at 190-200.

Limestone: as above, but sandier at depth

25

210

Tallahatta Formation: Sand: fine to coarse-grained; some limestone, as above __ Cibicides tallahattensis at 230-240.

35

245

Limestone: bluish-gray, dense (much calcitized), sandy,

coarsely but sparsely glauconitic, fossiliferous (abundant

coquina and bryozoan remains); interbedded marl, light-

gray, fossiliferous (Foraminifera) __

75

320

Cibicides tallahattensis, Cibicides blanpiedi at 261-270.

Sand: fine to coarse-grained, phosphatic; interbedded marl,

dark-gray, silty, micaceous, fossiliferous (Foraminifera) ;

limestone, white, crystalline (much calcitized), sandy,

coarsely glauconitic, phosphatic, fossiliferous (macroshells) _ 92

412

Marl: dark-brown, fissile, carbonaceous, micaceous, fossilifer-

ous (Foraminifera) ; interbedded sand, fine to coarse-

grained, phosphatic

------------------------------------------------------------ 28

440

Claystone: dark-gray, dense, somewhat cherty, sandy, abun-

dantly glauconitic ------------------------------------------ ------------------ ---------------- 4

444

180

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Lower Eocene: Wilcox Group (Undifferentiated):

Thickness Depth

(feet)

(feet)

Marl: dark-gray, carbonaceous, micaceous, pyritiferous, fos-

siliferous (Foraminifera) -------------------------------------------------------------- 4

448

Sand: fine to medium-grained, abundantly glauconitic; inter-

bedded marl, dark-gray, carbonaceous, micaceous, pyriti-

ferous, fossiliferous ------------------------------------------------------------------------- 19

46'7

Valvulineria wilcoxensis, Valvulineria scrobiculata, Eponides dorfi, Alabamina wilcoxensis, Siphonina wilcoxensis, Cibicides howelli at 445-450.

Marl: dark-gray, silty, micaceous, pyritiferous_____________________________ 51

518

Sand: fine to coarse-grained, angular, with grains of pale-

green quartz; interbedded marl, dark-gray, fissile, mica-

ceous, carbonaceous, pyritiferous___________________________________________________ 52

570

Paleocene: Midway Group: Clayton Formation:

Limestone: white, dense (much calcitized), sandy, coarsely

glauconitic, fossiliferous (casts and molds of macroshells,

echinoid and bryozoan remains, and some Foraminifera) ________ 4

574

Operculinoides catenula, Robulus midwayensis at 570-580.

Sand: fine grained, indurated at certain horizons, finely glau-

conitic; interbedded marl, black, fissile, micaceous, carbo-

naceous, fossiliferous (some Foraminifera) ___

24

598

Limestone: light-gray, crystalline (much calcitized), sandy,

coarsely glauconitic, pyritiferous, fossiliferous (fragments

and molds of macroshells, bryozoan remains, Ostracods,

and Foraminifera) -------------------------------------------- ___________________________ 108

706

Sand: fine to coarse-grained, angular; interbedded marl,

light-gray, silty, micaceous; some limestone, as above ______________ 30

736

Upper Cretaceous: Providence and Ripley Formations (Undifferentiated):

Marl: light-gray, silty, chalky, micaceous, pyritiferous, fossiliferous (macroshells, Ostracods, and Foraminifera); interbedded sand, fine to medium-grained, pyritiferous, micaceous -------------------------------------------------------------------------------------------------- 48

Anomalina pseudopapillosa at 734-754.

Limestone: cream, somewhat sandy, fossiliferous (macroshells) 29

813

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

181

Thickness (feet)
Sand: fine to coarse-grained, pyritiferous, micaceous, interbedded marl, gray, silty, chalky, micaceous, pyritiferous ________ 63
Marl: bluish-gray, chalky, micaceous, pyritiferous, fossiliferous (macroshells, Ostracods, and Foraminifera); interbedded sand, fine to medium-grained, pyritiferous, micaceous ---------------------------------------------------------------------------------------------------- 99
Globotruncana sp., Gaudryina rudita at 948-975.

Depth (feet)
876
975

Summary:

Residuum ---------------------------------------------------------------------------------------------------- 20

20

Upper Eocene (Ocala limestone)------------------------------------------------------------ 130

150

Middle Eocene (Lisbon formation)-------------------------------------------------------- 60

210

Middle Eocene (Ta!lahatta formation)-------------------------------------------------- 234

444

Lower Eocene (Wilcox group, undifferentiated)-------------------------------- 126

570

Paleocene (Clayton formation)---------------------------------------------------------------- 166

736

Upper Cretaceous (Providence and Ripley, undifferentiated)__________ 239

975

Potential Water-Bearing Zones:

Limestone --------------------------------------------------------------------------------------------------- 130

150

Sand ---------------------------------------------------------------------------------------------------------- 35

245

Sand: fine to coarse-grained____________________________________________________________________ 92

412

Sand: fine to coarse-grained___________________________________________________________________ _ 19

467

Sand: fine to coarse-grained____________________________________________________________________ 52

570

Limestone --------------------------------------------------------------------------------------------------- 108

706

Sand: fine to coarse-grained ------------------------------------------------------------------- 30

736

Limestone --------------------------------------------------------------------------------------------------- 29

813

Sand: fine to coarse-grained________

63

876

Location: About 6 mi. northwest of Saffold, Land Lot 406, 26th Land District
Owner: No. 1 A. C. Chandler Driller: Mont Warren eta! Drilled: October 1943

EARLY COUNTY
Well No.: GGS 121 Elev.: 187
(derrick floor)

Thickness Depth

(feet)

(feet)

No samples ____

615

615

In Paleocene: Midway Group: Clayton Formation:
Indurated sand: gray, fine-grained, somewhat argillaceous, glauconitic, fossiliferous (casts of megafossils at certain

182

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

levels, Ostracods, and Foraminifera); sand; medium to

coarse-grained, angular, glauconitic, grains of light-green

quartz_

___________

----- --------------------- 15

Depth (feet)
630

Indurated sand: as above; interbedded marl, dark-gray to

black, somewhat fissile, carbonaceous, micaceous (finely

disseminated) ; limestone, cream, dense, crystalline, glauco-

nitic, sandy, fossiliferous (some macroshells, bryozoan re-

mains, Ostracods, and Foraminifera) __

_______________ 315

Operculinoides eatenula, Pseudophragmina stephensoni at 660-675. Robulus midwayensis at 675-690. Robulus midwayensis common at 750-765.

Limestone: gray to cream, dense, crystalline, glauconitic,

sandy, cherty at certain levels, fossiliferous (some macro-

shells, bryozoan remains, Ostracods, and Foraminifera);

interbedded marl, dark-gray to black, carbonaceous, mica-

ceous (finely disseminated)_

___________________ 150

Marl: gray, somewhat indurated, fissile, carbonaceous, mica-

ceous, fossiliferous (Ostracods and Foraminifera); inter-

bedded limestone, as above _ _________________

110

946
1,096 1,206

Upper Cretaceous: Post-Eutaw (Undifferentiated):
Marl: dark, bluish-gray to brown, gray and chalky at depth, silty, micaceous, abundantly glauconitic, carbonaceous, pyritiferous, fossiliferous (at certain horizons macroshells, Ostracods, and Foraminifera) _ ________ ________________________________ 1,255
Globotruncana sp., Guembelina striata at 1213-1228. Bolivinoides decorata at 1268-1283. Planulina texana common at 1553-1569. Kyphopyxa christneri at 1591-1605. Vaginulina texana at 2108-2123.

2,460

Eutaw Formation (Restricted) :

Indurated sand: fine to medium-grained, micaceous, glaucon-

itic at depth, phosphatic, fossiliferous (oyster shells) ____ _

130

Tuscaloosa Formation:
Sand: fine to coarse-grained, subangular, arkosic, micaceous; interbedded clay, pale to dark-yellowish-green, laminated, silty, finely micaceous, somewhat iron-stained __________________ _ 250

2,590 2,840

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

183

Thickness (feet)

Sand: as above; interbedded shale, dark-gray to black, fissile,

silty, carbonaceous, finely micaceous

125

Depth (feet)
2,965

Shale: as above; interbedded sand, fine-grained, micaceous

120 3,085

Indurated sand: fine to medium-grained, subangular, glauconitic, micaceous

20 3,105

Sand: fine to coarse-grained, subangular, arkosic, micaceous~~~~~~ 62 3,167

Sand: as above; interbedded clay, dark-gray to greenishgray with red to purple streaks (mottled), sandy, micaceous, sideritic ~-~~~~~~ ~~~~~~~~- ~~~~~~~-~~~~~~ ~~~~~~~~-~~~~~----~~ ~---~----~---- ~~~--~-------- 48

3,215

Sideritic nodules common to abundant at 3167-3182.

Lower Cretaceous(?) (Undifferentiated):

Sand: coarse-grained, subangular to subrounded, varicolored,

cherty, arkosic; interbedded clay, mottled, somewhat waxy

in appearance, very micaceous, sandY-~-~

~~~~----~~-----~~ ~ 161

1 3,376

Summary:

No samples _~~-~~~-~--- __ ~~~~~~~-~----------~~

_ --~~~~----~-----~-

In Paleocene (Clayton formation) -~~~ ~~~~ ______

Upper Cretaceous (post-Eutaw, undifferentiated)--~

Upper Cretaceous (Eutaw formation, restricted)

Upper Cretaceous (Tuscaloosa formation) _-~

In Lower Cretaceous ( ?) (undifferentiated)_

615 590 ~ ~- 1,255 - ~- ------ 130 625 161

615 1,205 2,460 2,590 3,215 1 3,376

Limestone

Potential Water-Bearing Zones:

150 1,095

Remarks:
On the basis of the above log good aquifers are scarce. In this part of Georgia the entire post-Tuscaloosa Cretaceous section has become marine, hence has "siltedup", leaving very few, if any, well developed sands that can be utilized as sources of ground water. Consequently the first good water-bearing sands occur in the more deeply-buried Tuscaloosa formation, beginning at a depth of 2590. Above the Cretaceous the only reliable, relatively shallow-lying aquifers are the Clayton formation (noted above) and the lower Wilcox sands. The latter are not reported in this well log because the samples were not collected until a depth of 615 had been reached.

'Not reported below 3,376. Total depth 7,320 feet.

184

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: In Recreation Area, Kolomoki State Park Owner: No; 1 Kolomoki State Park Driller: V. C. Mickle Drilled: 1940

EARLY COUNTY
Well No.: GGS 138 Elev.: 272

Thickness Deptb.

(feet)

(feet)

Residuum:

Clay: bluish-gray to red (mottled), sandy, limonitic; some

residual limestone, more abundant with depth ________________

35

35

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: light-gray, dense, rather massive, crystalline,

sandy, cherty, glauconitic (finely disseminated grains), fos-

siliferous (macroshells and some bryozoan remains); in-

terbedded marl, light-gray, silty, micaceous, somewhat

carbonaceous, fossiliferous (some Foraminifera) ______________________ 75

110

Cibicides westi at 65-75.

Tallahatta Formation:

Sand: fine to medium-grained, subangular, phosphatic; inter-

bedded clay, dark-green, sandy, micaceous _____ --------------------------- 78

188

Limestone: light-gray, dense, crystalline, massive, sandy,

coarsely glauconitic, fossiliferous (fragments and molds of

Gastropods) __________________________ ---------------------------------------------------

10

198

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: dark-brown, silty, carbonaceous, micaceous, pyritifer-

ous, fossiliferous (Foraminifera at depth)

___________________ _ 190

388

Robulus sp., Eponides dorfi, Alabamina wilcoxensis, Valvulineria scrobiculata at 218-228.

Sand: fine to medium-grained, subangular, abundantly glau-

conitic _---------------------------------------

10

398

Paleocene: Midway Group: Clayton Formation:

Sand: medium to coarse-grained, subangular grains of pale-

green quartz _____________ _

------------------------------------------ 30

428

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

185

Thickness (feet)
Indurated sand: gray, fine-grained, glauconitic (finely disseminated grains) ; interbedded marl, dark-gray to black, fissile, carbonaceous, micaceous, fossiliferous (Foraminifera) 40
Pseudophragmina stephensoni at 438-448. Robulus midwayensis at 448-458.
Limestone: light-gray to white at depth, crystalline, much calcitized, sandy, fossiliferous (some macroshells, bryozoan remains, and Foraminifera) ---------------------------------------- _________________ 106

Depth (feet)
468
574

Summary:

Residuum _---------------------------------------------------------------------------------------------- 35

35

Middle Eocene (Lisbon formation) ------------------------------------------------------- 75

110

Middle Eocene (Tallahatta formation) ___ ---------------------------------------------- 88

198

Lower Eocene (Wilcox group, undifferentiated)________________________

200

398

Paleocene (Clayton formation)--------------------------------------------------- ------,- 176

57 4

Potential Water-Bearing Zones:

Sand: fine to coarse-grained_______ ------------------------------------------- ______________ 58

168

Sand: fine to coarse-grained____________________________________________________________________ 30

428

Limestone __________________________ --------------------------------------------------- ------------------- 100

574

Location: In Kolomoki State Park Owner: No.2 Kolomoki State Park Driller: Layne-Atlantic Company Drilled: August 1951

EARLY COUNTY Well No.: GGS 234

Thickness Depth

(feet)

(feet)

Residuum:

Clay: bluish-gray to red (somewhat mottled), sandy, limonitic___ 18

18

Sand: coarse-grained, angular, and some residual limestone

15

33

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: light-gray, dense, rather massive, glauconitic,

sandy; interbedded marl, light-gray, silty, micaceous, some-

what carbonaceous, sandy, fossiliferous (Foraminifera) ________ 32

65

Cibicides westi at 45-65.

186

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Tallahatta Formation: Sand: fine to coarse-grained, angular, phosphatic

Thickness Depth

(feet)

(feet)

80

145

Summary:

Residuum __

________________

Middle Eocene (Lisbon formation) Middle Eocene (Tallahatta formation) ______

33

33

32

65

80

145

Potential Water-Bearing Zones: Sand: fine to coarse-grained

80

145

Location: In Blakely Owner: City of Blakely Driller: Beasely Drilling Company Drilled: September 1952

EARLY COUNTY
Well No.: GGS 321 Elev.: 270

Thickness Depth

(feet)

(feet)

No samples __

320

320

In Middle Eocene: Claiborne Group: Tallahatta Formation:

Sand: fine to coarse-grained, subangular, glauconitic, fossili-

ferous (macroshells and some Foraminifera) _______

40

360

Valvulineria jacksonensis var., Valvulineria danvillensis var., Asterigerina lisbonensis, Cibicides tallahattensis at 320-360.

Limestone: white, dense, nodular, cherty__

?

360

No samples ______ -------------------------------------------------- ______________

40

400

In Lower Eocene: Wilcox Group (Undifferentiated):

Clay: dark-gray, silty, carbonaceous, micaceous, fossiliferous

(some Foraminifera) -------------------------------------------- ----------------------- 151

551

Robulus sp., Valvulineria scrobiculata, Siphonina wilcoxensis at 400-551.

Sand: fine to coarse-grained, subangular, somewhat indu-

rated at depth, abundantly glauconitic, grains of pale-

green quartz __ ----------------------------------------- ----------------------------------- 19

570

No samples_

30

600

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

187

In Paleocene: Midway Group,: Clayton Formation:

Thickness Depth

(feet)

(feet)

Indurated sand: fine to coarse-grained, subangular, rather

dense and nonporous

?

600

No samples __________________________________

60

660

Limestone: light-gray, extremely dense and crystalline, sandy,

fossiliferous (macroshells, bryozoan remains, and some

Foraminifera) ______________

--------------------------------- _________________ ?

660

Nodosaria affinis, Robulus midwayensis at 660.

Summary:

No samples ___

------------------------------- _______________

320

320

In middle Eocene (Tallahatta formation) _ ______________ _

No samples _____________

______________________

40

360

40

400

In lower Eocene (Wilcox group, undifferentiated)

170

570

No samples ______

_____ ________

_________________ _

-----------------

30

600

In Paleocene (Clayton formation) __________________________________

60

660

Potential Water-Bearing Zones: Limestone occurring below depth of 660.

Location: 1.2 mi. north of Saffold Owner: No. 1 Jakin Elementary School Driller: E. J. Carlisle Drilled: August 1953

EARLY COUNTY
Well No.: GGS 351 Elev.: 201

Thickness Depth

(feet)

(feet)

Residuum:

Clay: gray to pink to purple (mottled), very sandy, limonitic

45

45

Sand: fine to coarse-grained, subangular, arkosic__

30

75

Clay: tan, very sandy, limonitic, with scattered fragments of

residual limestone .

------------------ ____ -------------- 15

90

Sand: medium to coarse-grained, subangular, arkosic; some

clay, as above__ ------------------------------------------------------------------- ______________ 45

135

188

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

In Middle Eocene: Claiborne Group: Lisbon Formation:

Thickness Deptl..

(feet)

(feet)

Clay: dark-green, somewhat indurated and tough, coarsely

glauconitic, sandy, fossiliferous (small Gastropods, Ostra-

cods, and Foraminifera)

105

240

Siphonina claibornensis, Cibicides westi, Asterocyclina sp. at 135-150.

Lepidocyclina sp., and Operculinoides sp. common to abundant at 150-165.

Limestone: yellow, dense and crystalline, sandy, coarsely

glauconitic, fossiliferous (a coquina) ________ _____________

45

286

Tallahatta Formation:

Sand: coarse-grained, subangular clay, tan, sandy; some

limestone, yellow, rather soft and leached, sandy _____________________ 15

300

Claystone (or argillaceous sandstone): dark-green, extremely

dense and somewhat crystalline, coarsely glauconitic, cherty

(a buhrstone), carbonaceous, fossiliferous (some macro-

shells) ; clay, gray to tan to pink (mottled), sandy __________ ____ 120

420

Indurated sand: fine to medium-grained, subangular, coarse-

ly glauconitic -------------------------------------- --------------------------------------------- 12

432

Limestone: gray, very dense and massive, crystalline, sandy,

coarsely glauconitic, fossiliferous (fragments, casts and

molds of Pelecypods) ----------------------------------- ------------------------------------ 20

462

Lower Eocene: Wilcox Group (Undifferentiated):

Sand: fine to medium-grained, subangular, somewhat in-

durated at certain levels, coarsely but abundantly glauconitic__ 50

502

Limestone: gray, dense and crystalline, coarsely and abun-

dantly glauconitic, fossiliferous (megafossils); some clay,

dark-brown, silty, lignitic, micaceous, pyritiferous, fossili-

ferous (Foraminifera at certain levels) __ ----------------------------------- 20

522

Clay: as in above sample__________________________________ ----------------------------------- 236

768

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

189

Paleocene: Midway Group: Clayton Formation:

Thickness (feet)

Indurated sand: fine to medium-grained, subangular, glauconitic, fossiliferous (macroshells, Ostracods, and Foraminifera) ---------------------------------------------------------------------------------------------------- 70

Macroshells abundant at 768-778. Discorbis midwayensis at 768-778. Operculinoides catenula common at 788-798.

Limestone: gray, nodular, sandy, fossiliferous (some macroshells, bryozoan remains, and Foraminifera) ---------------------------- 22

Pseudophragmina stephensoni at 838-850.

Depth (feet)
828
850

Summary:

Residuum _

----------------------------- __________________________________________-------------- 135

135

In middle Eocene (Lisbon formation)---------------------------------_ --------------- 150

285

In middle Eocene (Tallahatta formation)---------------------------

167

452

Lower Eocene (Wilcox group, undifferentiated) ______________

306

758

Paleocene (Clayton formation) ___________________________________________

92

850

Potential Water-Bearing Zones:

Sand: fine to medium-grained__________________________________________________________________ 50

502

Indurated sand grading downward into limestone_____ ________________________ 92

850

Remarks:
The main body of the Clayton formation proper lies below total depth of this well. For abundant ground-water supplies the well should be drilled deeper into the Clayton formation.

Location: 1 mi. south of road intersection in Damascus, east side of Highway 45, between highway and Seaboard Airline R.R.
Owner : No. 1 Kestler School Driller: E. J. Carlisle Drilled: August 1953

EARLY COUNTY
Well No.: GGS 358 Elev.: 229

Thickness Depth

(feet)

(feet)

Residuum:

Clay: bluish-gray to purple to red (mottled), sandy, limonitic,

residual limestone at depth ------------------------------------------------------------ 85

85

190

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Eocene: Jackson Group: Ocala Limestone:

Thickness Depth

(feet)

(feet)

Limestone: yellow, much calcitized, dense, crystalline, fossil-

iferous (macroshells, echinoid and bryozoan remains, and

Foraminifera) _____________

_______________ ______________________ 46

131

Operculina cf. 0. mariannensis, Lepidocuclina sp., A mphistegina pinarensis var. at 120-131.

Summary:

Residuum ___ _

_____________ _

Upper Eocene (Ocala limestone) __

85

85

46

131

Limestone

Potential Water-Bearing Zones:

21

131

Remarks: Additional aquifers occur below total depth of this well.

Location: 7 mi. southeast of Blakely, west side of Highway 27, at dwelling
Owner: No.1 Farmers Gin and Warehouse Company Driller: Layne-Atlantic Company Drilled: June 1955

EARLY COUNTY
Well No.: GGS 437 Elev.: 178

Thickness Depth

(feet)

(feet)

Residuum:

Sand: tan, argillaceous, fine to coarse-grained, subangular,

limonitic

4

4

Clay: gray to pink (mottled), very sandy, limonitic_____________________ 19

23

Clay: gray to tan to dark-brown, with red streaks (somewhat

mottled), very sandy, abundantly limonitic, and frag-

ments of residual limestone --------------------------------- ___________________________ 21

44

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

191 .

Upper Eocene: Jackson Group: Ocala Limestone:

Thickness (feet)

Limestone: yellow, somewhat nodular, increasingly calcitized
and crystalline with depth, fossiliferous (macroshells, bryozoan remains, and some Foraminifera) ______________________________________ 48

Operculina mariannensis, Asterocyclina sp., Gypsina globula at 44-59. Camerina striatoreticulata at 70-92.

Depth (feet)
92

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: dark-gray, dense and crystalline, very sandy,

coarsely glauconitic, fossiliferous (macroshells, bryozoan

remains, and Foraminifera) ; dolomitic limestone, light-

brown, saccharoidal, carbonaceous; marl, gray, silty, fos-

siliferous (Foraminifera) __ ------------------------------------ ______________ 16

108

Siphonina claibornensis, Cibicides westi at 92-104.

Sand: somewhat indurated and dense, fine to coarse-grained,

subangular, phosphatic

32

140

Clay: dark-green, sandy, fossiliferous (macroshells, bryo-

zoan, and Foraminifera)

22

162

Tallahatta Formation:

Sand: fine to medium-grained, subangular, phosphatic

24

186

Limestone: gray to light-brown, massive, very sandy, glaucon-

itic, phosphatic, fossiliferous (a coquina and some bryo-

zoan remains)

____ __ _____ _ ___ _______ ________

21

207

Sand: fine to coarse-grained, subangular, phosphatic

95

302

Clay: yellowish-green, progressively more indurated with

depth (a claystone at depth), very sandy, phosphatic,

fossiliferous (fragments, casts and molds of Gastropods)________ 23

325

Sand: fine to medium-grained, subangular, somewhat in-

durated at certain levels, abundantly glauconitic, fossili-

ferous (macroshells) ___________ ________________

----------------------------- 19

344

Limestone: gray, coarsely glauconitic, sandy, fossiliferous

(macroshells)

_______ ____ ________________

12

356

Lower Eocene: Wilcox Group (Undifferentiated):

Marl: dark-gray, sandy, carbonaceous, micaceous, pyritifer-

ous, fossiliferous (Foraminifera at certain levels) ______ _

192

548

Robulus sp., Marginulina sp., Eponides dorfi, Discorbis sp., Valvulineria scrobiculata, Cibicides howelli, Anomalina sp. at 350-371.

192

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Sand: fine to coarse-grained, subangular, glauconitic _

Thickness (feet)
24

Depth (feet)
572

Paleocene: Midway Group: Clayton Formation:

Sand: fine to medium-grained, somewhat indurated at certain

levels, fossiliferous at depth (macroshells, echinoid and

bryozoan remains, Ostracods, and Foraminifera) ____

46

Nodosaria affinis, Robulus rnidwayensis, Eponides lotus, Guttulina sp. at 596-617.

Indurated sand: as above; interbedded clay, gray, silty, car-

bonaceous, micaceous

45

Pseudophragmina stephensoni at 617-627. Operculinoides catenula common at 638-663.

Limestone: light-gray, rather dense, progressively sandier

with increased depth, fossiliferous (macroshells, bryozoan

remains, and some Foraminifera) ____________________

21

Indurated sand: gray, fine-grained, subangular, glauconitic

(finely disseminated grains) __

30

Sand: fine to coarse-grained, subangular; interbedded clay,

light-gray, silty, somewhat indurated, fissile; some indu-

rated sands, as above _____

158

Sand: fine to coarse-grained, subangular; interbedded clay,

gray, chalky, micaceous ____

_________________ __________________________ 102

Indurated sand: fine to coarse-grained, subangular, fossili-

ferous (a coquina)

42

Sand: fine to coarse-grained, subangular; interbedded clay,

as above

13

618
663
684 714 872 974 1,016 1,029

Upper Cretaceous: Providence and Ripley Formations (Undifferentiated):

Sand: fine to coarse-grained, subangular; interbedded marl, gray, chalky, micaceous, fossiliferous (some Foraminifera) ____ 91

1,120

Guembelina sp., Globotruncana cretacea at 1029-1049.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

193

Summary:

Thickness (feet)

Residuum ------ - -- - - -- -

----------- ---

44

Upper Eocene (Ocala limestone)____

____ __________ _________________ _

48

Middle Eocene (Lisbon formation)__

_______________ _

70

Middle Eocene (Tallahatta formation)____ ______________

194

Lower Eocene (Wilcox group, undifferentiated) ___ _

216

Paleocene (Clayton formation) ________________________________

457

Upper Cretaceous (Providence and Ripley, undifferentiated)

91

Depth (feet)
44 92 162 356 572 1,029 1,120

Potential Water-Bearing Zones:

Sand: fine to coarse-grained _ Sand: fine to coarse-grained________________

Limestone ----- -----

--------------

Sand: fine to coarse-grained

95

302

24

572

21

684

42 1,016

Location: 1,738 ft. south and 11ft. west of northeast corner of Land Lot 341, 26th Land District
Owner: No. 1 R. V. Ellis Driller: Sun Oil Company

EARLY COUNTY
Well No.: GGS 483 Elev.: 163
(derrick floor)

Thickness Depth

(feet)

(feet)

No samples ___________________________________ _

80

80

In Middle Eocene: Claiborne Group: Lisbon Formation:

Sand: fine to coarse-grained, angular; some marl, gray, silty,

micaceous, fossiliferous (Radiolaria and some Foramini-

fera); limestone, yellow to light-gray at depth, crystalline,

much calcitized, coarsely glauconitic, sandy, fossiliferous

(megafossils and some Foraminifera) __ ____________ _______________________ 120

200

Sigmoilina sp., Nonion sp., Radiolaria at 80-120. Cibicides pseudoungerianus var. lisbonensis, Operculinoides sp. at 120-160. Asterocyclina sp. at 160-200.

Tallahatta Formation:

Marl: light-gray, silty, micaceous, fossiliferous (some Fora-

minifera); limestone, as above______________________________________________________ 80

280

Valvulineria jacksonensis var., Cibicides tallahattensis at 200-240.

194

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Limestone: light-gray, extremely dense, sandy, phosphatic,

coarsely glauconitic, fossiliferous (fragments and molds of

megafossils)

__________ -------------------------- __

40

Depth (feet)
320

Lower Eocene: Wilcox Group (Undifferentiated):

Marl: dark-brown, silty, carbonaceous, micaceous, pyritifer-

ous, fossiliferous (some Foraminifera at certain levels)

320

640

Valvulineria wilcoxensis at 320-360. Eponides dorfi, Valvulineria wilcoxensis at 360-400.

Sand bed 560-620.

Paleocene: Midway Group: Clayton Formation:

Indurated sand: fine-grained, gray, finely glauconitic, fossil-

iferous (megafossils, bryozoan remains, Ostracods, and

Foraminifera)

80

Operculinoides catenula, Asterocyclina sp., Robnlus midwayensis at 680-720.

Limestone: yellow, gray to white at depth, very dense, crys-

talline, sandy, coarsely glauconitic, pyritiferous, fossili-

ferous (megafossils, bryozoan remains, and some Fora-

minifera) _ _____

_______________

_ _ _ _ _________ _ 320

Marl: light-gray, somewhat indurated, chalky, micaceous, fos-

siliferous (Foraminifera1 ) _

80

Globorotalia sp., Pseudoglandulina sp. at 1040-1080.

720
1,040 1,120

Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):

Marl: gray, chalky, micaceous, pyritiferous, glauconitic, fos-

siliferous (common to abundant Foraminifera)

__ 1,200

Globotruncana cretacea at 1120-1160. Globotruncana cretacea common, Guembelina sp., Loxostoma plaitum, Dorothia sp., Bolivinoides decorata at 11601200. Planulina texana at 1360-1400. Kyphopyxa christneri at 1520-1560. Vaginulina texana at 2040-2080.

Marl: as above, but somewhat sandier____

80

No samples_

10

1Tamesi fauna.

2,320
2,400 2,410

WELIJ LOGS OF THE COASTAL PLAIN OF GEORGIA

195

Thickness (feet)

Sand: fine to medium-grained, somewhat indurated, angular,

micaceous, glauconitic, phosphatic, fossiliferous (macro-

shells)

40

Depth (feet)
2,450

Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, a few grains of "rose

quartz"; interbedded clay, yellowish-green to purple (mot-

tled), sandy, micaceous

______________ 290

Clay or Shale: dark-gray to black, fissile, carbonaceous, micaceous (finely disseminated producing a speckled appearance), fossiliferous (imprints of megafossils at certain levels) 290

Sand: medium to coarse-grained, angular

30

Sand: coarse-grained, angular, arkosic, massive, a few grains

of "rose quartz"; interbedded clay, brick-red to dark-

green (mottled), waxy, sideritic, micaceous, sandy____

115

2,740
3,030 3,060
3,175

Summary:
No samples __ _ In middle Eocene (Lisbon formation) __ Middle Eocene (Tallahatta formation)_ Lower Eocene (Wilcox group, undifferentiated) __ _ Paleocene (Clayton formation)____ _________________ Upper Cretaceous (post-Tuscaloosa, undifferentiated) __ _ Upper Cretaceous (Tuscaloosa formation)

80 120 120 320 480 .1,330 725

80 200 320 640 1,120 2,450 3,175

Potential Water-Bearing Zones:
Sand: fine to medium-grained____ .. ______ _ Limestone

60

620

280 1,040

Location: 660ft. south, 666ft. east of northwest corner of Land Lot 146, 12th Land District
Owner: No. 1 Bennett and Langdale Driller: Humble Oil and Refining Company Drilled: May 1949

ECHOLS COUNTY
Well No.: GGS 189 Elev.: 181
(derrick floor)

Thickness Depth

(feet)

(feet)

No samples_

170

170

196

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

In Miocene (Undifferentiated):

Thickness (feet)

Limestone: white, calcitized, dense, sandy, sparsely phos-

phatic, cherty at certain levels___________________

____________________

40

Limestone: brown, somewhat dolomitized, much calcitized,

rather massive, sandy, sparsely phosphatic_____

_______________ 10

Limestone: cream, much calcitized, granular, very sandy __________ 20

Clay: considerably indurated, bluish-green, sandy

5

Depth (feet)
210
220 240 245

Oligocene (Undifferentiated):

Limestone: cream, much calcitized, dense, rather massive,

somewhat nodular, fossiliferous (bryozoan remains and

some Foraminifera) _______________

135

380

Dictyoconus1 sp. at 245-250. Quinqueloculina sp., Dictyoconus1 sp. at 250-255.

Limestone: light-gray, massive, much calcitized, somewhat

nodular, fossiliferous (some macroshells, echinoid and bryo-

zoan remains, and Foraminifera)

_______ _

60

440

Operculinoides sp. at 390-395.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, granular, somewhat loosely consolidated,

fossiliferous (Foraminifera)

________________ _

65

Pseudophragmina flintensis at 450-455.

No samples ____

795

In Middle Eocene: Claiborne Group (Undifferentiated):

Limestone: dark-brown, saccharoidal, somewhat dolomitized,

cherty at certain levels; interbedded limestone, cream, cal-

citized, granular, rather loosely consolidated, cherty, gypsi-

ferous, sparsely glauconitic ___

_______________________________________ _ 450

505 1,300
1,750

Lower Eocene: Wilcox Group (Undifferentiated):

Sand: fine to medium-grained, subangular, coarsely glauco-

nitic, fossiliferous (some Foraminifera)_ _

____________ _

30

Asterocyclina sp. at 1770-1780.

Limestone: cream, somewhat nodular, calcitized, cherty; interbedded clay, pale-greenish-gray, silty, micaceous ________________ 185

'Reworked ( ?l fossil of middle Eocene age.

1,780 1,965

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

197

Thickness (feet)
Sand: fine to medium-grained, subangular, somewhat indurated at certain levels, coarsely glauconitic, pyritiferous_____ 35

Depth (feet)
2,000

Limestone: cream, granular, somewhat loosely consolidated, cherty, fossiliferous (some Foraminifera at certain levels). 2915

2,295

Asterocyclina sp. common at 2000-2010.

Paleocene: Midway Group: Clayton Formation:

Clay: rather dark-greenish-gray, laminated, silty, micaceous__

50

Limestone: cream to gray, rather dense and calcitized, granular, somewhat loosely consolidated at depth, coarsely glauconitic, fossiliferous at certain levels (Foraminifera) _____________ 115

Asterocyclina sp. common at 2350-2360.

Marl: light-gray, silty, micaceous, sparsely fossiliferous

(some Foraminifera) ; interbedded limestone, as above

210

No samples __________

340

2,345 2,460
2,670 3,010

In Upper Cretaceous: Post-Eutaw (Undifferentiated):

Marl: light-gray, brownish-gray at depth, chalky, micaceous,

glauconitic, pyritiferous, fossiliferous (some megafossils,

Ostracods, and Foraminifera); interbedded sand at depth,

fine-grained, subangular to subrounded, micaceous, glauco-

nitic; sand, somewhat indurated at certain levels, sub-

angular to subrounded, micaceous, phosphatic, fossiliferous

at certain levels (some vertebrate remains such as fish

teeth and macroshells)

_____ ___ ______ ____ _________ __________________ 330

Kyphopyxa christneri at 3010-3020. Vaginulina texana at 3070-3080.

3,340

Eutaw Formation (Restricted) :

Sand: light-gray, fine-grained, subangular to subrounded,

phosphatic, micaceous, pyritiferous, fossiliferous at cer-

tain levels (fish teeth and abundant macroshells) __

70

Tuscaloosa Formation:

Clay: pale-green, laminated, micaceous, somewhat sandy; in-

terbedded sand, coarse-grained, subangular, micaceous,

limonitic __

------------- -------------------------------------------------- -

210

3,410 3,620

198

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Clay: dark-gray to black, laminated, somewhat fissile, silty,

micaceous (finely disseminated flakes imparting a speckled

appearance), carbonaceous; interbedded sand, fine-grained,

somewhat indurated at certain levels, subangular, very mi-

caceous, phosphatic and glauconitic at various levels

110

Depth (feet)
3,730

Sand: coarse-grained, subrounded, varicolored, arkosic, grains of white to pink feldspar; interbedded clay; yellowish to brownish-green with brick-red to purple streaks (mottled), somewhat blocky, greasy-appearing, very micaceous, sandy__ 370 4,1002

Summary:
No samples __________________________________________________ In Miocene (undifferentiated) _____________ Oligocene (undifferentiated) __ Upper Eocene (Ocala limestone) _____________ No samples ___________ ------------------------------------- _______________ In middle Eocene (Claiborne group, undifferentiated) __ Lower Eocene (Wilcox group, undifferentiated) Paleocene (Clayton formation) _______ No samples ---------------------------------------------------------------------In Upper Cretaceous (post-Eutaw, undifferentiated) __ Upper Cretaceous (Eutaw formation, restricted) __ Upper Cretaceous (Tuscaloosa formation) __

170

170

75

245

195

440

65

505

795 1,300

450 1,750

545 2,295

375 2,670

340 3,010

330 3,340

70 3,410

690 4,1002

Limestone

Potential Water-Bearing Zones:

260

505

Location: In Springfield Owner: City of Springfield Driller: Virginia Supply and Well Company Drilled: 1950
No samples
In Miocene (Undifferentiated): Clay: dark-green, sandy, phosphatic, micaceous
'Not logged below 4100.

EFFINGHAM COUNTY
Well No.: GGS 211 Elev.: 75

- Thicknes::. Depth

(feet)

(feet)

20

20

50

70

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

199

Thickness (feet)
Reddish-brown to jet-black phosphatic pebbles abundant at 20-70.

Clay: as above; limestone, white, somewhat saccharoidal,

dense, sandy

125

Depth (feet)
195

Oligocene (Undifferentiated):

Limestone: cream, nodular, fossiliferous (casts and molds

of megafossils, some bryozoan remains, and Foraminifera)_ 22

217

Rotalia mexicana var., Quinqueloculina sp. at 195-217.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, much calcitized, fossiliferous (common to

abundant bryozoan remains and Foraminifera)

183

400

Operculinoides flotidensis, Siphonina jacksonensis, Eponides cocoaensis, Eponides jacksonensis, Planulina cocoaensis, Planularia sp. at 217-240.

No samples ___ In Miocene (undifferentiated) Oligocene (undifferentiated) Upper Eocene (Ocala limestone)

Summary:

20

20

175

195

22

217

183

400

Limestone

Potential Water-Bearing Zones:

205

400

Remarks: Samples of poor quality and contaminated with sand from 195 to total depth.

EFFINGHAM COUNTY

Location: 2.5 mi. west of Springfield, on State Highway 119
Owner: No. 1 Effingham County High School Driller: Cecil Turner Drilled: 1955

Well No.: GGS 457 Elev.: 85

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, angular, arkosic; inclusions

of kaolin, light, gray, sandy, micaceous _

30

30

200

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness
(fee~)

Sand: fine-grained, arkosic, finely disseminated phosphatic

grains ________ _

25

Dept)a (feet)
55

Miocene (Undifferentiated):

Sand: fine to medium-grained, somewhat phosphatic; clay,

dark-green, somewhat granular, sandy, phosphatic, micaceous 45

100

Clay: dark-gray, sandy, micaceous, phosphatic

60

160

Reddish-brown, phosphatic fragments present at 120.

Clay: as above, but somewhat cherty, fossiliferous (macro-

shells); interbedded limestone, white, sandy __

60

220

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic; some clay, as above ___________________________ _

20

240

Clay: dark-green, blocky, phosphatic

37

277

Oligocene (Undifferentiated):

Limestone: gray to cream, nodular (much calcitized), cherty

at depth, fossiliferous (casts and molds of megafossils,

bryozoan remains, and Foraminifera) _________________________________ _ 83

360

Rotalia mexicana var., Quinqueloculina sp., Robulus cultratus, Dictyoconus1 sp. at 280. Lepidocyclina (Polylepidina) antillea} at 290. Gypsina globula1 at 320.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) ____ _ Oligocene (undifferentiated) _

55

55

222

277

83

360

Limestone

Potential Water-Bearing Zones:

83

360

'Reworked ( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

201

EFFINGHAM COUNTY

Location: 1 mi. north of Springfield, on State High- Well No.: GGS 458

way 21

Elev.: 70

Owner: Effingham County Elementary and High School

Driller: Cecil Turner

Drilled: 1955

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, angular, arkosic; clay; bluish-

gray to yellowish-green to tan to red (mottled), sandy,

finely disseminated phosphatic grains

55

55

Miocene (Undifferentiated):

Sand: fine-grained, finely disseminated phosphatic grains;

clay, dark-green, sandy, somewhat granular, micaceous

phosphatic _________ --------------------------------- _____________________

75

130

Reddish-brown to jet-black phosphatic pebbles common at 80.

Limestone: cream, saccharoidal (much calcitized), sandy,

phosphatic; clay, as above________

10

140

Sand: fine to medium-grained, angular, phosphatic

10

150

Clay: dark-green, sandy, abundantly phosphatic, somewhat

cherty __

_______________________________________________ _

80

230

Limestone: light-gray, extremely dense (highly calcitized),

saccharoidal, sandy, phosphatic, fossiliferous (macroshells

and some bryozoan remains) ____

____________________

10

240

Sand: fine to coarse-grained, phosphatic; some limestone,

as above _______

10

250

Oligocene (Undifferentiated):

Limestone: gray to cream, nodular (much calcitized), fossili-

ferous (casts and impressions of megafossils, some echi-

noid and bryozoan remains, and Foraminifera) ______________

40

290

Dictyoconus1 sp., Gypsina globulal, Rotalia mexicana var., Quinqueloculina sp. at 250.

Limestone: cream, massive (calcitized) , somewhat crystal-

- line (in texture), sparsely fossiliferous __ -----------------------------------
'Reworked ( ?) fossil of middle Eocene age.

65

355

202

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Eocene: Jackson Group: Ocala Limestone:

Thickness Depth

(feet)

(feet)

Limestone: white, much calcitized, crystalline, fossiliferous,

(abundant bryozoan and echinoid remains and Foramini-

fera) _______________ ---------------------------------------- ____________________________

5

360

Robulus alato-limbatus, Robulus arcuato-striatus var., Saracenaria sp., Eponides cocoaensis, Planularia sp., Marginulina sublituus, Textularia conica, Guttulina irregularis, Guttulina spicaeformis, Globulina gibba, Sigmomorphina semitecta var., Cancris sagra, Siphonina jacksonensis, Ala.bamina obtusa, Discorbis assulata, Cibicides lobatulus at 360.

Summary:

Pliocene to Recent (undifferentiated) Miocene (undifferentiated) _______ Oligocene (undifferentiated) ____ Upper Eocene (Ocala limestone) _____ _

55

55

195

250

105

355

5

360

Potential Water-Bearing Zones:

Sand: fine to medium-grained ______________

Sand: fine to coarse-grained

_______________ _

Limestone ____________

______________ _

10

150

10

250

110

360

Location: North of U.S. Highway 80 at Faulkville Owner: No. 1 Savannah Foundation Drilled: 1959

EFFINGHAM COUNTY
Well No.: GGS 569 Elev.: 42

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Sand: fine to coarse-grained, subrounded, arkosic; interbed-

ded clay, dark-green to red (mottled), sandy, micaceous ______ 128

128

Clay: dark-green, blocky, sandy, micaceous, phosphatic

79

207

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic

___________ _

20

227

No samples

21

248

Clay: yellowish-green, sandy, finely disseminated black phos-

phatic? grains ___

________________ _

61

309

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

203

Limestone: light-gray, dense, crystalline, sandy, phosphatic, fossiliferous (fragments, casts and molds of macroshells) ; sand, fine to coarse-grained, subrounded, phosphatic

Thickness (feet)
10

Depth (feet)
319

Oligocene (Undifferentiated):

Limestone: light-gray, nodular, somewhat crystalline and

saccharoidal, fossiliferous (echinoid and bryozoan remains

and Foraminifera) ______________

________________ _

21

340

Asterocyclina 1 sp., Pyrgo sp., Rotalia byramensis var. at 319-330.
Dictyoconus1 sp. at 330-340.
Gypsina globula\ Quinqueloculina sp. common, Pyrgo sp., Reussella oligocenica, Discorbis alabamensis, Rotalia byramensis var., Globulina sp., Baggina xenoula, Cibicides lobatulus at 340-350. Dictyoconus1 sp. common at 360-370.

Limestone: 2 cream, somewhat soft and weathered(?), fossili-

ferous (macroshells, echinoid and bryozoan remains, and

Foraminifera) __

___________________ 60

400

Miocene (undifferentiated) _ Oligocene (undifferentiated)

Summary:

319

319

81

400

Limestone

Potential Water-Bearing Zones:

81

400

Location: 0.9 miles southwest of Courthouse in Swainsboro
Owner: No. 3 City of Swainsboro Driller: Virginia Supply and Well Company Drilled: February 1949

EMANUEL COUNTY
Well No.: GGS 176 Elev. : 330

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: mottled, dark-green at depth, blocky, sandy; inter-

bedded sand, fine to coarse-grained, angular, arkosic; lime-

stone, yellow to white, massive, crystalline (in texture),

- sandy _
'Reworked ( ?) fossil of middle Eocene age. 2May be Ocala limestone of upper Eocene age.

178

178

204

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness Depth

(feet)

(feet)

Limestone: white, dense, crystalline or saccharoidal at cer-

tain levels, cherty, coarsely glauconitic at depth, fossilifer-

ous (casts and molds of megafossils, echinoid and bryo-

zoan remains, and Foraminifera); interbedded sand, fine

to coarse-grained, angular; clay, gray, sandy __ __________________ 180

358

Asterigerina subacuta, Reussella byramensis, Nonion advena, Rotalia sp., Cibicides americanus at 223-236.

In Upper Eocene: Jackson Group: Barnwell Formation:

Marl: gray, silty, sparsely glauconitic, fossiliferous (echi-

noid and bryozoan remains and Foraminifera)

132

490

Nonion inexcavatus, Nonion advena, Valvulineria jacksonensis, Discorbis assulata at 358-398.

Middle Eocene: Claiborne Group: Lisbon Formation:

Marl: light-gray to cream, somewhat sandy, limey, with in-

clusions of hard lime nodules, Ostracods and Foraminifera

at certain levels; interbedded sand, fine to coarse, sub-

angular to subrounded, molluscan shells; thin beds of lime-

stone, light-gray, dense, crystalline, sandy, phosphatic

160

650

Operculinoides sp., Lepidocyclina sp. at 490-498.

Cibicides westi at 611-616.

Glauconite prominent at 621-650.

Limestone: gray, dense, massive, sandy, phosphatic, at cer-

tain levels fragments, molds and impressions of megafos-

sils; interbedded beds of indurated sand, fine to coarse,

subangular to subrounded, phosphatic, molluscan shells

common _________________________________

100

750

Operculinoides sp. at 710-723.

Limestone: cream, much calcitized, granular, cherty, Ostra-

cods and Foraminifera at certain levels _________________________________ _ 62

812

Sand: fine to coarse-grained, subangular to subrounded,

phosphatic _________________________ --------------------------------------------------

11

823

Tallahatta Formation:

Marl: pale-green, somewhat sandy, micaceous, phosphatic,

fish teeth, molluscan shells (small Gastropods and Pelecy-

pods), Radiolaria and some Foraminifera ___________________ _

20

848

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

205

Thickness (feet)

Sand: fine to coarse-grained, subangular to subrounded, phos-

phatic __________________

__________________ _________________________ 27

Depth (feet)
870

Marl: as above

3

873

Summary:

Miocene (undifferentiated) _

178

178

Oligocene (undifferentiated) ______________________ ----------------------------------------- 180

358

In upper Eocene (Barnwell formation)

132

490

Middle Eocene (Lisbon formation) _______

333

823

Middle Eocene (Tallahatta formation)

50

873

Potential Water-Bearing Zones:
Sand: fine to coarse-grained _ Sand: fine to coarse-grained ____ Sand: fine to coarse-grained ___ Sand: fine to coarse-grained _______ Sand: fine to coarse-grained ___ _____________ _ Sand: fine to coarse-grained _______________________________________________ Sand: fine to coarse-grained _____________________________________________________

3

72

5

155

16

358

13

550

10

682

11

823

27

870

Remarks:
1. The limestones noted above are dense, crystalline in texture, hence are more or less nonporous. Such limestones, therefore, cannot be relied upon for ground-water supplies.
2. The best aquifers lie below the total depth penetrated by this well and are of Late Cretaceous age. The water-bearing sands enumerated above are thought to be satisfactory for domestic needs only.

EMANUEL COUNTY

Location: Approximately 12 mi. northeast of Swainsboro, west side of Highway 56, at school house
Owner: No. 1 Summertown Consolidated School Driller: Virginia Supply and Well Company Drilled: 1954

Well No.: GGS 372 Elev.: 255

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: bluish-gray to tan to red (mottled), blocky, very sandy____ 25

25

206

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness (feet)

Marl: light-gray to pale-green, blocky, silty, fossiliferous

(some Foraminifera) ; limestone, light-gray to white, dense,

saccharoidal, sandy, coarsely but sparsely glauconitic, fos-

siliferous (fragments, casts and molds of macroshells, echi-

noid and bryozoan remains)

15

Textularia conica, Spiroplectammina mississippiensis, Discorbis assulata, Reussella sp., Elphidium texanum, Valvulineria jacksonensis, Rotalia sp., Nonion advena, Nonion inexcavatus, Alabamina mississippiensis, Cibicides americanus var., Cibicides rnississippiensis, Cibicides cf. C. refulgens at 25-40.

Limestone: white to cream, rather dense, saccharoidal, por-

ous1, sandy, sparsely phosphatic, fossiliferous (fragments,

casts and molds of macroshells, some echinoid and bryo-

zoan remains, and Foraminifera)

185

Asterigerina subacuta, Rotalia byra1nensis var., Discorbis hernisphaerica, Reussella cf. R. oligocenica at 40-75.

Depth (feet)
40
225

Upper Eocene: Barnwell Formation:

Marl: light-gray, somewhat indurated, sparsely glauconitic,

sandier with depth, fossiliferous (Foraminifera and Ostra-

cods); interbedded limestone, as above ___

145

370

Textularia hockleyensis, Textularia dibollensis var., Nonion advena, Nonion inexcavatus, Valvulineria jacksonensis, Discorbis assulata, A ngulogerina ocalana, Cibicides arnericanus, Cibicides rnississippiensis, Cibicides cf. C. cocoaensis, Cibicides lobatulus at 225-275.
Discorbis assulata, Nonion advena, Nonion inexcavatus, Valvulineria jacksonensis prominent at 275-350.

Discorbis cocoaensis, Nonion advena, Nonion inexcavatus, Reussella eocena prominent at 350-370.

Summary:
Miocene (undifferentiated) Oligocene (undifferentiated) Upper Eocene (Barnwell formation)

25

25

200

225

145

370

Potential Water-Bearing Zones:

Limestone

185

225

]Cavities represent former macroshells that have been dissolved away by percolating ground water.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

207

EMANUEL COUNTY

Location: Approximately 8 mi. south of Swainsboro at Lexsy
Owner: No. 1 Lexsy Consolidated School Driller: Virginia Supply and Well Company Drilled: 1954

Well No.: GGS 373 Elev.: 245

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated): Clay: bluish-gray to tan to red (mottled), very sandy _

70

70

Oligocene (Undifferentiated):

Limestone: cream, saccharoidal, finely disseminated black

phosphatic grains, cherty, very sandy __

80

150

Marl: dark-green, blocky, fossiliferous (some Ostracods and

Foraminifera); limestone as above __________

15

165

Spiroplectammina mississippiensis, Quinqueloculina sp., Reussella oligocenica, Rotalia mexicana var., Asterigerina subacuta, Nonion advena, Cibicides americanus var., Cibicides lobatulus at 150-165.

Sand: fine to coarse-grained, subangular; clay, yellowish-

green, silty ______________

15

180

Limestone: white to cream, nodular, saccharoidal, very sandy,

fossiliferous (some macroshells, echinoid and bryozoan re-

mains, Ostracods, and Foraminifera)

70

250

Rotalia mexicana var. at 180-250.

Sand: medium-grained, subangular, light-brown phosphatic

pebbles; some marl, cream, silty, somewhat granular, fos-

siliferous (some macroshells, echinoid and bryozoan re-

mains, Ostracods, and Foraminifera) _____

20

270

Discorbis alveata, Discorbis assulata, Discorbis cocoaensis, Cancris sagra, Valvulineria jacksonensis, Reussella byramensis, Nonion advena, Nonionella hantkeni var., Cibicides americanus var., Cibicides lobatulus, Rotalia mexicana var. at 250-270.

Miocene (undifferentiated) Oligocene (undifferentiated)

Summary:

70

70

200

270

208

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Potential Water-Bearing Zones:

Thickness (feet)

Limestone _________ _____________

---------------------

70

Sand ----------------------------------------------------------------------------------------------------------- 15

Depth (feet)
250 265

Location: Approximately 1 mi. west of Garfield Owner: No. 1 Theodore Johnson Driller: Turner Well Drilling Company Drilled: 1959

EMANUEL COUNTY
Well No.: GGS 567 Elev.: 255

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: light-gray to purple (mottled), very sandy, micaceous__

20

20

Sand: fine to coarse-grained, subangular, arkosic

20

40

Clay: yellowish-green, sandy, micaceous, carbonaceous, kaolin

inclusions ------------------------------------------------------------------------------------------- 20

60

Clay: as above, but much sandier __

20

80

Sand: fine to coarse-grained, subangular, arkosic; some clay,

dark-green, sandy, micaceous, carbonaceous

20

100

Clay: dark-green, sandy, carbonaceous Clay: as above but much sandier and cherty __

80

180

20

200

Clay: as above; limestone, light-brown, somewhat dolomitized,

saccharoidal, sandy, phosphatic

30

230

Oligocene (Undifferentiated):

Limestone: light-brown, dense, saccharoidal, somewhat sandy,

fossiliferous (some macroshells, echinoid and bryozoan re-

mains, and Foraminifera) -------------------------------------------------------------- 50

280

Elphidium texanum, Cibicides americanus var., Cibicides pseudounge?ianus, Cibicides lobatulus at 230-250.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream to light-gray at depth, dense, granular,

sandy, somewhat fossiliferous (some macroshells, echinoid

and bryozoan remains) __________________________________________________________________ 70

350

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

209

Summary:
Miocene (undifferentiated) ____ ------------------------------------------------------Oligocene (undifferentiated) -------------------------------------------------Upper Eocene (Ocala limestone) _----------------------------------------------

Thickness Depth

(feet)

(feet)

230

230

50

280

70

350

Sandstone Limestone

Potential Water-Bearing Zones:

20

40

70

350

Location: Approximately 4 mi. west of Garfield Owner: No. 1 0. 0. Brown Driller: Turner Well Drilling Company Drilled: 1959

EMANUEL COUNTY
Well No.: GGS 568 Elev.: 335

Thicknes3 Depth

(feet)

(feet)

No samples ______________________________

200

200

In Miocene (Undifferentiated):

Sand: fine to coarse-grained, subangular, arkosic; some clay,

dark-green, sandy

20

220

Clay: dark-gray, sandy; limestone, white to cream, dense,

saccharoidal, very sandy, phosphatic, somewhat fossilifer-

ous (some macroshells, echinoid and bryozoan remains) __

15

235

Oligocene (Undifferentiated):

Marl: white to pale-yellowish-green, blocky, fossiliferous

(some macroshells, echinoid and bryozoan remains, and

Foraminifera)

___________________ ------------------------------ 10

245

Eponides byramensis, Baggina xenoula, Eponides alabamensis, Asterigerina subacuta, Discorbis assulata, Reussella oligocenica, Reussella byramensis, Discorbis hemisphaerica, Angulogerina byramensis, Cibicides americanus var., Rotalia byramensis var., Cibicides lobatulus, Cibicides hazzardi, Anomalina bilateralis at 235-245.

Clay: light-brown to yellowish-green, blocky; some marl

(cave?) , as above ______________________

_____________

20

265

210

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Limestone: white, dense, somewhat crystalline and saccha-

roidal, cherty, fossiliferous (fragments of macroshells,

echinoid and bryozoan remains) __ _

15

Limestone: white, nodular, dense, fossiliferous (macroshells) ____ 20

Limestone: as above, but considerably leached, much of it

weathered to white clay _____________________

20

Depth (feet)
280 300
320

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, granular, very sandy, coarsely glauconitic,

fossiliferous (macroshells, echinoid and bryozoan remains,

and some Foraminifera) .. --------------

________________ _

30

350

Spiroplectammina mississippiensis var., Textularia sp., Robulus alato-limbatus, Robulus limbosus var., Nodosaria latejugata var., Dentalina jacksonensis, Guttulina irregularis, Guttulina spicaeformis, Spirillina sp., Planularia sp., Gyroidina? sp., Eponides jacksonensis, Siphonina jacksonensis, Cibicides americanus var., Cibicides ouachitaensis at 320-348.

Summary:

No samples . .

------------------

In Miocene (undifferentiated)

Oligocene (undifferentiated) _____ _

_________________ _

Upper Eocene (Ocala limestone) ______________________________

200

200

35

235

85

320

30

350

Potential Water-Bearing Zones:

Limestone ---- --------------------------------- --------------------------------------- ---------------- 30

350

Location: City of Brunswick Owner: Hercules Powder Company Driller: Layne-Atlantic Company Drilled: July 1942

GLYNN COUNTY
Well No.: GGS 5 Elev.: 10

Thickne,ss Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated): Sand: fine to coarse-grained, phosphatic -----------------------------

165

165

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

211

In Miocene (Undifferentiated):

Thickness
(feet)

Depth
(feet)

Clay: dark-green, sandy, cherty, phosphatic; interbedded

sand, fine to coarse-grained, phosphatic ________

_______ _____ 125

290

Dolomitic limestone: light brown, saccharoidal, sandy, phos-

phatic ___ _ _____ _________ ______ _

15

305

Sand: fine to coarse-grained; interbedded limestone, white,

sandy, phosphatic, fossiliferous (macroshells); dolomitic

limestone and clay, as above

100

405

Limestone: white, very sandy, phosphatic, fossiliferous

(macro shells)

135

540

No samples

20

560

In Upper Eocene: Jackson Group: Ocala Limestone:
Limestone: light-gray to white, massive, dense (much calcitized), fossiliferous (macroshells, echinoid and bryozoan remains, Ostracods, and Foraminifera)
Abundant bryozoan remains, Gyroidina sp., Gypsina sp. at 560. Operculinoides sp. at 595. Aste~ocyclina nassattensis, OpMctdinoides flatidensis at 610. Amphistegina pinarensis var. at 695-1063.

1,000

Middle Eocene: Claiborne Group (Undifferentiated): Dolomitic limestone: brown, saccharoidal

60 1,060

Summary:
Pliocene to Recent (undifferentiated) In Miocene (undifferentiated) No samples _______ --------------------------------------- _ In upper Eocene (Ocala limestone) Middle Eocene (Claiborne group, undifferentiated)

165

165

375

540

20

560

440 1,000

60 1,060

Limestone

Potential Water-Bearing Zones:

285

845

212

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Naval Air Station, St. Simons Island Owner: No. 1 Naval Air Station (U.S. Govt.) Driller: Layne-Atlantic Company Drilled: September 1942

GLYNN COUNTY
Well No.: GGS 20 Elev.: 18

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, phosphatic; interbedded clay,

dark-gray, silty, micaceous ----------------------------

____________________ 155

155

In Miocene (Undifferentiated):

Clay: green, silty, finely phosphatic

90

245

No samples ---------------------------------------------- --------------------------------------------- 75

320

Sand: fine to coarse-grained, abundantly phosphatic; some

clay, as above ------------------------------------------------------------------------------------ 85

405

Dolomitic limestone ("cave"?) at 395-405.

Sand: fine to coarse-grained, abundantly phosphatic; inter-

bedded limestone, white, sandy, fossiliferous (macroshells) ____ 130

535

Oligocene (Undifferentiated):

Limestone: gray, nodular, somewhat calcitized, fossiliferous______ 15

550

Rotalia byramensis var. at 535-550.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, calcitized, fossiliferous (abundant bryo-

zoan remains and some Foraminifera)

_____________________________ 144

694

Operculinoides floridensis at 550-610.

Summary:

Pliocene to Recent (undifferentiated) _ _______ _ ________________________ 155

155

In Miocene (undifferentiated) -------------------------------------------------------------- 380

535

Oligocene (undifferentiated) __________ -------------------------------------------- 15

550

Upper Eocene (Ocala limestone) ___ _

________________________________ _____ 144

694

Potential Water-Bearing Zones:
Sand: fine to coarse-grained Limestone

50

455

159

694

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

213

Location: City of Brunswick Owner: Hercules Powder Company Driller: Layne-Atlantic Company Drilled: February 1951

GLYNN COUNTY
Well No.: GGS 197 Elev.: 15 1

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated): Sand: fine to coarse-grained, nearly gravel at depth _____

150

150

Miocene (Undifferentiated):

Clay: dark-green, silty, cherty, phosphatic; interbedded sand,

fine to coarse-grained, phosphatic ------------------------------------------------ 155

305

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic, fossiliferous (abundant oyster shells) ---------------------------- 63

368

Sand: fine to coarse-grained, abundantly phosphatic; inter-

bedded clay, dark-green, silty, phosphatic ________________

26

394

Sand: fine to coarse-grained, abundantly phosphatic; inter-

bedded limestone, white, sandy, fossiliferous (macroshells) ____ 70

464

Limestone: gray to light-brown, somewhat dolomitic, dense

(much calcitized), sandy, phosphatic, fossiliferous (frag-

ments and molds of macroshells)

------------------------------------- 60

524

Oligocene (Undifferentiated):

Limestone: light-gray, dense (much calcitized), nodular, fos-

siliferous (bryozoan remains, macroshells, and some Fora-

minifera) ______________ _______________________ ------------------------------------

31

555

Pyrgo sp., Gyroidina? sp., Asterocyclina sp. at 524-555.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, much calcitized, fossiliferous (abundant macroshells and bryozoan remains, and some Foraminifera)__ 303

Operculinoides floridensis, Pseudophragmina flintensis at 555.

Dolomitic limestone: brown, saccharoidal

157

858 1,015

'Average elevation based on Georgia State Highway Maps.

214

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Thickness (feet)

Pliocene to Recent (undifferentiated)

__ _______ ___ __ ___________ _ _ 150

Miocene (undifferentiated) __ ____ _ _ _ _ ____ __ ______ ______________ 374

Oligocene (undifferentiated) ___ _

_ _ ___ ________

31

Upper Eocene (Ocala limestone)

460

Depth (feet)
150 524 555 1,015

Limestone

Potential Water-Bearing Zones:

334

858

Samples of poor quality.

Remarks:

Location: 5 mi. southwest of Brunswick Owner: No. 1 Roy Massey Driller: E. B. LaRue Drilling Company

GLYNN COUNTY

Well No.: GGS 362

Elev.: 20

(derrick floor)

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, finely disseminated phosphatic grains;

interbedded clay, dark-gray, lignitic, micaceous, fossilifer-

ous (megafossils at certain horizons) __ __________

40

40

Limestone: gray to light-brown, dense (much calcitized), sac-

charoidal, sparsely phosphatic, fossiliferous (casts of mega-

fossils)

__ _____ _____

____ _ ________

20

60

Sand: fine to coarse-grained, rounded, phosphatic

120

180

Miocene (Undifferentiated):

Clay: dark-green, silty, phosphatic, cherty; interbedded sand,

fine to coarse-grained, phosphatic __________________________________________ 120

300

Dolomitic limestone: light-brown, sandy, phosphatic; sand,

fine to coarse-grained, phosphatic _____________ ____________________

60

360

Same lithology as above but with increasing amounts of dark-

green sandy clay__

________________________ ---- -----------

40

400

Sand: fine to coarse-grained, phosphatic; interbedded lime-

stone, white, sandy, fossiliferous (macroshells) ; some clay,

as above

______________________________ _

180

580

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

215

Oligocene (Undifferentiated):

Thickness
(feet)

Limestone: cream, somewhat granular (calcitized), fossiliferous 20

Rotalia bymmensis var. at 580-600.

Depth
(feet)
600

Upper Eocene: Jackskon Group: Ocala Limestone:

Limestone: rather dense (calritized), fossiliferous (bryozoan

remains, macroshells, and Foraminifera) ____________________

400

Operculinoides floridensis at 600-620. Gypsina globula at 660-680. Pseudophragmina flintensis at 700-720. Amphistegina pinarensis var. at 920-940.

1,000

Middle Eocene: Claiborne Group (Undifferentiated):
Limestone: white, rather calcitized; interbedded dolomitic limestone, brown, saccharoidal _____________ ___ __________ _____ _________________ 400
Lepidocyclina (Polylepidina) antillea, AstMocyclina monticellensis at 1000-1020.

1,400

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) _ Oligocene (undifferentiated) _____ Upper Eocene (Ocala limestone) Middle Eocene (Claiborne group, undifferentiated)

180

180

400

580

20

600

400 1,000

400 1,400

Potential Water-Bearing Zones:
Sand: fine to coarse-grained _ Sand: fine to coarse-grained Limestone

120

180

150

570

400 1,000

216

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 0.25 mi. north of Glynn-Camden County line, west side of Highway 17
Owner: No.1 C. E. P. Curry Driller: E. B. LaRue Drilling Company Drilled: 1955

GLYNN COUNTY
Well No.: GGS 376 Elev.: 20 (derrick floor)

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, phosphatic, finely disseminated phos-

phatic grains; interbedded with thin stringers of clay, dark-

brown, fissile, silty, lignitic, micaceous, fossiliferous ___

20

20

Indurated sand: fine to medium-grained, fossiliferous

15

35

Limestone: light-gray, dense (much calcitized), sandy, sparse-

ly phosphatic, fossiliferous (casts and impressions of mega-

fossils) ___ _ _____ ___

___________ _

65

100

Clay: dark-gray, silty

10

110

Sand: very coarse-grained, rounded, phosphatic

40

150

Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic, cherty (at certain hori-

zons); interbedded with sand, fine to coarse-grained, phos-

phatic _____ _ ________

____ ________

190

340

Dolomitic limestone: light-brown, saccharoidal, sandy, coarsely

phosphatic; some clay as above________ ___________________ __________________ 60

400

Clay: dark-green, silty; with sand, fine to coarse-grained,

phosphatic________________________

_____ ______ __ _ _____ 40

440

Sand: fine to coarse-grained, phosphatic; interbedded lime-

stone, dense (calcitized), sandy, phosphatic, fossiliferous

(molds, impressions, and fragments of megafossils) _____

140

580

Oligocene (Undifferentiated):

Lithology as in interval 440-580; fragments of limestone,

light-gray, dense (calcitized), nodular, fossiliferous (Fora-

minifera scarce) _______________ ____ _______________

____________ _ 20

600

Rotalia byramensis var. at 580-600.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: dense (calcitized), fossiliferous, dolomitized at

depth _____________________ _________________

__________________

310

910

Bryozoan remains and macroshells at 600-620. Operculinoides sp., Gypsina globula at 620-640. Pseudophragmina flintensis at 640-660.

Dolomitic limestone: brown, saccharoidaL

70

980

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

217

Middle Eocene: Claiborne Group (Undifferentiated):

Thickness (feet)

Dolomitic limestone: brown, saccharoidal; interbedded lime-

stone, white, fossiliferous__

__ __ ___ _____

370

Depth (feet)
1,350

Summary:

Pliocene to Recent (undifferentiated)

Miocene (undifferentiated) ___________________

Oligocene (undifferentiated) _

___________________

Upper Eocene (Ocala limestone)______________________

________________

Middle Eocene (Claiborne group, undifferentiated) _______________

150

150

430

580

20

600

380

980

370 1,350

Potential Water-Bearing Zones:

Sand: fine to coarse-grained _

Sand: fine to coarse-grained _

Limestone

________________________ ---------------------

40

150

60

600

300

900

Location: Jekyll Island Owner: No.1 Jekyll Island (State of Georgia) Driller: M. M. Gray Drilled: 1955

GLYNN COUNTY
Well No.: GGS 431 Elev.: 121

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, phosphatic (finely disseminated) _

25

25

Clay: dark-gray, silty, sparsely phosphatic, micaceous, fossil-

iferous; sand, as above

______ ______ ____ _________________ _________ __ ____ 80

105

Miocene (Undifferentiated):

Sand: fine to medium-grained, phosphatic___ ___ _____ ______ ______________ _ 20

125

Clay: dark-green, sandy, phosphatic, cherty; interbedded with

sand, fine to coarse-grained, phosphatic_______________________ _

160

285

Sand: fine to coarse-grained, abundantly phosphatic; inter-

bedded limestone, white, sandy, phosphatic, fossiliferous;

dolomitic limestone, light-brown, saccharoidal, sandy, phos-

phatic; and clay, as above _______ ______________

______________ _ 280

565

Dolomitic limestone prominent at 285-295.

Macroshells common at 435-475.
-'Average elevation based on Georgia State Highway Maps.

218

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: cream, nodular, much calcitized, fossiliferous (macroshells, bryozoan remains, and some Foraminifera) _______ 10

Rotalia mexicana var., Argyrotheca sp., Operculinoides2 sp., and macroshells common at 575-585.

Depth (feet)
575

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, rather dense (calcitized), fossiliferous

(macroshells, echinoid and bryozoan remains, and Fora-

minifera) ____

_____________

_ __________ 131

706

Operculinoides sp. at 575-585. Gypsina globula at 635-645.

Summary:
Pliocene to Recent (undifferentiated) __ Miocene (undifferentiated) __________ Oligocene (undifferentiated) ___________ Upper Eocene (Ocala limestone) __________

105

105

460

565

10

575

131

706

Potential Water-Bearing Zones:

Sand: fine to coarse-grained __

Sand: fine to coarse-grained_________ _

Limestone ___

_____________ _

20

175

50

495

131

706

Location: Jekyll Island Owner: No.2 Jekyll Island (State of Georgia) Driller: M. M. Gray Drilled: 1955

GLYNN COUNTY
Well No.: GGS 452 Elev.: 121

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, finely disseminated phosphatic grains; in-

terbedded clay, dark-gray, silty, lignitic, micaceous, fossil-

iferous

50

50

Sand: fine to coarse-grained, rounded, phosphatic; limestone,

dark-gray, dense (much calcitized), sandy, sparsely phos-

phatic _______________________________ ----------------------------------

------------------ 10

60

Clay: yellowish-green to cream, very sandy________________ _

45

105

1Average elevation based on Georgia State Highway Maps. 2Reworked ( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

219

Miocene (Undifferentiated):

Thickness (feet)

Clay: dark-green, sandy, blocky, phosphatic, cherty at certain levels; interbedded sand, fine to coarse-grained, phosphatic 145

Sand: fine to coarse-grained, phosphatic; interbedded lime-

stone, white, sandy, phosphatic, fossiliferous; dolomitic

limestone, light-brown, saccharoidal, sandy, phosphatic;

clay, dark-green, silty__

______________ _

300

Dolomitic limestone common at 250-260.

Depth (feet)
250
550

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, dense (calcitized), fossiliferous (mac-

roshells, bryozoan remains, and Foraminifera)

150

700

Operculinoides floridensis at 550-560.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) Upper Eocene (Ocala limestone)

105

105

445

550

150

700

Potential Water-Bearing Zones:
Sand: fine to coarse-grained_ Sand: fine to coarse-grained .. Limestone __

10

60

50

400

150

700

Location: Brunswick Owner: Allied Chemical Company, Solvay Process Division Driller: Layne-Atlantic Company Drilled: 1955

GLYNN COUNTY
Well No.: GGS 530 Elev.: 15 1

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, finely disseminated phosphatic grains;

interbedded clay, dark-gray, fissile, lignitic, micaceous, fos-

siliferous at certain levels___

_____________ _

65

65

Limestone: dark-gray, dense (much calcitized), sandy, phos-

phatic, fossiliferous

15

80

Clay: gray, somewhat indurated, sandy, containing coarse

grains of quartz _

15

95

Sand: medium to very coarse-grained, rounded, phosphatic __

55

150

'Average elevation based on Georgia State Highway Maps.

220

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Miocene (Undifferentiated):

Thickness
(feet)

Clay: dark-green, sandy, phosphatic, cherty; interbedded lime-

stone, gray, dense (much calcitized), sandy, fossiliferous;

sand, fine to coarse-grained, phosphatic_

115

Dolomitic limestone: light-brown, fine-grained, saccharoidal; clay, pale-green, sandy; limestone, white, dense (calcitized), very sandy, coarsely phosphatic, fossiliferous______________________________ 235

Depth (feet)
265 500

Limestone, white, sandy, fossiliferous (a coquina) at 265280.
Indurated sand (or dolomitic limestone), light-brown, finegrained, saccharoidal, phosphatic, at 280-310.
Clay, pale-green, sandy, with interbedded dolomitic limestone at 310-370.
Limestone, white, dense (much calcitized), very sandy, coarsely phosphatic, fossiliferous at 390-500.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, massive, much calcitized, fossiliferous

(macroshells, bryozoan remains, and Foraminifera) __

300

800

Operculinoides sp. at 500-510. Asterocyclina sp. at 520-530. Asterocyclina nassauensis, Gypsina globula at 530-540. Pseudophragmina flintensis at 590-600. Operculina mariannensis at 610-620.

Summary:

Pliocene to Recent (undifferentiated)_________________ --------------------------------- 150

150

Miocene (undifferentiated) ----------------------------------- -------------------------------- 350

500

Upper Eocene (Ocala limestone)---------------------------------------------------- _______ 300

800

Potential Water-Bearing Zones:
Sand: coarse-grained ___ --------------------------------Limestone ______________________ -----------------------------

55

150

300

800

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

221

Location: Northern part of town, 2 blocks west of Broad Street (Highway 84) in Cairo
owner: No.1 ("North Well") City of Cairo Driller: Layne-Atlantic Company Drilled: 1946

GRADY COUNTY
Well No.: GGS 140 Elev.: 265

Thickness Depth

(feet)

(J eet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, micaceous, phosphatic (finely dissemi-

nated) ---------------------- _________________ 51

51

Miocene (Undifferentiated):

Clay: pale-green, sandy; sand, medium-grained, angular________

106

157

Clay: yellowish-green, sandy, somewhat indurated and tough

at depth; interbedded limestone, light-gray to cream, sandy____ 128

285

Limestone: cream, much calcitized, somewhat saccharoidal,

sandy, fossiliferous (casts and molds of megafossils, rare

Ostracods and Foraminifera)_____

______________________

83

368

Archaias sp. at 362-368.

In Oligocene(?) (Undifferentiated):

Limestone: cream, nodular, somewhat sandy, fossiliferous

(megafossils and Foraminifera 1 ) _______________________________________________ _

71

439

Upper Eocene(?): Jackson Group: Ocala Limestone: Dolomitic limestone: gray to brown at depth, saccharoidal

56

495

Summary:

Pliocene to Recent (undifferentiated)...

_____________ _

51

51

Miocene (undifferentiated) __________________ ---------- ------- 317

368

In Oligocene (?) (undifferentiated). ------------------------------------- 71

439

Upper Eocene(?) Ocala limestone _______ _

56

495

Potential Water-Bearing Zones:

Limestone ...... ------ --------------- 139

439

'So poorly preserved as to be unidentifiable.

222

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

GRADY COUNTY

Location: Southern part of town, west side of Broad Well No.: GGS 141

Street, in Cairo

Elev.: 234

Owner: No.2 ("South Well") City of Cairo

Driller: Layne-Atlantic Company

Drilled: 1946

Thickness Depth

(feet)

lfeet)

-~------ --~--

Pliocene to Recent (Undifferentiated):

Clay: bluish-gray to pink (mottled), sandy, limonitic

4

9

Clay: tan to bluish-gray (mottled), sandy, limonitic .

6

15

Sand: fine-grained, micaceous, phosphatic (finely disseminated) 18

33

Lignite: black; and clay, gray, blocky, sandy

16

49

Miocene and Oligocene (Undifferentiated):

Sand: medium-grained, angular, arkosic; and clay, as above

14

63

No samples_

21

84

Clay: yellowish-green to red (mottled), sandy; interbedded

limestone, cream to gray to light-brown, somewhat dolomi-

tized and saccharoidal at certain levels, sandy, fossiliferous

at depth (casts and molds of megafossils) _

318

402

Limestone with casts and molds of megafossils prominent at 323-370.

Upper Eocene(?): Jackson Group: Ocala Limestone: Dolomitic limestone: brown, saccharoidal

32

434

Summary:
Pliocene to Recent (undifferentiated) ________ Miocene and Oligocene (undifferentiated) Upper Eocene (?) (Ocala limestone)__ _ ___________ _

49

49

353

402

32

434

Limestone Limestone

Potential Water-Bearing Zones:

47

370

32

434

Remarks: Samples appear to be of poor quality.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

223

Location: Center of town, south side of Atlantic Coast Line R.R., west side of City Water Works in Cairo
Owner: City of Cairo Driller: Layne-Atlantic Company Drilled: May 1950

GRADY COUNTY
Well No.: GGS 205 Elev.: 240

Thickness Depth

(feet)

(feel)

Pliocene to Recent (Undifferentiated):

Clay: bluish-gray to tan to red (mottled), very sandy, limonitic_ 15

15

Sand: fine-grained, somewhat argillaceous, finely dissemi-

nated phosphate grains__

15

30

Miocene (Undifferentiated):

Clay: white to pale-green, blocky, tough, sandy, cherty at

depth; interbedded sand, fine to coarse-grained, angular,

phosphatic at depth ______________

82

112

Chert prominent at 81-96.

Brown phosphatic pebbles common at 96-112.

Limestone: white, sandy, somewhat dolomitized at certain

levels; interbedded clay, as above______________________

182

294

Limestone: gray, nodular, rather massive, fossiliferous (casts

and molds of megafossils and rare Foraminifera) __ _

61

355

Archaias sp. at 309-325.

Oligocene (Undifferentiated):

Limestone: cream, sandy, somewhat dolomitized at depth,

fossiliferous (casts and molds of megafossils); beds of

clay, dark-green, somewhat indurated, tough__

122

477

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-brown, dense, nodular, somewhat dolomi-

tized, fossiliferous (echinoid and bryozoan remains and

Foraminifera) ___

47

524

Robulus sp., Quinqueloculina sp., Gypsina globula at 494-509.

Dolomitic limestone: brown, saccharoidaL

63

587

Summary:
Pliocene to Recent (undifferentiated) ____ _ Miocene (undifferentiated) ___________ Oligocene (undifferentiated) ___________ _ In upper Eocene (Ocala limestone) ___________________

--------------- 30

30

325

355

122

477

110

587

224

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Potential Water-Bearing Zones: Limestone __________________

Thickness Deptl

(feet)

(feet)

130

500

Remarks: Water below depth of 500 not suitable because of excessive mineralization.

GRADY COUNTY

Location: 7 mi. north of Cairo

Well No.: GGS 493

Owner: No. 1 Shiver Elementary School

Drilled: 1956

Thickness Depth

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-



(f

eet) --

-

-

(feet) ---

Miocene (Undifferentiated):

Clay: brick-red, mottled at depth, sandy, micaceous, limonitic

90

90

Clay: yellowish-green, sandy____

40

130

Sand: fine-grained, angular__

20

150

Limestone: white to brown, dolomitized at certain levels, sandy__ 120

270

Clay: dark-green, sandy

40

310

Limestone: as above._

10

320

No samples_

20

340

In Oligocene and Upper Eocene (Undifferentiated):

Limestone: cream, somewhat crystalline and calcitized, nodu-

lar, fossiliferous (echinoid and bryozoan remains and Fora-

minifera) ____________________ ----------------------------------------------------------------------- 40

380

Rotalia mexicana var. at 340.

No samples ___

20

400

Dolomitic limestone: brown, saccharoidaL___________________________________

400

No samples ___________

20

420

Limestone: brown to cream, nodular, fossiliferous (Foramini-

fera) ; dolomitic limestone, as above ____________ __________ _______________________ 120

540

Asterigerina subacuta at 420. Operculinoides sp., Lepidocyclina sp. at 460. Operculinoides sp., Lepidocyclina sp. at 540.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

225

No samples _ Dolomitic limestone: as above .. - --------------------------------

Thickness (feet)
10
?

Depth (feet)
550
550

Summary:
Miocene (undifferentiated) _.. ___ _____________ _ No samples __________ ---------------------------------- ---------------------In Oligocene and upper Eocene (undifferentiated)

320

320

20

340

210

550

Limestone

Potential Water-Bearing Zones:

40

380

Remarks:
Samples of poor quality-too poor to permit selection of top of upper Eocene (Ocala) limestone.

GRADY COUNTY

Location: 14 mi. south of Cairo

Well No.: GGS 494

Owner: No. 1 Beckbranch School

Drilled: 1956

Thickness Depth
------------------------------------------------(-fe-e-t) (feet)

Pliocene to Recent (Undifferentiated): Clay: yellow (or ochre), sandy, limonitic___ No samples ------- -------------------- ------------------

60

60

20

80

In Miocene (Undifferentiated): Clay: pale-green, somewhat fossiliferous_ .

?

80

No samples ____ _

20

100

Limestone: cream, sandy_ ..__

?

100

No samples __

20

120

Clay: light to dark-green, phosphatic; interbedded with lime-

stone, cream to light-gray to light-brown, somewhat dolomi-

tized and saccharoidal at certain levels, sandy____________________________ 160

280

No samples _____ _

20

300

Clay: light-gray, blocky; interbedded with limestone, as above___ 80

380

226

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Thickness (feet)

Pliocene to Recent (undifferentiated)__ ____________

60

No samples -------------------------------------------------------------------------------------------------- 20

In Miocene (undifferentiated)______________________________

300

Depth (feet)
60 80 380

Potential Water-Bearing Zones: None observed to total depth of well.

Location: Approximately 75ft. east of Big Indian Creek, at City Water Works, Perry
Owner: City of Perry Driller: Layne-Atlantic Company Drilled: 1939

HOUSTON COUNTY
Well No.: GGS 53 Elev.: 295

Thickness Depth

(feet)

(feet)

Middle and Lower Eocene and Paleocene (Undifferentiated):

Sand: fine to medium-grained, limonitic; and clay, gray, sandy 78

78

Upper Cretaceous: Providence Sand:

Kaolin: gray to red (mottled), sandy, micaceous; interbedded

sand, fine to coarse-grained, arkosic, limonitic_

122

200

Ripley, Cusseta and Blufftown (Undifferentiated):

Clay: dark-gray, silty, micaceous, pyritiferous__

75

275

Sand: fine to coarse-grained, arkosic; interbedded clay (or

kaolin), gray to red (mottled), micaceous, sandy

480

755

No samples __

165

920

In Tuscaloosa Formation:

Clay: gray to purple (mottled), micaceous, sandy; numerous

beds of sand, fine to coarse-grained, angular, arkosic, limon-

itic ____ ______________ ____________________________________________________________ _

340

Summary:

Middle and lower Eocene and Paleocene (undifferentiated)_

78

Upper Cretaceous (Providence sand) __________ ----------------------------------------- 122

Upper Cretaceous (Ripley, Cusseta and Blufftown, undiffer-

entiated) ------------------------------------------------------------------------------------------------- 555

No samples ------------------------c----------------------------------------------------------------------- 165 In Upper Cretaceous (Tuscaloosa formation) ____________________________________ 340

1,260
78 200
755 920 1,260

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

227

Potential Water-Bearing Zones:
Sand: coarse-grained Sand: coarse-grained Sand: coarse-grained ___ Sand: coarse-grained __ Sand: coarse-grained --------------------------------- ______________ Sand: coarse-grained ______________________ Sand: coarse-grained _______ Sand: coarse-grained _

Thickness Depth

(feet)

(feet)

6

92

15

200

19

319

4

371

20

676

11

715

5

975

20 1,220

Location: Southeast corner of Land Lot 266, 14th Land District
Owner: No.1 H. B. Gilbert Driller: Tricon Minerals, Inc. Drilled: September 1949

HOUSTON COUNTY
Well No.: GGS 194 Elev.: 364

Thickness Depth

(feet)

(feet)

Oligocene and Eocene (Undifferentiated):

Clay: yellowish-green to red (mottled), blocky, carbonaceous,

somewhat sandy; and limestone, cream colored, cherty, fos-

siliferous (bryozoan remains) _ ______________________________________

30

30

Limestone: as above__

38

68

Sand: fine to medium-grained, angular_

21

89

Clay: dark-green to tan to red (mottled), sandy; limestone,

as above; and sand, fine to medium grained __________________

30

119

Sand: fine to medium-grained

31

150

No samples __

40

190

In Paleocene: Midway Group: Clayton Formation:

Clay: dark-brown, blocky, lignitic; and sand, fine to coarse-

grained, pyritiferous

______________ 15

205

Upper Cretaceous: Providence Sand:

Sand: fine to coarse, angular, arkosic, pyritiferous; and thin

beds of clay (or kaolin), mottled, sandy, micaceous____________________ 180

385

Ripley and Cusseta (Undifferentiated):

Clay: bluish-gray to black, carbonaceous, micaceous, sideritic,

pyritiferous; some sand, fine to coarse-grained, arkosic,

pyritiferous

_ ------------------------------------------------------------- 95

480

228

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Sand: fine to coarse-grained, arkosic, pyritiferous; and thin beds of clay (or kaolin), gray to red (mottled), micaceous, sandy _ _ _____ _____________ _ ________ ___ ___ ______ _____ ___ -------- ___ _ _---------- 340

Depth (feet)
820

Blufftown and Eutaw (Undifferentiated):

Sand: fine to coarse-grained, arkosic; and thin beds of clay,

dark-brown, fissile, lignitic, micaceous, somewhat sandy

90

910.

Tuscaloosa Formation:

Sand: fine to coarse-grained, massive, arkosic, pyritiferous;

interbedded clay (or kaolin), white to gray (mottled), mi-

caceous, sandy ___

285

Sand: as above; interbedded clay, green to red (somewhat

mottled), iron-stained, somewhat fissile, micaceous, sandy

265

Sand: coarse-grained, arkosic, massive

95

1,195
1,460 1,555

Lower Cretaceous(?) (Undifferentiated): Clay: brick-red, sandy, highly micaceous

130 1,685

Basement Complex (Undifferentiated): Crystalline rock __ _ _____________

13 1,698

Summary:

Oligocene and Eocene (undifferentiated) _______ _

150

No samples ________

_________________ _

40

In Paleocene (Clayton formation) _______

15

Upper Cretaceous (Providence sand)_

_______________________ 180

Upper Cretaceous (Ripley and Cusseta, undifferentiated) ______ _ 435

Upper Cretaceous (Blufftown and Eutaw, undifferentiated) _____ _ 90

Upper Cretaceous (Tuscaloosa formation) _______

645

Lower Cretaceous (?) (undifferentiated) _____________ ______________________

130

Basement complex (undifferentiated) __ _

13

150 190 205 385 820 910 1,555 1,685 1,698

Potential Water-Bearing Zones:

Sand: fine to coarse-grained__ _________________

21

Sand: fine to coarse-grained______________________

31

Sand: fine to ocarse-grained _______________ _

30

Sand: fine to coarse-grained

------------------------ -------------------------

60

Sand: fine to coarse-grained ________________________

125

Sand: fine to coarse-grained _________________________

125

Sand: fine to coarse-grained _______________________________________________________ 205

Sand: fine to coarse-grained ____________________________

95

89 150 270 385 675 960 1,195 1,555

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

229

HOUSTON COUNTY

Location: Approximately 2 blocks west of New Perry Hotel, lh block east of City Water Works, opposite cemetery in Perry
Owner: City of Perry Driller: Layne-Atlantic Company Drilled: September 1952

Well No.: GGS 318 Elev.: 318

Thickness Depth

(feet)

(feet)

Middle and Lower Eocene (Undifferentiated):

Sand: fine to coarse-grained, limonitic; interbedded clay,

gray, lignitic, micaceous~

90

90

Paleocene: Midway Group: Clayton Formation: Clay; dark-gray, hackly, lignitic ~~~

6

96

Upper Cretaceous: Providence Sand:

Clay (or kaolin) : white to pink (mottled), micaceous, some-

what sandy; interbedded sand, fine to coarse-grained, ar-

kosic, pyritiferous, sideritic_

. ______ __ _

____________ __ 47

143

Sand: fine to coarse-grained, arkosic, pyritiferous, sideritic;

interbedded clay (or kaolin), gray to red (mottled), sandy,

micaceous -------~

73

216

Ripley and Cusseta (Undifferentiated):

Marl: bluish-gray, lignitic, micaceous, sandy, sideritic, pyriti-

ferous ___ _

29

245

Sand: fine to coarse-grained, rather massive, angular, arko-

sic; interbedded clay (or kaolin), gray, micaceous, sandy__

245

490

Blufftown Formation:

Clay: dark-brown, fissile, lignitic, micaceous, sandy _______________ 14

504

Sand: fine to coarse-grained, massive, angular, arkosic, mi-

caceous, pyritiferous; interbedded clay, dark-brown, fissile,

lignitic, micaceous, sandy_____ __ ____ ~-- -~

___ ____________ ___ 120

62-4

Summary:

Middle and lower Eocene (undifferentiated) __

90

90

Paleocene (Clayton formation) __

____ _________________

6

96

Upper Cretaceous (Providence sand) ---------~----~~---------------------

120

216

Upper Cretaceous (Ripley and Cusseta, undifferentiated)-~-------------- 274

490

Upper Cretaceous (Blufftown formation)__

134

624

230

GEORGIA GEOLOGICAl, SURVEY BULLETIN 70

Potential Water-Bearing Zones:
Sand: fine to coarse-grained__ _______________ ______ _ ____ Sand: fine to coarse-grained___________________________________________ _ Sand: fine to coarse-grained___________________________________ Sand: fine to coarse-grained _______________________________ _ Sand: fine to coarse-grained_ ______________ Sand: fine to coarse-grained_______________________________ Sand: fine to coarse-grained______________

Thickness Depth

(feet)

(feet)

10

153

35

215

52

329

24

385

64

471

15

586

25

624

Location: Southwest part of City of Warner Robins Owner: No. 1 City of Warner Robins
Driller: Layne-Atlantic Company Drilled: January 1954

HOUSTON COUNTY
Well No.: GGS 370 Elev.: 239

Thickness Depth

(feet)

(feet)

Tertiary (Undifferentiated): Clay: brick-red, very sandy, limonitic_

20

20

Upper Cretaceous: Providence Sand:

Kaolin: gray to pink (mottled), micaceous, sandy; sand, fine

to coarse-grained __

_____________

34

54

Sand: fine to coarse-grained, massive, angular, arkosic

56

110

Ripley, Cusseta, Blufftown and Eutaw (Undifferentiated):

Clay: gray to pink, sandy, micaceous _

32

142

Sand: fine to coarse-grained, angular, arkosic; interbedded

clay, as above

___________________

_ ___________ _

68

210

Tuscaloosa Formation: Clay: gray, micaceous, sandy__

8

218

Sand: fine to coarse-grained, massive, angular, arkosic, li-

monitic

90

308

Sand: as above, but much coarser-grained; interbedded clay,

gray to red (mottled), micaceous, sandy______________________

92

400

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

231

Summary:

Thickness (feet)

Tertiary (undifferentiated) ___________________________________ ---------------------------- 20

Upper Cretaceous (Providence sand)---------------------------------------------------- 90

Upper Cretaceous (Ripley, Cusseta, Blufftown and Eutaw, un-

differentiated) ___

___ _____ _________________________ ____________________

100

Upper Cretaceous (Tuscaloosa formation)-------------------------------------------- 190

Depth (feet)
20 110
210 400

Potential Water-Bearing Zones:

Sand: fine to coarse-grained___

__________________ _

10

110

Sand: fine to coarse-grained____________________________________________________________________ 34

176

Sand: fine to coarse-grained____

14

206

Sand: fine to coarse-grained____

18

240

Sand: fine to coarse-grained_____________

33

281

Sand: fine to coarse-grained____

14

302

Sand: fine to coarse-grained__________________

40

380

Location: Southwest part of City of Warner Robins Owner: No.2 City of Warner Robins Driller: Layne-Atlantic Company Drilled: February 1954

HOUSTON COUNTY
Well No.: GGS 374 Elev.: 239

Thickness Depth

(feet)

(feet)

Summary:

Tertiary (undifferentiated) _______________ __ ____ --------------------------- 36

36

Upper Cretaceous (Providence sand)_______________________________________________

69

105

Upper Cretaceous (Ripley, Cusseta, Blufftown and Eutaw, un-

differentiated) ____________ -----------------------------------

______________________ __ 105

210

Upper Cretaceous (Tuscaloosa formation) _______________ ________________

223

433

Potential Water-Bearing Zones:

Sand: fine to coarse-grained ___ ----------------------------------

Sand: fine to coarse-grained_

_________________

_____________

4

112

6

130

Sand: fine to coarse-grained

--------------------------------------------------------- 6

146

Sand: fine to coarse-grained____

-------------------------------------

16

172

Sand: fine to coarse-grained

_______________ ------------------------

10

194

Sand: fine to coarse-grained________________ -------------------------------------------------- 58

290

Sand: fine to coarse-grained__

------------------------------------------------ 82

382

Sand: fine to coarse-grained

___ ________________ ________ ___ ________

39

433

Remarks:
Samples of poor quality, hence formational tops estimated from electric log of the above well.

232

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: At City Water Works, Perry Owner: No. 5 City of Perry Driller: Layne-Atlantic Company Drilled: March 1955

HOUSTON COUNTY
Well No.: GGS 414 Elev.: 295

Thickness Depth

(feet)

(feet)

Middle and Lower Eocene (Undifferentiated):

Sand: fine to medium-grained; and clay, gray_

7

7

Sand and clay: as above; with considerable amount of clay,

dark-gray, micaceous, lignitic____ _

_________________________________ 13

20

Clay (or kaolin) : light-gray to white, sandy__

22

42

Paleocene: Midway Group: Clayton Formation: Clay: dark-gray to black, lignitic, pyritiferous .

8

50

Upper Cretaceous: Providence Sand:

Clay (or kaolin): white to red (mottled), sandy, micaceous;

interbedded sand, fine to coarse-grained, angular, arkosic,

limonitic ___ ________________

__ _____________________________ 100

150

Sand: fine to coarse-grained, angular, arkosic, limonitic _

40

190

Ripley and Cusseta (Undifferentiated):

Clay: gray, sandy, micaceous, somewhat lignitic, pyritifer-

ous; interbedded sand, fine to coarse-grained, angular, ar-

kosic ---------------------------------------------------------------- ------------------------------------- 70

260

Sand: fine to coarse-grained, rather massive (at certain hori-

zons), arkosic; interbedded clay (or kaolin), white to gray

to red (mottled), micaceous, sandy__

228

488

Summary:

Middle and lower Eocene (undifferentiated) __ .

42

42

Paleocene (Clayton formation)_________________ ___

_________________ _

8

50

Upper Cretaceous (Providence sand) ______________________________

140

190

Upper Cretaceous (Ripley and Cusseta, undifferentiated) ___

298

488

Potential Water-Bearing Zones:

Sand: fine to coarse-grained__ ----------------------------------- ___________________

26

180

Sand: fine to coarse-grained_ ------------------------------------ ________________

192

464

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

233

Location: At City Water Works, in Ocilla owner: No. 3 City of Ocilla Driller: Stevens Southern Drilling Company Drilled: March 1952

IRWIN COUNTY
Well No.: GGS 274 Elev.: 330

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: mottled, sandy, limonitic _____

30

30

Clay: yellowish-green, sandy___________ -------------------------------------------

40

70

Sand: fine to coarse-grained, angular, arkosic__________________

20

90

Clay: yellowish-green, sandy; interbedded sand, as above;

limestone, white, sandy__________

_____________ _

80

170

Sand: fine to coarse-grained, angular

60

230

Oligocene (Undifferentiated):

Limestone: white to light-gray, very dense, highly calcitized,

crystalline, cherty, sandy, fossiliferous (bryozoan remains,

and Foraminifera) _________________

_____ ----------------------------------------- 70

300

Rotalia mexicana var. at 230-240.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, much calcitized (more so at depth), crystal-

line, fossiliferous (bryozoan remains and Foraminifera at

certain levels) ___________ __ ___________________ ___________ ------------------------------- ___ 200

500

Operculinoides floridensis at 300-310.

Limestone: as above; interbedded dolomitic limestone, brown,

saccharoidal, rather massive ---------------------------------------------------------- 130

630

Summary:

Miocene (undifferentiated) -------------------------------------------------------------------- 230

230

Oligocene (undifferentiated) ------------------------------------------------------------------ 70

300

Upper Eocene (Ocala limestone)------------------------------------------------------------ 330

630

Potential Water-Bearing Zones:

Limestone ---------------------- ----------------------------------------------------------------------------- 240

470

234

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Hazelhurst, 0.1 mi. north of U.S. Highway 341, few hundred yd. east of Georgia-Florida R.R., at City Water Works
Owner: No. 3 City of Hazelhurst Driller: Layne-Atlantic Company Drilled: June 1948

JEFF DAVIS COUNTY
Well No.: GGS 157 Elev.: 259

Thickness Deptb

(feet)

(feet)

Miocene (Undifferentiated):

Clay: mottled, sandy, limonitic______ ----------------------------------------------------- 20

20

Sand: medium-grained, angular, arkosic; and clay, as above__

35

55

Clay: yellowish-green, sandy, cherty at certain levels; inter-

bedded sand, fine to medium-grained, angular, arkosic, phos-

phatic (at depth) _______ ------------------------------ _____________________________ _ 305

360

Gray phosphate pebbles at 200-260.

Clay: light-gray, sandy, phosphatic; interbedded limestone,

white, dense, sandy____________________________________________________________________________ 80

440

Limestone: light-gray to white to light-brown, dolomitized at

depth, dense, sandy, fossiliferous at certain levels

117

557

Oligocene (Undifferentiated):

Limestone: light-gray, nodular, dense, crystalline, sandy,

somewhat fossiliferous (echinoid and bryozoan remains,

Ostracods, and Foraminifera)___________ ___________________

10

567

Elphidium sp., Rotalia mexicana var., Asterigerina subacuta, Quinqueloculina sp. at 557-567.

Limestone: brown, nodular, rather dense, much calcitized fos-

siliferous (as above) ________________

103

670

Coskinolina?l sp. at 567-587.

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, rather soft, granular (in texture), fossil-

iferous (echinoid and bryozoan remains and "larger Fora-

minifera" at certain levels)____

_____________ _

170

840

Lepidocyclina sp. at 760-810.

Summary: Miocene (undifferentiated) ____ _ Oligocene (undifferentiated) __ In upper Eocene (Ocala limestone) __
'Reworked ( ? ) fossil of middle Eocene age.

557

557

113

670

170

840

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

235

Limestone

Potential Water-Bearing Zones:

Thickness Depth

(feet)

(feet)

273

840

Remarks:
Sample intervals too great to permit accurate determination of formational top of upper Eocene (Ocala limestone).

JEFFERSON COUNTY

Location: Few hundred yards west of U.S. Highway Well No.: GGS 133

1, south side of Quake! Street, in Wrens

Elev.: 445

Owner: No.2 U.S. Geological Survey test hole

Driller: J. K. Scott Drilling Company

Drilled: July 1946

Thickness Depth

(feet)

(feet)

--------------------------------------------------~

Miocene (Undifferentiated):

Clay: light-gray to red to purple (mottled), sandy, limonitic

20

20

Clay: yellowish-green to red (somewhat mottled), blocky,

sandy, limonitic __________________________________________

10

30

Sand: fine to coarse-grained, subangular, arkosic

20

50

Upper Eocene: Jackson Group: Barnwell Formation:

Clay: white to light-gray, somewhat indurated, very sandy

20

70

Sand: fine to coarse-grained, angular; clay, light-gray__ ___________ _ 10

80

Clay: yellowish-green to tan (mottled), somewhat indurated,

blocky, sandy ____ ______ ___ _____

30

llO

Sand: fine to coarse-grained, angular, arkosic__

30

140

Clay: dark-green, sandy, carbonaceous, fossiliferous (Fora-

minifera)

10

150

Valvulineria jacksonensis abundant, Nonion advena at 140150.

Middle Eocene: Claiborne Group (Undifferentiated) :

Clay: light-gray to chocolate-brown, carbonaceous, micaceous,

sandy _____

________________ 10

160

Clay: as above; and indurated clay, dark-green, carbonaceous,

micaceous (finely disseminated)_

______ ______________ _______________ 25

185

236

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Cretaceous: Tuscaloosa Formation:

Kaolin: light-gray to pink (mottled), sandy, micaceous ___

65

250

Sand: fine to medium-grained, angular; kaolin, mottled,

sandy, micaceous _

20

270

Sand: fine to coarse-grained, arkosic

20

290

Sand: fine to coarse-grained; clay, gray to yellowish-green,

sandy, micaceous _________ -------------------------

50

340

Clay or kaolin: light-gray, micaceous (sericitic) __

10

350

Sand: fine to coarse-grained; clay, gray, sandy, micaceous_

130

480

Clay; pale-green to white, micaceous ______________

20

500

Sand: fine to coarse-grained, arkosic_______

49

549

Summary:
Miocene (undifferentiated) _____________________________ Upper Eocene (Barnwell formation) ________________________ Middle Eocene (Claiborne group, undifferentiated) Upper Cretaceous (Tuscaloosa formation)

50

50

100

150

35

185

364

541

Potential Water-Bearing Zones:
Sand: fine to coarse-grained______________________________________ Sand: fine to coarse-grained_________________________________________ Sand: fine to coarse-grained_________________________________

30

140

20

290

10

510

Location: In Louisville Owner: City of Louisville Drilled: March 1952

JEFFERSON COUNTY
Well No.: GGS 219 Elev.: 3001

Thickness (feet)

Depth (feet)

No samples ____ -------------------------------------------------------------------

25

25

In Upper Eocene: Jackson Group: Barnwell Formation:

Marl: yellowish-green to gray, silty, somewhat indurated at

depth, fossiliferous (Foraminifera); interbedded sand, fine

to coarse-grained, angular _

92

117

Nonion advena at 25. Valvulineria jacksonensis at 75. Angulogerina ocalana prominent at 95.

Limestone prominent at 102-107.

1Average elevation based on Georgia State Highway Maps.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

237

)Iiddle Eocene: Claiborne Group (Undifferentiated):

Thickness (feet)

Limestone: white to gray, argillaceous, sandy, micaceous, car-

bonaceous, fossiliferous (macroshells and bryozoan re-

mains); clay, brown, micaceous, lignitic_

_______________

5

Marl: dark-green, somewhat indurated, sandy, phosphatic

(finely disseminated), carbonaceous, fossiliferous (Fora-

minifera) ; interbedded sand, fine to coarse-grained, angu-

lar, phosphatic

___________________________

58

Buliminella robertsi, Cibicides westi at 155.

Sand: fine to medium-grained, angular, abundantly glauconitic; interbedded marl, dark gray, silty, coarsely glauconitic, fossiliferous (Foraminifera at certain horizons)____________ 67

Valvulineria jacksonensis var. at 195. Anomalina sp. at 225.

Clay: dark-green to brown, fissile, lignitic; inclusions of kaolin, light-gray, somewhat indurated, sandy, micaceous, lignitic 4

Lignite abundant at 250.

Depth (feet)
122 180
24 7
251

Summary:

No samples ________ ---------------- ------------------------------- ------------------------------------ 25

25

In upper Eocene (Barnwell formation)---------------------------

92

117

Middle Eocene (Claiborne group, undifferentiated)__

134

251

Potential Water-Bearing Zones:

Sand: fine to coarse-grained_______ ---------------------------------------------

10

117

Sand: fine to coarse-grained_____________________

______________________

5

127

Sand: fine to medium-grained_________________________________________________

30

210

Location: Few miles north of Louisville on U.S. Highway 1, 8th Military District
Owner: No. 1 Enola Kelly Driller: Owen Hembree Drilled: October 1955

JEFFERSON COUNTY Well No.: GGS 480

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: brick-red, sandy, limonitic________

20

20

Sand: fine to medium-grained, phosphatic (finely dissemi-

nated)

------------------ ------ ---------------------------------------------------------------- 10

30

238

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Eocene: Jackson Group: Barnwell Formation:

Thickness (feet)

Marl: gray to yellowish-green, fossiliferous (macroshells, echi-

noid and bryozoan remains, and Foraminifera); interbedded

sand, fine to coarse-grained~~-

80

Valvulineria jacksonensis at 30-40.

Limestone: light-gray, massive, saccharoidal, sandy, sparsely

phosphatic, fossiliferous (casts and molds of megafossils)

10

Sand: fine to medium-grained, angular, sparsely phosphatic__

10

Depth (feet)
110
120 130

Middle Eocene: Claiborne Group (Undifferentiated):

Indurated marl: dark-green, sandy, coarsely glauconitic, phos-

phatic, fossiliferous (fragments and molds of megafossils,

echinoid and bryozoan remains, Ostracods, and Foraminifera) 20

150

Nonion advena, Cibicides anwricanus var. antiquus at 140150.

Limestone: gray to yellowish-green, massive, saccharoidal,

sandy, sparsely phosphatic, fossiliferous (fragments and

molds of megafossils)___

__ --~--------------- ______________ _ 20

170

No samples ---------------------~ __________________ -~----------------------------------------~---

10

180

Sand: fine to medium-grained, angular, phosphatic~---

20

200

Marl: dark-green, somewhat indurated and fissile, glaucon-

itic; interbedded sand, fine to medium-grained, angular__

70

270

Glauconite and siderite nodules prominent at 230-240.

Sand: fine to coarse-grained, phosphatic; interbedded clay,

dark-brown, fissile, carbonaceous, micaceous

50

320

Upper Cretaceous: Tuscaloosa Formation:

Sand: fine to coarse-grained; and clay, green to red (mottled),

fissile

10

330

Sand: fine to coarse-grained, limonitic ~

70

400

Sand: coarse-grained, angular, arkosic, limonitic, sideritic,

pyritiferous; interbedded kaolin, white to gray to red

(mottled), micaceous

_ __ --~~

350

750

Kaolin (mottled) and siderite nodules prominent at 400-410.

Summary:

Miocene (undifferentiated) ___

30

30

Upper Eocene (Barnwell formation)___________

100

130

Middle Eocene (Claiborne group, undifferentiated)_______________

190

320

Upper Cretaceous (Tuscaloosa formation) __ ---------------------------------~------- 430

750

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

239

Potential Water-Bearing Zones:

Thickness (feet)

Sand: fine to medium-grained____________________________________________________

10

Sand: fine to medium-grained ____________________________________________________________ _ 20

Sand1 : fine to coarse-grained___ _______________________________________

80

Depth (feet)
130 200 400

Samples of very poor quality.

Remarks:

Location: Northeast of Wadley at Smith's Fish Pond Owner: No.1 W. P. Smith Driller: M. M. Gray Drilling Company Drilled: June 1957

JEFFERSON COUNTY
Well No.: GGS 532 Elev.: 1802

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, angular, arkosic; clay, brick-red,

sandy, limonitic _______________ _______________ _________________ ------------------------- 30

30

Oligocene(?) (Undifferentiated):

Limestone: white, crystalline, saccharoidal, very sandy,

coarsely glauconitic, fossiliferous (fragments and molds of

megafossils, and echinoid and bryozoan remains); inter-

bedded sand, fine to medium-grained____________________________________________ 35

65

Upper Eocene: Jackson Group: Barnwell Formation:

Marl: gray to light-brown, silty, indurated at certain levels,

carbonaceous, fossiliferous (Foraminifera) ; interbedded

sand, fine to coarse-grained; limestone, light-gray, some-

what saccharoidal, sandy, sparsely phosphatic, glauconitic,

fossiliferous (fragments and molds of megafossils) ___

185

250

Limestone prominent at 70-80. Valvulineria jacksonensis at 80-90. Nonion advena at 100-110. Discorbis assulata at 140-150.

Sand at 220-250.
-1Additiona1 sand aquifers occur below 400', hut owing to poor samples cannot be delineated.
2Average elevation based on Georgia State Highway Maps.

240

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Middle Eocene: Claiborne Group (Undifferentiated):

Thickness (feet)

Marl: gray to yellowish-green, somewhat indurated, phos-

phatic (finely disseminated), glauconitic at depth, fossil-

iferous (macroshells, Radiolaria, Ostracods and Foramini-

fera) ; interbedded sand, fine to coarse-grained, angular,

phosphatic; and limestone, white, sandy, coarsely glaucon-

itic, fossiliferous (macroshells, echinoid and bryozoan re-

mains) ------------------------------------------- --------------------------------- ----------------

70

Cibicides americanus var., Radiolaria at 250-260. Asterigerina texana, Cibicides westi at 280-290.

Macroshells prominent at 290-300.

Sand: fine to coarse-grained, angular, phosphatic

90

Depth (feet),
320
410

Summary:
Pliocene to Recent (undifferentiated) _ Oligocene ( ?) (undifferentiated) _____ _ Upper Eocene (Barnwell formation) __ Middle Eocene (Claiborne group, undifferentiated) ______

30

30

35

65

185

250

160

410

Potential Water-Bearing Zones:
Sand: fine to coarse-grained_________________ Sand: fine to coarse-grained______

30

250

90

410

JEFFERSON COUNTY

Location: In Louisville Owner: City of Louisville Driller: Virginia Supply and Well Company Drilled: April 1958

Well No.: GGS 554 Elev.: 3001

Thickness Depth

(feet)

(feet)

----------------------------------------------------------------------

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, angular, arkosic; and clay, darkbrown, lignitic ____ ----------------------------------------------------------------------------- 25

Upper Eocene: Jackson Group: Barnwell Formation:

Marl: gray to yellowish-green, silty, fossiliferous (Ostracods

and Foraminifera) ___ ___ ______________ _____________ ___________________________ 60

85

N onion advena, N onion inexcavatus at 30. Valvulineria jacksonensis at 50.

1Average elevation based on Georgia State Highway M.aps.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

241

Thickness (feet)
Sand: fine to coarse-grained, angular ______________________________________________ 10

Depth (feet)
95

Limestone: gray to cream, nodular, saccharoidal, glauconitic,

fossiliferous (casts and molds of megafossils, echinoid and

bryozoan remains) __ ---------------- ____________ _

______________ _

10

105

Sand: fine to coarse-grained, angular

10

115

Middle Eocene: Claiborne Group (Undifferentiated):

Marl: gray to light-brown, carbonaceous, micaceous; inter-

bedded limestone, gray to light-brown, saccharoidal, sandy,

micaceous, carbonaceous, phosphatic (finely disseminated),

fossiliferous (casts and molds of megafossils) _______

80

195

Discorbis sp., Cibicides americamts var. at 120.

Glauconite prominent at 165.

Clay: dark-brown to black, somewhat fissile, carbonaceous,

micaceous; and sand, fine to coarse-grained, angular_

90

285

Sand: coarse-grained, subangular, limonitic _______________ ___ __ ___ _____ 50

335

In Upper Cretaceous: Tuscaloosa Formation:

Sand: coarse-grained, limonitic, pyritiferous, arkosic; inter-

bedded clay, yellowish-green to light-brown, somewhat iron-

stained and mottled, micaceous, sideritic _

35

370

Sideritic nodules at 335.

Summary:
Pliocene to Recent (undifferentiated) ____ _ Upper Eocene (Barnwell formation) ___________________________ _ Middle Eocene (Claiborne group, undifferentiated)_ In Upper Cretaceous (Tuscaloosa formation)_

25

25

90

115

220

335

35

370

Sand: coarse-grained

Potential Water-Bearing Zones:

50

335

242

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Approximately 5.2 mi. north of junction of Highways 17 and 25 in Millen, Magnolia Springs, at domestic dwelling
Owner: No.1 U.S. Fish and Wildlife Service Driller: L. P. Mons and Sons Drilled: April 1951

JENKINS COUNTY
Well No.: GGS 227 Elev.: 1851

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Sand: fine to medium-grained, phosphatic, finely disseminated

phosphatic grains; interbedded clay, light-gray to black, lig-

nitic, micaceous ---------------------------------------------------------------------------------- 3

3

Sand: fine to medium-grained; interbedded clay, tan, sandy

22

25

Upper Eocene: Jackson Group: Cooper Marl:

Marl: cream, hard lime nodules, fossiliferous (macroshells,

abundant echinoid and bryozoan remains, Ostracods, and

Foraminifera); and clay, dark brown, lignitic__

95

120

Discorbis alveata, Discorbis assulata, Spi1illina sp., Planularia truncana, Siphonina jacksonensis, Nodosaria fissicostatf!-, Cibicides lobatulus at 70-75.
Marginulina cocoaensis, Guttulina spicaeformis, Globulina gibba, Robulus limbosus var., Spiroplectanvmina mississippiensis var., Saracenaria sp., Planularia truncana, Eponides jacksonensis, Cibicides mississippiensis at 75-120.

Middle Eocene: Claiborne Group: Lisbon Formation:

Sand: fine to medium-grained, phosphatic, angular__

130

250

Limestone: light-gray, very dense (highly calcitized), sandy,

phosphatic, fossiliferous (macroshells and rare Ostracods

and Foraminifera) ________________________________________ ---------------------------------- 59

309

Summary:
Miocene (undifferentiated) Upper Eocene (Cooper marl) __ Middle Eocene (Lisbon formation)

25

25

95

120

189

309

Potential Water-Bearing Zones: Sand: fine to medium-grained____________________________________________________ Limestone ________ -------------------------------------------------------------------------------
1AvETagc elevation based on Georgia State Highway Maps.

40

250

59

309

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

243

Location: In Lakeland Owner: City of Lakeland Driller: Layne-Atlantic Company Drilled: May 1953

LANIER COUNTY
Well No.: GGS 346 Elev.: 1751

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, inclusions of kaolin; inter-

bedded with clay, light-gray to yellow to red (mottled), very

sandy, limonitic _____________________ --------------------------------------------------

64

64

Miocene (Undifferentiated):

Clay: light-gray or olive-green, somewhat indurated, cherty,

phosphatic (white phosphatic pebbles)________________________

20

84

Sand: fine to medium-grained, phosphatic_________

10

94

Clay: light-gray to white, indurated, sandy, carbonaceous

11

105

Limestone: light-gray to white, dense (much calcitized),

sandy, finely disseminated phosphatic grains

____ ______ ___ 20

125

Clay: turquoise-blue, somewhat indurated, tough, sandy__

29

154

Dolomitic limestone: light-brown, saccharoidal, phosphatic

69

223

Oligocene (Undifferentiated):

Limestone: light-gray to cream, dense (much calcitized), nodu-

lar, fossiliferous (Foraminifera)__

_________________ ___ __ ___________ 108

331

Pyrgo sp., Dictyoconus2 sp. at 223. Miliolidae prominent at 280-302.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, very dense (highly calcitized), massive,

fossiliferous (bryozoan and echinoid remains, macroshells,

and some Foraminifera)-------------------------------------------------------------------- 19

350

Operculinoides sp. at 331-350.

Summary:

Pliocene to Recent (undifferentiated) ______________ ----------------------------------- 64

64

Miocene (undifferentiated) -------------------------------------------------------------------- 159

223

Oligocene (undifferentiated) ------------------------------------------------------------------ 108

331

Upper Eocene (Ocala limestone)------------------------------------------------------------ 19

350

'Average elevation based on Georgia State Highway Maps. 'Reworked(?) fossil of middle Eocene age.

244

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Potential Water-Bearing Zones:

Thickness (feet)

Sand: fine to medium-grained_______________________________________________________________ 10 Limestone ____________ --------------------------------------------------------------------------------------- 127

Depth (feet)
94 350

Location: Dublin Owner: City of Dublin Driller: Layne-Atlantic Company Drilled: May 1955

LAURENS COUNTY
Well No.: GGS 438 Elev.: 198

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: coarse-grained, angular, arkosic; clay, light-gray to

red (mottled), sandy, limonitic; residual limestone, white to

yellow, iron-stained, dense, crystalline, cherty, sandy, fos-

siliferous (fragments, casts and molds of megafossils, echi-

noid and bryozoan remains, and some Foraminifera)_

5

5

Oligocene (Undifferentiated):

Limestone: white to yellow, dense, crystalline, cherty, sandy

(sandier at depth), fossiliferous (fragments, casts and

molds of megafossils, echinoid and bryozoan remains, and

Foraminifera) ; interbedded clay, olive-green to tan, sandy______ 40

45

Quinqueloculina sp., Pyrgo sp., Asterigerina cf. A. subacuta at 5-28. Gypsina globula1 at 28-35.

Indurated sand: fine-grained______ _

7

52

Upper Eocene: Jackson Group: Barnwell Formation:

Marl: gray, silty, fossiliferous (Foraminifera) ______

18

70

Discorbis cocoaensis, Nonion advena, Nonion inexcavatus, Cibicides lobatulus at 52-56.

N onion advena common, Valvulineria jacksonensis abundant at 56-65.

Limestone: cream, dense, crystalline, very sandy___________________________ 20

90

Marl: gray, silty, fossiliferous (Foraminifera)------------------------------ 78

168

Limestone: light-gray to white, somewhat saccharoidal,

coarsely glauconitic, fossiliferous (macroshells, echinoid

and bryozoan remains and Foraminifera) --------------------------- 32

200

Gypsina globula, Operculinoides floridensis, Lepidocyclina sp., Asterocyclina sp. at 176-200.

1Reworked( ?) fossil of middle Eocene .age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

245

Middle Eocene: Claiborne Group (Undifferentiated):

Thickness Depth

(feet)

(feet)

Limestone: gray, dense, saccharoidal, sandy, micaceous, phos-

phatic (finely disseminated), fossiliferous (fragments, casts

and molds of megafossils, and Foraminifera) ___________________________ 20

220

Gyroidina soldanii var., Nonion advena, Cibicides americanus var., Cibicides cf. C. refulgens at 206-216.

Marl: dark-green, silty, fossiliferous (Ostracods and Fora-

minifera) _________________________

______________________________________________________ 60

280

Nonion micrus, Cibicides americanus var., Cibicides westi at 235-245.

Sericitic clay: yellowish-green to pink, prominent at 245267.

Limestone: gray to dark-green, argillaceous, dense, carbona-

ceous, micaceous, coarsely glauconitic, sandy, fossiliferous

(fragments, casts and molds of megafossils); interbedded

sand, fine to medium-grained, lignitic, phosphatic; and clay,

dark-green to brown, somewhat indurated_______________

94

374

Macroshells prominent at 318-328.

Sand: medium to coarse-grained, angular, phosphatic_

30

404

Upper Cretaceous: Tuscaloosa Formation:

Sand: coarse-grained, angular, limonitic; interbedded kaolin,

gray to red (mottled), micaceous, sandy

16

420

Sand: fine to coarse-grained, angular_______

24

444

Kaolin: gray to red (mottled), micaceous

24

468

Sand: coarse-grained, angular, sideritic__ _

102

570

Siderite nodules prominent at 478-490.

Sand: fine to coarse-grained, angular, sideritic; interbedded

clay (or kaolin) , gray to red, micaceous, sandy _

165

735

Summary:

Pliocene to Recent (undifferentiated) _

5

5

Oligocene (undifferentiated) ____________

_ ____________ _

47

52

Upper Eocene (Barnwell formation)_

______________________________ _ 148

200

Middle Eocene (Claiborne group, undifferentiated) ___ _

204

404

Upper Cretaceous (Tuscaloosa formation) __

331

735

246

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Potential Water-Bearing Zones:

Thickness (feet)

Sand: fine to coarse-grained__

_______________

30

Sand: fine to coarse-grained_______________________________ ----------------------------------- 24

Sand: fine to coarse-grained. _______________

102

Sand: fine to coarse-grained__________

23

Sand: fine to coarse-grained__________ ------------------------------

16

Sand: fine to coarse-grained

30

Depth (feet)
404 444 570 626 672 720

LEE COUNTY

Location: 0.45 mi. west of Main Park Entrance, few hundred yards north of caretaker's residence in Chehaw State Park
Owner: No. 1 Chehaw State Park Drilled: January 1937

Well No.: GGS 74 Elev.: 216

Thickness Depth

(feet)

(feet)

In Residuum:
Sand: coarse-grained, angular__ No samples ___

37

37

13

50

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, nodular, much calcitized, glauconitic at

depth, fossiliferous (macroshells, bryozoan remains and

Foraminifera)

_______________ _

130

180

Operculinoides sp. at 60-70. Gypsina globula at 90-100.
Amphistegina pinarensis var., Operculina mariannensis at 150-160.

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: light-gray, dense, crystalline, sandy, coarsely

glauconitic at depth, fossiliferous (fragments, casts and

molds of megafossils, echinoid and bryozoan remains, and

Foraminifera)

95

275

Cibicides pseudoungerianus var. lisbonensis at 210-220. Asterocyclina monticellensis, Asterigerina sp. at 220-230. Glauconite prominent at 250-260.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

247

Tallahatta Formation:

Thickness Depth

(feet)

(feet)

Sand: fine to coarse-grained, angular, phosphatic, fossilifer-

ous (common to abundant macroshells); interbedded marl,

gray, silty, micaceous_________________________________

__________________ 105

380

Cibicides tallahattensis at 360-370.

Limestone: gray, dense, sandy; marl, gray, silty, mica-

ceous, glauconitic (finely disseminated), fossiliferous

(Foraminifera)

------------------------------------------- ____________________________ 30

410

Valvulineria jacksonensis var. at 380-390. Cibicides blanpiedi at 390-400.

Sand: fine to medium-grained, subangular, phosphatic; inter-

bedded marl, gray, silty, micaceous, fossiliferous (Fora-

minifera) _______ --------------------------------------------------------------------------

40

450

Black phosphatic pebbles prominent at 410-420.

Fish teeth prominent at 430-440.

Limestone (or buhrstone) : dark-gray to brown, very dense,

crystalline, sandy, cherty; some marl, as above

20

470

Lower Eocene: Wilcox Group (Undifferentiated):

Indurated sand: fine to coarse-grained, coarsely and abun-

dantly glauconitic, fossiliferous (Foraminifera) _____________________ 50

520

Valvulineria wilcoxensis, Cibicides howelli, Eponides dorfi at 480-490.

Marl: dark-gray, silty, micaceous, carbonaceous__

40

560

Sand: fine to coarse-grained, angular, green quartz grains __ _

10

570

Paleocene: Midway Group: Clayton Formation:

Indurated sand: fine to medium-grained, glauconitic, fossil-

iferous (macroshells and Foraminifera) ; interbedded clay,

black, fissile, carbonaceous, micaceous (finely disseminated)_ 50

620

Operculinoides catenula at 570-580. Discorbis midwayensis var. trinitatensis at 590-600.

Limestone: light-gray, dense, crystalline, coarsely but sparse-

ly glauconitic, fossiliferous (carrying fragments, casts and

molds of megafossils and bryozoan remains)

100

720

Limestone: as above, but very sandy

10

730

Sand: medium-grained, angular _

30

760

248

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Cretaceous: Providence Sand: Indurated sand: medium-grained, angular_____ _ Marl: gray, silty, chalky, fossiliferous (Foraminifera) Anomalina pseudopapillosa at 790-800.

Thickness Depth

(feet)

(feet)

30

790

10

800

Summary:

Residuum ___________ ------------------------------- ____ -------------------------------- ----

37

37

No samples ----------------------------------------------------------- ___ ---------------------------------- 13

50

In upper Eocene (Ocala limestone)________________________________________________________ 130

180

Middle Eocene (Lisbon formation)____________________________

95

275

Middle Eocene (Tallahatta formation)-----------------------------------

195

470

Lower Eocene (Wilcox group, undifferentiated) ________________________ _____ 100

570

Paleocene (Clayton formation)_____________ _________________ ___ ______________

190

760

Upper Cretaceous (Providence sand)___

40

800

Potential Water-Bearing Zones:

Sand: fine to coarse-grained___ _________________

_______________________ _

105

38()

Sand: fine to medium-grained ______ _______ ____

---------------------------------- 40

450

Sand: fine to coarse-grained------------------------------------------------------------------- 10

570

Limestone ---------------------------

__________________ --------------------------------------- 100

729

Sand: fine to medium-grained__

30

760

Location: Approximately 3.5 mi. northeast of center of Leesburg, 0.5 mi. south of Muckalee Creek bridge, east side of State Highway 195, about 20 ft. east of dwelling
Owner: No. 1 Will Gillam Driller: F. P. Jones Drilled: February 1952

LEE COUNTY
Well No.: GGS 270 Elev.: 265

Thickness Depth

(feet)

(feet)

Residuum: Sand: fine to coarse-grained, angular, limonitic__ _

25

26

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, dense, crystalline, much calcitized, some-

what saccharoidal, porous at certain levels, fossiliferous

(remains of macroshells, echinoids and bryozoa and some

Foraminifera) ___ _____________ _____________ ___ _______________________ _______ ________ ______ 45

'[0

Operculina sp., Lepidocyclina sp. at 60-70.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

249

Summary:

Thickness (feet)

Residuum -------------------------------------------------------------------------------------------

25

Upper Eocene (Ocala limestone) __________ ------------------------------------------------- 45

Depth (feet)
25 70

Limestone ---------------

Potential Water-Bearing Zones:

45

70

LEE COUNTY

Location: 3.2 mi. north-northeast of Leesburg, approxi- Well No.: GGS 271

mately 1 mi. east of State Highway 195, 0.25 mi. south Elev.: 267

of east-west county road in bottom of valley

Owner: No. 1 Farm Craft Association (Citizens Bank, Americus)

Driller: F. P. Jones

Drilled: February 1952

Thickness Depth

(feet)

(feet)

Residuum: Sand: fine-grained _______

25

25

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, much calcitized, rather massive, crystal-

line and somewhat saccharoidal, fossiliferous (macroshells,

echinoid and bryozoan remains, and some Foraminifera) _ 136

161

Operculina sp., Lepidocyclina sp. at 35-45.

Summary:
Residuum ------------------------------ -----------------------------------Upper Eocene (Ocala limestone) ________________________

25

25

136

161

Limestone

Potential Water-Bearing Zones:

136

161

250

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

LEE COUNTY

Location: Central-north part of county, 0.25 mi. south of Well No.: GGS 286

Lee-Sumter County line, 0.95 mi. northwest of New Hope Elev.: 354

Church, 0.5 mi. north of prominent curve in county road on west side of field

road, about 50 ft. north of dwelling

Owner: Robert Snead

Driller: F. P. Jones

Drilled: March 1952

Thickness Depth

(feet)

(feet)

Residuum: Clay: mottled, very sandy, limonitic_ Clay: brown, very sandy, limonitic__

30

30

15

45

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white to cream, calcitized, somewhat crystalline

and saccharoidal, fossiliferous (bryozoan remains and

Foraminifera) ------------------------------------------------- ______________

55

100

Operculina sp., Lepidocyclina sp. at 80-90.

Sand: medium-grained, angular __ _

39

139

Summary:
Residuum _____________ -----------------------------------------------------------------Upper Eocene (Ocala limestone) _____________________________________

45

45

94

139

Potential Water-Bearing Zones:
Limestone ______ --------------------------------- ----------------------------------------------Sand: medium-grained ______________

55

100

39

139

Location: 6.5 mi. due east of Central of Georgia R.R. crossing in Leesburg via county road, 1 mi. north on northsouth county road, west side of road at dwelling
Owner: No.1 Henrietta Hubert Driller: F. P. Jones Drilled: May 1952

LEE COUNTY
Well No.: GGS 299 Elev.: 286

Thickness (feet)

-Depth
(feet)

Residuum:
Clay: mottled, sandy, limonitic_______ Clay: brown to black, lignitic, sandy________

20

20

20

40

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

251

Upper Eocene: Jackson Group: Ocala Limestone

Thickness (feet)

Limestone: white to cream, calcitized, rather dense and crys-
talline, fossiliferous (macroshells, echinoid spines and frequent bryozoan remains, and Foraminifera) ___________________________ 100

Operculina mariannensis at 40-50.

Sand: medium to coarse-grained, angular______ _

20

Depth (feet)
140 160

Summary:

Residuum __

---------------------------------- -----------------------------------

Upper Eocene (Ocala limestone) ______

40

40

120

160

Potential Water-Bearing Zones:

Limestone -------------

----------------

Sand: medium to coarse-grained____

100

140

20

160

Location: 10.2 mi. northwest of Leesburg, 0.55 mi. west of Highway 19
Owner: No. 1 Dixie Pines Company Driller: Southeastern Drilling Company Drilled: March 1955

LEE COUNTY
Well No.: GGS 424 Elev.: 303

Thickness Depth

(feet)

(feet)

Residuum:

Clay: bluish-gray to tan to red (mottled), very sandy, limon-

itic ___

-------------- --------------- ----------------

------------------

20

20

Sand: fine to medium-grained, angular ______________________________

10

30

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: yellow, iron-stained, much leached, very sandy,

fossiliferous (megafossils, echinoid and bryozoan remains

and Foraminifera) ___________________

________________________________ _

10

40

Sand: fine to coarse-grained, angular___

____________ _

16

56

Gypsina globula, Eponides jacksonensis at 50-60.

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: cream, sandy, glauconitic (finely disseminated),

fossiliferous (macroshells and bryozoan remains); inter-

bedded marl, gray, silty, glauconitic (finely disseminated),

fossiliferous (Foraminifera) _

________________________________________ 18

74

Siphonina claibornensis, Gyroidina soldanii var., Cibicides americanus, Cibicides westi at 60-70.

252

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Sand: fine to medium-grained, angular; interbedded marl and

limestone, as above_

64

Depth (feet)
138

Tallahatta Formation:

Marl: gray, silty, glauconitic (finely disseminated), fossilifer-

ous (Foraminifera) ______ ---------------------------------- _----------------------------- 4

142

Planularia sp., Cibicides americanus var., Cibicides westi, Cibicides tallahattensis at 130-140.

Sand: fine to coarse-grained, angular, phosphatic, fossilifer-

ous (macroshells at certain levels); interbedded marl, gray,

silty, glauconitic (finely disseminated), fossiliferous (Fora-

minifera) ; and limestone, gray, dense, sandy, cherty, fos-

siliferous (macroshells) __________________

78

220

Macroshells prominent at 170-180.

Valvulineria jacksonensis var., Siphonina claibornensis, N onion advena, Cibicides tallahattensis, Cibicides blanpiedi at 170-180.

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: tan to olive-green to red (mottled), dark-gray at depth,

glauconitic, carbonaceous, micaceous, pyritiferous at depth

80

300

Sand: fine to coarse-grained, angular, abundantly glauconitic,

contains grains of pale-green quartz_____ _________________ _______________ 25

325

Paleocene(? ) :

Sand: as above; interbedded clay, light-gray, blocky, somewhat

indurated, micaceous, carbonaceous

25

350

Paleocene: Midway Group: Clayton Formation:

Clay: dark-gray, carbonaceous, micaceous; interbedded sand,

fine to coarse-grained, angular, somewhat indurated; and

limestone, light-gray, dense, crystalline, coarsely but sparse-

ly glauconitic, sandy, fossiliferous (fragments, casts and

molds of megafossils, bryozoan remains and Foraminifera) ____ 34

384

Discorbis midwayensis, Valvulineria scrobiculata, Siphonina prima, Eponides lotus, Cibicides newmanae at 370-380.

Limestone: light-gray to white, crystalline, coarsely but

sparsely glauconitic, sandy, fossiliferous (as above) ______________ 46

430

Robulus midwayensis, Eponides lotus, Anomalina midwayensis, Cibicides howelli at 380-390.

No samples ___

50

480

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

253

Thickness (feet)
In Upper Cretaceous: Providence and Ripley (Undifferentiated):

Marl: dark-bluish-gray, sandy, somewhat chalky, micaceous,

pyritiferous, fossiliferous at certain levels (macroshells,

Ostracods and Foraminifera) ; interbedded sand, fine to

coarse-grained, angular, indurated, fossiliferous (a coquina

at certain levels) ______________________________________________________________________ _

210

Anomalina pseudopapillosa at 480-490. Gaudryina rudita at 620-630. Vaginulina webbervillensis at 680-690.

Depth (feet)
690

Summary:

Residuum

- -------------

30

30

Upper Eocene (Ocala limestone)

26

56

Middle Eocene (Lisbon formation)

82

138

Middle Eocene (Tallahatta formation) __

82

220

Lower Eocene (Wilcox group, undifferentiated) _

105

325

Paleocene (?)

-------------------------

25

350

Paleocene (Clayton formation) No samples ________ _____________________

80

430

50

480

In Upper Cretaceous (Providence and Ripley, undifferentiated) ____ 210

690

Potential Water-Bearing Zones:
Sand: fine to coarse-grained __ Sand: fine to coarse-grained __ Sand: fine to coarse-grained Limestone _______ _______________
Sand: fine to coarse-grained

18

160

25

325

10

350

46

430

46

602

Remarks: On the basis of the electric log, top of the Upper Cretaceous is probably at 460.

LIBERTY COUNTY

Location: 1.6 mi. northwest of County Courthouse at ,Hinesville, and about 200 yd. southwest of Taylors Creek Rd. at Camp Stewart Owner: U. S. Government (War Department) Driller: Layne-Atlantic Company Drilled: November 1940

Well No.: GGS 6 Elev.: 91

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, finely disseminated phos-

phatic grains ---------------------------------------------------------------------- _______________ 100

100

Sand: coarse-grained, arkosic

50

150

254

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

In Miocene (Undifferentiated):

Thickness (feet)

Sand: coarse-grained, arkosic; and clay, dark-green, silty__________ 100

Limestone: white, sandy, phosphatic; sand and clay, as above_ 10

Clay: dark-green, silty, phosphatic

75

Sand: fine to coarse-grained, phosphatic

20

No samples

40

Clay: as above; dolomitic limestone, brown, saccharoidal,

sandy, phosphatic ____

40

Dolomitic limestone: brown, saccharoidal, sandy, phosphatic;

limestone, white, very sandy, phosphatic

10

No samples ____

26

Limestone: light-gray to white, dense (much calcitized),

sandy, phosphatic, fossiliferous (casts and molds of mega-

fossils) __

____________ _

No samples

20

Depth (feet)
250 260 335 355 395
435
445 471
471 491

In Oligocene (Undifferentiated):

Limestone: as above; fragments of cream limestone, nodular

(much calcitized), fossiliferous (Foraminifera)

?

491

No samples

______________

_____________________ _

20

511

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, saccharoidal (much calcitized), crys-

talline, fossiliferous (abundant bryozoan remains and

Foraminifera)

___ -------------------------------------- ______________ _______________ 305

816

Opmculinoides sp., Gypsina globula, Asterocyclina nassauensis at 511. Arnphistegina pina1ensis var. at 730-750.

Summary:
Pliocene to Recent (undifferentiated) __ _ In Miocene (undifferentiated) _ No samples _______________ In Oligocene (undifferentiated) No samples ____________________
In upper Eocene (Ocala limestone) ____ _

150

150

321

471

20

491

?

491

20

511

305

816

Potential Water-Bearing Zones:
Sand: coarse-grained Sand: fine to coarse-grained Limestone __ _

50

150

20

355

315

816

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

255

Location: 1.8 mi. north of Flemington, Liberty (Camp Stewart)
Owner: U. S. Government (War Department) Driller: Virginia Machine and Well Company Drilled: October 1942

Field

LIBERTY COUNTY
Well No.: GGS 38 Elev.: 46

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated): Clay: bluish-gray to red (mottled), sandy Clay: brick-red, sandy ___ __ ___ _

10

10

5

15

Sand: fine to coarse-grained, arkosic; interbedded clay, dark-

gray to black, lignitic, micaceous ________________________

______________ 25

40

Sand: fine-grained, argillaceous, finely disseminated phos-

phatic grains ------------------------------------------- ---------------------- __ ____

5

45

Clay: gray to bluish-gray, somewhat indurated, blocky, phos-

phatic (brown phosphate pebbles)

____________ 10

55

Miocene (Undifferentiated):

Clay: dark-green, silty, micaceous, reddish-brown phosphatic

grains

245

300

Limestone: light-gray, very sandy, phosphatic, fossiliferous

(fragments and impressions of megafossils) _____

_______________ 7

307

Clay: as above, but much sandier _

48

355

Limestone: white, dense, very sandy, phosphatic; interbed-

ded dolomitic limestone, light-brown, saccharoidal, sandy,

phosphatic

30

385

Oligocene (Undifferentiated):

Limestone: gray, very dense (much calcitized), sandy, fos-

siliferous (casts and impressions of megafossils); scattered

fragments of porous limestone, cream, fossiliferous (Fora-

minifera) ___ __________ ______ _____________________ _____ __________________ _____________________ 25

410

Rotalia mexicana var. at 385-390.

Summary:

Pliocene to Recent (undifferentiated) __________ __________________________

55

55

Miocene (undifferentiated) _________________ ----------------------------------------------- 330

385

Oligocene (undifferentiated) _______ -------------------------------------------------------- 25

410

256

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Potential Water-Bearing Zones: None observed to 410.

Thickness Depth

(feet)

(feet)

Remarks: Well reportedly reached a total depth of 508.

Location: 7 mi. northwest of Liberty County Courthouse at Hinesville, about 1,600 ft. northeast of Taylors Creek Rd., at Camp Stewart
Owner: U.S. Government (War Department) Driller: Virginia Machine and Well Company Drilled: October 1940

LIBERTY COUNTY
Well No.: GGS 66 Elev.: 88

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, phosphatic (finely dissemi-

nated) ; interbedded clay, dark-gray, lignitic, micaceous__________ 80

80

Sand: very coarse-grained, rounded _---------------------------------------------- 65

145

Sand: fine-grained __________

50

195

In Miocene (Unfiifferentiated):

Clay: dark-green, silty, phosphatic ___

50

245

Clay: pale to dark-green, somewhat indurated, sandy, phos-

phatic ____ ____________ --------------------------------------------------------------------- 110

355

Clay: dark-green, very sandy, phosphatic _____

10

365

Sand: very coarse-grained

5

370

Sand: fine to coarse-grained, phosphatic; limestone, white,

dense (much calcitized), very sandy, phosphatic, fossilifer-

our (casts and molds of megafossils) _______ ---------------------------------- 70

440

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic _____ -------------------------------------------------------------------------------------------- 5

445

Limestone: white to light-gray, highly calcitized, sandy, phos-

phatic _______________ ---------------------------------------------------------------------------------- 15

460

Quinqueloculina sp., Massilina sp. at 460.

No samples

40

500

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

257

In Upper Eocene: Jackson Group: Ocala Limestone:

Thickness (feet)

Limestone: light-gray, crystalline (much calcitized), fossili-

ferous (bryozoan remains and Foraminifera) ___

?

Gypsina vesiculariR, Operculinoides sp., Asterocyclina sp. at 500.

Depth (feet)
500

Summary:
Pliocene to Recent (undifferentiated) In Miocene (undifferentiated) _ No samples ___________ _ In upper Eocene (Ocala limestone)

------------------ 195

195

265

460

40

500

?

500

Potential Water-Bearing Zones: Limestone __ __ ___________ _

55

500

LIBERTY COUNTY

Location: 1.7 mi. northwest of Liberty County Courthouse at Hinesville, 1,900 ft. northeast of Taylors Creek Rd., at Camp Stewart
Owner: U.S. Government (War Department) Driller: Layne-Atlantic Company Drilled: December 1940

Well No.: GGS 72 Elev.: 86

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated): Sand: fine-grained, phosphatic (finely disseminated) No samples _ Sand: coarse-grained, arkosic

100

100

20

120

62

182

In Miocene (Undifferentiated) :

Clay: dark-green, sandy, phosphatic; sand, fine to coarse-

grained, arkosic --------------------------------------------------------------------

98

280

Clay: dark-green, phosphatic, cherty

40

320

No samples

20

340

Dolomitic limestone: light-brown, sandy, phosphatic; inter-

bedded limestone, gray, dense (much calcitized), very

sandy, phosphatic

100

440

258

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: as above; with fragments of limestone, white,

dense (much calcitized), fossiliferous (casts of megafossils

and Foraminifera)

______________________ _

70

Rotalia mexicana var. at 440-452.

No samples

20

Depth (feet)
510 530

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, rather massive, much calcitized, fossilifer-

ous (bryozoan remains, macroshells and Foraminifera)

120

650

Operculinoides floridensis, Asterocyclina sp. at 530-550. Asterocyclina nassauensis, Gypsina globula, Pseudophragmina flintensis at 550-570.

Summary:
Pliocene to Recent (undifferentiated) In Miocene (undifferentiated) Oligocene (undifferentiated) No samples _____________ _ In upper Eocene (Ocala limestone)

182

182

258

440

70

510

20

530

120

650

Limestone

Potential Water-Bearing Zones:

210

650

Location: Long 81 20'45" W., Lat 31 41'15" N. Owner: No. 1 Jelks-Rogers Driller: E. B. LaRue Drilled: 1953

LIBERTY COUNTY
Well No.: GGS 363 Elev.: 26 (derrick floor)

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, angular, finely disseminated

black phosphatic grains; interbedded clay, dark-gray, silty,

micaceous ____ ------------------------------------- -------------------------------------------------- 80

80

Sand: coarse-grained, subangular, arkosic

30

110

Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic _________________ ---------------------------- 175

285

Claystone, dark-brown, dense, sandy, micaceous, prominent at 240-260.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

259

Thickness (feet)

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic

45

Depth (feet)
330

Clay: dark-green, sandy, phosphatic

15

345

Limestone: white, massive, sandy, phosphatic, fossiliferous

(fragments, casts and molds of megafossils)

30

375

Oligocene (Undifferentiated):

Limestone: light-gray, somewhat chalky (weathered 1), nodu-

lar, calcitized, fossiliferous (bryozoan remains and Fora-

minifera)

90

465

Rotalia mexicana var. at 400-420. Asterocyclina,l sp., Gypsina globula1 at 440-460.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, rather massive, nodular (calcitized), fos-

siliferous (macroshells, echinoid and bryozoan remains, and

some Foraminifera)

335

Operculinoides cf. 0. flo1idensis at 460-480. Gypsina globula at 480-500. Asterocyclina nassauensis at 500-520. Pseudophragmina flintensis at 520-540. Camerina striatoreticulata at 700-720. Amphistegina pinarensis var. at 740-760. Lepidocyclina (Polylepidina) antillea1 at 1000-1020.

Limestone: as above, but granular, loosely consolidated

240

800 1,040

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: white, massive, somewhat nodular (calcitized), coarsely but sparsely glauconitic, fossiliferous (macroshells, echinoid and bryozoan remains and Foraminifera) _____ _ 40

Asterocyclina monticellensis at 1040-1060. Discorbis inornatus at 1060-1080.

Limestone: as above; and dolomitic limestone, gray to light-

brown, saccharoidal, sparsely glauconitic, gypsiferous_____

220

Limestone: cream, granular, loosely consolidated, cherty

135

- Chert abundant at 1320-1340.
'Reworked ( 1) fossil of middle Eocene age.

1,080
1,300 1,435

260

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Tallahatta Formation:

Thickness Depth

(feet)

(feet)

Marl: brownish-green, somewhat indurated, silty, glauconitic, micaceous, pyritiferous, fossiliferous (Foraminifera)

70 1,505

Cyclammina sp., Robulus alato-limbatus, Marginulina vacavillensis, Gyroidina soldanii var., Reussella subrotundata, Valvulineria jacksonensis var., Cibicides pippeni var., Cibicides blanpiedi at 1460-1480.

Lower Eocene: Wilcox Group (Undifferentiated):
Limestone: light-brown, argillaceous, somewhat granular and loosely consolidated, glauconitic, micaceous, cherty at depth ___ 175
Robulus sp., Eponides cf. E. dorfi at 1500-1520.

Indurated sand: light-gray, medium-grained, coarsely but

abundantly glauconitic; grades downward into limestone,

cream to light-gray, much calcitized, rather dense, finely

glauconitic (a pepper and salt appearance), cherty at cer-

tain levels

______________ _

160

1,680 1,840

Paleocene: Midway Group: Clayton Formation:

Marl: dark-gray, somewhat indurated and tough, silty, coarse-

ly glauconitic, micaceous, fossiliferous (Foraminifera) ;

interbedded indurated sand, light-gray, fine-grained, mica-

ceous, fossiliferous (Foraminifera)

60

Spiroplectammina wilcoxensis, Nodosaria affinis, Polymorphina cf. P. cushmani, Guembelina sp., Anomalina acuta at 1860-1880.
Robulus midwayensis at 1890-1900.

Limestone: light-gray, rather dense, crystalline, sandy,

coarsely glauconitic, fossiliferous (Foraminifera)

40

Robulus pseudo-mamilligerus, Robulus cf. R. turbinatus at 1900-1920.
Vaginulina longiforma at 1920-1940.

Limestone: gray, sandy, glauconitic; interbedded marl, gray,

glauconitic, fossiliferous (Foraminifera)

155

Robulus midwayensis at 1960-1980.

Limestone (or calcareous sandstone): gray, sandy___________

185

1,900
1,940 2,095 2,280

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

261

Upper Cretaceous: Post-Eutaw (Undifferentiated):

Thicknes'5 (feet'i

Marl: gray to brown at depth, carbonaceous, somewhat fissile

at depth, chalky, silty, much sandier at depth, micaceous,

glauconitic, pyritiferous

______ _____ ___ _______ 1,190

Guembelina sp. at 2280-2290. Planulina taylo1ensis at 2740-2750. Kyphopyxa christneri at 3090-3100. Vaginulina texana at 3290-3300.

Depth (feet)
3,470

Eutaw Formation (Restricted):

Sand: fine to medium-grained, somewhat indurated, phos-

phatic, fossiliferous (macroshells); interbedded clay, gray,

micaceous, carbonaceous, somewhat fissile __

145

3,615

Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, arkosic; interbedded

clay, yellowish-green to red to purple (mottled), sandy,

micaceous

255

Clay (or shale): dark-gray to black, fissile, carbonaceous,

micaceous (finely disseminated) ; interbedded sand, fine to

coarse-grained, angular, arkosic

95

Indurated sand: fine to coarse-grained, glauconitic _____

20

Sand: fine to coarse-grained, angular, arkosic; interbedded

clay, yellowish-green to red to purple, greasy, sandy, mica-

ceous

265

3,870
3,965 3,985
4,250

Basement Complex (Undifferentiated):

Crystalline Rock

4

Summary:

Pliocene to Recent (undifferentiated) __ _

110

Miocene (undifferentiated) ___

_________________

265

Oligocene (undifferentiated)

________________ _

90

Upper Eocene (Ocala limestone)

_________________________ _

575

Middle Eocene (Lisbon formation)

395

Middle Eocene (Tallahatta formation) ______

70

Lower Eocene (Wilcox group, undifferentiated) __ _

335

Paleocene (Clayton formation)

440

Upper Cretaceous (post-Eutaw, undifferentiated)

____ 1,190

Upper Cretaceous (Eutaw formation, restricted)

145

Upper Cretaceous (Tuscaloosa formation) __ __

_________________ 635

Basement complex (undifferentiated) ______________________________________________ 4

4,254
110 375 465 1,040 1,435 1,505 1,840 2,280 3,470 3,615 4,250 4,254

262 Limestone

GEORGIA GEOLOGICAL SURVEY BULLETIN 70 Potential Water-Bearing Zones:

Thickness Depth

(feet)

(feet)

705 1,080

Overall quality of cuttings poor.

Remarks:

Location: Taylors Creek, Camp Stewart Owner: U.S. Government (War Department) Driller: M. M. Gray Drilling Company Drilled: 1955

LIBERTY COUNTY
Well No.: GGS 460 Elev.: 50

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, limonitic; interbedded clay, bluish-gray

to tan to red (mottled), sandy _ ___ _ ____ _

40

40

Sand: coarse-grained, rounded, arkosic; clay, dark-green,

sandy, micaceous

100

140

In Miocene (Undifferentiated):

Clay: dark-green, sandy, micaceous

40

180

Clay: as above; interbedded limestone, light-gray, saccha-

roidal (much calcitized), sandy, phosphatic

80

210

Clay: bluish-gray, indurated, sandy, cherty; interbedded lime-

stone, light-gray, saccharoidal (much calcitized), sandy,

phosphatic, fossiliferous (casts and impressions of mega-

fossils) __

110

320

Limestone: gray to light-brown, saccharoidal (much calci-

tized), sandy, phosphatic, dolomitized at certain levels,

fossiliferous (fragments and casts of megafossils)

70

390

Oligocene (Undifferentiated):

Limestone: cream, massive, nodular (much calcitized), fos-

siliferous (Foraminifera)

20

410

Quinqueloculina sp., Rotalia mexicana var. at 390-400.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

263

Upper Eocene: Jackson Group: Ocala Limestone:

Thickness (feet)

Limestone: cream to white, saccharoidal (much calcitized),

crystalline, fossiliferous (macroshells, bryozoan remains

and Foraminifera)

_________________________________ _

58

Asterocyclina nassauensis, Gypsina vesicularis, Operculinoides floridensis at 410-420.
Pseudophragmina flintensis at 450-460.

Depth (feet)
468

Summary:
Pliocene to Recent (undifferentiated) In Miocene (undifferentiated) Oligocene (undifferentiated) ___ Upper Eocene (Ocala limestone)

140

140

250

390

20

410

58

468

Limestone

Potential Water-Bearing Zones :

78

468

Location: 0.5 mi. south of Midway, on U.S. Highway 17, at firetower
Owner: No. 1 State Forestry Department Driller: Bailey Drilling Company Drilled: 1957

LIBERTY COUNTY
Well No.: GGS 548 Elev.: 10

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, arkosic, phosphatic (finely disseminated) __ 10

10

Sand: fine to coarse-grained, rounded, arkosic; interbedded

clay, dark-gray, to black, fissile, lignitic, micaceous

17

27

Clay: dark-gray, blocky, carbonaceous ____ _

15

42

Sand: very coarse-grained, rounded, arkosic __

51

93

Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic; interbedded sand, fine

to coarse-grained, phosphatic _

____________________________ 214

307

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic; interbedded clay, dark-green, sandy, phosphatic;

sand, fine to coarse-grained, phosphatic

83

390

264

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: light-gray, rather dense and crystalline (much

calcitized), nodular, fossiliferous (Foraminifera)

55

Rotalia mexicana var. at 390-400.

Depth (feet)
445

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray to white, somewhat saccharoidal (much

calcitized), fossiliferous (bryozoan remains, Ostracods, and

(Foraminifera) _________________________

109

554

Operculinoides sp., Asterocyclina nassauensis at 441-451.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) __ _ Oligocene (undifferentiated) _ Upper Eocene (Ocala limestone)

93

93

297

390

55

445

109

554

Limestone

Potential Water-Bearing Zones:

164

554

Location: West side of Atlantic Coast Line R.R. in Ludowici
Owner: No. 1 City of Ludowici Driller: Gray Well and Pump Company Drilled: June 1939

LONG COUNTY
Well No.: GGS 67 Elev.: 69

Thickness Depth

(feet)

(feet)

No samples _

395

395

In Miocene (Undifferentiated):

Limestone: light-gray, sandy, phosphatic, fossiliferous (molds

and impressions of megafossils) ; sand, fine to medium-

grained; dolomitic limestone, light-brown, saccharoidal, sandy 10

405

Oligocene (Undifferentiated):

Limestone: gray, dense (much calcitized), fossiliferous

(Foraminifera) ; sand, as above

20

425

Rotalia byramensis var., Quinqueloculina sp. at 405-415. Opercnlinoides sp. at 415-425.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

265

Th~.cl:nes~' (feet)
Limestone: cream, massive (much calcitized), nodular, some-

what oolitic, fossiliferous (abundant Foraminifera)

10

Miliolidae abundant at 425-435.

Depth (feet)
435

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, dense (much calcitized), somewhat saccha-

roidal, fossiliferous (bryozoan remains and Foraminifera)__ 150

585

Asterocyclina nassauensis, Pseudophragmina flintensis, Gypsina globula at 435-445.

Summary:
No samples In Miocene (undifferentiated) Oligocene (undifferentiated) ________________________________________ Upper Eocene (Ocala limestone)

395

395

10

405

30

435

150

585

Limestone

Potential Water-Bearing Zones:

180

585

Location: 12 mi. north of Valdosta on Highway 125 Owner: U.S. Government (Moody Field) No. 2 Driller: U.S. Corps of Engineers Drilled: September 1941

LOWNDES COUNTY
Well No.: GGS 15 Elev.: 236

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, phosphatic (finely dissemi-

nated), kaolin inclusions _________________________________________

40

40

Clay: yellow, sandy, limonitic _

25

65

Limonite prominent at 55-60.

Sand: as above ______________________

--------------------

5

70

Miocene (Undifferentiated):

Clay: olive-green, sandy, somewhat limonitic, phosphatic,

sandier at depth ______________________________________________________________ _

15

85

Sand: fine to coarse-grained, phosphatic ____________ _

20

105

Clay: gray to turquoise-blue, somewhat indurated, tough, sandy, phosphatic, cherty; interbedded limestone, light-gray to white, very sandy, sparsely phosphatic; claystone, light-

266

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

gray, sandy, cherty, sparsely phosphatic

90

Claystone prominent at 130-135.

Limestone, light-gray to white, very sandy, sparsely phosphatic at 145-160.

Brown phosphatic pebbles abundant 185-190.

Clay: white, calcareous, very sandy, fossiliferous (bryozoan

remains and Foraminifera) ____________________________________

10

Elphidium? sp., Rotalia sp. at 195-200.

Dolomitic limestone: light-brown, dense, saccharoidal, sandy

23

Depth (feet)
195
205 228

Oligocene (Undifferentiated):

Limestone: light-gray, extremely dense (highly calcitized),

somewhat saccharoidal, fossiliferous (macroshells, bryo-

zoan remains, and Foraminifera)

147

375

Quinqueloculina sp. at 230-235. Dictyoconus1 sp. at 260-265.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, massive, somewhat calcitized, fossiliferous

(bryozoan remains, macroshells, and Foraminifera) _

50

425

Operculinoides floridensis, Operculinoides sp., Lepidocyclina sp. at 375-380. Gypsina globula at 395-400. Pseudophmgmina flintensis, Lepidocyclina sp. at 400-405.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) _ Oligocene (undifferentiated) ___ Upper Eocene (Ocala limestone)

70

70

158

228

147

375

50

425

Potential Water-Bearing Zones:
Sand: fine to coarse-grained Limestone __ ______________

20

105

197

425

1 Reworked ( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

267

Location: Barrett Owner : Fred Schroer Driller: Winter Hardware Company Drilled: November 1941

LOWNDES COUNTY Well No.: GGS 24

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated): Clay: red, sandy, limonitic, finely phosphatic Clay: ochre to yellow, sandy, abundantly limonitic _ Clay: dark-green, very sandy, finely phosphatic _

60

60

20

80

20

100

Miocene (Undifferentiated):

Clay: light-gray to white, indurated, very sandy, carbo-

naceous, cherty; interbedded limestone, white, sandy

100

200

Summary:

Pliocene to Recent (undifferentiated)

Miocene (undifferentiated) _

______________________ _

100

100

100

200

Potential Water-Bearing Zones: None observed to total depth (200).

Location: Valdosta Owner: No. 1 J. W. Holloway Driller: Winter Hardware Company Drilled: November 1941

LOWNDES COUNTY
Well No.: GGS 27 Elev.: 250

'fhickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Clay: mottled, sandy, limonitic

10

20

Clay: ochre, very sandy, limonitic ___

20

40

Sand: fine to medium-grained, argillaceous, inclusions of kaolin 20

60

Miocene (Undifferentiated):

Sand: fine to medium-grained, argillaceous; clay, gray, in-

durated, sandy, phosphatic, cherty; limestone, white, dense

(much calcitized), sandy, carbonaceous ___ ________________ ________________ 20

80

268

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Clay and limestone: as above ____

20

Limestone: white, sandy; and clay, gray, indurated, sandy _ 20

Clay: light-gray, indurated, sandy; and limestone, as above _____ 20

Clay: as above; and dolomitic limestone, light-brown, saccha-

roidal, sandy ___________ _

20

Clay: light-gray to pale-green, sandy; and dolomitic lime-

stone, as above

20

Depth (feet)
100 120 140
160
180

Oligocene (Undifferentiated):

Limestone: light-brown to light-gray, dense (highly calci-

tized), somewhat dolomitized ( ?) , fossiliferous (Foramini-

fera, macro-shells and bryozoan remains)

200

380

Miliolidae prominent at 200-220. Dictyoconus1 sp. at 220-240.

Upper Eocene(?): Jackson Group: Ocala Limestone:

Limestone: light-gray, dense (much calcitized), fossiliferous

(bryozoan remains and Foraminifera)

20

400

Operculinoides sp. at 380-400.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) ---------------------------------0 ligocene (undifferentiated) ______________ __________________ Upper Eocene (?) (Ocala limestone) ------------------------------

60

60

120

180

200

380

20

400

Limestone _____

Potential Water-Bearing Zones:

220

400

LOWNDES COUNTY

Location: 3 mi. west of Valdosta

Well No.: GGS 40

Owner: No. 1 Abligard

Driller: Winter Hardware Company

Drilled: April 1943

Thickness Depth

(feel)

(feet)

--------------------------------------

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, finely phosphatic, somewhat

indurated; clay, ochre, sandy

20

20

Clay: gray to greenish-gray, sandy __ .

20

40

'Reworked(?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

269

Miocene (Undifferentiated):

Thickness (feet)

Clay: gray to greenish-gray, sandy, phosphatic

20

Clay: as above, but much sandier ___

20

Claystone (indurated clay) : pale-green, phosphatic, sandy,

cherty ___ _

_________________________

20

Sand: fine to coarse-grained, somewhat silicified; and clay-

stone, as above _____ _______________

40

Limestone: white, rather soft, sandy _

60

Depth (feet)
60 80
100
140 200

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated)

40

40

160

200

Potential Water-Bearing Zones: Sand: fine to coarse-grained

40

140

Location: 8 mi. west of Valdosta Owner: No. 1 C. C. Giddens Driller: Winter Hardware Company Drilled: January 1943

LOWNDES COUNTY Well No.: GGS 42

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):
Clay: red to purple, sandy ____ Clay: ochre, very sandy, abundantly limonitic __

20

20

20

40

Miocene (Undifferentiated):

Clay: light-gray, somewhat indurated, sandy, phosphatic, cherty 40

80

Clay: as above; limestone, white, sandy

20

100

Limestone: white, sandy; clay, as above

40

140

Claystone: pale-green, cherty

20

160

Oligocene (Undifferentiated) :

Claystone: as above; limestone, light-brown to cream, rather

dense (calcitized), fossiliferous (Foraminifera) _____

60

220

Quinqueloculina sp., Dictyoconus1 sp. at 180-200.

'Reworked (?) fossil of middle Eocene age.

270

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:
Pliocene to Recent (undifferentiated) ____________ Miocene (undifferentiated) ______ Oligocene (undifferentiated) _______

Limestone

Potential Water-Bearing Zones:

Thickness Depth

(feet)

(feet)

40

40

120

160

no

220

30

220

Location: 8 mi. north of Valdosta Owner: No. 1 Walter Todd Driller: Winter Hardware Company

LOWNDES COUNTY Well No.: GGS 47

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated): Clay: light-gray to pink, very sandy, arkosic _

10

20

Miocene (Undifferentiated):

Clay: ochre, sandy, phosphatic

40

60

Sand: fine to medium-grained, angular, phosphatic

40

100

Clay: light-gray to pale-green, sandy, cherty; and limestone,

white, sandy, much leached ____________

20

120

Dolomitic limestone: light-brown, saccharoidal

100

220

Summary:
Pliocene to Recent (undifferentiated) __ Miocene (undifferentiated) ___

20

20

200

220

Potential Water-Bearing Zones :
Sand: fine to medium-grained Dolomitic limestone ___

40

100

100

220

Location: In Bemiss Owner: No. 1 T. M. Dasher Driller: Winter Hardware Company Drilled: 1941
Pliocene to Recent (Undifferentiated): Clay: pink, sandy, finely phosphatic ___ Clay: ochre, sandy, abundantly limonitic _________________

LOWNDES COUNTY
Well No.: GGS 78 Elev.: 251

Thickness Depth

(feet)

(feet)

40

40

20

60

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

271

Miocene (Undifferentiated):

Thickness (feet)

Clay: ochre to dark green, sandy, phosphatic ______________

20

Sand: medium-grained

20

Sand: fine-grained, phosphatic; limestone, white, sandy _____

40

Clay: light-gray to pale-green, sandy; limestone, as above________ 40

Depth (feet)
80 100 140 180

Oligocene (Undifferentiated):

Sand: fine to coarse-grained, phosphatic; limestone, gray to

cream, dense (much calcitized), sandy, fossiliferous at

depth (macroshells, echinoid spines, and Foraminifera) ________ 60

240

Quinqueloculina sp. at 200-240.

No samples __

20

260

Limestone: cream, soft, fossiliferous (Foraminifera)

18

278

Summary:

Pliocene to Recent (undifferentiated) ____________________________ __________________ 60

60

Miocene (undifferentiated) _________________ ------------------------------------------------ 120

180

Oligocene (undifferentiated) _________ ---------------------------------------------------- 98

278

Potential Water-Bearing Zones:

Sand: medium-grained

20

100

Limestone __________ --------------------------------------------------------------------------------------- 18

278

Location: Bemiss Owner: No. 1 Mount Zion School Drilled: 1941

LOWNDES COUNTY
Well No.: GGS 79 Elev.: 250

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Clay: ochre, sandy, abundantly limonitic

20

20

Clay: ochre, very sandy, finely phosphatic, argillaceous, con-

taining inclusions of kaolin ____________

20

40

Mioeene (Undifferentiated):

Clay: as above, but phosphatic _

10

50

Clay: light-gray to pale-green, very sandy, phosphatic ______________ 20

70

Sand: fine to medium-grained, somewhat argillaceous, phos-

phatic

10

80

272

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Clay: light-gray, very sandy, phosphatic; limestone, white,

sandy, much leached

_____________________________ --------- 10

Sand: fine to medium-grained; limestone, white, sandy, cherty__ 10

Limestone: dense (much calcitized), sandy _

20

Sand: fine to coarse-grained, angular, phosphatic; limestone,

as above ____ _

60

Depth (feet)
90 100 120
180

Oligocene (Undifferentiated):

Limestone: gray to light-brown, somewhat dolomitized and

saccharoidal; limestone, cream, dense (much calcitized),

nodular, fossiliferous (Foraminifera)

20

200

Quinqueloculina sp. at 180-200.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) ______ Oligocene (undifferentiated)

40

40

140

180

20

200

Potential Water-Bearing Zones:

Sand: fine to coarse-grained _______________

Limestone

_________________ _

30

150

20

200

Location: Valdosta Owner: City of Valdosta Drilled: 1947

LOWNDES COUNTY
Well No.: GGS 173 Elev.: 2301

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, carbonaceous, limonitic

2

2

Clay: ochre to red (mottled), sandy, abundantly limonitic

18

20

Clay: light-gray to pink (mottled), sandy; limestone, white,

dense (much calcitized), sandy __________________________

20

40

Clay: ochre, sandy, limonitic; limestone, as above ______

30

70

Clay and limestone: as above, containing inclusions of kaolin______ 20

90

1Average elevation based on Georgia State Highway Maps.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

273

Miocene (Undifferentiated):

Thickness (feet)

Clay and limestone: as above; clay, pale-green, sandy, phosphatic 40

Limestone: white, sandy, cherty ____

20

Limestone: as above; interbedded clay, dark-green to tur-

quoise-blue, indurated _________ _______________

40

Dolomitic limestone: light-brown, saccharoidal, sandy

5

Depth (feet)
130 150
190 195

Oligocene (Undifferentiated):

Dolomitic limestone: as above; and limestone, light-gray, very

dense (highly calcitized), cherty, nodular, fossiliferous at

depth ___ ____

__________________________

______________________

175

370

Quinqueloculina sp., Dictyoconus2 sp. at 205-235.

Upper Eocene: Jackson Group: Ocala Limestone:

-Limestone: white to cream, much calcitized, massive, fossili-

ferous (bryozoan remains and Foraminifera); interbedded

dolomitic limestone ___

________ ____________ _ 390

760

Gypsina globula, Operculinoides sp. at 370-390. Dolomitic limestone at 450-530 and 550-570. Amphistegina pinarensis var. at 590-610.

Gypsiferous crystals common at 650-670.

Dolomitic limestone at 670-710.

Middle Eocene: Claiborne Group (Undifferentiated):

Limestone: light-gray, extremely dense (highly calcitized),

massive, somewhat nodular, fossiliferous (bryozoan re-

mains and Foraminifera) ; interbedded dolomitic limestone,

dark-brown, saccharoidal

58

818

Miliolidae prominent at 760-770. Asterocyclina sp. at 800-810.

Summary:

Pliocene to Recent (undifferentiated) _____________

90

90

Miocene (undifferentiated) _____ ___________ Oligocene (undifferentiated) ___ _______ _____ __ ___________ ____________

105

195

175

370

Upper Eocene (Ocala limestone) _______________ __________________________ _______________ 390

760

Middle Eocene (Claiborne group, undifferentiated) ___ ________________

58

818

Potential Water-Bearing Zones:

-Limestone _________________ ------------------------------------ -------------------------------------
1Reworked ( ?) fossil of middle Eocene age.

300

450

274

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 4 mi. south of Lake Park Owner: No. 1 U.S. Bureau of Fisheries Driller: W. R. McGrew Drilled : 1929

LOWNDES COUNTY
Well No.: GGS 179 Elev.: 145

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, arkosic ____________ -------------------------------- 18

18

Sand: fine to medium-grained, finely phosphatic, argillaceous

at depth _____________ _______________

----------------------------------

42

60

Miocene(?) (Undifferentiated): Clay: light-gray, indurated, sandy, cherty _ No samples

15

75

20

95

In Oligocene (Undifferentiated):

Limestone: light-gray, dense (highly calcitized), nodular, fos-

siliferous (Foraminifera) _______________________________________________

113

208

Quinqueloculina sp. at 95-110.

Dictyoconus1 sp. common at 200-208.

Summary:

Pliocene to Recent (undifferentiated)

Miocene ( ?) (undifferentiated) __

No samples ________

______________ _

In Oligocene (undifferentiated) __ _

60

60

15

75

20

95

113

208

Limestone

Potential Water-Bearing Zones:

113

208

LOWNDES COUNTY

Location: 3 mi. southeast of Base (Moody Field), at Ordnance Site
Owner: No. 3 Moody Air Field (U.S. Govt.) Driller: Winter Hardware Company

Well No.: GGS 182 Elev.: 202

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Clay: mottled, sandy, arkosic, limonitic ------------------------------------------ 15

15

1Reworked ( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

275

Thickness (feet)
Clay: ochre, abundantly limonitic, sandy, sandier with increased depth _ _ ___________________________________________________________________ 15

Sand: fine to coarse-grained, finer-grained at depth, angular,

arkosic, finely phosphatic _ __________________________________

15

Depth (feet)
30
45

Miocene (Undifferentiated):

Sand: as above, but phosphatic __

10

55

Clay: ochre to dark-green, indurated, sandy, phosphatic _

10

65

Sand: fine-grained, phosphatic; limestone, white, sandy,

much leached _

__________ _______ ________ ___ ____ _______________ ___________________ 10

75

Clay: gray to light-brown, sandy, phosphatic

10

85

Sand: fine-grained; limestone, as above _

10

95

Clay: light-gray, indurated, sandy, cherty at depth; inter-

bedded limestone, white, sandy; and sand, fine to medium-

grained, phosphatic

_____ __ _

55

150

Dolomitic limestone: light-brown, saccharoidal, sandy; sand,

as above _ __

_______ _______ __________________________

5

155

Clay: white, very sandy, cherty; dolomitic limestone, as above

5

160

Limestone: white, very sandy, cherty, fossiliferous (macro-

shells and Foraminifera)

15

175

Sorites sp. at 165-170.

Oligocene (Undifferentiated):

Dolomitic limestone: light-brown, saccharoidal; interbedded

limestone, dense (highly calcitized), fossiliferous (Fora-

minifera) ____

________________

_______ _ ______ 25

200

Rotalia byramensis var. at 190-195.

Limestone: cream, dense (highly calcitized), fossiliferous

(Foraminifera)

__________________ _

48

248

Dictyoconus1 sp. at 200-205.

Summary:

Pliocene to Recent (undifferentiated) _ _______________ ------------------

45

45

Miocene (undifferentiated) ------------------------------------------------------------------- 130

175

Oligocene (undifferentiated)

----------------------------------------------------- 73

248

Potential Water-Bearing Zones:
-Limestone
'Reworked ( ?) fossil of middle Eocene age.

88

248

276

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Valdosta Owner: No. 1 City of Valdosta Driller: Layne-Atlantic Company Drilled: 1949

LOWNDES COUNTY Well No.: GGS 198

Thickness Depth

(feet)

(feet)

No samples

176

176

fn Miocene (Undifferentiated):

Limestone: white, sandy; clay, pale-green, indurated, sandy,

cherty ___________________________ -------------------------------------------------- ___________________ 16

192

Dolomitic limestone: light-brown, dense, saccharoidal, sandy______ 15

207

Oligocene (Undifferentiated):

Limestone: cream, very dense (highly calcitized) fossilifer-

ous (bryozoan remains, macroshells, and Foraminifera)

154

361

Rotalia byramensis var. at 207-212. Dictyoconus 1 sp. at 212-217. Gypsina globulat, Lepidocyclina1 sp., Ope?culinoides1 sp. at 327-332.

No samples _______________________
In Miocene (undifferentiated) Oligocene (undifferentiated) __ _

Summary:

176

176

31

207

154

361

Limestone

Potential Water-Bearing Zones:

154

361

Location: 7 mi. southeast of Valdosta Owner: No. 2 National Container Company Driller: Layne-Atlantic Company Drilled: 1954

LOWNDES COUNTY Well No.: GGS 356

ThicKness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, limonitic, arkosic; clay, mot-

tled, sandy

____________________ _

10

10

Clay: light-gray to purple, very sandy, limonitic __

10

20

1 Reworked ( ? ) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

277

Thickness (feet)

Sand: fine to coarse-grained, limonitic, arkosic; clay, ochre,

sandy __ ________ _____________ ____________________________

___ __________ 13

Depth (feet)
33

Clay: ochre, very sandy, abundantly limonitic

3

36

Sand: fine to medium-grained, angular, argillaceous, contain-

ing inclusions of kaolin ___ _

14

50

Sand: coarse-grained, arkosic

5

55

Miocene (Undifferentiated):

Clay: pale-green to turquoise to ochre, sandy, phosphatic

25

80

Phosphatic pebbles prominent at 55-70.

Sand: fine to coarse-grained, phosphatic

20

100

Clay: light-gray to white, sandy, indurated (approaching a

claystone), cherty at depth

40

140

Dolomitic limestone: light-brown, saccharoidal, sandy; and

limestone, white, sandy

10

150

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) ___

55

55

95

150

Potential Water-Bearing Zones:
Sand: fine to coarse-grained _._ Dolomitic limestone

20

100

10

150

Location: 7 mi. southeast of Valdosta Owner: No. 1 National Container Company Driller: Layne-Atlantic Company Drilled: 1954

LOWNDES COUNTY Well No.: GGS 404

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Clay: pale-green to ochre to red (mottled), very sandy, limo-

nitic

21

21

Clay: ochre, sandy _

6

27

Sand: fine to medium-grained, argillaceous, angular

25

52

278

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Miocene (Undifferentiated):

Thickness (feet)

Clay: dark-green to brown (somewhat mottled), cherty, sandy__ 8

Depth (feet)
60

Sand: fine-grained, phosphatic; clay, light-gray, somewhat

indurated, sandy _

--------------------------

5

65

Clay: light-gray, somewhat indurated, phosphatic, sandy

13

78

Sand: fine to medium-grained, phosphatic, argillaceous at depth 22

100

Clay: light-gray, sandy; indurated clay, white, sandy, carbo-

naceous; interbedded limestone at depth, white, sandy___

33

133

Clay: pale-green to turquoise, somewhat indurated, sandy,

cherty __ --------------------------------------------------------------------------------------- _

17

150

Clay: as above; dolomitic limestone, light-brown, saccha-

roidal, sandy

____________________

10

160

Clay; white, indurated, sandy, carbonaceous; limestone, white,

sandy, fossiliferous (Foraminifera)

20

180

Archaias sp. at 160-165.

Oligocene (Undifferentiated):

Limestone: dense (highly calcitized), nodular, fossiliferous

(macroshells and some Foraminifera) __________

136

316

Dictyoconus1 sp., Rotalia byramensis var. at 180-190.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) __ Oligocene (undifferentiated) ___ _

52

52

128

180

136

316

Potential Water-Bearing Zones:

Sand: fine to medium-grained _____ _________________

Limestone

_ _ __ ___________

22

100

136

316

Location: 4 mi. north of Post Office in Valdosta Owner: No.1 Schroer Plant Farm Driller: Duval Drilling Company

LOWNDES COUNTY
Well No.: GGS 412 Elev.: 250

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, gray to yellow, argillaceous,

limonitic

5

5

1Reworked ( '?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

279

Thickness (feet)

Clay: light-gray to purple (mottled), sandy, finely dissemi-

nated phosphatic grains and kaolin inclusions _____

65

Depth (feet)
70

Miocene (Undifferentiated):

Clay: yellow, olive-green at depth, sandy, phosphatic (light-

gray pebbles); some sand, fine-grained

48

118

Claystone: white, sa_ndy, abundant chert __

5

123

Clay: pale-green, sandy, phosphatic; limestone, white, dense

(much calcitized), sandy, somewhat carbonaceous ___ ______

27

150

Clay: turquoise, indurated, tough, sandy, light-gray to trans-

parent phosphatic? pebbles________

_______________________ 37

187

Clay: turquoise, indurated, sandy; limestone, white to light-

brown (dolomitized) at depth, very sandy, fossiliferous at

depth (macroshells and bryozoan remains)

49

236

Macroshells at 200-207.

Dolomitic limestone at 207-226.

Oligocene (Undifferentiated):

Limestone: light-brown to cream at depth, fossiliferous at depth 127

363

Quinqueloculina sp. at 236-246.

Rotalia bryamensis var. at 246-266.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, dense (much calcitized,) fossiliferous

(macroshells and some Foraminifera); interbedded dolo-

mitic limestone in certain zones

137

500

Dolomitic limestone, dark-brown, saccharoidal at 363-370.

Operculinoides sp. at 370-385. Pseudophragmina flintensis, Gypsina globula at 400-420. Camerina striatoreticulata (abundant), Asterocyclina nassauensis at 440-459.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) __ _ Oligocene (undifferentiated) Upper Eocene (Ocala limestone)

Limestone

Potential Water-Bearing Zones:

70

70

166

236

127

363

137

500

210

460

280

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: In Valdosta Owner: No. 1 City of Valdosta Driller: M. M. Gray Drilling Company Drilled: 1955

LOWNDES COUNTY
Well No.: GGS 500 Elev.: 250

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, coarser-grained at depth, arko-

sic, limonitic, finely disseminated phosphate grains, inclu-

sions of kaolin; interbedded clay, yellow to olive-green to

purple (mottled), sandy, limonitic ___

_ _________ _

50

50

Miocene (Undifferentiated):

Clay: pale-green to turquoise, light-gray to white at depth,

somewhat indurated at depth, sandy, cherty, carbonaceous,

phosphatic (light-gray to brown pebbles) ; interbedded

limestone, white, sandy, carbonaceous _

120

170

Light-gray to brown phosphatic pebbles prominent at 50-60. 50-60.

Dolomitic limestone, light-brown, saccharoidal, sandy____

10

180

Oligocene (Undifferentiated):

Limestone: light-gray, dense (much calcitized), nodular, fos-

siliferous (Foraminifera)

195

375

Rotalia sp. at 190-200. Quinqueloculina sp., Dictyoconus1 sp. at 230-240.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, fossiliferous (bryozoan remains and

some Foraminifera)

___________________________ _ 25

400

Operculinoides sp. at 370-380. Operculinoides sp. common, Lepidocyclina sp. at 390-400.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) Oligocene (undifferentiated) ___ Upper Eocene (Ocala limestone)

50

50

130

180

195

375

25

400

Limestone

Potential Water-Bearing Zones:

1 Reworked ( ? ) fossil of middle Eocene age_

220

400

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

281

Location: In Valdosta Owner: No. 1 City of Valdosta Driller: M. M. Gray Drilling Company Drilled: 1955

LOWNDES COUNTY Well No.: GGS 511

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Clay: light-gray to yellow to purple (mottled), sandy, limo-

nitic; interbedded sand, fine to medium-grained, phosphatic

(finely disseminated grains), inclusions of kaolin

70

70

Miocene (Undifferentiated):

Clay: white to light-gray, green to turquoise at depth, some-

what indurated, sandy, carbonaceous, phosphatic; inter-

bedded limestone, white, dense (much calcitized), sandy,

phosphatic ____________ ____________________________

__________________________ 120

190

Light-gray to brown phosphatic pebbles prominent at 80-90.

Dolomitic limestone: light-brown, dense, saccharoidal _______________ 20

210

No samples

10

220

In Oligocene (Undifferentiated):

Limestone: light-gray, dense (much calcitized), saccharoidal,

cherty ________________________ _______________

________________

100

320

Quinqueloculina sp. at 230-240. Dictyoconus1 sp. at 240-250.

Dolomitic limestone: brown, saccharoidal

30

350

Limestone: as in interval 220-320____

25

375

Upper Eocene: Jackson Group: Ocala Limestone: Limestone: white to cream, fossiliferous (Foraminifera) Operculinoides sp. at 370-380. Gypsina globula at 380-390.

25

400

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) ________ No samples ______________ In Oligocene (undifferentiated) ___
-Upper Eocene (Ocala limestone)
'Reworked ( ? ) fossil of middle Eocene age.

70

70

140

210

10

220

155

375

25

400

282 Limestone

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Potential Water-Bearing Zones:

Thickness Depth

(feet)

(feet)

180

400

MciNTOSH COUNTY

Location: West side of Blackbeard Island, 3.25 mi. south Well No.: GGS 84

of north end of island, near boat landing

Elev.: 9

Owner: No.4 U.S. Biological Survey (U.S. Govt.)

Driller: J. R. Neikirk

Drilled: March 1935

Thickness Depth

(feet)

(feet)

No samples

355

355

In Miocene (Undifferentiated):

Sand: fine to coarse-grained, phosphatic; limestone, yellow,

very dense, (much calcitized), sandy, fossiliferous (echi-

noid and bryozoan remains)

45

400

Oligocene (Undifferentiated):

Limestone: cream, granular (poorly cemented), fossiliferous

(Foraminifera) ____________

___________ ______ -- -------------- 105

505

Rotalia beccarii var., Elphidium sp., Discorbis s~tbaraucana, Textularia adalta, Asterigerina sp., Cibicides americanus, Discorbis assulata at 400-424.
Textularia tumidula, Rotalia by1'amensis var., Nonion alabamensis, Nonionella hantkeni var., Reussella oligocenica 445-455.
Spi1'oplectammina mississippiensis var. alabamensis, Reussella by1'amensis, Baggina xenoula, Rotalia mexicana var. at 486-505.

Limestone: cream to reddish-brown, rather massive (much

calcitized), nodular, fossiliferous (bryozoan remains, mega-

fossils, and 'Foraminifera) ______________________ .

__________ ----- 40

545

Siphonina advena, Dictyoconus1 sp., Reussella by1'amensis, Reussella oligocenica, Rotalia mexicana var., Disco1'bis sp., Quinqueloculina sp., Gypsina globula1 at 505-565.

'Reworked(?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

283

Upper Eocene: Jackson Group: Ocala Limestone:

Thickness (feet)

Limestone: light-gray, crystalline (much calcitized), fossiliferous (abundant bryozoan remains and some Foraminifera) 70

Operculinoides sp. at 545-555.
Operculinoides floridensis at 555-570. Asterocyclina nassauensis, Gypsina globula, Argyrotheca sp. at 580-615.
Gypsina globula, Asterocyclina nassauensis, Lingulina sp., Baggina xenoula, Eponides jacksonensis, Nonion planatus, Argyrotheca sp. at 615-645.

Limestone: white, densely crystalline (highly calcitized), fossiliferous (abundant bryozoan remains and Foraminifera) _ __ 96

Depth (feet)
615
711

Summary:

No samples_

______________ _

In Miocene (undifferentiated)

Oligocene (undifferentiated) ________

Upper Eocene (Ocala limestone) ______

355

355

45

400

145

545

166

711

Limestone

Potential Water-Bearing Zones:

166

711

Location: Northeastern part of Harris Neck, 1,760 ft. south of Newport River
Owner: No. 1 Harris Neck Airport (U.S. Govt.) Driller: Stevens Southern _Drilled: July 1942

MciNTOSH COUNTY
Well No.: GGS 88 Elev.: 16

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, angular, arkosic

78

78

Sand: fine-grained, finely disseminated phosphatic grains;

and clay, dark-gray, carbonaceous, micaceous

_____ _____________ 122

200

In Miocene (Undifferentiated):

Clay: dark-green, abundantly phosphatic, cherty, sandy,

sandier with depth

_____ _______ __ _ _______ _

135

335

Sand: medium to coarse-grained, phosphatic, fossiliferous

(echinoid and bryozoan remains, and macroshells)

35

370

284

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Limestone: white, dense (much calcitized), very sandy,

coarsely phosphatic; sand, as above __ _

5

No samples

75

Depth (feet)
375 450

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, crystalline (much calcitized), fossil-

iferous (abundant bryozoan remains and some Foramini-

fera); soft limestone, cream, somewhat nodular in texture

115

565

Summary:
Pliocene to Recent (undifferentiated) __ _ In Miocene (undifferentiated) _________ No samples ____________________ In upper Eocene (Ocala limestone) __

200

200

175

375

75

450

115

565

Potential Water-Bearing Zones:
Sand: medium to coarse-grained ______________ Limestone ______________________ -----------------------------

35

370

115

565

MciNTOSH COUNTY

Location: 5 mi. northwest of Darien Owner: No. 1 Charles Fountain Driller: Woodrow Sapp Drilling Company Drilled: 1959

Well No.: GGS 596 Elev.: 15

Thickness (feet)
---------------------

Depth (feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, subangular to subrounded, some-

what phosphatic, micaceous; interbedded clay, brownish-

green to greenish-gray, sandy, micaceous___

_____________ 265

265

Miocene (Undifferentiated):

Clay: dark-olive-green, somewhat blocky, tough, phosphatic at

depth, cherty at certain levels _

75

340

Sand: fine to medium-grained, subangular to subrounded,

phosphatic __ ___

__ ______________

____________ --- -- -------------

50

390

Clay: dark-greenish-gray, sandy, phosphatic

50

440

Limestone: cream to light-brown, rather dense, calcitized,

sandy, phosphatic

______________ _

10

450

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

285

Thickness

(feet)

Sand: fine to medium-grained, subangular, phosphatic; inter-

bedded clay and limestone, as above______________________________________

40

Limestone: cream, sandy, phosphatic, fossiliferous (fragments and impressions of megafossils) __________________________________________________ 20

Sand: fine to coarse-grained, subangular to subrounded _______________ 80

Depth (feet)
490
510 590

Oligocene (Undifferentiated):

Limestone: cream, nodular, somewhat granular, fossiliferous

(bryozoan remains and Foraminifera)_______________________________ ______ 40

6:l0

Rotalia mexicana var. at 590-600.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, much calcitized, crystalline, fossiliferous

(abundant macroshells, bryozoan remains, and some Fora-

minifera) __________ ________________ ________________________

_________________ 150

780

Lepidocyclina sp. at 630-640. Opercnlinoides sp. at 640-650. Pseudophragmina flintensis, Asterocyclina sp. at 720-730.

Summary:

Pliocene to Recent (undifferentiated) __

265

265

Miocene (undifferentiated) _______________________________________________________________ 325

590

Oligocene (undifferentiated) ________________

40

630

Upper Eocene (Ocala limestone)

150

780

Potential Water-Bearing Zones:
Sand: fine to coarse-grained Sand: fine to medium-grained __ Sand: fine to coarse-grained _ Limestone ____________________________________________

45

120

50

390

80

590

150

780

Location: 40' west of Highway 90, north side of Beaver Creek, in Montezuma
Owner: No. 1 City of Montezuma Driller: Layne-Atlantic Company Drilled: 1938
Lower Eocene: Wilcox Group (Undifferentiated): Sand: medium to coarse-grained, limonitic ________________

MACON COUNTY
Well No.: GGS 60 Elev.: 280

Thickness Depth

(feet)

(feet)

65

65

Paleocene: Midway Group: Clayton Formation:

Sand: as above; and clay, brown, lignitic____________________________________ 20

85

286

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Cretaceous: Providence Sand:

Thickness (feet)

Sand: fine to coarse-grained, limonitic, pyritiferous, lignitic,

containing fragments of fossil wood___

_______________ _

57

Limestone: gray, dense, sandy, crystalline (in texture), fossil-

iferous (macroshells) ; indurated sand at depth

64

Inoceramus prisms prominent at 180-206.

Depth (feet)
142 206

Ripley and Cusseta (Undifferentiated):

Clay: light- to dark-bluish-gray, micaceous, sandy, pyritifer-

ous, fossiliferous (Foraminifera) ___

62

268

No samples_

22

290

Sand: fine to coarse-grained; limestone, gray, dense, sandy;

and clay, as above__

___________ _

112

402

Blufftown Formation:

Sand: fine to coarse-grained; and clay, brown, fissile, highly

micaceous, lignitic _ ________________________ ------------------------------------------------- 13

415

Sand: fine to coarse-grained; interbedded clay, brown, fissile,

splintery, highly micaceous, lignitic

______ __________

121

536

Summary:

Lower Eocene (Wilcox group, undifferentiated)_______________________________ 65

65

Paleocene (Clayton formation)__________

_____________ -------------------------- 20

85

Upper Cretaceous (Providence sand)_______________

------------------------ 121

206

Upper Cretaceous (Ripley and Cusseta, undifferentiated)______

196

402

Upper Cretaceous (Blufftown formation)

134

536

Potential Water-Bearing Zones:
Sand: fine to coarse-grained _ Sand: fine to coarse-grained Sand: fine to coarse-grained _ Sand: fine to coarse-grained

57

142

26

206

33

445

30

536

Remarks:
Well contains numerous sample gaps, hence complete resume of potential waterbearing sands cannot be picked.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

287

Location: At old Water Works Plant, approximately 200 yards southeast of southeast corner of R.R. Station in Montezuma
Owner: No. 2 City of Montezuma Driller: Layne-Atlantic Company Drilled: April 1947

MACON COUNTY
Well No.: GGS 145 Elev.: 277

Thickness Depth

(feet)

(feet)

Lower Eocene: Wilcox Group (Undifferentiated):

Sand: fine to coarse-grained; interbedded clay, light-gray,

fossiliferous at certain horizons_______

______________

66

66

Paleocene: Midway Group: Clayton Formation:

Clay: chocolate, blocky, lignitic; sand, fine to medium-grained

15

81

Upper Cretaceous: Providence Sand:

Sand: fine to coarse-grained; interbedded clay (or kaolin),

white to gray to dark-gray, micaceous, sandy____

109

190

Ripley and Cusseta (Undifferentiated):

Clay: gray, micaceous, silty, fossiliferous (Foraminifera) ___

78

268

Anomalina pseudopapillosa, Cibicides harperi at 190-268.

Limestone: gray, dense, crystalline (in texture), sandy, fos-

siliferous; indurated sand at depth___________________________________________ 31

299

Clay: gray, micaceous, sandy_________________

97

396

Sand: fine to coarse-grained _

49

445

In Blufftown Formation:

Sand: fine to coarse-grained; interbedded clay, dark-brown,

fissile, somewhat splintery, highly micaceous, lignitic_____ __

82

527

Clay: dark-brown, fissile, splintery, highly micaceous, lignitic,

sandy; sand, fine to coarse-grained_______

____ ___________ 91

618

Summary:

Lower Eocene (Wilcox group, undifferentiated) ____

66

66

Paleocene (Clayton formation) ____________________________________

15

81

Upper Cretaceous (Providence sand)__ ---------------------------------------------- 109

190

Upper Cretaceous (Ripley and Cusseta, undifferentiated) ________ _ 255

445

Upper Cretaceous (in Blufftown formation)__ ______________________

173

618

288

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Potential Water-Bearing Zones:
Sand: fine to coarse-grained__ Sand: fine to coarse-grained ________________ Sand : fine to coarse-grained_________ Sand: fine to coarse-grained_________

Thickness Depth

(feet)

(feet)

39

120

21

299

49

445

20

527

Location: In Marshallville Owner: No. 3 City of Marshallville Driller: Layne-Atlantic Company Drilled: August 1951

MACON COUNTY
Well No.: GGS 229 Elev.: 493
(derrick floor)

Thickness Depth

(feet)

(feet)

Lower Eocene: Wilcox Group (Undifferentiated):

Sand: fine to medium-grained, limonitic; clay, mottled, sandy

22

22

Sand: fine to coarse-grained; clay (or kaolin), white, mica-

ceous, somewhat sandy

__________________________ _

36

58

Paleocene: Midway Group: Clayton Formation:

Clay: gray to tan, hackly; some sand, coarse-grained, limonitic__ 20

78

Upper Cretaceous: Providence Sand:

Sand: fine to coarse-grained, limonitic; clay (or kaolin) , gray,

micaceous, somewhat sandy

____________________________ _

19

97

Clay (or kaolin) : white to gray to purple (mottled), mica-

ceous, somewhat sandy _____________

15

112

Sand: fine to coarse-grained, limonitic; clay (or kaolin), as

above ___________________

53

165

Ripley and Cusseta (Undifferentiated):

Clay: dark-gray, sandy, micaceous, carbonaceous_

24

189

Sand : coarse-grained _

14

203

Clay: dark-gray, sandy, micaceous ______________

60

263

Sand : fine to coarse-grained

17

280

Sand: fine to coarse-grained; interbedded clay (or kaolin),

white to gray to red (mottled), micaceous, somewhat sandy__ 136

416

Sand: fine to coarse-grained _

60

476

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

289

Blufftown and Eutaw (Undifferentiated):

Thickness (feet)

Sand: fine to coarse-grained; interbedded clay, brown, mica-

ceous, lignitic

------------------------- ------------------------ 69

Depth (feet)
545

Tuscaloosa Formation:

Sand: fine to coarse-grained, arkosic; interbedded clay (or

kaolin), white to gray to red (mottled), micaceous, some-

what sandy

101

646

Summary:

Lower Eocene (Wilcox group, undifferentiated)_

58

58

Paleocene (Clayton formation)

------------------------- 20

78

Upper Cretaceous (Providence sand) ____ --------------------------------------------- 87

165

Upper Cretaceous (Ripley and Cusseta, undifferentiated)________________ 311

476

Upper Cretaceous (Blufftown and Eutaw, undifferentiated)_____

69

545

Upper Cretaceous (Tuscaloosa formation)__

101

646

Potential Water-Bearing Zones:
Sand: fine to coarse-grained__ Sand: fine to coarse-grained__ _ Sand: coarse-grained ______________ _ Sand: fine to coarse-grained___ Sand: fine to coarse-grained_ Sand: fine to coarse-grained _

10

88

22

165

14

203

17

280

86

476

42

632

Location: Few hundred feet east of City Water Works in Montezuma
Owner: No.3 City of Montezuma Driller: Layne-Atlantic Company Drilled: January 1954

MACON COUNTY
Well No.: GGS 408 Elev.: 293

Thickness Depth

(feet)

(feet)

Lower Eocene: Wilcox Group (Undifferentiated): Sand: fine to coarse-grained, yellow, argillaceous

7

7

Paleocene: Midway Group: Clayton Formation:

Clay: gray, somewhat indurated, lignitic, finely micaceous

9

16

Limestone: gray, dense, crystalline (much calcitized), sandy,

fossiliferous (macroshells)

________________ --------------------------- 18

34

Sand: fine to coarse-grained, angular

14

48

290

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Cretaceous: Providence Sand:

Thickness Depth

(feet)

(feet)

Clay: bluish-gray to black, silty, carbonaceous, micaceous,

pyritiferous

---------------------------------------------------- ___ ______ ________________ 8

56

Sand: fine to coarse-grained, angular, arkosic, pyritiferous;

interbedded clay, bluish-gray, sandy, micaceous, glauconitic,

pyritiferous ___

__ ___ ___

137

193

Sand: fine to coarse-grained; limestone, gray, dense, crystal-

line, very sandy, fossiliferous (macroshells)_

23

216

Ripley Formation:

Marl: gray, somewhat chalky, sandy, micaceous, glauconitic,

pyritiferous, fossiliferous (macroshells and Foraminifera)

60

276

Anomaltna pseudopapillosa at 216-243.

Limestone: gray, dense, very sandy, micaceous, glauconitic,

fossiliferous (macroshells) ; indurated sand at depth_

4

280

Clay: gray, sandy, micaceous, glauconitic, pyritiferous _

58

338

Sand: fine to medium-grained _

10

348

Cusseta Sand:

Sand: fine to coarse-grained, angular, arkosic; interbedded

clay (or kaolin), gray, somewhat sandy, micaceous_

55

403

Blufftown Formation:

Sand: fine to coarse-grained, arkosic; interbedded clay, dark-

brown, fissile, splintery, highly micaceous, lignitic, pyriti-

ferous

_______________________________________________________ _ 111

504

Summary:
Lower Eocene (Wilcox group, undifferentiated) _ Paleocene (Clayton formation) Upper Cretaceous (Providence sand)_ Upper Cretaceous (Ripley formation) Upper Cretaceous (Cusseta sand) ______________ Upper Cretaceous (Blufftown formation) ____________________________ _

7

7

41

48

168

216

132

348

55

403

111

504

Potential Water-Bearing Zones:
Sand: fine to coarse-grained ___ _ Sand: fine to coarse-grained________________________________ Sand: fine to medium-grained _____________________ Sand: fine to coarse-grained_____________________ Sand: fine to coarse-grained_ Sand: fine to coarse-grained__

36

92

28

128

10

348

51

403

18

450

10

470

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

291

Location: 8-10 miles north of Montezuma owner: No. 1 Norris Cattle Company Driller: Layne-Atlantic Company Drilled: 1954

MACON COUNTY Well No.: GGS 422

Thickness Depth

(feet)

(feet)

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: brick-red, sandy, limonitic__

16

16

Sand: fine to coarse-grained, angular, somewhat phosphatic,

limonitic

______________ _

58

74

Paleocene: Midway Group: Clayton Formation:

Clay: black, fissile, carbonaceous, sparsely glauconitic__

10

84

Sand: fine to coarse-grained, angular, limonitic, pyritiferous,

sideritic

____ ___________________ ______ _

______________ 10

94

Clay: light-gray; limestone, gray, dense, crystalline (much

calcitized), sandy, fossiliferous (macroshells and some

Foraminifera); sand, as above _________________

21

115

Cibicides newmanae, Eponides lotus at 94-105.

Upper Cretaceous: Providence Sand:

Clay: black, micaceous, lignitic; sand, fine to coarse-grained,

arkosic, pyritiferous, sideritic_____________________________

11

126

Sand: fine to coarse-grained, angular, arkosic, limonitic; in-

terbedded clay, dark-gray, silty, micaceous, pyritiferous_____ 51

177

Ripley Formation:

Clay: dark-gray, sandy, micaceous, pyritiferous, sideritic,

fossiliferous at certain horizons (macroshells); interbedded

sand, fine to coarse-grained, limonitic__

215

392

Siderite abundant at 228-249.

Macroshells present at 249-260.

Summary:
Lower Eocene (Wilcox, undifferentiated)_ Paleocene (Clayton formation) ___________ _ Upper Cretaceous (Providence sand) _____ _________________________ Upper Cretaceous (Ripley formation)

74

74

41

115

62

177

215

392

Potential Water-Bearing Zones:
Sand: fine to coarse-grained__ _ Sand: fine to coarse-grained _

51

177

61

392

292

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 4.35 mi. south of junction of Highways 41 and 26 in Buena Vista, east side of Highway 41, west of side of small dairy barn
Owner: No.1 M. B. Wells, Jr. Driller: Southeastern Drilling Company Drilled: November 1952

MARION COUNTY
Well No.: GGS 329 Elev.: 657

No samples. In Paleocene: Midway Group: Clayton Formation:
Clay: black, fissile.

20

20

8

28

Upper Cretaceous: Providence Sand:

Sand: fine to coarse-grained, arkosic, angular

6

34

Kaolin: white to light-gray to pink (mottled), very sandy,

micaceous; interbedded sand, fine to medium-grained, angular 46

80

Sand: fine to coarse-grained; clay, as above (latter "cave"

from above) ____

60

140

Ripley Formation:

Marl: mottled, bluish-gray at depth, micaceous, silty, sider-

itic, glauconitic, fossiliferous (Foraminifera)

182

322

Cibicides harperi at 200-220. Gaud1yina rudita, Cibicides harp'eri at 240-260.

Summary:

No samples _ _______________

_____________ _

In Paleocene (Clayton formation) ______

Upper Cretaceous (Providence sand) ________

Upper Cretaceous (Ripley formation)

--- ------ 20

20

----------------------------- 8

28

------------------ 112

140

--- 182

322

Potential Water-Bearing Zones: Sand: fine to coarse-grained______ ----------------------------- ___________________ _

60

140

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

293

Location: At Water Works, in Buena Vista owner: No. 2 City of Buena Vista Driller: Layne-Atlantic Company Drilled: August 1948

MARION COUNTY
Well No.: GGS 347 Elev.: 633

Thickness Depth

(feet)

(feet)

Upper Cretaceous: Providence Sand: Sand: fine to coarse-grained, angular, limonitic

34

34

Ripley and Cusseta (Undifferentiated):

Marl: bluish-gray, sandy, micaceous ____

40

74

MarI: as above; limestone, gray, dense, crystalline, very

sandy, fossiliferous (macroshells)_

54

128

Marl: bluish-gray, silty, micaceous, sideritic, fossiliferous

(Ostracods and Foraminifera).

67

195

Cibicides harperi, Anomalina clementiana, Loxostoma plaitum, Gaudryina rudita at 128-145.

Sand: fine to coarse-grained, angular, arkosic; interbedded

clay (or kaolin), gray to red (mottled), micaceous

115

310

Summary:

Upper Cretaceous (Providence sand) ________________

34

34

Upper Cretaceous (Ripley and Cusseta, undifferentiated) ______

276

310

Potential Water-Bearing Zones: Sand: fine to coarse-grained

115

310

Location: In Buena Vista Owner: No. 3 City of Buena Vista Driller: Southeastern Drilling Company Drilled: July 1954

MARION COUNTY
Well No.: GGS 388 Elev.: 640

(feet)

(feet)

Thickness Depth

Upper Cretaceous: Providence Sand:

Sand: fine to coarse-grained, angular, arkosic, limonitic,

contains inclusions of kaolin __ __________________________________________________ 35

35

294

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Ripley and Cusseta (Undifferentiated):

Thickness
(feet)

Marl: gray to red (mottled), micaceous, sandy__

5

Marl: bluish-gray, micaceous, sandy, sideritic, fossiliferous

(Foraminifera)

___________________ _

48

Sideritic nodules prominent at 50-80.

Haplophragmoides sp., Gaudryina rudita, Anomalina clementiana, Loxostoma plaitum at 70-80.

Limestone: gray, dense, crystalline, very sandy__

12

Marl: bluish-gray, micaceous, sandy ______ _

90

Sand: coarse-grained, angular, limonitic _

85

Marl: as above____

17

Depth
(feet)
40 88
100 190 275 292

Summary:
Upper Cretaceous (Providence sand) ___ _ Upper Cretaceous (Ripley and Cusseta, undifferentiated)_

35

35

257

292

Sand: coarse-grained

Potential Water-Bearing Zones:

85

275

Location: 6-7 mi. southwest of Buena Vista Owner: No.2 E. N. Murray Driller: Southeastern Drilling Company Drilled: December 1954

MARION COUNTY
Well No.: GGS 409 Elev.: 562

Thickness (feet)

Depth (feet)

Paleocene: Midway Group: Clayton Formation: Clay: red, very sandy, limonitic_

28

28

Upper Cretaceous: Providence Sand:

Sand: coarse-grained, arkosic__

10

38

Clay: yellow, very sandy, limonitic____ _

2

40

Sand: fine to coarse-grained, limonitic

10

50

Sand: fine to medium-grained, angular; interbedded clay (or

kaolin), white, micaceous, sandy__

75

125

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

295

Ripley and Cusseta (Undifferentiated):

Thickness (feet)

Marl: bluish-gray, silty, micaceous, pyritiferous, sideritic,

glauconitic, fossiliferous (Foraminifera)

135

Anomalina clementiana, Globotruncana sp., Gaudryina rudita at 130-140.

Sand: fine to coarse-grained, angular; interbedded clay,

dark-gray to brown, micaceous, pyritiferous, lignitic

120

Depth (feet)
260
380

Summary:

Paleocene (Clayton formation)

28

28

Upper Cretaceous (Providence sand)----------------------

97

125

Upper Cretaceous (Ripley and Cusseta, undifferentiated) _____

255

380

Potential Water-Bearing Zones: Sand: fine to coarse-grained _

76

366

Location: 2 mi. north of Tazewell, at the "Bryant Place" Owner: No. 1 Tommy Brock Driller: R. G. Duke Drilled: December 1954

MARION COUNTY Well No.: GGS 427

Thickness Depth

(feet)

(feet)

No samples __ _

45

45

In Upper Cretaceous: Tuscaloosa Formation:

Sand: fine to coarse-grained, limonitic, arkosic; interbedded

kaolin, white, micaceous________________________

100

145

Sand: coarse-grained, angular________ _

15

160

Sand: fine to medium-grained, arkosic

5

165

Summary:

No samples ______ ______________

_____________________ _

In Upper Cretaceous (Tuscaloosa formation)

45

45

120

165

Potential Water-Bearing Zones: Sand: fine to coarse-grained __

25

160

296

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 7.5 mi. south of Marion-Talbot County line, east side of Highway 41, north side of dwelling
Owner: No.1 James Rush Driller: Southeastern Drilling Company Drilled: August 1955

MARION COUNTY
Well No.: GGS 443 Elev.: 680

Thickness Depth

(feet)

(feet)

No samples __

10

10

In Upper Cretaceous: Blufftown and Eutaw (Undifferentiated:

Sand: fine to coarse-grained, angular, arkosic, limonitic; in-

terbedded clay, gray to yellow to brown to red (mottled),

micaceous, sandy ___

244

254

Summary:

No samples _______________ -----------------------------------------------

10

10

In Upper Cretaceous (Blufftown and Eutaw, undifferentiated) 244

254

Potential Water-Bearing Zones:
Sand: fine to coarse-grained_____ Sand: fine to coarse-grained_______ _ Sand: fine to coarse-grained_____ Sand: fine to coarse-grained

8

176

7

234

3

246

I)

254

Remarks:
Additional aquifers occur at still lower levels, i.e. in the more deeply buried Tuscaloosa formation.

Location: Approximately 4 mi. southeast of Buena Vista, about % mi. west of Highway 26, Land Lot 207, Land District 31
Owner: No. 1 Senator Burgin Operator: Lee Oil and Gas Company Drilled: February 1956

MARION COUNTY
Well No.: GGS 471) Elev.: 600 1

Thickness Depth

(feet)

(feet)

Paleocene: Midway Group: Clayton Formation:

Clay: brick-red, very sandy, limonitic; inclusions of kaolin,

white, sandy, micaceous__________________________________

10

10

No samples __ _

10

20

1 Approximate elevation above sea level.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

297

In Upper Cretaceous: Providence Sand:

Thickness Depth

(feet)

(feet)

Sand: fine to coarse-grained, subangular, micaceous, limon-

itic; interbedded clay, light-gray to red (somewhat mottled),

sandy, micaceous _

_ _____________________ _

80

100

Sand: coarse-grained, subangular, arkosic, limonitic; inter-

bedded clay, dark-bluish-gray, sandy, micaceous, pyritifer-

ous; indurated sand, fine to medium-grained, rather dense,

crystalline, pyritiferous, micaceous, fossiliferous (mega-

fossils) _____ -------------------------------------------------------------------------------

80

180

In Ripley and Cusseta (Undifferentiated):

Sand: fine to medium-grained, subangular; interbedded clay,

red to dark-bluish-gray, sandy, micaceous, pyritiferous,

fossiliferous at certain levels (macroshells) ______

250

430

Sand: coarse-grained, subangular; interbedded clay, white to

red (mottled), sandy, micaceous ______________ _

50

480

In Blufftown and Eutaw (Undifferentiated):

Sand: fine to medium-grained, subangular; interbedded clay,

dark-brown, somewhat laminated, silty, very micaceous,

lignitic, pyritiferous __________ ____

_______________ _

30

510

Clay: dark-brown, laminated, silty, very micaceous, lignitic,

pyritiferous, fossiliferous (macroshells, Ostracods and

Foraminifera at depth); interbedded sand, fine to medium-

grained, subangular, micaceous, pyritiferous, lignitic

410

920

Sand: medium-grained, coarser-grained with increased depth,

subangular, phosphatic, somewhat arkosic, micaceous, py-

ritiferous _____________

__________________ _

40

960

In Upper Tuscaloosa Formation:
Sand: coarse-grained, subangular, arkosic, lignitic, containing scattered grains of "rose quartz"__ ------------------- ------------------ 110

Sand: as above but somewhat finer-grained; interbedded kao-

lin, light-gray to red (mottled), sandy, micaceous_

80

1,070 1,150

In Middle Tuscaloosa Formation:
Clay: dark-gray to pale-yellowish-green, somewhat iron stained, laminated, sandy, micaceous, carbonaceous; interbedded sand, coarse-grained, subangular, arkosic______________________ _ 160

1,310

298

GEORGIA GEOLOGICAL SURVEY BULLETIN '10

In Lower Tuscaloosa Formation:

Thickness (feet)

Sand: coarse-grained, subangular grains of "rose quartz";

interbedded clay, yellowish-green to brick red to purple

(mottled), very micaceous, greasy appearing, sandy__________

220

Sand: as above but finer-grained; interbedded clay, as above . 60

Depth (feet)
1,530 1,590

Basement Complex (Undifferentiated):

Crystalline rock: dark-gray to black, dense, crystalline, biotite

gneiss ( 1) __

-------------------------------------------------- -------------------------- 180

Summary:

Paleocene (Clayton formation) __________________________

10

No samples ____ ------------------------------------------------------------- _____________________ 10

In Upper Cretaceous (Providence sand) _________________

160

In Upper Cretaceous (Ripley and Cusseta, undifferentiated) _______ _ 300

In Upper Cretaceous (Blufftown and Eutaw, undifferentiated) ____ 480

In Upper Cretaceous (Tuscaloosa formation)------------------------------------ 630

Basement complex (undifferentiated)______________

____________________

180

Remarks:
1. Interval 430-480 probably representative of Cusseta sand. 2. Interval 920-960 possible Eutaw formation restricted.

1,770
10 20 180 480 960 1,590 1,770

Location: Below elevated steel reservoir in Colquitt Owner: No. 2 City of Colquitt Driller: W. B. Graham Drilled: June 1946

MILLER COUNTY
Well No.: GGS 112 Elev.: 169

Thickness Depth

(feet)

(feet)

No samples __

450

450

In Lower Eocene: Wilcox Group (Undifferentiated):

Limestone: white, sandy, coarsely glauconitic, fossiliferous

(Foraminifera)

------------------------------- _______________________ 70

520

Asterocyclina sp. at 510-520.

Sand: fine to medium-grained, glauconitic, fossiliferous

(Foraminifera) ____

140

660

Eponides dorfi at 600-610.

Marl: gray, silty, carbonaceous, micaceous No samples ______________

50

710

230

940

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

299

In Paleocene: Midway Group: Clayton Formation:

Thickness (feet)

Limestone: gray, crystalline, fossiliferous (Foraminifera) ___ 100

Anomalina midwayensis at 940-950. Operculinoides sp. at 1010-1020.

Depth (feet)
1,040

Summary:

No samples ______ ______________

_____________________________

In lower Eocene (Wilcox group, undifferentiated) _________________ _

No samples ______________________

_______________

In Paleocene (Clayton formation) _________________

______________ _

450

450

260

710

230

940

100 1,040

Limestone

Potential Water-Bearing Zones:

100 1,040

Location: In Sale City below elevated steel reservoir Owner: No. 1 Sale City Driller: Gray Well Pump Company Drilled: February 1940

MITCHELL COUNTY
Well No.: GGS 100 Elev.: 3501

Thickness Depth

(feet)

(feet)

No samples _________

315

315

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white to cream, dense, much calcitized, crystalline,

fossiliferous at certain levels (Foraminifera) ____

60

375

Camerina striatoreticulata at 315-330.

No samples ________________ ------------------------------------------------------------ _______________ 15

390

Limestone: as above; interbedded dolomitic limestone, dark-

brown, saccharoidal

_______________ ____________________ _________________________ 110

500

Summary:

No samples __ ______________

_____________________________ _

In upper Eocene (Ocala limestone) ____________

Limestone __

Potential Water-Bearing Zones:

'Average elevation based on Georgia State Highway Maps.

315

315

185

500

185

500

300

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: About 5.5 mi. east of Pelham, Land Lot 133, lOth Land District
Owner: No.1 J. H. Pullen Driller: Stanolind Oil and Gas Company Drilled: August 1944

MITCHELL COUNTY
Well No.: GGS 109 Elev.: 338
(derrick floor)

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Sand: fine to coarse-grained, angular, limonitic, somewhat

arkosic; interbedded clay, mottled to light-gray, sandy.

70

70

Clay: pale-green, sandy; some sand as above. .

60

130

Clay and sand: as above; interbedded limestone, white, sandy 100

230

Limestone: white, sandy; interbedded clay and sand .

110

340

Sand: fine to coarse-grained; some clay and limestone

20

360

Sand, clay, and limestone: as above; some dolomitic limestone,

brown, saccharoidal

______________ _

10

370

Oligocene (Undifferentiated):

Limestone, clay, and sand: as above; more nodular limestone

with depth, cream, rather massive, fossiliferous in certain

zones (macroshells, Ostracods, and Foraminifera)

25

395

Rotalia byramensis var., at 370-380.

Upper Eocene: Jackson Group: Ocala Limestone:

Dolomitic limestone: dark-brown, saccharoidal; interbedded

limestone, cream, much calcitized, fossiliferous (macroshells

and Foraminifera) ______

----------------

315

710

Gypsina globula at 420-430. Asterocyclina nassauensis, Camerina striatoreticulata at 450-460.

Dolomitic limestone: as above

80

790

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: light-gray, sandy, coarsely glauconitic, fossilifer--

ous (macroshells, Ostracods, and Foraminifera); inter-

bedded marl, light-gray, finely glauconitic, fossiliferous

(Ostracods and Foraminifera) ; indurated sand, fine to me-

dium grained, light-gray, finely glauconitic

145

Lepidocyclina (Polylepidina) antillea at 760-770. Siphonina claibornensis, Cibicides u-esti at 860-870.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

301

Tallahatta Formation:

Thickness Depth

(feet)

(feet)

Limestone: light-gray, sandy, somewhat argillaceous, finely glauconitic, fossiliferous (Foraminifera) _______ ----------------------------- 215

1,150

Valvulineria jacksonensis var. persimilis, Valvulineria danvillensis var. gyroidinoides, Cibicides VJesti, Cibicides tallahattensis at 1045-1060.

Dolomitic limestone: dark brown, saccharoidal, coarsely glau-

conitic _______________ _______________

------------------------------------------------- 45

1,195

In Lower Eocene(?): Wilcox Group (Undifferentiated):
Indurated sand: fine to medium-grained, coarsely glauconitic, fossiliferous (a coquina) ______ ----------------------------------------------------------- 30
No samples __ -------------------------------------------------------------------------------------------- 30
Marl: light-gray, somewhat fissile, silty, carbonaceous, micaceous, glauconitic, fossiliferous (some Foraminifera) ______________ 10
Robulus sp., Eponides dorfi, Alabamina VJilcoxensis, Marginulina sp. at 1255-1265.
Sand: fine to coarse-grained, micaceous, abundantly glauconitic; interbedded marl, as above__________________________________ ------------------- 60

1,225 1,255 1,265
1,325

Paleocene: Midway Group: Clayton Formation:

Limestone: white, dense; interbedded sand, fine-grained, limey

(somewhat indurated), finely glauconitic, micaceous, fossil-

iferous (macroshells and some Foraminifera) ; clay, light-

gray, fissile, glauconitic, fossiliferous (Foraminifera) __

100

Pseudophragmina stephensoni, Operculinoides catenula at 1335-1350.
Anomalina acuta at 1395-1410.

Limestone: light-gray, dense, coarsely glauconitic, sandy, fos-

siliferous (macroshells, bryozoan remains and Foramini-

fera) ; interbedded thin beds of clay, light-gray, fissile

glauconitic

150

Vaginulina midwayana at 1545-1560.

Limestone: cream, granular, loosely cemented, cherty_________ ________ 110

Marl: dark-gray, sandy, glauconitic, fossiliferous (abundant

Foraminifera)

------------------- ------------------------- 55

1,425
1,575 1,685 1,740

302

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):

Thickness Depth

(feet)

(feet)

Marl: bluish-gray to brown, somewhat sandy, chalky, glauconitic, micaceous, pyritiferous, fossiliferous (macroshells, Ostracods and Foraminifera)______________________________________________ __ 1,155

2,895

Bolivinoides decorata, Globotruncana cretacea at 1890-1905. Kyphopyxa christneri at 2370-2385. Vaginulina texana at 2625-2640.

Sand: fine to medium-grained, more or less indurated, phos-

phatic, micaceous, glauconitic, fossiliferous (macroshells) ;

interbedded clay or shale, dark-gray to pale-green, fissile,

silty, finely micaceous, glauconitic ___ _

210

3,105

Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, arkosic; interbedded

clay, pale-green, sandy, iron-stained__ ____ ______ __ _

___ 295

"Shale": dark-gray to black, fissile, finely micaceous, carbon-

aceous, fossiliferous (macroshells at certain levels)_

100

Sand: fine to coarse-grained, glauconitic; interbedded shale,

as above ___________________ ----------------------------------- ________________________

100

Sand: fine to coarse-grained, angular, massive, arkosic; interbedded clay, green to purple (mottled), sandy, micaceous_ 650

3,400 3,500 3,600 4,250

In Lower Cretaceous(?) (Undifferentiated):

Clay: dark-green to purple to red, blocky, micaceous, sideritic,

greasy appearance; brick-red, sandy, highly micaceous at

depth ____

---------------------------------------------------

38 4,2881

Summary:

Miocene (undifferentiated) __

___________________

____________________ 370

Oligocene (undifferentiated) _______

_______________

25

Upper Eocene (Ocala limestone)__

________________ 395

Middle Eocene (Lisbon formation) ______________ --------------------------------------- 145

Middle Eocene (Tallahatta formation)---------------------------------- ______________ 260 In lower Eocene ( ?) (Wilcox group, undifferentiated)______________________ 130

Paleocene (Clayton formation)---------------------------------------------------------------- 415 Upper Cretaceous (post-Tuscaloosa, undifferentiated) ______________________ 1,365

Upper Cretaceous (Tuscaloosa formation)________

____________________ 1,145

In Lower Cretaceous ( ?) (undifferentiated)_

38

370 395 710 635 1,195 1,325 1,740 3,105 4,250 4,288

1Not reported below 4288. Total depth 7490.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

303

Potential Water-Bearing Zones:

Thickness (feet)

Limestone __________________ --------------------------------------------------------------- _______________ 120

Limestone ________ ----------------------------------------------------------------------------------------- 170 Sand: fine to coarse-grained__________________________________________________________________ 60

Limestone

------------------------------------------------------------------------------------------ 100

Limestone _______ -------------------------------------------------------------------------------------------- 150

Depth (feet)
500 1,150 1,325 1,425 1,575

Location: At City Water Works in Camilla Owner: No. 3 City of Camilla Driller: Stevens Southern Company Drilled: June 1949

MITCHELL COUNTY
Well No.: GGS 218 Elev.: 182

Residuum:

Clay: mottled, sandy, limonitic_____ -----------------------------

20

20

Sand: fine to coarse-grained, angular______________________

10

30

Clay: mottled, sandy, limonitic______ -------------------------- __________________________ 60

90

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, porous, fossiliferous (abundant bryozoan

remains and Foraminifera)_________

-------------------------------------- 160

250

Operculinoides sp. common at 90-100. Camerina striatoreticulata at 130-140. Amphistegina pinarensis var. at 240-250.

Limestone: white, dense, highly calcitized and recrystallized______ 60

310

Summary:

Residuum ------------------------------------- ------------------------------------------ ------------------- 90

90

Upper Eocene (Ocala limestone)____

220

310

Limestone

Potential Water-Bearing Zones:

160

250

304

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 1.7 mi. northeast of Cotton, 0.1 mi. north of Highway 93
Owner: No.1 Cotton Consolidated Elementary School Drilled: October 1954

MITCHELL COUNTY
Well No.: GGS 400 Elev.: 3401

Thickness Dep.th

(feet)

(feet)

Miocene (Undifferentiated):

Clay: bluish-gray to purple (mottled), sandy, limonitic_

23

23

Clay: tan to olive-green, sandy, limonitic _

41

64

Clay: yellowish-green, sandy, phosphatic (finely disseminated) __ 51

115

Dolomitic limestone: light-brown, rather dense

13

128

Clay: dark-green, sandy; interbedded limestone, white, dense,

sandy

-------------------------------- ----------------------

----- ---------- 80

208

Limestone: white, dense, sandy, dolomitized and brown at

depth _____ -------------------------------------------------------------

108

316

Miocene (undifferentiated) ___

Summary:

316

316

Potential Water-Bearing Zones: Limestone _-------------------------------------

108

316

Remarks: Better aquifers occur below total depth (316) of above well.

MITCHELL COUNTY

Location: 10.5 mi. southwest of Camilla via Highway 97 Well No.: GGS 417

to junction with county road, then 0.12 mi. west via county road to site which

is 0.1 mi. north of county road

Owner: No. 1 Oak Grove Elementary School

Driller: Layne-Atlantic Company

Drilled: March 1955

Thickness Depth

(feet)

(feet)

Residuum:

Clay: mottled, sandy, limonitic, fragments of residual lime-

stone at depth______________________________________________________________________________________ 38

38

'Average elevation based on Georgia State Highway Maps.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

305

Thicknes.> (feet}
Clay: dark-brown, sandy, limonitic; residual limestone, as above 20

No samples ______________ ---------------- ---------------------------------------------------------

5

Depth (feet}
58
63

In. Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: somewhat leached but soft, porous, fossiliferous

(some Foraminifera) __ ____________________________________

21

84

Carnerina cf. C. striatoreticulata at 63-84.

Summary:

Residuum

__________________________________________________ _

No samples ----------------------------------------In upper Eocene (Ocala limestone)

58

58

5

63

21

84

Potential Water-Bearing Zones: Limestone .. ______________________________ -------------------------------------------

21

84

Location: In Camilla Owner: No. 4 City of Camilla Driller: Layne-Atlantic Company

MITCHELL COUNTY
Well No.: GGS 564 Elev.: 1801

Thickness Depth

(feet)

(feet)

Residuum:

Clay: light-gray to tan to pink (mottled), very sandy, limonitic 25

25

Clay: dark-brown to olive-green, lignitic, sandy, limonitic

21

46

Limonitic bed: dark-brown, dense _

4

50

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: yellow to tan at depth, calcitized, more calcitized

and crystalline with depth, fossiliferous (macroshells, echi-

noid and bryozoan remains, Ostracods, and Foraminifera) ___ 291

341

Operculina rnariannensis at 50-61. Heterostegina ocalana, Gypsina globula, Lepidocyclina sp. at 101-115. Carnerina striatoreticulata at 115-135. Arnphistegina pinarensis var. at 255-263. Lepidocyclina sp. common at 330-337.

'Average elevation based on Georgia State Highway Maps.

306

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Middle Eocene(?): Claiborne Group (Undifferentiated): Sandstone: tan, fine-grained, angular, coarsely glauconitic

Thickness Depth

(feet)

(feet)

?

341

Summary:

Residuum

_____________________

_________________ _

Upper Eocene (Ocala limestone) ________

____________________

Middle Eocene (?) (Claiborne group, undifferentiated)

50

50

291

341

?

341

Limestone _________

Potential Water-Bearing Zones:

291

341

Location: 0.2 mi. southeast of Jenkins Quarry Owner: Test Hole Driller: Marquette Cement Company

MITCHELL COUNTY
Well No.: GGS 620 Elev.: 270

Thickness Depth1

(feet)

(feet)

In Oligocene (Undifferentiated):

Limestone: white, somewhat saccharoidal, fossiliferous (Fora-

minifera); some clay, pale brownish-gray, blocky, tough________

16

Asterigerina subacuta, Siphonina advena, Lepidocyclina sp. at 16.

Limestone: as above, but more calcitized, sparingly fossilifer-

ous (rare Foraminifera)_______

_____ ________ _

_______________

30

Limestone: white, much calcitized, somewhat nodular, granu-

lar, porous __

_____________________ _

60

Limestone: cream, somewhat saccharoidal, nodular, calcitized____

78

Limestone: as above, but fossiliferous (Foraminifera) __

93

Rotalia mexicana var. at 93.

Limestone: as above

113

Limestone: as above_____

125

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: flat-white, much calcitized, somewhat saccharoidal,

fossiliferous (abundant bryozoan remains and some Fora-

minifera)

-----------------------------------------------------------------------------------

132

Eponides jacksonensis, Operculina mariannensis at 132.

1 Depth below land surface of spot samples.

r

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

307

Limestone: as above___

Thickness (feet)

Limestone: flat-white, more calcitized than above, granular, saccharoidal, fossiliferous (bryozoan remains) _____

Depth (feet)
151
171

Summary:

In Oligocene (undifferentiated) ___ _

125

In upper Eocene (Ocala limestone)

171

Limestone

Potential Water-Bearing Zones:

155

171

:Location: 10.35 mi. northwest of Uvalda (map distance), and 0.5 mi. south of McAllister Creek
Owner: No.1 Hugh Peterson Driller: Dixie Well Drilling Company Drilled: September 1952

MONTGOMERY COUNTY
WeB No.: GGS 319 Elev.: 133

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Sand: fine to medium-grained, angular, arkosic; interbedded

clay, light-gray, sandy, limonitic_

50

50

Clay: dark-green, sandy; interbedded sand, as above __

50

100

Clay: dark-green, sandy, sandier with depth; interbedded

limestone, white, somewhat calcitized and crystaiiine, sandy,

fossiliferous (macroshells at depth) ; beds of sand, fine to

coarse-grained, angular grains, phosphatic (at depth)_

120

220

Macroshells at 140-150.

Black phosphatic pebbles common at 160-170.

Macroshe11s abundant at 200-220.

Oligocene (Undifferentiated):

Limestone: white to light-gray, nodular, fossiliferous (bryo-

zoan remains and some Foraminifera)------------------------------------------ 20

240

Elphidium sp. at 220-230.
- Pyrgo sp. at 230-240.
2Estimated from spot samples.

308

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Thickness (feet)

Miocene (undifferentiated) ____ --------------------------- __________________________________ 220

Oligocene (undifferentiated) __

20

Depth (feet)
220 240

Potential Water-Bearing Zones: Sand: fine to coarse-grained______________________________________________________ Limestone ____________________________________ ------------------------------------------------

10

180

20

240

Location: Near Mt. Vernon Owner: No. 1 Mt. Vernon Elementary and High
School Driller: M. M. Gray Drilling Company Drilled: 1955

MONTGOMERY COUNTY
Well No.: GGS 450 Elev.: 228

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: mottled, sandy, limonitic; interbedded sand, fine to

coarse-grained, angular, arkosic______________________________________________________ 60

60

Clay: yellowish-green, sandy, fossiliferous at depth; inter-

bedded sand, fine to coarse-grained, angular, arkosic, phos-

phatic at depth___________________________________________________________________

270

330

Black phosphatic pebbles common at 200-210. Macroshells at 290-300.

Oligocene (Undifferentiated):

Limestone: light-gray, extremely dense, massive, cherty,

sandy, sparsely phosphatic (at top), fossiliferous (some

echinoid and bryozoan remains and Foraminifera, latter

abundant at depth)---------------------------------------------------------------------------- 120

450

Rotalia mexicana var., Quinqueloculina sp. at 340-350. Gypsina globula1 at 360-370. Lepidocyclina1 sp., Coskinolina?l sp. at 400-410. Dictyoconus1 sp. at 440-450.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, relatively soft, somewhat calcitized and

granular, nodular at certain levels, fossiliferous (echinoid

and bryozoan remains and Foraminifera)__

____________________ 50

500

Lepidocyclina2 sp. at 450-460. Lepidocyclina sp. common at 480-490.

'Reworked(?) fossil of middle Eocene age. 'Probably Lepid. chaperi.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

309

Summary:

Thickness (feet)

Miocene (undifferentiated) _----------------------------------------------- ______ _________ 330

Oligocene (undifferentiated) _______________ ----------------------------------- ______________ 120

Upper Eocene (Ocala limestone) _____ ---------------------------------------

50

Depth (feet)
330 450 500

Potential Water-Bearing Zones:

Limestone ------- --------------------------------------------- ----------------------------------------------- 160

500

Location: Near Uvalda Owner: No.1 Uvalda Elementary School Driller: Scott Brothers Drilled: 1955

MONTGOMERY COUNTY
Well No.: GGS 514 Elev.: 185

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Sand: fine to coarse-grained, limonitic; some clay, pale-green

to red (mottled), sandy________________________________________________________________ 10

10

Clay: pale-green, sandy________________________________________________________________

50

60

Sand: fine to medium-grained, coarser and arkosic at depth;

some clay, as above_________________________________________________________________________ 20

80

Clay: pale-green, micaceous, cherty and phosphatic at depth___ 120

200

Light-brown chert common at 90-100.

Fine-grained phosphatic pebbles at 100-110.

Sand: fine-grained, finely phosphatic; some clay, as above

10

210

Clay: dark-green, sandy

20

230

Sand: fine to coarse-grained, arkosic ____________________________________________ 10

240

Clay: dark-green, sandier and abundantly phosphatic at depth

40

280

Clay: as above; fragments of limestone, white, weathered,

macroshells --------------------------------------- ----------------------------- ----------------- 10

290

Limestone: white, sandy, phosphatic, fossiliferous_____________

20

310

Limestone: as above; clay, pale-green, blocky, with conchoidal

fracture _______________ ------------------------------------------------------------------------- 80

390

310

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Sand: fine to coarse-grained, subangular, more indurated at depth, phosphatic, fossiliferous (a coquina at certain levels)____ 40

Depth (feet)
430

Oligocene (Undifferentiated):

Limestone: light-gray, somewhat reddish-brown to cream at

depth, nodular, very sandy, sparsely phosphatic, fossilifer-

ous (echinoid and bryozoan remains, Ostracods, and Fora-

minifera at certain levels)_

________________ _

90

520

Rotalia mexicana var. at 440-450.
Quinqueloculina sp., Elphidium sp., Rotalia mexicana var. at 450-460.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: reddish-brown to cream, rather soft- and chalky,

somewhat granular at depth, fossiliferous (common to abun-

dant echinoid and bryozoan remains and Foraminifera) _________ 27

547

Camerina striatoreticulata, Lepidocyclina sp. at 520-530. Camerina striatoreticulata abundant at 530-547.

Summary:
Miocene (undifferentiated) Oligocene (undifferentiated) _ ________ Upper Eocene (Ocala limestone) __

430

430

90

520

27

547

Limestone ___ _

Potential Water-Bearing Zones:

107

547

Location: Near Ailey Owner: No. 1 Ailey Elementary and High School Driller: Scott Brothers Drilled: 1955

MONTGOMERY COUNTY
Well No.: GGS 515 Elev.: 253 1

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: pale-green to mottled, sandy; interbedded sand, fine to

medium-grained, subangular, phosphatic

__________________ _

315

315

1Average elevation based on Georgia State Highway Maps.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

311

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: light-gray, nodular, extremely dense and crystal-

line, very sandy, somewhat cherty, sparsely phosphatic, fos-

siliferous (some echinoid and bryozoan remains, and Fora-

minifera) ------------------------------------------------------------------------------

65

Rotalia mexicana var., Asterigerina sp. at 315-320. Gypsina globula2 , Quinqueloculina sp., Rotalia mexicana var., Asterigerina sp. at 320-330.

Limestone: as above, but reddish-brown__

20

Depth (feet)
380
400

Upper Eocene: Jackson Group: Ocala Limstone:

Limestone: cream, rather soft and chalky, somewhat granular

at depth, fossiliferous (echinoid and bryozoan remains and

Foraminifera) ____ ------------------------------------------------------- _______________________ 112

512

Lepidocyclina sp. common at 400-410. Gypsina globula common at 410-420. Lepidocyclina3 sp. common to abundant at 450-460.

Summary:
Miocene (undifferentiated) __________ Oligocene (undifferentiated) ______ Upper Eocene (Ocala limestone)

315

315

85

400

112

512

Limestone _______

Potential Water-Bearing Zones:

132

512

Location: Approximately 6 mi. south of Soperton on U.S. Highway 221 (State Highway 56)
Owner: No.1 C. H. Goff Driller: M. M. Gray Well Drilling Company Drilled: 1959

MONTGOMERY COUNTY Well No.: GGS 600

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: pale-yellowish-green with red to purple streaks

(mottled), very sandy, limonitic___

50

50

Sand: fine to medium-grained, subangular, arkosic

55

105

'Reworked ( ? ) fossil of middle Eocene age. 'Probably Lepid. chaperi.

312

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Sand: as above but coarser-grained

45

Clay: dark-brownish to olive-green, very sandy----------------------------- 125

Sand: fine-grained, subangular___________________

5

Sand: coarse-grained, subangular, arkosic

3

Depth (feet)
150 275
280 283

Oligocene (Undifferentiated):

Limestone: light-gray, much calcitized, saccharoidal, fossil-

iferous (molds and impressions of megafossils and some

Foraminifera) ----------------------------------------- _________________________________________ 3

286

Quinqueloculina sp. at 280-286.
Pyrgo sp., Robulus arcuato-striatus var., Reussella sp., Rotalia mexicana var., Gypsina globula\ Lepidocyclina1 sp. at 286-f!95.

Limestone: cream, rather massive, much calcitized, saccha-

roidal, fossiliferous (some Gastropods, echinoid and bryo-

zoan remains and some Foraminifera) __

119

405

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray to white, much calcitized, crystalline,

fossiliferous (some macroshells, echinoid remains, bryozoan

remains and some Foraminifera) ________ _

150

555

Bryozoan remains common at 415-425.

Lepidocyclina sp. at 425-435.

Operculinoides sp. at 445-455.

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: as above but sandy_________________________________________

70

625

Siphonina claibornensis, Cibicides pseudoungerianus var.

lisbonensis, Cibicides westi at 565-585.

Limestone: light-gray, massive, much calcitized, crystalline,

dense, sparsely glauconitic, sparingly fossiliferous at cer-

tain levels (some macroshells, echinoid and bryozoan re-

mains and Foraminifera)____________________

________________________ 20

645

Summary:
Miocene (undifferentiated) Oligocene (undifferentiated) In upper Eocene (Ocala limestone) _____ _ Middle Eocene (Lisbon formation) _________ _

283

283

122

405

150

555

90

645

Limestone ________

Potential Water-Bearing Zones:

-------------- 269

555

'Reworked(?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

313

Location: 0.5 mi. north of main entrance to Fort Benning Military Reservation, 0.2 mi. northwest of junetion of Highways 1 and 85, west side of Highway 85
Owner: No.1 W. M. McRae Driller: L. M. Gray Drilling Company Drilled: September 1951

MUSCOGEE COUNTY
Well No.: GGS 235 Elev.: 2501

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: coarse-grained (up to gravel size) ; interbedded clay,

brown, sandy ___________

------------------------------------

54

54

In Upper Cretaceous: Tuscaloosa Formation:

Kaolin: gray, micaceous, sandy

5

59

Sand: fine to coarse-grained, angular, arkosic; interbedded

clay, gray to red (mottled), micaceous, sandy______

200

259

Clay: pale-green to red (mottled), sandy, micaceous; inter-

bedded sand, fine to coarse-grained, angular, arkosic

117

376

Clay: brick-red, sandy, highly micaceous ______________ _

63

439

In Basement Complex (Undifferentiated): Crystalline rock: much altered through weathering_

6

445

Summary:
Pliocene to Recent (undifferentiated)_ In Upper Cretaceous (Tuscaloosa formation) In basement complex (undifferentiated) __________________

54

54

385

439

6

445

Potential Water-Bearing Zones:
Sand: fine to coarse-grained__ Sand: fine to coarse-grained

20

149

40

239

Remarks: Driller reported "hard rock" (probably unaltered basement complex) at 445.

'Average elevation based on Georgia State Highway Maps.

314

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Few miles southwest of Fort Valley, at Fort Valley State College
Owner: No.1 Fort Valley State College Driller: Layne-Atlantic Company Drilled: March 1953

PEACH COUNTY
Well No.: GGS 348 Elev.: 517

Thickness Depth

(feet)

(feet)

Paleocene: Midway Group: Clayton Formation: Clay: gray to red (mottled), sandy_____

38

38

Upper Cretaceous: Providence Sand:

Sand: coarse-grained, limonitic; clay (or kaolin), dark-brown

to yellow to purple (mottled), sandy, micaceous_

7

45

Kaolin: cream, micaceous, sandy________

20

65

Sand: coarse-grained, angular; some kaolin, light-gray, mica-

ceous

20

85

Kaolin: light-gray, micaceous__

20

105

Sand: fine to coarse-grained; some kaolin, white to red

(mottled), micaceous _____

____________________________

20

125

Sand: coarse-grained, angular, limonitic

23

148

Ripley and Cusseta (Undifferentiated):

Clay: light-gray to yellow, micaceous, sandy _

6

154

Sand: fine to medium-grained; some clay, as above _

16

170

Sand: fine to medium-grained; interbedded kaolin, white to

gray to red (mottled), micaceous, sandy____

____________________ 45

215

Blufftown and Eutaw (Undifferentiated):

Sand: fine to coarse-grained, angular, limonitic; interbedded

clay (or kaolin), gray to black, micaceous, lignitic

110

325

Black, lignitic clay prominent at 225-245.

Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, limonitic, rather mas-

sive; interbedded clay (or kaolin), gray to red (mottled),

micaceous, sandy ---- -------------------------- ------------------------- -- ------------------ 170

495

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

315

Summary:

Thickness (feet)

Paleocene (Clayton formation)______

_______________________ _

38

Upper Cretaceous (Providence sand)______ _____________________________________ 110

Upper Cretaceous (Ripley and Cusseta, undifferentiated) ______________ 67

Upper Cretaceous (Blufftown and Eutaw, undifferentiated) ____ 110

Upper Cretaceous (Tuscaloosa formation)__

_____________________ 170

Depth (feet)
38 148 215 325 495

Potential Water-Bearing Zones:

Sand: fine to coarse-grained

35

140

Sand: fine to medium-grained__ _

30

205

Sand: fine to coarse-grained________________________

75

300

Sand: fine to coarse-grained_ __

55

415

Sand: fine to coarse-grained ____________________

30

455

Sand: fine to coarse-grained _ __________________________________________________________ 15

487

Location: In Fort Valley Owner: No. 4 City of Fort Valley Driller: Layne-Atlantic Company Drilled: January 1954

PEACH COUNTY
Well No.: GGS 369 Elev.: 5251

Thickness Depth

(feet)

(feet)

Paleocene: Midway Group: Clayton Formation:

Clay: brick-red, very sandy, limonitic, and scattered frag-

ments of residual limestone________________________________________________

24

24

Sand: fine to coarse-grained, angular___ No samples ___________ __________________________

8

32

3

35

In Upper Cretaceous: Providence Sand: Kaolin: white, micaceous, sandy Sand: fine to coarse-grained__

13

48

72

120

In Ripley and Cusseta (Undifferentiated): Clay: gray to red (mottled), micaceous, sandy_____

90

210

In Blufftown and Eutaw (Undifferentiated): Sand: fine to coarse-grained; clay, gray, very micaceous Clay: gray, silty, very micaceous_______________ Sand: fine to coarse-grained; some clay, as above __
'Average elevation based on Georgia State Highway Maps.

24

234

16

250

30

280

316

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Tuscaloosa Formation:

Thickness (feet)

Sand: fine to coarse-grained, arkosic; some clay (or kaolin),

gray to pink (mottled), micaceous, sandy___

35

No samples_

11

Sand: coarse-grained, arkosic____________________

34

No samples_

36

Sand: fine to coarse-grained__________________

109

Clay: gray to brick-red, very micaceous, sandy_

12

Depth (feet)
315 326 360 396 505 517

Summary:

Paleocene (Clayton formation)_____________________

__ _______ ________________ 32

32

No samples ------------------------------------------------------------------------- ------------------------ 3

35

In Upper Cretaceous (Providence sand)---------------------------------------------- 85

120

In Upper Cretaceous (Ripley and Cusseta, undifferentiated)__________ 90

210

In Upper Cretaceous (Blufftown and Eutaw, undifferentiated)____ 70

280

Upper Cretaceous (Tuscaloosa formation)_____

______________

237

517

Potential Water-Bearing Zones:

Sand: fine to coarse-grained_______________

25

145

Sand: fine to coarse-grained______

______________ 30

190

Sand: fine to coarse-grained_________________________________

___ __ __ _____

20

230

Sand: fine to coarse-grained__ ________ ________________________ ___ ______ ___ _

40

320

Sand: fine to coarse-grained ---------------------------- ------------------- ____ Sand: fine to coarse-grained_______________________________

40

410

25

480

Remarks:
Overall quality of samples poor. Potential water-bearing zones selected from electric log of well.

Location: 1.0 mi. northeast of Central of Georgia R.R. Station, in Fort Valley
Owner: No.1 Atlantic Ice Company Driller: Layne-Atlantic Company Drilled: April 1955

PEACH COUNTY
Well No.: GGS 426 Elev.: 5251

Thickness Depth

(feet)

(feet)

Paleocene: Midway Group: Clayton Formation:

Clay: brick-red, sandy, limonitic______________________________________________________ 20

20

1Average elevation based on Georgia State Highway Maps.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

317

Upper Cretaceous: Providence Sand: Kaolin: white to red (mottled), sandy______________ Sand: fine to coarse-grained; some clay, as above Kaolin: white to red (mottled), very sandy___________________________ Sand: fine to medium-grained, angular, limonitic, arkosic_ Clay: mottled, very sandy___

Thickness Depth

(feet)

(feet)

10

30

25

55

7

62

13

75

17

92

Ripley and Cusseta (Undifferentiated):

Clay: light tan, sandy_____________ -------------------------------------------------

16

108

Sand: fine to coarse-grained, angular; some clay, as above

39

147

Sand: fine to coarse-grained, angular, limonitic, arkosic ________

33

180

Blufftown and Eutaw (Undifferentiated): Clay: dark-gray to black, sandy, very micaceous __ Sand: fine to coarse-grained, angular, arkosic ____ Clay: light-gray to red (mottled), very sandy Sand: fine to coarse-grained, angular, arkosic _____

5

185

25

210

7

217

18

235

In Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, arkosic; some clay,

red, micaceous ___

68

303

Sand: fine to coarse-grained, angular, arkosic; interbedded

clay (or kaolin), white to red (mottled), micaceous, sandy

102

405

Clay: gray to brick-red, micaceous, sandy_________________________

25

430

Sand: fine to coarse-grained, angular, arkosic; interbedded

thin stringers of clay (or kaolin), gray to red (mottled),

micaceous, sandy ___

______________________________ _

71

501

Summary:

Paleocene (Clayton formation)___

___________________________ 20

20

Upper Cretaceous (Providence sand)---------------------------------------------------- 72

92

Upper Cretaceous (Ripley and Cusseta, undifferentiated) ________

88

180

Upper Cretaceous (Blufftown and Eutaw, undifferentiated) ___

55

235

In Upper Cretaceous (Tuscaloosa formation) __________________________ _

266

501

Potential Water-Bearing Zones:
Sand: fine to coarse-grained_____ Sand: fine to coarse-grained

67

175

25

210

318

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Sand: fine to coarse-grained_______ -------------------------------------------------------

13

Sand: fine to coarse-grained____________________________________________________________________ 92

Sand: fine to coarse-grained__________________________________________________________

47

Sand: fine to coarse-grained____________________________________________________

37

Sand: fine to coarse-grained_____

________________

25

Depth (feet)
230 337 405 467 495

Location: 1.5 mi. east of Offerman, Land Lot 329, 4th Land District
Owner: No. 1 Adams-McCaskill Driller: W. B. Hinton Drilled: May 1938

PIERCE COUNTY
Well No.: GGS 119 Elev.: 75

Thickness Depth

(feet)

(feet)

No samples __

120

120

In Miocene (Undifferentiated):

Sand: fine to coarse-grained; limestone, white, rather dense

(much calcitized), sandy, phosphatic __ ________ __________ _

360

480

Sand and limestone: as above; dolomitic limestone, light-

brown, saccharoidal

105

585

Oligocene (Undifferentiated):

Sand and limestone: as above with more limestone at depth,

light-gray to white at depth, much calcitized, nodular, sac-

charoidal, fossiliferous (macroshells and Foraminifera) ____

15

600

Quinqueloculina sp. at 585-600.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white to cream, sandier more calcitized and dolo-

mitized at depth, fossiliferous (bryozoan and echinoid re-

mains, some macroshells, and Foraminifera) _ _________ __________ 265

865

Bryozoan remains prominent at 600-630.

Came1ina sp. at 675-690. Operculinoides floridensis, Lepidocyclina sp. at 690-705. Asterocyclina nassatwnsis at 705-720. Gypsina globula, Pseudophragmina flintensis at 720-735. Camerina striatoreticulata common at 735-750. Operculina mariannensis at 765-780.

Limestone as above but much sandier at 780-810.

Limestone as above but more dolomitized with depth at 810865.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

319

Middle Eocene: Claiborne Group (Undifferentiated):

Thickness (feet)

Depth (feet)

Sand: fine to coarse-grained, phosphatic; dolomitic limestone,

as above __________________

135

1,000

Limestone: light-gray, massive, dense, much calcitized, some-

what sandy, cherty (at certain horizons), fossiliferous

(fragments and molds of macroshells, a coquina at certain

horizons, bryozoan remains, and Foraminifera)

200

1,200

Asterocyclina monticellensis at 1085-1100. Lepidocyclina (Polylepidina) antillea at 1100-1115. Bryozoan remains prominent at 1115-1130.

Dolomitic limestone: brown, saccharoidal; interbedded limestone, as above________________________________________________________ ___________________________ 170

1,370

Limestone: cream, poorly consolidated, granular, somewhat

calcitized, cherty and gypsiferous at certain horizons, fos-

siliferous (some Foraminifera at certain levels)

390

1,760

Operculinoides sp., Asterocyclina sp. prominent at 1490-1505.

Dolomitic limestone: light-gray, saccharoidal, gypsiferous

120

Sand: fine to coarse-grained, phosphatic

15

Limestone: cream, granular, somewhat calcitized, coarsely

glauconitic, dolomitized at certain horizons, fossiliferous

(abundant bryozoan remains) ; interbedded sand, fine to

medium-grained, phosphatic __ ___ ___ __

______________ 75

Clay: yellowish-green, fissile, silty, micaceous

85

Marginulina sp. at 2000-2015. Cibicides tallahattensis at 2015-2030.

1,880 1,895
1,970 2,055

Lower Eocene: Wilcox Group (Undifferentiated):

Limestone: light-gray, sandy, coarsely glauconitic

30

Marl: dark-gray, fissile, sandy, glauconitic, micaceous, pyritiferous, fossiliferous (Foraminifera) ___________________________________________ 35

Limestone: white, sandy, coarsely glauconitic, fossiliferous (fragments and molds of macroshells) __________ ----------------------------- 15

Sand: fine to coarse-grained, sub angular, phosphatic__________

90

Eponides dorfi, Valvulineria wilcoxensis at 2090-2105. Alabamina wilcoxensis at 2120-2135.

2,085 2,120 2,135 2,225

320

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Palocene: Midway Group: Clayton Formation:

Thickness (feet)

Limestone: white, dense, much calcitized and crystalline, fos-

siliferous (macroshells, bryozoan remains, Ostracods, and

some Foraminifera) ; interbedded clay, dark-gray to black,

fissile, carbonaceous, micaceous (fine 1y disseminated

flakes), fossiliferous, (some Foraminifera)

75

Indurated sand: dark-gray to brown, fine-grained, phosphatic,

glauconitic, micaceous, fossiliferous (macroshells, Ostra-

cods, and Foraminifera at certain levels); interbedded

marl, brown to dark-gray, silty, glauconitic, micaceous, fos-

siliferous (Foraminifera at various levels)

420

Discorbis -midwayensis var. at 2300-2315. Eponides lotus at 2322-2330. Va,ginulina longiforma at 2390-2405.

Depth (feet)
2,300
2,720

Upper Cretaceous: Post Tuscaloosa (Undifferentiated):

Marl: dark-brown to bluish-gray, sandy, micaceous, pyriti-

ferous, glauconitic, fossiliferous (macroshells, Ostracods,

and Foraminifera)

____________ _

495

Globotruncana sp. at 2720-2735. Globotruncana sp., Guembelina sp., Gaudryina sp. at 27502765.

Marl: brown, fissile, silty, glauconitic, carbonaceous, mica" ceous, fossiliferous (macro- and microfossils) ____ ____________________ 525

Plamtlina cf. P. texana, Globorotalia micheliniana at 33803395. Planulina taylorensis at 3455-3470. Kyphopyxa christneri at 3560-3575. Vaginulina texana at 3695-3710.

Sand: fine to coarse-grained, phosphatic, indurated at cer-

tain horizons; interbedded marl, as above

135

3,215 3,740 3,875

Tuscaloosa Formation:

Clay: gray to dark-green, fissile, sandy, finely micaceous,

somewhat iron-stained; interbedded sand, fine to coarse-

grained __

75

Sand: fine to coarse-grained; interbedded clay, as above

255

Siderite nodules prominent at 3965-3980.

Sand: fine to medium-grained, somewhat indurated, finely glauconitic, micaceous, fossiliferous (macroshells) _________________ 41

3,950 4,205
4,246

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

321

Lower Cretaceous (?) (Undifferentiated) :

Thickness (feet)

Sand: fine-grained, highly micaceous; interbedded clay, green

to red, sandy, micaceous

_______________

___________________ 102

Depth (feet)
4,348

Basement Complex (Undifferentiated): Crystalline rock

27 4,375

Summary:

No samples ________

120

In Miocene (undifferentiated)

465

Oligocene (undifferentiated) ____ _

15

Upper Eocene (Ocala limestone)

265

Middle Eocene (Claiborne group, undifferentiated) - ---- ______ 1,190

Lower Eocene (Wilcox group, undifferentiated)

170

Paleocene (Clayton formation) ______

--------------- 495

Upper Cretaceous (post-Tuscaloosa, undifferentiated)

--- ____ 1,155

Upper Cretaceous (Tuscaloosa formation)

371

Lower Cretaceous(?) (undifferentiated)

102

Basement complex (undifferentiated)

27

120 585 600 865 2,055 2,225 2,720 3,875 4,246 4,348 4,375

Potential Water-Bearing Zones:
Limestone _______________ __ __ Sand: fine to coarse-grained _ Limestone ------------------------------------Sand: fine to coarse-grained _

220

820

135 1,000

200 1,200

65 2,200

Location: 2.3 mi. northeast of Offerman, Land Lot 332, 4th Land District
Owner : No. 1 Donald Clark Driller: W. B. Hinton Drilled: May 1939

PIERCE COUNTY
Well No.: GGS 120 Elev.: 75

Thickness Depth

(feet)

(feet)

Summary:

No samples ------------------------------------------------------------------------------------------------ 111

In Miocene (undifferentiated) _____ _ _-------------------------------------------- 539

Oligocene (undifferentiated)

___ -------------------- 51

Upper Eocene (Ocala limestone) -------------------------------- ------------------------- 174 Middle Eocene (Claiborne group, undifferentiated) _____________________ 1,220

Lower Eocene (Wilcox group, undifferentiated) _______________________ 290

111 650 701 875 2,095 2,385

322

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Paleocene (Clayton formation) ________________________ Cretaceous (undifferentiated) _____ ______________
First observed Globotruncana sp. at 2747-2778. First observed Anomalina henbesti at 3322-3353. First observed Planulina texana at 3414-3444. First observed Kyphopyxa christneri at 3444-3474. First observed V aginulina texana at 3598-3629.
Basement complex (undifferentiated)

Thickness (feet)
365 -- ________ 1,598

Depth (feet)
2,750 4,348

7

4,~55

Remarks: Samples of poor quality. Formational tops noted above are approximate.

Location: In Patterson Owner: No. 1 J. C. Echols Driller: Layne-Atlantic Company Drilled: 1955

PIERCE COUNTY
Well No.: GGS 465 Elev.: 1051

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, finely disseminated phosphatic

grains; interbedded clay, gray to tan to purple (mottled),

sandy ____

-------------------

30

30

Sand: fine to coarse-grained, angular, arkosic _

115

145

In Miocene (Undifferentiated):

Clay: dark-green, sandy, phosphatic; interbedded sand, fine

to coarse-grained __

50

195

Black, phosphatic pebbles prominent at 165-175.

Clay: dark-green, sandy, phosphatic ___

115

310

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic; some limestone, white, dense, much calcitized, sandy__ 20

330

Sand: fine to coarse-grained, phosphatic __

80

410

Limestone: white, dense, much calcitized, sandy, phosphatic;

interbedded sand, fine to coarse-grained, phosphatic; dolo-

mitic limestone, light-brown, saccharoidal, sandy, phos-

phatic; clay, dark-green, sandy, phosphatic _

_______ ______ 80

490

1Average elevation based on Georgia State Highway Maps.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

323

Thickness (feet)

Limestone: white, dense, much calcitized, phosphatic, fossili-

ferous (casts and molds of megafossils)

68

Dolomitic limestone: dark-brown, saccharoidal, sandy, phosphatic, fossiliferous (molds and impressions of megafossils)__ 42

Depth (feet)
558
600

Oligocene (Undifferentiated):

Limestone: cream, recrystallized (much calcitized), nodular,

somewhat oolitic?, fossiliferous (Foraminifera) _________________ 20

620

Dictyoconus2 sp., Quinqueloculina sp. at 600-620.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray to white, extremely dense (much cal-

citized), fossiliferous (echinoid and bryozoan remains and

Foraminifera) __ _

____________________ _

48

668

Operculinoides sp. at 620-640.
Operculinoides ocanalus, Asterocyclina nassauensis, Pseudophragmina flintensis, Gypsina globula, Argyrotheca sp. at 660-668.

Summary:

Pliocene to Recent (undifferentiated) In Miocene (undifferentiated) Oligocene (undifferentiated) __ Upper Eocene (Ocala limestone)

145

145

455

600

20

620

48

668

Potential Water-Bearing Zones:
Sand: fine to coarse-grained ___ Limestone ______________ ---------------------------- __________________________________________________

80

410

68

668

Location: Owner: No. 1 Pierce County Training School Driller: M. M. Gray Drilling Company Drilled: 1956

PIERCE COUNTY Well No.: GGS 516

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, arkosic, with kaolin inclusions

20

20

Clay: light-gray to red (mottled), sandy _

10

30

'Reworked(?) fossil of middle Eocene age.

324

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Sand: very coarse-grained, angular, arkosic; some clay, as above 10

Depth (feet)
40

Miocene (Undifferentiated):

Clay: yellowish-green, sandy, finely disseminated phosphatic

grains

20

60

Sand: fine to coarse-grained, angular, phosphatic, arkosic.

10

70

Clay: yellowish-green, sandy

10

80

Sand: fine to coarse-grained, arkosic

50

130

Black, phosphatic pebbles prominent at 120-130.

Clay: dark-green, sandy, phosphatic

50

180

Sand: fjne to coarse-grained, phosphatic

100

280

Clay: dark-green, sandy, phosphatic _

100

380

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic; interbedded sand, fine to coarse-grained, phos-

phatic; clay, dark-green, sandy, phosphatic _

80

460

Dolomitic limestone: as above

40

500

Oligocene (Undifferentiated):

Limestone: cream, dense (much calcitized), fossiliferous

(molluscan remains and abundant Foraminifera)

145

645

Dictyoconus1 sp. and abundant fossils belonging to the family Miliolidae at 500-510.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) ______ _ Oligocene (undifferentiated) _____

40

40

460

500

145

645

Potential Water-Bearing Zones:

Sand: fine to coarse-grained ---------------------------------------------------- ____

50

130

Sand: fine to coarse-grained -----------------------------------------------------

100

280

Limestone ________ ----------------------------------------------------------------------------------------- 145

645

'Reworked ( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

325

PULASKI COUNTY

Location: Near east end of bridge over Ocmulgee River, 34 yd. northeast of R.R., 40 ft. southwest of dwelling in Hartford
Owner: No. 1 J. D. Lytle Driller: H.'IIB. Truluck Drilled: September 1951

Well No.: GGS 237 Elev.: 230

Thickness Depth

(feet)

(feet)

Residuum:

Sand: fine to coarse-grained, argillaceous, brick-red, cherty,

and fragments of residual limestone ____ __________ _____

40

40

Upper Eocene: Jackson Group: Cooper Marl:

Marl: cream, very sandy, fossiliferous (echinoid and bryozoan

remains and Foraminifera)__

__ _ __ _________ _________________ 10

50

Robulus alato-limbatus, Eponides jacksonensis, Planulina cooperensis at 40-50.

Barnwell Formation:

Limestone: gray, rather crystalline and saccharoidal, coarse-

ly glauconitic; some marl, silty, carbonaceous

10

60

Marl: gray, silty, carbonaceous, somewhat indurated, fos-

siliferous (Foraminifera) ___

_______ ____________ 30

90

Limestone: gray, fossiliferous (abundant bryozoan remains

and Foraminifera at depth) _ ___ ______ __

40

130

Operculinoides sp., Asterocyclina sp. at 100-110.

Sand: fine to coarse-grained, angular

30

160

Summary:

Residuum _____

_______________________________________

Upper Eocene (Cooper marl) Upper Eocene (Barnwell formation) ________

40

40

10

50

110

160

Potential Water-Bearing Zones:
Limestone Sand: fine to coarse-grained __

40

130

30

160

326

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

PULASKI COUNTY

Location: 0.35 mi. east of Ocmulgee River, 150 ft. south of R.R., 40 ft. south of dwelling in Hartford
Owner: No.1 Fred E. Thompson Driller: H. B. Truluck Drilled: September 1951

Well No.: GGS 238 Elev.: 239

Thickness Depth

(feet)

(feet)

Residuum:

Sand: fine to coarse-grained, argillaceous, brick-red, limo-

nitic, cherty, and fragments of residual limestone

50

50

Rotalia mexicana var. at 20-30.

Upper Eocene: Jackson Group: Cooper Marl:

Marl: cream, very sandy, fossiliferous (echinoid and bryozoan

remains and Foraminifera)

10

60

Eponides jacksonensis, Eponides cocoaensis, Planulina cooperensis at 50-60.

Barnwell Formation:

Marl: gray, silty, fossiliferous (echinoid and bryozoan re-

mains and Foraminifera); with thin beds of limestone ...

40

100

Limestone: gray, rather porous, fossiliferous (megafossils,

echinoid and bryozoan remains and Foraminifera)

40

140

Abundant echinoid and bryozoan remains at 100-110. Robulus limbosus var., Gypsina globula at 110-120. Operculinoides sp., Lepidocyclina sp. at 120-130. Eponides jacksonensis, Operculina mariannensis at 130-140.

Sand: fine to coarse-grained, angular

10

150

Summary: Residuum Upper Eocene (Cooper marl) Upper Eocene (Barnwell formation)
Potential Water-Bearing Zones: Limestone Sand: fine to coarse-grained

50

50

10

60

90

150

40

140

10

150

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

327

PULASKI COUNTY

Location: 2 mi. northwest of Hawkinsville city limits, north side of U.S. Highway 341
Owner: No. 1 T. M. Linder Driller: H. B. Truluck Drilled: 1951

Well No.: GGS 242 Elev.: 321

Thickness Depth

(feet)

(feet)

Residuum:

Clay: mottled, sandy, limonitic, and fragments of residual

limestone __ __________ _________________________ __ ________ _____________________ _________________ 85

85

Rotalia mexicana var., Quinqueloculina sp. at 0-10.

Upper Eocene: Jackson Group: Cooper Marl:

Marl: gray, silty, fossiliferous (echinoid and bryozoan re-

mains and some Foraminifera)

25

110

Valvulineria jacksonensis at 90-100.

Residuum _____ Upper Eocene (Cooper inarl)

Summary:

85

85

25

110

Potential Water-Bearing Zones:
None observed to total depth (110). However, aquifers may be found beneath this well at various levels below 110.

PULASKI COUNTY

Location: South side of junction of Highways 341 and Well No.: GGS 256

129, 100 yd. west of historical marker in Hartford

Elev.: 235

Owner: No.1 Harry Cravey

Driller: H. B. Truluck

Thickness Depth

(feet)

(feet)

-----~-------

Residuum:

Sand: fine to coarse-grained, argillaceous, limonitic, cherty,

and scattered fragments of residual limestone

30

30

Upper Eocene: Jackson Group: Cooper Marl:

Marl: cream, very sandy, fossiliferous (Foraminifera)

20

50

Bulimina jacksonensis, Eponides jacksonensis, Planulina cooperensis at 30-40.

328

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Barnwell Formation:

Thickness (feet)

Marl: gray, silty, fossiliferous (echinoid and bryozoan re-

mains, and Foraminifera); interbedded limestone, cream,

glauconitic

_________________ _

60

Textularia hockleyensis at 90-100.

Limestone: cream, fossiliferous (echinoid and bryozoan re-

mains and Foraminifera)

30

Abundant bryozoan remains at 110-120. Lepidocyclina sp. at 130-140.

Sand: fine to coarse-grained, angular _

10

Depth (feet)
110
140
150

Summary:
Residuum ________________________________________ Upper Eocene (Cooper marl) ____ Upper Eocene (Barnwell formation) __

30

30

20

50

100

150

Potential Water-Bearing Zones:
Limestone ________ Sand: fine to coarse-grained _

30

140

10

150

PULASKI COUNTY

Location: Near Ocmulgee River in Hawkinsville

Well No.: GGS 339

Owner: No. 1 Opelika Mfg. Company

Elev.: 245

Driller: Virginia Supply and Well Company

Drilled: March 1953

Thickne Depth
-------------------------------------------------(-fe-et-) (feet)

Residuum:

Sand: fine to coarse-grained, subangular, limonitic ________________ _ 5

5

Clay: brown to olive-green, somewhat mottled, sandy, limo-

nitic; fragments of residual limestone, yellow, much leach-

ed, sandy, fossiliferous (some Foraminifera)

20

25

Quinqueloculina sp., Rotalia mexicana var., Asterigerina subacuta at 5-25.

Upper Eocene: Jackson Group: Cooper Marl:

Sand: fine to coarse-grained, subangular, coarsely glauco-

nitic, fossiliferous (some Foraminifera) ___ _

5

30

Reussella eocena, Bulimina jacksonensis at 25-30.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

329

Thickness (feet)
Limestone (or indurated sand?): white to yellow, abundantly arenaceous, fossiliferous (some Foraminifera) ________________________ 15
Lepidocyclina sp., Alabamina atlantisae, Cibicides sp. at 30-45.

Depth (feet)
45

Barnwell Formation:

Marl: light-gray, sandy, glauconitic, fossiliferous (carrying

bryozoan and echinoid remains, Ostracods, and Foramini-

fera) ; interbedded limestone, light-gray, much calcitized,

crystalline, sandy, glauconitic, fossiliferous (fragments and

molds of megafossils) _

__ _________________________

56

101

Textularia hockleyensis, Robulus alato-limbatus, Dentalina jacksonensis, N onion advena, Discorbis assulata, Discorbis cf. D. subaraucana, Nodosaria fissicostata, Guttulina irregularis, Sigmomorphina jacksonensis, Valvulineria jacksonensis, Cibicides danvillensis, Planulina cocoaensis at 45-55.

Limestone: gray, crystalline, somewhat saccharoidal, fossili-

ferous (macroshells, echinoid and abundant bryozoan re-

mains, and Foraminifera)

______________ __________ _________________ 39

140

Gypsina globula, Lepidocyclina sp., Asterocyclina sp., Operculina mariannensis at 120-140.

Sand: medium to coarse-grained

10

150

Middle Eocene: Claiborne Group: Lisbon Formation:

Marl: gray, silty, fossiliferous (macroshells and Foramini-

fera) ; interbedded sand, fine to coarse-grained, angular,

glauconitic, at depth, fossiliferous (macroshell coquina)

109

259

Cibicides westi at 172-175.

lVIacroshells common at 187-207.

Glauconite prominent at 231-247.

Limestone: gray, dense, crystalline, sandy, glauconitic, inter-

bedded marI as above __ ____ ___ _______________________________________________________ 20

279

Pink, sericitic clay prominent at 259-265.

Tallahatta Formation:

Clay: dark-brown, somewhat fissile, glauconitic, lignitic; in-

terbedded sand, fine to coarse-grained _-------------------------------------- 40

319

330

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:
Residuum -------------------------------- --------------------------------Upper Eocene (Cooper marl) ____________________ Upper Eocene (Barnwell formation) Middle Eocene (Lisbon formation) _____ Middle Eocene (Tallahatta formation) _

Thickness Depth

(feet)

(feet)

25

25

20

45

105

150

129

279

40

319

Potential Water-Bearing Zones:

Limestone ______________________

------------------------------------------------

Sand: medium to coarse-grained _____

______________ _

Sand: fine to coarse-grained __

Sand: fine to coarse-grained _____________

Sand: fine to coarse-grained ____________________________

39

140

10

150

13

220

16

247

31

316

Remarks:
Limestones belonging to the Claiborne group are too dense and nonporous to constitute good water-bearing fo:r;mations.
The more productive water-bearing sands for the area lie below the total depth (319) penetrated by this well. Such aquifers are of Upper Cretaceous age.

PULASKI COUNTY

Location: 4 mi. south of Pulaski-Bleckley County line, east side of U.S. Highway 26, Land Lot 306, 21st Land District
Owner: No. 1 E. H. Tripp Driller: Ainsworth, Inc. Drilled: October 1954

Well No.: GGS 472 Elev.: 280

Thickness Depth

(feet)

(feet)

Residuum:

Clay: mottled, very sandy, limonitic, and fragments of resi-

dual limestone (at depth)

____________ _

80

80

Rotalia mexicana var. at 70-80.

Oligocene (Undifferentiated):

Limestone: yellow, nodular, somewhat iron-stained, leached,

cherty, fossiliferous (echinoid and frequent bryozoan re-

mains, and some Foraminifera) _

20

100

Asterigerina sp., Eponides byramensis at 100-110.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

331

Upper Eocene: Jackson Group: Cooper Marl:

Thickness (feet)

Limestone: cream, granular, loosely consolidated (gray,

dense, somewhat saccharoidal, sandy, coarsely gla'Uconitic at

depth), fossiliferous (echinoid and bryozoan remains, Os-

tracods, and Foraminifera)

_______________ _ 15

Depth (feet)
115

Bulimina jacksonensis, Uvigerina jacksonensis, Uvigerina topilensis, Spiroplectammina mississippiensis var., Cibicides lobatulus at 110-120.

Indurated sand: fine-grained, angular, fossiliferous (casts

and molds of megafossils)

_______________ _ 20

135

Barnwell Formation:

Marl: gray, silty, somewhat indurated, carbonaceous, fossili-

ferous (echinoid and bryozoan remains, Ostracods and

Foraminifera) _______________________________________________________

40

175

Nonion advena, Valvulineria jacksonensis at 150-160.

Limestone: gray, dense, coarsely glauconitic, sandy, fossili-

ferous (casts and molds of megafossils, echinoid and abun-

dant bryozoan remains)

_______________________ __________________ 35

210

Limestone: cream, porous, coarsely glauconitic, sandier with

depth, fossiliferous (echinoid and abundant bryozoan re-

mains, and Foraminifera)___ _________________________________________________ 45

255

Operculina mariannensis, Lepidocyclina ocalana at 210-220. Asterocyclina na.ssauensis, Camerina striatoreticulata at 220-230.

Middle Eocene: Claiborne Group: Lisbon Formation:

Marl: gray to dark-green, somewhat indurated, carbonaceous,

micaceous, glauconitic (finely disseminated) ; interbedded

limestone, gray, dense, sandy, glauconitic (finely dissemi-

nated) ; sand, fine to coarse-grained, angular, fossiliferous

(a coquina)

__________ ---- ----------- --- ---- -

125

380

Macroshells prominent at 255-280.

Nonion advena, Gryoidina soldanii var., Cibicides danvillensis, Cibicides americanus var., Cibicides pseudoungerianus var. lisbonensis, Cibicides mississippiensis, Cibicides westi at 280-290.

Pink sericitic clay prominent at 360-370.

332

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Tallahatta Formation:

Thickness (feet)

Marl: dark-green, sandy, coarsely glauconitic, pyritiferous,

fossiliferous (macroshells, Ostracods and Foraminifera)

70

Cibicides blanpiedi, Cibicides tallahattensis at 390-400.
Asterocyclina monticellensis, Cibicides pseudoungerianus var. lisbonensis, Cibicides blanpiedi, Cibicides tallahattensis at 400-410.

Depth (feet)
450

Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):

Sand: fine to medium-grained, angular, sideritic, lignitic; in-

terbedded clay, black, carbonaceous, micaceous_

35

Sideritic nodules abundant at 450-460.

Sand: coarse-grained, angular, arkosic, sideritic, pyritiferous,

lignitic; interbedded kaolin, white to red (mottled), mica-

ceous ___________________________________________

305

Pink kaolin prominent at 680-700.

Clay: dark-gray to black, micaceous, carbonaceous

145

Limestone, gray, dense, crystalline, sandy, glauconitic, macroshells prominent at 840-855.

Clay: dark-brown, silty, carbonaceous, highly micaceous

20

Sand: coarse-grained, angular, arkosic; interbedded clay, dark-brown, silty, carbonaceous, highly micaceous __ _______________ 195

Clay: dark-brown, silty, carbonaceous, very micaceous, fos-

siliferous (casts of megafossils); sand ______ _____________ __

50

Sand: coarse-grained, angular, arkosic; interbedded clay,

dark-brown, silty, carbonaceous, very micaceous

170

485
790 935
955 1,150 1,200 1,370

In Tuscaloosa Formation:

Sand: fine to coarse-grained, arkosic, rather massive; inter-

bedded clay, yellowish-green, sandy, somewhat carbona-

ceous, micaceous

140

Sand: fine to coarse-grained, angular, arkosic; interbedded

clay, yellowish-green, red to purple at depth, somewhat

carbonaceous, sandy, micaceous ____

650

1,510 2,160

In Lower Cretaceous (? )

Sand: very coarse-grained, angular, extremely arkosic; in-

terbedded clay, olive-green to tan to brick-red, very mica-

ceous, sandy ___

328

2,487

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

333

Summary:

Thickness Depth

(feet)

(feet)

Residuum

- ---------- -

-------------- --------------------------- 80

Oligocene (undifferentiated)

------------------------------------------ 20

Upper Eocene (Cooper marl) ---------------------------------------------------------------- 35

Upper Eocene (Barnwell formation) -------------------------------------------- _____ 120

Middle Eocene (Lisbon formation) ---------------------------------------------

125

Middle Eocene (Tallahatta formation) -------------------------------------------

70

Upper Cretaceous (post-Tuscaloosa, undifferentiated)____________________ 920

In Upper Cretaceous (Tuscaloosa formation) ---------------------------------- 790

In Lower Cretaceous (?) ____

328

80 100 135 255 380 450 1,370 2,160 2 2,488

Potential Water-Bearing Zones:

Limestone

----------------- --------------------------------------------------------------- 80

Sand: coarse-grained

---------------------------------------------------------------- 250

Sand: coarse-grained ------------------------------------------------------------------------------ 200

Sand: fine to coarse-grained ----------------------------------------------------------------- 140

255 790 1,150 1,510

Location: 0.9 mi. east of road intersection in Georgetown, 0.4 mi. east of junction of Highways 27 and 50, north side of Highway 50 at school house
Owner: No. 1 Kaigler School Driller: Gray Artesian Well Company Drilled: May 1955

QUITMAN COUNTY
Well No.: GGS 436 Elev.: 341

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Clay: mottled, sandy

11

11

Sand: fine to medium-grained, coarser-grained at depth,

angular; some clay, as above

------------------------

31

42

Sand: fine to coarse-grained, angular; some clay, tan, sandy,

micaceous

9

51

Gravel: pea-size grains, subrounded

5

56

Upper Cretaceous: Providence Sand:

Marl: dark bluish-gray, sandy, micaceous, fossiliferous at

depth (macroshells, Ostracods and Foraminifera)

39

95

Anomalina pseudopapillosa at 72-82.

1This well reportedly penetrated the Basement complex. Samples in our collection reached a total depth of 2488.

334

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Indurated sand (or sandy limestone): gray, fine-grained, dense ----------------------------------------------------------------------------------------------------- 3

Marl: dark bluish-gray, sandy, micaceous

13

Indurated sand (or sandy limestone): as above _

2

Marl: dark-gray, silty, micaceous, pyritiferous

79

Depth (feet)
98 111 113 192

Ripley Formation:

Marl: dark bluish-gray, silty, micaceous, pyritiferous, glau-

conitic, fossiliferous (at certain horizons, macroshells,

Ostracods and Foraminifera) _____

203

395

Gaudryina rudita, Cibicides harperi at 212-232.

Summary:
Pliocene to Recent (undifferentiated) Upper Cretaceous (Providence sand) Upper Cretaceous (Ripley formation)

56

56

136

192

203

395

Potential Water-Bearing Zones: None observed to total depth of well.

Remarks:
Owing to scarcity of water-bearing sands, this well is in an area in which it is difficult to obtain ground water. It is doubtful that the shallow-lying terrace gravels would be perennially productive. Moreover, the indurated sand (or sandy limestone) at depths 95-98 and 111-113 are not thought to be of sufficient thickness to carry water in sufficient quantity to satisfy even domestic needs. The best aquifers, therefore, should be sought at considerably lower depths than that reached by this well. Such water-bearing sands would be encountered in the underlying Eutaw formation and in the more deeply buried Tuscaloosa formation.

Location: In Georgetown Owner: No. 1 City of Georgetown Driller: Layne-Atlantic Company Drilled: October 1956

QUITMAN COUNTY
Well No.: GGS 502 Elev.: 316

Thickness Depth

(feet)

(feet)

Upper Cretaceous: Providence and Ripley Formations (Undifferentiated):
Marl: dark bluish-gray to black, sandy, micaceous, pyritiferous, glauconitic, fossiliferous (macroshells, Ostracods,

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

335

Thickness (feet)

and Foraminifera at certain levels); interbedded indurated

sand (or sandstone), dark-gray, argillaceous, micaceous,

pyritiferous, glauconitic, fossiliferous (macroshells at cer-

tain horizons) ______ __ __

___________ _____ _________ _____ ________ 350

Anomalina pseudopapillosa at 115-125.
Epistomina ea1acolla, Cibieides harperi at 125-135. Globotruncana cretacea, Loxostoma plaitum, Planulina correcta at 208-218. Clavulinoides t1-ilate1a var., Robulus navarroensis, Robulus pondi at 235-246.

Marl: dark-gray to brownish at depth, micaceous, somewhat

carbonaceous (lignitic), sandy, fossiliferous (macroshells,

Ostracods, and Foraminifera at certain levels) _______________

90

Planulina taylorensis at 350-360.

Depth (feet)
350
440

Cusseta Sand:

Sand: fine to coarse-grained, subangular, indurated at cer-

tain levels, micaceous; interbedded marl (or shale), as above __ 75

515

Blufftown Formation:

Shale: dark-brown, fissile, splintery at depth, carbonaceous,

micaceous, fossiliferous (macroshells, Ostracods, and Fora-

minifera at certain levels) __ _______________________________________

525

Vaginulina texana, Kyphopyxa christneri at 525-535.

Sand: fine to medium-grained, subangular, somewhat in-

durated at certain levels, micaceous, glauconitic, phos-

phatic, fossiliferous (macroshells, Ostracods at certain

levels)

________________ --------------------- ------ ------ ---- 70

Sand: fine to coarse-grained, subangular, pyritiferous, glau-

conitic, phosphatic, fossiliferous at certain levels (coquina

and occasional fish teeth) ; fairly numerous thin stringers

of shale, as above

128

1,040 1,110 1,238

In Eutaw Formation:

Shale: yellowish-green to dark-brown to black, fissile, somewhat splintery, micaceous, carbonaceous; interbedded sand, fine to medium-grained, subangular, phosphatic, micaceous__ 87

Sand: fine to medium-grained, subangular

35

1,325 1,360

Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, arkosic, micaceous;

interbedded clay, greenish-gray, somewhat fissile, sandy,

micaceous, iron-stained at certain levels

140

1,500

336

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:
Upper Cretaceous (Providence and Ripley, undifferentiated) Upper Cretaceous (Cusseta sand) ________________________________________ Upper Cretaceous (Blufftown formation) In Upper Cretaceous (Eutaw formation) ___ Upper Cretaceous (Tuscaloosa formation)

Thickness Depth

(feet)

(feet)

440

440

75

515

723 1,238

122 1,360

140 1,500

Potential Water-Bearing Zones:

Sand: fine to medium-grained __

Sand: fine to coarse-grained __

Sand: fine to coarse-grained

______________ _

Sand: fine to coarse-grained ________________________

Sand: fine to coarse-grained _________________________

34

------------------- 13

-----------------

9

24

--------------- 13

1,360 1,377 1,404 1,434 1,460

Location: In Cuthbert Owner: City of Cuthbert Driller: Layne-Atlantic Company Drilled: 1958

RANDOLPH COUNTY
Well No.: GGS 552 Elev.: 460

Thickness Depth

(feet)

(feet)

Middle Eocene: Claiborne Group (Undifferentiated):

Sand: fine to coarse-grained, angular, argillaceous, brick-red,

limonitic, sparsely glauconitic -------------------------------------------------------- 44

44

Sand: as above; some clay, yellowish-green, sandy, micaceous ___ . 20

64

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: light-gray, silty, micaceous, carbonaceous

82

146

Sand: fine to medium-grained, subangular, abundantly glau-

conitic

10

156

Paleocene: Midway Group: Clayton Formation:

Sand: fine to coarse-grained, subangular, pale-green quartz

grains; interbedded clay, black, somewhat fissile, carbona-

ceous, micaceous ___ ---------------------------------------------------------------------------- 81

237

Limestone: gray, dense, nodular, somewhat sandy, pyritifer-

ous, fossiliferous (fragments, casts and molds of mega-

fossils, bryozoan remains, and Foraminifera) -------------------------- 73

310

Limestone: as above but very sandy _

21

331

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

337

Upper Cretaceous: Providence Sand:

Thickness (feet)

Sand: fine to coarse-grained, somewhat angular

7

Marl: bluish-gray, silty, chalky, micaceous, pyritiferous, fos-

siliferous (some Foraminifera) ________ _____ _____________________

13

Anomalina pseudopapillosa, Epistomina caracolla at 338346.

Summary:

Middle Eocene (Claiborne group, undifferentiated)

64

Lower Eocene (Wilcox group, undifferentiated) ___

92

Paleocene (Clayton formation) _______________________________

175

Upper Cretaceous (Providence sand) ____________________________________

20

Depth (feet)
338
351
64 156 331 351

Potential Water-Bearing Zones:
Sand: fine to coarse-grained ___ Limestone ______________ Sand : fine to coarse-grained ____ ________ ____________ ____________________

91

237

73

310

7

338

Location: Augusta Owner: No. 1 Georgia Training School (Circular
Court) Driller: Virginia Machine and Well Company Drilled: February 1940

RICHMOND COUNTY
Well No.: GGS 129 Elev.: 136

Thickness Depth

(feet)

(feet)

No samples

9

9

In Upper Cretaceous: Tuscaloosa Formation:

Kaolin: white, micaceous, sandy; interbedded sand, fine to

coarse-grained, angular, arkosic ________________ ---------------------------------- 131

140

Sand: medium to coarse-grained, angular, arkosic, with in-

clusions of kaolin (clay balls) ---------------------------------------------

18

158

Kaolin: yellow to white, micaceous, very sandy, limonitic

4

162

Brown limonitic pellets prominent at 160-162.

Basement Complex (Undifferentiated):

Clay: bluish-gray, sandy, highly micaceous

13

175

Crystalline rock _____ ---------------------------------------------------------------------------- 154

329

338

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Thickness Depth

(feet)

(feet)

No samples ------------------------- ------------------------------------------------------------------- 9

9

In Upper Cretaceous (Tuscaloosa formation) ----------------------------------- 153

162

Basement complex (undifferentiated)

-------------------------------- 167

329

Potential Water-Bearing Zones:
Sand: medium to coarse-grained ____ Fractures and voids in Basement complex __ _

18

158

154

329

Location: Augusta Owner: No. 2, Georgia Training School (Circular
Court) Driller: Virginia Machine and Well Company Drilled: May 1940

RICHMOND COUNTY
Well No.: GGS 130 Elev.: 136

Thickness Depth

(feet)

(feet)

Upper Cretaceous: Tuscaloosa Formation:

Sand: fine to coarse-grained, brown, argillaceous, arkosic ________ 10

Kaolin: gray to cream, micaceous

15

Kaolin: brick-red, micaceous, very sandy, limonitic ___________________ 25

Kaolin: gray to pink, micaceous, sandy ____ _

45

Kaolin: white to gray to yellow, micaceous _

40

Sand: fine to medium-grained, angular with inclusions of kaolin (clay balls) __________________________ ----------------------------------------------- 10

Kaolin: gray to yellow to tan to red, micaceous, sandy ____

50

Sand: fine to coarse-grained, angular, with inclusions of

kaolin (clay balls)

_____ ___________ ------------------------------- 20

Kaolin: white to gray to yellow to pink, very sandy, micaceous__ 80

Sand: fine to coarse-grained, angular, arkosic

10

Basement Complex (Undifferentiated):

Clay: olive-green to tan, sandy, highly micaceous ________________________ 20

Clay: as above, but dark bluish-green

5

Crystalline rock __________ ------------------------------------------------------------------------- 870

10 25 50 95 135
145 195
215 295 305
325 330 1,200

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

339

Summary:
Upper Cretaceous (Tuscaloosa formation) Basement complex (undifferentiated)

Thickness Depth

(feet)

(feet)

305

305

895 1,200

Potential Water-Bearing Zones:
Sand: fine to coarse-grained _ ___________________ Sand: fine to coarse-grained ______________________ Fractures and voids in basement complex__

10

215

10

305

870 1,200

Location: At Hotel Bon Aire, Augusta Owner: No. 1 Hotel Bon Aire Driller: Virginia Supply and Well Company Drilled: May 1952

RICHMOND COUNTY
Well No.: GGS 309 Elev.: 330

Thickness Depth

(feet)

(feet)

No samples

15

15

In Upper Eocene: Jackson Group, Barnwell Formation: Clay: light-brown, sandy, micaceous

20

35

Upper Cretaceous: Tuscaloosa Formation:

Kaolin: white, micaceous, very sandy _

25

60

Kaolin: white to gray to brick-red to purple (mottled), mica-

ceous, limonitic _______ _

____________________

60

120

Sand: fine to coarse-grained

10

130

Kaolin: white, micaceous, very sandy

10

140

Sand : fine to coarse-grained _

18

158

Basement Complex (Undifferentiated) 1 : Clay: gray, micaceous Schist: green, chloritic

2

160

320

480

Summary:

No samples ___ ___ __________________________

------------------------------ _______________ 15

15

In upper Eocene (Barnwell formation) ------------------------------------------------ 20

35

Upper Cretaceous (Tuscaloosa formation) ---------------------------------------- 123

158

Basement complex (undifferentiated) ------------------------------------------------ 322

480

'Probably Little River Series of Precambrian ( ?) age.

340

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Potential Water-Bearing Zones:
Sand: fine to coarse-grained ___ Sand: fine to coarse-grained ____ Schist _

Thickness Depth

(feet)

(feet)

10

130

18

158

100

260

Location: Silver Crest and Fleming Heights, Gracewood
Owner: No. 1 Silver Crest School Driller: Virginia Supply and Well Company Drilled: January 1954

RICHMOND COUNTY
Well No.: GGS 371 Elev.: 272

Thickness Depth

(feet)

(feet)

Upper Eocene: Jackson Group: Barnwell Formation:

Clay: gray to brown to red (mottled), sandy, limonitic

20

20

Clay: as above; inclusions of kaolin, white, micaceous, some-

what sandy ________ ---------------------------------------

10

30

Upper Cretaceous: Tuscaloosa Formation:

Kaolin: white, micaceous, somewhat sandy

10

40

Clay: light-brown, micaceous, rather sandy _

10

50

No samples _______

5

55

Kaolin: white, micaceous, sandy; interbedded sand, fine to

coarse-grained ___________________

_________________________ 180

235

Sand: fine to coarse-grained Kaolin: white, micaceous, sandy ,_______________________ Clay: light-brown, micaceous, very sandy _

15

250

5

255

7

262

Summary:

Upper Eocene (Barnwell formation) -------------------------------------------------- 30

30

Upper Cretaceous (Tuscaloosa formation) ---------------------------------------- 232

262

Potential Water-Bearing Zones:

Sand: fine to coarse-grained ---------------------------------------------------------------- 20

120

Sand: fine to coarse-grained --------------------------------------------------------------- 10

150

Sand: fine to coarse-grained__

____ _______ ______ _____ _____________ __ 15

250

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

341

Location: Hephzibah owner: No.1 City of Hephzibah Driller: Layne-Atlantic Company

RICHMOND COUNTY
Well No. GGS 526 Elev.: 430

Thickness Depth

(feet)

(feet)

Upper Eocene: Jackson Group: Barnwell Formation:

Sand: fine to coarse-grained, angular; some clay, brick-red,

sandy ---------------------------------------------------------------------------------------------------- 15

15

Sand: fine to coarse-grained, angular, arkosic, with inclu-

sions of kaolin; interbedded clay, yellowish-green to tan to

red (somewhat mottled), sandy _

__ ____________

125

140

Upper Cretaceous: Tuscaloosa Formation:

Kaolin: gray to pink, white at depth, micaceous, somewhat

sandy _____________ ____________________

______________________ ________________ 45

185

Kaolin: gray to purple. (mottled), sandy, sandier with depth Sand: coarse-grained, angular, arkosic No samples Sand: coarse-grained, angular, arkosic Sand: as above, inclusions of clay Sand: coarse-grained, angular, arkosic _ Kaolin: cream to red (mottled), micaceous, sandy ______

75

260

15

275

13

288

10

298

12

310

20

330

20

350

Summary:
Upper Eocene (Barnwell formation) _________ _ Upper Cretaceous (Tuscaloosa formation)
Potential Water-Bearing Zones:
Sand: coarse-grained __ _ Sand: coarse-grained _ Sand: coarse-grained _______________________ _

140

140

210

350

15

275

10

298

20

330

342

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: At City Water Works, Ellaville Owner: No. 1 City of Ellaville Driller: Layne-Atlantic Company Drilled: March 1937

SCHLEY COUNTY
Well No.: GGS 75 Elev.: 567

Thickness Depth

(feet)

(feet)

No samples

120

120

In Upper Cretaceous: Providence Sand: Sand: fine to coarse-grained, limonitic No samples _______________________________________

8

128

12

140

In Ripley Formation:

Clay: bluish-gray to black, micaceous; some sand, fine to

coarse-grained

460

600

No samples

110

710

In Blufftown Formation:

Clay: dark-brown, somewhat fissile, silty, highly micaceous,

carbonaceous, pyritiferous, glauconitic and fossiliferous at

depth

_ __________

_________________ 150

860

Vaginulina texana at 800-860.

Summary:

No samples __

120

120

In Upper Cretaceous (Providence sand) __ ______ _

8

128

No samples ____

-------------- 12

140

In Upper Cretaceous (Ripley formation)_

460

600

No samples ______

__________________

----------------

110

710

In Upper Cretaceous (Blufftown formation) __

150

860

Potential Water-Bearing Zones:
Available samples too fragmentary and sketchy to permit determination of formational tops of water-bearing zones.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

343

Location: Approximately 200ft. east of well drilled in 1937 at City Water Works, Ellaville
Owner: No. 2 City of Ellaville Driller: Layne-Atlantic Company Drilled: July 1948

SCHLEY COUNTY
Well No.: GGS 174 Elev.: 567

Thickness Depth

(feet)

(feet)

Middle and Lower Eocene (Undifferentiated):

Clay: brick-red, very sandy, limonitic; fragments of clay,

dark-gray, silty, lignitic, micaceous; inclusions of kaolin,

white, micaceous ____________

----------------------------------------------- 25

25

Sand: fine to coarse-grained, angular; some clay, as above____

23

48

Sand: as above; some clay, gray to ochre, micaceous_____________________ 30

78

Paleocene: Midway Group: Clayton Formation:

Clay: dark-gray to black, somewhat blocky and indurated, car-

bonaceous, micaceous (finely disseminated), glauconitic at

depth; inclusions of kaolin, white, micaceous (latter prob-

ably "cave" from above)_______________ ________________________________________ 12

90

Robulus cf. R. midwayensis at 90-98.

Limestone: gray, dense, crystalline, sandy, glauconitic at

depth, fossiliferous (fragments and casts and molds of mac-

roshells and bryozoan remains)__ ___

-------------------------------------- 8

98

Upper Cretaceous: Providence Sand:

Kaolin: white to red (mottled), micaceous, and cave from above __ 29

127

Clay: gray to brown, somewhat blocky and indurated, car-

bonaceous, micaceous (finely disseminated), fossiliferous

(some F'oraminifera) ______ _

-------------- _

8

135

Cibicides howelli, Anomalina sp. at 127-135.

Clay: light-gray to tan, somewhat iron-stained, indurated, fis-

sile, micaceous; sand, fine to coarse-grained, angular, and

some cave from above

_____ --------------------- 23

158

Sand: fine to coarse-grained, angular, sideritic; interbedded

kaolin, white to pink (mottled), micaceous

107

265

In Ripley Formation:

Sand: fine to medium-grained, lignitic, sideritic, pyritiferous;

interbedded clay, black, somewhat fissile, micaceous, carbon-

aceous

60

325

344

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Marl: gray to black, micaceous, carbonaceous, pyritiferous, fossiliferous (macroshells, Ostracods, and Foraminifera)________ 125

Robulus stephensoni, Gaudryina rudita, Loxostoma plaitum, Anomalina clementiana, Anomalina pseudopapillosa at 325-350.

No samples __________________

14

Depth (feet)
450
464

In Cusseta(?) Sand:

Sand: fine to coarse-grained, angular, arkosic, limonitic; in-

terbedded marl, as above__________________________________________________________________ 54

518

Sand: fine to coarse-grained, angular, limonitic, sideritic

128

646

Summary:
Middle and lower Eocene (undifferentiated) Paleocene (Clayton formation) __ Upper Cretaceous (Providence sand) ____ In Upper Cretaceous (Ripley formation) _ No samples_____ ----------------------------------------------In Upper Cretaceous (Cusseta (?) sand) _

78

78

20

98

167

265

185

450

14

464

182

646

Potential Water-Bearing Zones:
Sand: fine to coarse-grained Sand: fine to coarse-grained Sand : fine to coarse-grained_

15

190

5

525

71

646

Location: 3.7 mi. south of Ellaville via U.S. Highway 19, 2 mi. east of Highway 19, and 0.25 mi. northeast of LaCrosse
Owner: No. 1 T. Childers Driller: Southeastern Drilling Company Drilled: July 1952

SCHLEY COUNTY
Well No.: GGS 312 Elev.: 527

Thickness Depth

(feet)

(feet)

Middle and Lower Eocene (Undifferentiated):

Clay: brick-red, sandy, limonitic_

10

10

Clay: mottled, sandy, somewhat bauxitic ( ?) _

20

30

Sand: fine to coarse-grained; interbedded clay, yellow to

light-tan, somewhat sandy________

---------------------------------- 35

65

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

345

Thickness (feet)

Sand: fine to coarse-grained; interbedded clay, gray, car-

bonaceous, micaceous ____________ ------------------------------------------------------- 55

Clay: yellow, bauxitic(?)_____ _______________

______________________

5

Depth (feet)
120 125

Paleocene: Midway Group: Clayton Formation:

Clay: gray to black, fissile_________________

10

135

Limestone: gray, dense, crystalline (much calcitized), sandy,

sandier at depth, fossiliferous (macroshells)

35

170

Upper Cretaceous: Providence Sand: Kaolin: white, micaceous, sandy__________________________ Sand: fine to coarse-grained____ Kaolin: mottled, sandy__ Sand: coarse-grained

5

175

35

210

26

236

27

263

Summary:
Middle and lower Eocene (undifferentiated) ____ _ Paleocene (Clayton formation) ____ Upper Cretaceous (Providence sand) _______ _

125

125

45

170

93

263

Potential Water-Bearing Zones:
Sand: fine to coarse-grained____ Sand: coarse-grained ______

35

210

27

263

Location: 0.3 mi. north of Courthouse in Ellaville, 0.25 mi. west of Highway 19 at public swimming pool
Owner: Schley County (Department of Recreation) Driller: Layne-Atlantic Company Drilled: August 1952

SCHLEY COUNTY
Well No.: GGS 315 Elev.: 568

Thickness Depth

(feet)

(feet)

Middle Eocene: Claiborne Group (Undifferentiated):

Clay: yellowish-green to tan to brick-red (mottled), very

sandy, limonitic _

40

40

Sand: medium to coarse-grained, massive, angular_

55

95

346

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Lower Eocene and Paleocene (Undifferentiated):

Thickness (feet)

Clay: brown to olive-green, fissile, greasy appearance, iron-

stained, micaceous, sideritic; blocky clay, black, carbonace-

ous, micaceous (finely disseminated)

,51

Depth (feet)
146

Upper Cretaceous : Providence Sand:

Sand: coarse-grained, angular, arkosic, limonitic; interbedded

clay, dark-green to tan to red (mottled), iron-stained,

greasy appearance, micaceous; inclusions of kaolin, white,

micaceous _

62

208

Summary:
Middle Eocene (Claiborne group, undifferentiated)_ Lower Eocene and Paleocene (undifferentiated)_ Upper Cretaceous (Providence sand) ______

95

95

51

146

62

208

Potential Water-Bearing Zones:
Sand: coarse-grained ____ Sand: coarse-grained ___

9

156

30

192

Samples of poor quality.

Remarks:

Location: Approximately 100 yd. west of Savannah-Atlanta R.R., east side of Municipal Baseball Park, in Sylvania
Owner: No. 3 City of Sylvania Driller: Stevens and Southern Well Drilling Company Drilled: April 1952

SCREVEN COUNTY
Well No.: GGS 295 Elev.: 202

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Sand: fine to coarse-grained, subangular, arkosic; with some

clay, tan to red (mottled), sandy

10

10

Clay: bluish-gray to tan to red (mottled), sandy, micaceous;

sand, fine-grained, with finely disseminated black pebbles

of phosphate ___

____________________ _

10

20

Sand: fine to coarse-grained, subangular, arkosic; some clay,

yellowish-green, sandy _______

______________

105

125

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

347

Thickness (feet)

Limestone: light-gray, dense, very sandy, phosphatic, fossil-

iferous (macroshells) __

9

Depth (feet)
134

Oligocene (Undifferentiated):

Limestone: light-gray to cream at depth, somewhat nodular,

massive, fossiliferous (fragments and molds of molluscan

shells, echinoid and bryozoan remains, Ostracods and Fora-

minifera) ____

86

220

Quinqueloculina sp., Pyrgo sp., Gypsina globula, Asterocyclina1 sp. at 135-140.

Upper Eocene: Jackson Group: Cooper Marl:

Limestone: white, rather soft and chalky, fossiliferous (echi-

noid and bryozoan remains and Foraminifera)_

38

258

Textularia subhauerii, Textularia hannai, Robulus arcuatostriatus var., Siphonina jacksonensis, Eponides jacksonensis, Nonion planatus, Gypsina globula (common) at 225-230.
Textularia adalta, Textularia dibollensis var., Planularia cf. P. truncana, Marginulina cocoaensis, Dentalina jacksonensis, Nodosaria fissicostata, Alaba-mina -mississippiensis, Reussella sculptilis, A ngulogerina ocalana, Cassidulina subglobosa, Cibicides cocoaensis, Cibicides lobatulus, Planulina cocoaensis, and abundant bryozoan remains at 250-255.

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: light-gray, dense, very sandy, sparsely phosphatic,

fossiliferous (macroshells, echinoid and bryozoan remains) __ 10

268

Sand: fine to medium-grained _

22

290

Indurated sand: fine to medium-grained; thin tongues of lime-

stone, gray, dense, sandy, sparsely glauconitic

40

330

Sand: fine to medium-grained; thin stringers of marl, gray,

somewhat sandy

86

416

Sand: fine to coarse~grained_

18

434

Limestone: gray, dense, sandy, glauconitic__

28

462

Sand : fine to coarse-grained ____

13

475

Limestone: gray, dense, sandy, glauconitic_________
-
'Reworked ( ?) fossil of middle Eocene age.

15

490

348

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Thickness (feet)

Miocene (undifferentiated) _ ------------------------------

134

0 ligocene (undifferentiated) _ __ _______________

86

Upper Eocene (Cooper marl) ___________________ _

38

Middle Eocene (Lisbon formation) ______________________________________________________ 232

Depth (feet)
134 220 258 490

Potential Water-Bearing Zones:

Limestone _________

88

25~

Sand: fine to coarse-grained____________________________________________________________________ 18

434

Limestone __________________ --------------------------------------------------------------------------------- 28

462

Location: At Sewage Treatment Plant in Sylvania Owner: City of Sylvania Driller: Layne-Atlantic Company Drilled: February 1955

SCREVEN COUNTY
Well No.: GGS 413 Elev.: 210 1

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Sand: fine to medium-grained, arkosic, finely disseminated

phosphate grains; clay, tan to red (mottled), sandy, limon-

itic ___________________________ -------------------------------------------------

10

10

Clay: bluish-gray to tan to red (mottled), sandy, limonitic_

10

20

Clay: yellowish-green, sandy_______

20

40

Clay: as above, but much sandier

38

78

Sand: fine to coarse-grained; interbedded limestone, light-

gray to white, dense (much calcitized), sandy, phosphatic,

fossiliferous (macroshells) --------------------------------------- __________________ 13

91

Oligocene (Undifferentiated):

Limestone: light-gray, very dense (much calcitized), massive,

nodular, fossiliferous (some echinoid and bryozoan remains

and Foraminifera) --------------------------------------------------------------------------- 5

96

Pyrgo sp., Rotalia mexicana var., Gypsina globula2, Textularia sp., Cibicides pseudoungerianus at 91-96.

Limestone: yellow to white at depth, saccharoidal (highly

calcitized), crystalline, nodular, fossiliferous (as above) __________ 7

103

Dictyoconus2 sp. at 96-103.

'Average elevation based on Georgia State Highway Maps. 'Reworked(?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

349

Thickness (feet)
Limestone: cream, nodular (much calcitized), fossiliferous (as above) ______ ----------------------------------------------------------------------------------- 65
Cancris vicksburgensis, Pullenia alazanensis at 118-128.

Depth (feet)
168

Upper Eocene: Jackson Group: Cooper Marl:

Limestone: whiter than above, soft, chalky, weathered ( ?) , fos-

siliferous (abundant bryozoan remains and Foraminifera) ______ 46

214

Siphonina jacksonensis, Gypsina globula, Eponides jacksonensis, Lepidocyclina sp. at 168-178.
Discorbis assulata, Planulina cocoaensis, Cibicides cocoaensis, Robulus alato-limbatus, Robulus arcuato-striatus var., Rotalia mexicana var., Pyrgo sp., Quinqueloculina sp., Cibicides lobatulus, Cibicides mississippiensis, Gypsina globula at 198-214.

Middle Eocene(?): Claiborne Group: Lisbon Formation:

Sand: fine to coarse-grained, angular, fossiliferous (casts

and molds of megafossils)

--------------------------------------

2

216

Summary:

Miocene (undifferentiated) __

___________________________ 91

91

Oligocene (undifferentiated) ___ ---------------------------------------------Upper Eocene (Cooper marl) ___________ ------------------------

77

168

46

214

Middle Eocene ( ?) (Lisbon formation) _

2

216

Potential Water-Bearing Zones:

Sand: fine to coarse-grained __ _

Limestone ___

_________________

Sand: fine to coarse-grained

13

91

123

214

2

216

Location: Owner: No.1 Arnett Elementary School Driller: Speedy McQuaig Plumbing Company Drilled: 1955

SCREVEN COUNTY
Well No.: GGS 462 Elev.: 216

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand : fine to medium-grained, arkosic; clay, bluish-gray to

tan to red (mottled), very sandy______________________________________________________ 10

10

350

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Miocene (Undifferentiated):

Thickness (feet)

Clay: yellowish-green to purple (mottled), sandy, phosphatic (at depth) ; interbedded sand, fine to medium-grained, somewhat coarser-grained at depth_____________________________ ---------------- 150

Light-gray phosphatic pebbles prominent at 100-110.

Yellowish-green chert prominent at 150-160.

Clay and sand: as above; thin tongues of limestone, white,

dense, sandy

60

Depth (feet)
160
220

Oligocene (Undifferentiated):

Limestone: light-gray to pinkish, dense (much calcitized),

nodular, sandy, fossiliferous (casts and molds of megafossils

chiefly Gastropods, bryozoan remains and Foraminifera) _

80

300

Dictyoconus1 sp., Rotalia mexicana var., Qninqueloculina sp. at 220-230. Gypsina globula1 common at 230-240. Lepidocyclina mantelli? at 250-260.

Summary:
Pliocene to Recent (undifferentiated) __ _ Miocene (undifferentiated) _____ Oligocene (undifferentiated) ____

10

10

210

220

80

300

Potential Water-Bearing Zones:
Limestone Sand: fine to coarse-grained__ ____ __ _ _______

70

290

10

300

Location: 6.5 mi. east of Rockyford, south side of alternate Highway 17
Owner: No. 1 Oak Grove Methodist Church Driller: Turner Well Drilling Company Drilled: 1959

SCREVEN COUNTY
Well No.: GGS 578 Elev.: 165

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: light-gray with red streaks (mottled), pale-yellowish-

green at depth, very sandy_______________________________________________________ 84

84

Sand: coarse-grained, subrounded, arkosic__

41

125

'Reworked ( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

351

Thickness

(feet)

Clay: pale-yellowish-green, sandy, light-brown rounded phos-

phatic pebbles

___ ____ __ ___ ___ __ _____________________________________ 21

Sand: coarse-grained, subrounded, jet-black rounded phos-

phatic pebbles, fossiliferous (macroshells) _______

31

Depth (feet)
146
177

Oligocene (Undifferentiated):

Limestone: cream with dark-gray to black streaks, nodular,

massive but porous, somewhat cherty, fossiliferous (frag-

ments and molds of megafossils, echinoid and bryozoan re-

mains, Ostracods, and Foraminifera)_

18

195

Quinqueloculina sp., Rotalia mexicana var., Asterigerina subacuta, Lepidocyclina sp.l, Operculinoides sp.1, and Gypsina globula1 at 177-188.

Limestone: cream, rather soft and chalky, fossiliferous (bryo-

zoan remains and some Foraminifera) ______

12

207

Gypsina globula1 common at 195-207.

Miocene (undifferentiated) _ Oligocene (undifferentiated)

Summary:

177

177

30

207

Limestone

Potential Water-Bearing Zones:

30

207

Location: 16 mi. north of Sylvania on U.S. Highway 301 Owner: Wade Plantation Driller: Turner Well Drilling Company Drilled: 1959

SCREVEN COUNTY
Well No.: GGS 590 Elev.: 95

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Sand: coarse-grained, subangular, arkosic; interbedded clay,

dark-brown to mottled to yellowish-green at depth, sandy

123

123

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, much leached, rather soft and porous, fos-

siliferous (molluscan shells, echinoid and bryozoan remains,

and s:Jme Foraminifera)

___ _________

20

143

Operculinoides floridensis, Asterocyclina nassauensis, Lepidocyclina sp. at 123-143.

'Reworked ( ?) fossil of middle Eocene age.

352

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Middle Eocene: Claioorne Group: Lisbon Formation:

Thickness (feet)

Sand: fine to coarse-grained, subangular, sparsely phosphatic,

fossiliferous at depth (Foraminifera) ; some clay, light-

gray, somewhat indurated and tough, very sandy, finely

glauconitic, micaceous ______

20

Nonion advena abundant, Nonion inexcavatus, Bolivina sp., Cibicides arnericanus var. antiquus, Cibicides lobatulus at 143-163.

Clay: light to dark-greenish-gray to brownish-green, very

sandy, sparsely phosphatic, micaceous, carbonaceous

10

Limestone: light-gray, saccharoidal, dense, sandy, sparsely

phosphatic, glauconitic, fossiliferous (molds and impressions

of molluscan shells, echinoid and bryozoan remains, and

some Foraminifera) ____

57

Spiroplectarnrnina rnississippiensis var., Textularia hannai, Nonion advena, Discorbis assulata, Gyroidina soldanii var., Cibicides arnericanus, Cibicides lobatulus, Cibicides cf. C. refulgens at 191-210.

Limestone: as above but light-gray to cream at depth __

41

Marl: cream but rather dark-brownish-green at depth, some-

what indurated and tough, sandy, with hard limey nodules,

,fossiliferous (echinoid and bryozoan remains, Ostracods,

and Foraminifera); interbedded limestone or coquina,

white to light-brown, sandy, coarsely but sparsely glaucon-

itic, fossiliferous (echinoid and bryozoan remains, and abun-

dant fragments and molds of megafossils); beds of sand,

fine to coarse-grained, subangular, sparsely phosphatic

103

Discorbis georgiana, Gyroidina soldanii var., Alabarnina atlantisae, N onion planatus, Guttulina irregularis, Cibicides danvillensis, Cibicides ouachitaensis, Cibicides pseudoungerianus var., Cibicides westi, Cibicides sp. at 271-292.
Cibicides pseudoungerianus var. lisbonensis, Cibicides pippeni, Cibicides westi at 292-312.
Coquina prominent at 312-333.

Depth (feet)
163 173 230 271
374

Summary:

Miocene (undifferentiated)

____________ _

Upper Eocene (Ocala limestone) Middle Eocene (Lisbon formation) _

Sand: fine-grained Limestone

Potential Water-Bearing Zones:

123

123

20

143

231

374

30

173

98

271

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

353

Location: In Donalsonville Owner: City of Donalsonville Drilled: August 1947

SEMINOLE COUNTY
Well No.: GGS 149 Elev.: 1501

Thickness
- - - - -(feet)

Depth (feet)

No samples

60

60

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white to cream, much calcitized, crystalline, mas-

sive, fossiliferous (bryozoan remains and Foraminifera)

100

160

Operculinoides sp., Lepidocyclina sp. at 65-77. Gypsina globula at 77-90. Amphistegina pinarensis var. at 100-112.

Summary:
No samples ----------------------------------- __ In upper Eocene (Ocala limestone)

60

60

100

160

Potential Water-Bearing Zones: Limestone __________________ _

100

160

Remarks:
Additional aquifers-water-bearing sands and limestones-occur below total depth of this well.

Location: 660 ft. from south line and 660 ft. from east line of Land Lot 82, 27th Land District
Owner: No.1 W. E. Harlow Driller: Mont Warren et al Drilled: February 1949

SEMINOLE COUNTY
Well No.: GGS 187 Elev.: 145
(derrick floor)

Thickness Depth

(feet)

(feet)

Residuum:

Clay: bluish-gray to tan (mottled), very sandy, limonitic______

40

40

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: yellow, much leached, crystalline, highly calci-

tized, fossiliferous (casts and molds of megafossils, echinoid

and bryozoan remains, and some Foraminifera) _________________

10

50

'Average elevation based on Georgia State Highway Maps.

354

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thicknes (feet)

Sand: fine to coarse-grained, angular; some limestone, as above _ 10

A mphistegina pinarensis var., Operculinoides sp., Asterocyclina sp. at 50-60.

No samples_

603

Depth (feet)
60
GC3

In Middle Eocene: Claiborne Group: Tallahatta Formation:

Sand: fine to coarse-grained, subangular, somewhat indurated,

glauconitic; fragments of limestone, gray, crystalline, dense,

very sandy, coarsely glauconitic, fossiliferous (fragments,

casts and molds of megafossils) ____

57

720

Lower Eocene: Wilcox Group (Undifferentiated):

Indurated sand: fine to medium-grained, subangular, coarsely

and abundantly glauconitic, fossiliferous (fish teeth)

30

750

Clay: dark-gray, silty, lignitic, micaceous _

160

910

Paleocene: Midway Group: Clayton Formation:

Limestone: gray, dense, crystalline, very sandy, glauconitic,

fossiliferous (fragments and casts of megafossils)

10

920

Indurated sand: fine-grained, dense, saccharoidal, glauconitic

(finely disseminated), fossiliferous (fragments, casts and

molds of megafossils, bryozoan remains, Ostracods, and

Foraminifera)

60

980

Operculinoides catenula, Rotalia sp. at 960-970.
Pseudophragmina stephensoni, Rotalia sp., Boldia madrugensis at 970-980.

Limestone: cream, granular, coarsely glauconitic at certain

levels, cherty, fossiliferous (some Foraminifera) _

85 1,065

Brown chert prominent at 990-1000.

Vaginulina lonr,tiforma, Boldia madrugensis, Discorbis midwayensis var. soldadoensis, Siphonina prima at 1040-1050.

Indurated sand: dark-gray, fine-grained, argillaceous, glauconitic (finely disseminated), micaceous; stringers of clay, dark-gray, micaceous, carbonaceous____

75 1,140

Indurated sand 1 : as above_____________

90 1,230

Limestone: gray, granular, rather loosely consolidated, glau-

conitic (finely disseminated), fossiliferous (some Foramini-

fera)

-------------------------------------------------------------------------------- 170

1,400

'Indurated sand grades gradually downward into the underlying granular limestone. No sharp contact was observed between these two lithologic units.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

355

Thickness (feet)

Marl: gray, silty, chalky, micaceous, fossiliferous (abundant

Foraminifera2)

30

Depth (feet)
1,430

Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):

Marl: gray, chalky, micaceous, pyritiferous, fossiliferous

(abundant Foraminifera) __

25

Globotruncana cretacea common at 1430-1440.

Indurated sand: fine-grained, glauconitic, rather dense, mi-

caceous

220

Marl: gray, chalky, micaceous, pyritiferous, fossiliferous (at certain horizons, macroshells, Ostracods, and Foraminifera) 805

Planulina taylorensis at 1720-1730.

Bolivinoides decorata at 1730-1740. Kyphopyxa christneri at 2060-2070.

Vaginulina texana at 2310-2320.

Sand: fine to coarse-grained, somewhat indurated, glauconitic

(finely disseminated) ; thin stringers of marl, as above__

125

Sand: indurated, more or less fine to coarse-grained, angular,

phosphatic, glauconitic (finely disseminated) ______

145

1,455 1,675 2,480
2,605 2,750

Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, micaceous, fossiliferous

(at certain horizons, macroshells); clay, pale-green, some-

what mottled, sandy, micaceous

190

Sand: fine to medium-grained, angular, micaceous, fossilifer-

ous (at certain horizons, macroshells) ; interbedded shale,

dark-gray, fissile, carbonaceous, micaceous (finely dissemi-

nated flakes) ______

250

Indurated sand: fine-grained, abundantly glauconitic (finely

disseminated); some shale, as above __ _

78

Sand: coarse-grained, angular, arkosic; interbedded clay,

yellowish-green to red (mottled), micaceous, sandy_

304

2,940
3,190 3,268 3,572

Summary:

Residuum

Upper Eocene (Ocala limestone)

No samples __

____________ _

In middle Eocene (Tallahatta formation)_ Lower Eocene ("Wilcox group, undifferentiated) ____

Paleocene (Clayton formation)_

________ --------- __

Upper Cretaceous (post-Tuscaloosa, undifferentiated)

Upper Cretaceous (Tuscaloosa formation)

2TamE:"si fauna of. Paleocene age.

40 20 603 57 190 520 -- _____ 1,320
822

40 60 663 720 910 1,430 2,750 3,572

356

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Potential Water-Bearing Zones: None observed in samples available on this well.

Thickness Depth

(feet)

(feet)

Remarks:
Water-bearing limestone occurs somewhere in the interval 60-400. Samples were lacking in the interval 60-663, hence the thickness of the Ocala formation in this well is not known on the basis of available samples.

Location: 2.5 mi. north of Lumpkin on Highway 27 Owner: No. 1-A Interstate Land Development Company Driller: Southeastern Drilling Company Drilled: October 1955

STEWART COUNTY
Well No.: GGS 451 Elev.: 525

Thickness Depth

(feet)

(feet)

Upper Cretaceous: Providence Sand:

Sand: fine to coarse-grained, angular, limonitic; some clay,

tan to pink (mottled) to white (kaolin) at depth, micaceous,

sandy ------------------------------------------------------------------------------------------------ 70

70

Sand: coarse-grained, angular, arkosic__

5

75

Ripley Formation:

Marl: dark-gray, silty, somewhat sandy at depth, micaceous,

carbonaceous, phosphatic, glauconitic, fossiliferous at depth

(macroshells, Ostracods, and Foraminifera)

_______________ _ 255

330

Gaudryina sp., Robulus sp., Anomalina clementiana at 100110. Loxostoma plaitum, Anomalina pseudopapillosa, Anomalina clementiana at 120-130.
Planulina henbesti at 220-230.

Cusseta and Blufftown (Undifferentiated):

Sand: fine to coarse-grained, angular, micaceous, phosphatic,

lignitic; interbedded clay, dark bluish-gray to brown, some-

what fissile, carbonaceous, micaceous, pyritiferous__ _________________ 180

510

Summary:

Upper Cretaceous (Providence sand)_______

__ ___________

75

'76

Upper Cretaceous (Ripley formation)__________________

____________________ 255

330

Upper Cretaceous (Cusseta and Blufftown, undifferentiated)________ 180

510

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

357

Potential Water-Bearing Zones: Sand : fine to coarse-grained

Thickness Depth

(feet)

(feet)

20

434

Location: 1.5 mi. east of road junction in Omaha, north side of east-west secondary road
Owner: No. 1 Omaha School Driller: Layne-Atlantic Company Drilled: February 1956

STEWART COUNTY
Well No.: GGS 478 Elev.: 318

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Clay: bluish-gray to tan to brick-red (mottled), very sandy,

limonitic ____________ -------------------------------- --------------------------- ___________________ 11

11

Sand: very coarse-grained (subgravel size), angular, arkosic

17

28

Upper Cretaceous: Ripley Formation:

Marl: dark bluish-gray, carbonaceous, micaceous, phosphatic,

pyritiferous, fossiliferous (macroshells, Ostracods, and

Foraminifera); sideritic and glauconitic at depth

66

94

Robulus stephensoni at 68-78. Glauconite common at 88-94.

Cusseta Sand :

Sand: fine to coarse-grained, subangular, fossiliferous (mac-

roshells) __ ____ _

__________________ - _ --------- ------ 20

114

Blufftown Formation:

Marl: as above; interbedded at widely separated intervals

with beds of indurated sand, dark-gray, rather dense and

crystalline, micaceous, glauconitic (finely disseminated) __

197

311

Vaginulina texana at 188-198. Vaginulina texana, Marginulina sp. at 290-300.

Summary:

Pliocene to Recent (undifferentiated)___________________ _______________

28

28

Upper Cretaceous (Ripley formation)-------------------------------------------------- 66

94

Upper Cretaceous (Cusseta sand)----------------------------------------

20

114

Upper Cretaceous (Blufftown formation)-------------------------------------------- 197

311

358

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Potential Water-Bearing Zones: Sand: fine to coarse-grained____

rl'hickne81:) (feet)

Depth (feet)

20

114

Remarks:
The best aquifers (sand) in this area occur much deeper than the total depth of this well. Such aquifers belong to the more deeply buried Eutaw and Tuscaloosa formations.

Location: Northeastern part of County, near Flint River, few hundred yd. south of Creek Branch, east side of north-south County Road
Owner: No. 6 USGS Test Hole Driller: Scott Bros. Drilled: August 1946

SUMTER COUNTY
Well No.: GGS 137 Elev.: 278

Thick:w>ss (feet)

Depth (feet)

Residuum: Clay: mottled, very sandy, limonitic

20

20

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, glauconitic at depth, sandy, fossiliferous

(macroshells and Foraminifera at certain levels)

26

46

Lepidocyclina sp., Gypsina globula at 30-40.

Middle Eocene: Claiborne Group: Lisbon Formation:

Marl: light-gray, sandy, glauconitic (finely disseminated

grains), fossiliferous (macroshells, bryozoan remains, and

Foraminifera); interbedded limestone, cream, dense, sandy,

glauconitic, fossiliferous (macroshells) _

44

90

Gyroidina soldanii var., Siphonina claibornensis, Cibicides westi at 46-50 core.

Tallahatta Formation:

Sand: fine to coarse-grained, angular, phosphatic, fossilifer-

ous (a coquina)

____________ _

100

190

Limestone: gray, dense, sandy, glauconitic, fossiliferous

(maeroshells)

10

200

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

359

Lower Eocene: Wilcox Group (Undifferentiated): Clay: dark-gray, silty, carbonaceous, glauconitic_

Thickness Depth

(feet)

(feet)

60

260

Paleocene: Midway Group: Clayton Formation:

Sand: fine to medium-grained, angular, somewhat indurated;

thin stringers of clay, light-gray, micaceous ______ ______

30

290

Clay: dark-gray to black, carbonaceous, glauconitic, micaceous

(finely disseminated) _

20

310

Limestone: gray, dense, crystalline, sandy, fossiliferous (casts

and molds of megafossils and occasional bryozoan remains)_ _ 50

360

Upper Cretaceous: Providence and Ripley (Undifferentiated):

Sand: fine to coarse-grained, angular__

20

380

Sand: as above; marl, bluish-gray, silty, micaceous, fossilifer-

ous (megafossils and Foraminifera at depth) ______ _

70

450

Anomalina pseudopapillosa at 420-430.

Summary:

Residuum _

__ ___________

20

20

Upper Eocene (Ocala limestone) ___ _

26

46

Middle Eocene (Lisbon formation) __

44

90

Middle Eocene (Tallahatta formation) ____

110

200

Lower Eocene (Wilcox, undifferentiated) __

60

260

Paleocene (Clayton formation) ____

_____________________________

100

360

Upper Cretaceous (Providence and Ripley, undifferentiated) _

90

450

Potential Water-Bearing Zones:
Sand: fine to medium-grained Limestone __ Sand: fine to coarse-grained _

30

290

50

360

20

380

SUMTER COUNTY

Location: In Americus

Well No.: GGS 147

Owner: City of Americus

Elev.: 412

Driller: Layne-Atlantic Company

Drilled: 1947

Thickness Depth
-------------------------------------------------(f-ee-t)-- (feet)

Middle Eocene: Claiborne Group: Tallahatta Formation:

Clay: mottled, sandy, limonitic; tongues of sand, fine to me-

dium-grained, angular ___

___ _____________

_____________ _

37

37

Sand: fine to coarse-grained, angular

52

89

360

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Lower Eocene: Wilcox Group (Undifferentiated):

Thickntss (feet)

Clay: light-gray, silty, micaceous, iron-stained__

20

Clay: dark-gray to black, silty, micaceous, carbonaceous, glauconitic -------------------------------------------------------------------------------------------- 38

Depth (feet)
109
147

Paleocene: Midway Group: Clayton Formation:

Clay: white to pink (mottled), bauxitic?, micaceous, sandy __

19

166

Sand: fine to coarse-grained, subangular ____________ _

4

170

Limestone: gray, dense, crystalline, sandy, fossiliferous (meg-

afossils and some bryozoan remains)______________ _

40

210

Upper Cretaceous: Providence and Ripley (Undifferentiated):

Clay: gray, blocky, micaceous______ _

11

221

Sand: fine to coarse-grained, angular__

60

281

Marl: gray, silty, micaceous; some sand, as above__

46

327

Limestone: gray, dense, crystalline, very sandy__

25

352

Marl: gray, sandy, chalky, micaceous, fossiliferous (some

microfossils) ; interbedded sand, fine to medium-grained,

angular -------------------------------- ----------------------- __________________ _

274

626

Anomalina pseudopapillosa at 352-358.

Sand: fine to coarse-grained, angular; interbedded clay or

shale, dark-brown, fissile, silty, lignitic, highly micaceous

360

986

Summary:

Middle Eocene (Tallahatta formation) _____

89

89

Lower Eocene (Wilcox group, undifferentiated)_

58

147

In Paleocene (Clayton formation)__________________

___________________ _

63

210

Upper Cretaceous (Providence and Ripley, undifferentiated) __

776

986

Potential Water-Bearing Zones:

Sand: fine to coarse-grained_____

Limestone _

______________ _

Sand: fine to coarse-grained____

Sand: fine to coarse-grained

3

169

37

210

60

281

100

726

Remarks:
Owing to ground-water discharge (springs) and local rather rugged topography, all prospective aquifers occurring at depths of less than 200 feet below land surface are possibly dry and not good risks as sources of ground water.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

361

Location: At Aries Owner: Dayton Veneer and Lumber Company Driller: Layne-Atlantic Company Drilled: 1948

SUMTER COUNTY
Well No.: GGS 215 Elev.: 463

Thickness Depth

(feet)

(feet)

Middle Eocene: Claiborne Group: Tallahatta Formation:

Clay: brick-red, very sandy, limonitic _______________________________

33

33

Clay: light-gray to tan to red (mottled), sandy, limonitic

20

53

Sand: fine to coarse-grained, subangular_____________________________________ 82

135

Lower Eocene: Wilcox Group (Undifferentiated): Clay: dark-gray, sandy, carbonaceous, micaceous_

30

165

Paleocene: Midway Group: Clayton Formation:

Clay (or kaolin) : white to light-gray, sandy, abundantly side-

ritic, micaceous, bauxitic?_

38

203

Clay: light to dark-gray, silty, abundantly glauconitic, car-

bonaceous, micaceous _______ ------------------------------ __________________

16

219

In Upper Cretaceous: Providence and Ripley (Undifferentiated):

Marl: gray, silty, micaceous, glauconitic, fossiliferous at depth

(Foraminifera); interbedded limestone, gray, dense, crys-

talline, sandy, fossiliferous (macroshells)

_________________ _ 167

386

Limestone prominent at 262-275. Limestone prominent at 342-375. Anomalina pseudopapillosa at 375-386.

Summary:

Middle Eocene (Tallahatta formation)_________________________ ___________________ 135

135

Lower Eocene (Wilcox group, undifferentiated)_______________________________ 30

165

Paleocene (Clayton formation)____

----------------~-------------

54

219

In Upper Cretaceous (Providence and Ripley, undifferentiated)____ 167

386

Potential Water-Bearing Zones:

Sand: fine to coarse-grained ___ -------------------------------------------------~------~--- 55

135

Sand: fine to coarse-grained----------------------------------------------------~------------- 58

342

362

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 1.5 miles northeast of Plains, 4.2 miles west of New Point Flag Station, 0.1 mile south of Highway 280
Owner: No. 1 Southwestern Georgia Experiment Station Driller: Layne-Atlantic Company Drilled: March 1952

SUMTER COUNTY
Well No.: GGS 280 Elev.: 513

Thickness Depth

(feet)

(feet)

No samples ____________________________________________________________________________________________ 5

5

In Middle Eocene: Claiborne Group: Tallahatta Formation:

Clay: mottled, sandy, limonitic__ ------------------------------ _________________

33

38

Sand: fine to coarse-grained, angular__

57

95

Lower Eocene: Wilcox Group (Undifferentiated): Clay: gray, sandy, carbonaceous, glauconitic at depth

49

144

Summary:
No samples ---------------------------------------------------In middle Eocene (Tallahatta formation) Lower Eocene (Wilcox group, undifferentiated)

5

5

90

95

49

144

Potential Water-Bearing Zones: Sand: fine to coarse-grained__________________________________________

57

95

Location: Americus, on west side of Lee Street Rd., opposite Country Club, 0.8 mi. north of Mill Creek Bridge, and about 20 west of southwest corner of dwelling
Owner: No.1 Old Peoples (County) Home Driller: Layne-Atlantic Company Drilled: March 1952

SUMTER COUNTY
Well No.: GGS 281 Elev.: 391

Thickness Depth

(feet)

(feet)

No samples __________________________________________

5

5

Middle Eocene: Claiborne Group: Tallahatta Formation:

Clay: brick-red, sandy, limonitic _________________________ _

7

12

Sand: fine to coarse-grained, subangular; interbedded clay,

pale-green, somewhat micaceous, sandy __

108

120

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

363

Lower Eocene: Wilcox Group (Undifferentiated):

Thickness (feet)

Clay: gray, silty, micaceous, carbonaceous, glauconitic__ _

7

Sand: fine to coarse-grained, glauconitic, fossiliferous (a coquina but not consolidated)____________________________________________________________ 33

Depth (feet)
127
160

Paleocene: Midway Group: Clayton Formation:

Limestone: gray, dense, crystalline, sparsely glauconitic, fos-

siliferous (megafossils and some bryozoan remains) ; some

clay, black, fissile, carbonaceous, micaceous (finely dis-

seminated) ____

----------------------------------

30

190

Sand: medium-grained, angular; some marl, gray, silty, mi-

caceous ____ _

17

207

Summary:

No samples _

______________________________ _

In middle Eocene (Tallahatta formation)_ Lower Eocene (Wilcox group, undifferentiated) Paleocene (Clayton formation) __

5

5

115

120

40

160

47

207

Potential Water-Bearing Zones:
Sand: fine to coarse-grained____ _ Limestone Sand: medium-grained _______

33

160

30

190

10

207

Location: 2 mi. south of Flintside grade crossing of S.A.L.
R.R., about 100 yds. west of county road, 40 north of
dwelling
Owner: No. 1 Trim Porter
Driller: F. P. Jones
Drilled: March 1952

SUMTER COUNTY
Well No.: GGS 283 Elev.: 322

Thickness Depth

(feet)

(feet)

Residuum: Sand: medium to coarse-grained, angular, limonitic

30

30

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: yellow, much calcitized, somewhat crystalline,

sparsely glauconitic (at depth), fossiliferous (macroshells,

bryozoan remains, and some Foraminifera) __

100

130

Siphonina jacksonensis at 40-50. Lepidocyclina sp., Operculinoides sp. at 80-90.

364

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:
In Residuum _______________ -----------------------------------------Upper Eocene (Ocala limestone) ________

Thickness Depth

(feot)

(feet)

30

30

100

130

Limestone

Potential Water-Bearing Zones:

90

130

Location: In Plains Owner: City of Plains Driller: Layne-Atlantic Company Drilled: March 1952

SUMTER COUNTY
Well No.: GGS 291 Elev.: 502

Thickness Depth

(feet)

(feet)

Middle Eocene: Claiborne Group: Tallahatta Formation: Clay: mottled, very sandy, limonitic______ Sand: fine to coarse-grained, angular_________ Clay: olive-green to red (mottled), sandy

30

30

50

80

10

90

Lower Eocene: Wilcox Group (Undifferentiated): Clay: dark-gray, silty, glauconitic, carbonaceous, micaceous_ Sand: fine to coarse-grained, subangular, glauconitic__

50

140

14

154

Paleocene: Midway Group: Clayton Formation:

Clay: black, somewhat fissile, carbonaceous, micaceous ____ _

15

169

Sand: fine-grained, indurated at certain levels, glauconitic_

45

214

Clay: gray, carbonaceous, micaceous; interbedded limestone,

gray, crystalline, glauconitic, fossiliferous (macroshells and

some bryozoan remains)

____________ _

28

242

Limestone: as above

21

263

Summary:
Middle Eocene (Tallahatta formation) Lower Eocene (Wilcox group, undifferentiated) Paleocene (Clayton formation) ____________________________ _

90

90

64

154

109

263

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

365

Potential Water-Bearing Zones:

Thickness (feet)

Sand: fine to coarse-grained_________________________________________________________________ 14 Sand: fine to coarse-grained___________________________________________________________________ 45

Limestone __________ ------------------------------------------------------------------------------------ 21

Depth (feet)
154 214 263

Remarks: More productive aquifers (of Upper Cretaceous age) are available below 263.

Location: % mi. northeast of Shiloh School, at dwelling Owner: No.1 Smith Moore Driller: Southeastern Drilling Company Drilled: 1952

SUMTER COUNTY
Well No.: GGS 296 Elev.: 509

Thickness Depth

(feet)

(feet)

Middle Eocene: Claiborne Group: Tallahatta Formation:

Sand: fine to coarse-grained, angular; interbedded clay, pale-

green to tan to red (mottled), micaceous, limonitic____________________ 140

140

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: dark-gray, silty, micaceous, abundantly glauconitic__________ 14

154

Summary:
Middle Eocene ( Tallahatta formation) ___________________________________ Lower Eocene (Wilcox group, undifferentiated) _______________

140

140

14

154

Potential Water-Bearing Zones: Sand: fine to coarse-grained__

40

140

Location: At Spring Creek, near swimming pool, at first road south of grocery
Owner: No. 1 C. E. Pelcher Driller: F. P. Jones Drilled: May 1952

SUMTER COUNTY
Well No.: GGS 303 Elev.: 247

Thickness Depth

(feet)

(feet)

Residuum:

Clay: dark-brown, sandy, lignitic, and fragments of residual

limestone _

----------------------------------------------------------------------------- 30

30

366

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Eocene: Jackson Group: Ocala Limestone:

Thickness (feet)

Sand: fine to coarse-grained, somewhat indurated, glauconitic

at depth, fossiliferous (macroshells)__ ____________

40

Depth (feet)
70

Middle Eocene: Claiborne Group: Lisbon Formation:

Marl: gray, glauconitic, fossiliferous (macroshells, bryozoan

remains, and Foraminifera); some sand, as above_____________________ 20

90

Asterigerina sp., Cibicides westi at 80-90.

Limestone: gray, coarsely glauconitic, sandy; some marl, as

above ---------------------------------------- ----------------

--------------

20

110

Tallahatta Formation: Sand: fine to medium-grained, fossiliferous (macroshells)

30

140

Summary:
Residuum ________________________________________ Upper Eocene (Ocala limestone) _______ Middle Eocene (Lisbon formation)_ Middle Eocene (Tallahatta formation)

30

30

40

70

40

110

30

140

Potential Water-Bearing Zones: Sand: fine to coarse-grained_______

30

140

Location: Near intersection of Virginia and Harold Sts., opposite City High School, east side of Harold St., in Americus
Owner: City of Americus Driller: Layne-Atlantic Company Drilled: January 1953

SUMTER COUNTY
Well No.: GGS 333 Elev.: 380

Thickness Depth

(feet)

(feet)

Middle Eocene: Claiborne Group: Tallahatta Formation: Clay: mottled, sandy, limonitic________________________________________________ Sand: fine to coarse-grained, subangular, limonitic_____
Lower Eocene: Wilcox Group (Undifferentiated): Clay: dark-gray, silty, carbonaceous, micaceous

30

30

32

62

34

96

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

367

Thickness (feet)
Clay: dark-gray, silty, micaceous, abundantly glauconitic, fossiliferous (some Foraminifera) ------------------------------------------------------ 12

Robulus sp., Valvulineria scrobiculata, Eponides dorfi at 96-108.

Sand: fine to coarse-grained, subangular, arkosic; relatively

thin stringers of clay (or fuller's earth), light-gray, silty,

blocky, carbonaceous, micaceous ____________________________________

62

Depth (feet)
108
170

Paleocene: Midway Group: Clayton Formation:

Clay (or fuller's earth) : as above; some fissile clay, black,

carbonaceous, micaceous, fossiliferous (some Foraminifera)_ 26

196

Ammobaculites sp., Nodosaria a/finis, Robulus sp., Eponides lotus, Discorbis midwayensis, Cibicides newmanae, Cibicides howelli at 190-198.

Limestone: light-gray, dense, crystalline, sandy, glauconitic

at depth, fossiliferous (casts and molds of megafossils, bryo-

zoan remains, and Foraminifera) _________________________________________________ 18

214

Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):

Clay or kaolin: light-gray, somewhat waxy, blocky__

4

218

Sand: fine to coarse-grained, angular, grains of "rose quartz"____ 14

232

Marl: dark bluish-gray, chalky, silty, micaceous, fossiliferous

(some macro- and microfossils at certain levels); inter-

bedded sand, fine to medium-grained _

58

290

Epistomina camcolla at 238-280.

Limestone: gray, dense, crystalline, sandy_

14

304

Marl: as above, sandier with depth

18

322

Sand: fine to coarse-grained, angular; interbedded marl, as

above

27

349

Marl: as above

33

382

Sand: fine to coarse-grained, angular; interbedded marl, as

above

44

426

Marl: as above; interbedded sand, fine to medium-grained,

angular ___

_______________

__________________ 36

462

Sand: fine to coarse-grained, angular____________________

8

470

Sand: fine to medium-grained, angular; interbedded marl, as

above _____

----------------

70

540

Sand: fine to coarse-grained, angular________________________________________________ 20

560

368

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Marl or shale: dark-brown, somewhat fissile, silty, carbonaceous, highly micaceous__________________________________ __ ___________ __________________ 19

Depth (feet)
579

Sand: fine to coarse-grained, angular; interbedded marl,

dark-brown, fissile, carbonaceous, silty, highly micaceous

405

984

Summary:

Middle Eocene (Tallahatta formation) _____ _

Lower Eocene (Wilcox group, undifferentiated)

Paleocene (Clayton formation)

_____________ _

Upper Cretaceous (post-Tuscaloosa, undifferentiated) ______

62

62

108

170

44

214

770

984

Potential Water-Bearing Zones:

Sand: fine to coarse-grained___________ ----------------------------------------- ______________ 8

170

Sand: fine to coarse-grained__________________________________________________________________ 14

232

Sand: fine to coarse-grained___________________________________________________________________ 10

332

Sand: fine to coarse-grained_____ ------------------------- _____________

9

349

Sand: fine to coarse-grained________________________________

12

394

Sand: fine to coarse-grained_________________________________________________________

10

408

Sand: fine to coarse-grained________________________________________

8

470

Sand: fine to coarse-grained_____________________________________________

15

604

Sand: fine to coarse-grained ______________________________________________________________

6

630

Sand: fine to coarse-grained____________ ------------------------------ ___________

8

692

Sand: fine to coarse-grained____________________________________________________________________ 26

754

Sand: fine to coarse-grained____________________________________________________________________ 42

800

Sand: fine to coarse-grained____________________________________________________________________ 24

914

Remarks:
Owing to local rugged topography, all relatively shallow-lying aquifers are probably dry through ground-water leakage (i.e. spring discharge) and are doubtful sources of ground water.

Location: In Andersonville Owner: No. 1 City of Andersonville Driller: Layne-Atlantic Company Drilled: April 1953

SUMTER COUNTY
Well No.: GGS 342 Elev.: 412

Thickness Depth

(feet)

(feet)

Middle Eocene: Claiborne Group: Tallahatta Formation:

Clay: mottled, sandy, limonitic___________________________________________________________ 23

23

Sand: fine to medium-grained, angular____________

60

83

Sand: coarse-grained, angular____________________________________________________________ 5

88

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

369

Lower Eocene and Paleocene (Undifferentiated):

Thickness (feet)

Clay: tan, sandy, micaceous _______

5

Clay: gray, silty, micaceous, lignitic; some clay, bauxitic?,

white to pink (mottled), micaceous__

_____________________ _

10

Clay: gray, sandy, micaceous, lignitic__

10

Clay: white to pink (mottled), bauxitic?, micaceous_

20

Clay: dark-gray to black, glauconitic, micaceous

3

Clay: light-gray, micaceous___

5

Limestone: gray, dense, crystalline, glauconitic, fossiliferous

(megafossils and bryozoan remains) __ _

41

Depth (feet)
93
103 113 133 136 141
182

Upper Cretaceous: Providence Sand:

Clay: red, micaceous, sideritic__

13

195

Sand: coarse-grained, angular, many grains of "rose quartz"____ _ 21

2Hi

Summary:
Middle Eocene (Tallahatta formation)-------------------------------Lower Eocene and Paleocene (undifferentiated) __ Upper Cretaceous (Providence sand) _____________________

88

88

94

182

34

216

Potential Water-Bearing Zones: Sand: fine to coarse-grained____

21

216

Location: Near Americus Owner: No. 1 International Minerals Corp. Driller: Southeastern Drilling Company

SUMTER COUNTY Well No.: GGS 440

Thickness Depth

(feet)

(feet)

Middle Eocene: Claiborne Group: Tallahatta Formation:

Clay: olive-green to tan to red (mottled), very sandy, limonitic__ 10

10

Lower Eocene: Wilcox Group (Undifferentiated):

Sand: fine to medium-grained, subangular, glauconitic; clay,

dark-gray, micaceous, silty, carbonaceous____________________________________ 30

40

370

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Clay: dark-gray, micaceous, glauconitic, fossiliferous at depth (some Foraminifera) --------------------------------------------------------------------- 10
Robulus wilcoxensis, Valvulineria scrobiculata, Cibicides howelli, Cibicides newmanae at 40-50.

Depth (feet)
50

Paleocene: Midway Group: Clayton Formation:

Clay: white, micaceous, bauxitic?, sandy__

10

60

Sand: fine to medium-grained, subangular; some clay, as above__ 10

70

Clay: black, fissile, glauconitic, fossiliferous; limestone, gray,

nodular, dense (calcitized), fossiliferous (bryozoan remains,

molds and fragments of macroshells, and Foraminifera);

sand and kaolin as above____

10

80

Eponides dorfi, Discorbis midwayensis var. trinitatensis, Siphonina wilcoxensis, Alabamina wilcoxensis, Cibicides howelli, Cibicides praecursorius at 70-80.

Limestone: light-gray, calcitized, nodular, sandy, glauconitic

at depth, fossiliferous (molds and fragments of macroshells,

bryozoan remains, Ostracods and Foraminifera)_

35

115

Marl: bluish to light-gray, silty, micaceous, fossiliferous_

15

130

Siphonina prima, Cibicides howelli, Anomalina umbonifera at 120-130.

Limestone: gray, dense (calcitized), coarsely glauconitic and

sandy at depth, fossiliferous

_____________________ _ 30

160

Eponides lotus, Discorbis midwayensis, Siphonina wilcoxensis, Siphonina prima, Gyroidina aequilateralis, Planulina nacatochensis, Cibicides praecursorius at 130-140.

Limestone: as above; fragments of marl, gray, silty, micaceous __ 10

170

Upper Cretaceous: Providence and Ripley (Undifferentiated):

Sand: fine to coarse-grained, angular

30

200

Marl: light-gray, silty, glauconitic, micaceous, lignitic, pyriti-

ferous, fossiliferous (macroshells, Ostracods and Foramini-

fera); some sand, as above but decreasing with depth _____________ 40

240

Epistomina caracolla, Anomalina pseudopapillosa at 210-220.

Summary:

Middle Eocene (Tallahatta formation)_______________________________________________ 10

10

Lower Eocene (Wilcox group, undifferentiated)-------------------------------- 40

50

Paleocene (Clayton formation)----------------------------------------------------------- 120

170

Upper Cretaceous (Providence and Ripley, undifferentiated)________ 70

240

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

371

Potential Water-Bearing Zones:

Limestone ___ Limestone _

_________________________________ _

Sand: fine to coarse-grained_________ _

Thickness (feet\

Depth
(feet)

30

110

30

160

30

200

Location: 4 mi. southwest of Americus, Land Lot 210, Land District 17
Owner: No.1 Walter Stevens Driller: Flinn-Austin et al Drilled: June 1955

SUMTER COUNTY
Well No.: GGS 442 Elev.: 431

Thickness Depth

(feet)

(feet)

Middle Eocene: Claiborne Group: Tallahatta Formation: Clay: brick-red, very sandy, limonitic____ _ Sand: medium to coarse-grained, angular_____ Sand: as above; some clay, tan to red (mottled), sandy

20

20

30

50

25

75

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: gray, sandy, micaceous, glauconitic, lignitic, pyritiferous__ 25

100

Sand: fine to medium-grained, angular, glauconitic; some

clay, as above_____

______________ _____________________ 55

155

Glauconite abundant at 140-150.

Paleocene: Midway Group: Clayton Formation:

Clay: black, fissile, carbonaceous, micaceous (finely dissemi-

nated) _________ -------------------------------------------------------------------- _________________ 15

170

Limestone: gray, dense, crystalline, sandy, fossiliferous (frag-

ments, casts and molds of megafossils, and some bryozoan

remains)

_____________________

_____________

______________

95

265

Sand: fine to coarse-grained, angular_

10

275

In Upper Cretaceous: Providence and Ripley (Undifferentiated):

Sand: fine to coarse-grained, angular_ __________________________________________ 25

300

Marl: dark bluish-gray, silty, micaceous, pyritiferous, fossil-

iferous (some Foraminifera)---------------------------------------------------------- 50

350

Epistomina sp., Anomalina pseudopapillosa at 300-310.

372

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Indurated sand: fine to medium-grained, angular, fossiliferous (a coquina)---------------------------------------------------------- 25
Sand: fine to medium-grained, angular; interbedded marl, as above ---------------------------------------------------------------------------------------------------- 285
Robulus sp. common at 430-440. Gaudryina rudita, Cibicides harperi at 440-450. Loxostoma plaitum at 490-500.

Depth (feet)
375
660

Marl: as above; interbedded sand, fine to coarse-grained,

angular ----------------------------------------------------------------------------------

240

900

In Cusseta, Blufftown, and Eutaw (Undifferentiated):
Clay or shale: brown, somewhat fissile, carbonaceous, highly micaceous, silty; interbedded sand, fine to coarse-grained, indurated locally ----------------------------------- ------------------------------------------- 735

1,635

In Tuscaloosa Formation:

Sand: coarse-grained, angular, arkosic; interbedded clay,

pale-green to red (mottled), micaceous, sandy________

205

Sand: coarse-grained, angular, arkosic; interbedded clay, pale-green to red (mottled) , sandy, micaceous __________________________ 23 0

Sand: fine-grained, lignitic, micaceous__________________________________________ 70

Clay: mottled, waxy, sandy, micaceous, sideritic___

70

Sand: coarse-grained, angular, arkosic

220

1,840
2,070 2,140 2,210 2,430

Summary:

Middle Eocene (Tallahatta formation) ________________ --------------------------------- 75

Lower Eocene (Wilcox group, undifferentiated) ________________________________ 80

Paleocene (Clayton formation)------------------------------------------------------------- 120

In Upper Cretaceous (Providence and Ripley, undifferentiated) ____ 625

In Upper Cretaceous (Cusseta, Blufftown, and Eutaw, undiffer-

entiated) -------------------------------------------------------------------------------------------- 735

In Upper Cretaceous (Tuscaloosa formation) __

795

75 155 275 900
1,635 2,430

Potential Water-Bearing Zones:

Sand: fine to medium-grained_______________________________________________________________ 50

150

Limestone ___ ----------------------------------------------------------------------------------------------- 95

265

Sand: fine to coarse-grained__________________________________________________________________ 35

300

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

373

Remarks:
Additional water-bearing sands occur below a depth of 300 feet, but will have to be determined by more exact means than can be done on the basis of cuttings on which the above log is based. The electric log of this well would furnish such exacting information, but, so far, this log has not yet been released for this well.

Location: Americus Owner: No. 1 Sweet Potato House Driller: Southeastern Drilling Company Drilled: 1956

SUMTER COUNTY Well No.: GGS 504

Thickness Depth

(feet)

(feet)

Residuum: Sand: fine-grained, argillaceous, limonitic Clay: pale-green to red (mottled), sandy ______________ Sand: fine to coarse-grained, angular__ _

10

10

10

20

10

30

Middle Eocene: Claiborne Group: Tallahatta Formation: Clay: pale-green to red (mottled) , sandy, blocky__________ Sand: coarse-grained, angular

10

40

10

50

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: olive-green to tan to red (mottled), very sandy, glau-

conitic ___________ ___ ______________ __

_______________ ------------- ___

10

60

Clay: bluish-gray, fissile, sandy, glauconitic

40

100

Glauconite very abundant at 90-100.

Paleocene: Midway Group: Clayton Formation:

Sand: coarse-grained; some clay, as above ________ _

50

150

Clay: light to dark-gray to black, somewhat blocky; sand, as

above ___________________ _

10

160

Sand: coarse-grained, subangular

10

170

Clay: black, fissile, finely micaceous; some sand as above ________ 10

180

Limestone: gray, dense (much calcitized), somewhat sandy,

glauconitic, fossiliferous (fragments and molds of macro-

shells, bryozoan remains, Ostracods, and Foraminifera) ____

30

210

Robulus degolyeri, Robulus midwayensis, Siphonina wilcoxensis, Eponides lotus, Discorbis rnidwayensis var. trinitatensis, Anomalina umbonifera, Cibicides howelli, Cibicides praecursorius at 180-190.

374

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Sand: coarse-grained to finer-grained at depth, angular, ar-

kosic _

__ ------------------------------------------------------------------------------- 20

Depth (feet)
230

Upper Cretaceous: Providence and Ripley (Undifferentiated):

Sand: fine-grained -------------------------------------------------------------------------------- 10

240

Sand: as above; clay, light-gray, silty, micaceous, more py-

ritiferous and fossiliferous at depth________________

______________ 50

290

Anomalina pseudopapillosa at 280-290.

Sand: gray, medium-grained, indurated, fossiliferous (frag-

ments and molds of macroshells)'____________________________ _________________ 50

340

Marl: dark-gray, silty, micaceous, fossiliferous_____

70

410

Epistomina caracolla, Planulina correcta, Planulina nacatochensis at 340-350.

Summary:

Residuum

__________________________ __________________

30

30

Middle Eocene (Tallahatta formation)_

20

50

Lower Eocene (Wilcox group, undifferentiated)______________________________ 50

100

Paleocene (Clayton formation)_

__ _________________________ _______________ 130

230

Upper Cretaceous (Providence and Ripley, undifferentiated)

180

410

Potential Water-Bearing Zones:
Sand: coarse-grained _________ ________ ___________________ Sand: fine to coarse-grained ___________ _ Limestone ________________________________ Sand: fine to coarse-grained______

10

50

50

150

30

210

20

230

Location: Near Geneva Owner: No. 1 Geneva School Driller: Layne-Atlantic Company Drilled: September 1954

TALBOT COUNTY
Well No.: GGS 403 Elev.: 575

Thickness Depth

(feet)

(feet)

Upper Cretaceous: Tuscaloosa Formation:

Sand: yellow to light-tan, somewhat argillaceous, fine to

coarse-grained, angular ___

____ ___________ _

5

5

Clay (or kaolin) : white to gray to red (mottled), very sandy,

arkosic _

13

18

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

375

Thicknes:.:; (feet)
Sand: fine to coarse-grained, somewhat argillaceous, arkosic ____ 15

Clay (or kaolin): white to gray to red (mottled), sandy_____

11

Clay: tan to olive-green to red (somewhat mottled), mica-

ceous, sandy, arkosic_____________________ --------------------------------

54

Sand: medium to coarse-grained, angular, arkosic ..

38

Clay: brick-red, very sandy, micaceous_______

10

Sand: medium to coarse-grained, angular, arkosic

11

Sand: as above but somewhat argillaceous ___

19

Depth (feet)
33 44
98 136 146 157 176

Summary: Upper Cretaceous (Tuscaloosa formation) __ _

176

176

Potential Water-Bearing Zones:
Sand: fine to coarse-grained _________________ _ Sand: medium to coarse-grained__ Sand: medium to coarse-grained___

15

33

38

136

11

157

Location: North side of prison yard, few yards east of elevated steel water tank, at Tattnall State Prison
Owner: No.2 Tattnall State Prison Driller: Virginia Machine and Well Company Drilled: 1949

TATTNALL COUNTY
Well No.: GGS 180 Elev.: 187

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, arkosic, finely disseminated

phosphatic grains; some gray clay and white kaolin _________________ 30

30

Miocene (Undifferentiated):

Clay: pale-green, sandy; interbedded sand, fine to coarse-

grained, arkosic, phosphatic at depth__

______________ _ 70

100

Gray phosphatic pebbles prominent at 90-100.

Clay: gray to pale-green, sandy, phosphatic__

40

140

Sand: fine to coarse-grained, phosphatic_____

40

180

Clay: pale-green, sandy, phosphatic

20

200

376

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Clay: as above; interbedded limestone, white, rather dense (much calcitized), sandy, phosphatic; sand, fine to coarse-
grained, phosphatic ---------------------------------------------------------------------------- 210

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic; sand, as above________________________________________________________________

50

Macroshells prominent at 430-440. Indurated sand: fine to medium-grained, coarsely phosphatic______ 10

Limestone: white, dense (much calcitized), very sandy, phosphatic __ ___ _______ -------------------------------- ____ __________ _________ _______ ____ ___ 10

Depth (feet)
410 460
470 480

Oligocene (Undifferentiated):

Limestone: cream, fossiliferous (bryozoan remains and Fora-

minifera) -------------------------------------------------------------------------------------------- 20

500

Dictyoconus1 sp., Asterocyclina1 sp., Asterigerina cf. A. subacuta, Spiroloculina sp., Discorbis byramensis, Gypsina globulal, Reusella oligocenica, Operculinoides1 sp. at 480490.
Lepidocyclina sp., Siphonina advena, Asterocyclina cf. A. nassauensis1 at 490-500.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: as above; fragments of limestone, light gray, crys-

talline (much calcitized), fossiliferous (common to abun-

dant bryozoan remains and Foraminifera)____________ ______________ _ 20

520

Operculinoides sp., Gypsina globula at 500-510. Asterocyclina sp. at 510-520.

Limestone: light-gray, crystalline (much calcitized) , fossil-

iferous (abundant bryozoan remains and Foraminifera)__________ 300

820

Asterocyclina nassauensis, Pseudophragmina flintensis, Gypsina globula at 540-550.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) ____ Oligocene (undifferentiated) __________ Upper Eocene (Ocala limestone) _

30

30

450

480

20

500

320

820

Potential Water-Bearing Zones:

Sand: fine to coarse-grained____________________________________________________________________ 40

180

Limestone __

__ ________

320

820

Samples of poor quality.

Remarks:

1 Reworked ( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

377

Location: At Reidsville Prison Owner: Reidsville Prison Driller: Layne-Atlantic Company Drilled: 1956

TATTNALL COUNTY
Well No.: GGS 522 Elev.: 187

Thickness Depth

(feet)

(feet)

No samples -----------------------------

190

190

In Miocene (Undifferentiated):

Clay: yellowish-green, sandy, phosphatic; interbedded sand,

fine to coarse-grained, phosphatic________________________________________ _________ 80

270

Clay and sand: as above; interbedded limestone, white, sandy__ 70

340

Limestone: white, dense (much calcitized), sandy

50

390

Clay: yellowish-green to pink (mottled), sandy

65

455

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic, fossiliferous (casts and impressions of megafossils

40

495

Limestone: gray, extremely dense (much calcitized), sandy,

coarsely phosphatic, fossiliferous (casts and impressions

of megafossils) _______

------------------------------------

10

505

Oligocene (Undifferentiated):

Limestone: pinkish-brown, massive (much calcitized), nodu-

lar, somewhat oolitic, fossiliferous (Foraminifera)

20

525

Cibicides americanus at 505-515. Pyrgo sp., Asterigerina subacuta, Rotalia byramensis var., Quinqueloculina sp. at 515-525.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, crystalline (much calcitized), fossili-

ferous (bryozoan remains and Foraminifera)

153

678

Operculinoides sp. at 525-538. Asterocyclina sp., Gypsina globula at 538-548. Asterocyclina nassauensis, Pseudophragmina flintensis at 578-588.

Summary:
No samples _______________________ _
In. Miocene (undifferentiated) ___ Oligocene (undifferentiated) Upper Eocene (Ocala limestone) _______________________

190

190

315

505

20

525

153

678

Limestone

Potential Water-Bearing Zones:

153

678

378

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Few miles south of Cobbtown Owner: No. 1 Troy Jarriel Operator: Turner Well Drilling Company Date: September 1959

TATTNALL COUNTY Well No.: GGS 583

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: pale-yellowish-green with tan to red to purple (mot-

tled) streaks, sandy, limonitic ___ ------------------------------- __________________ 42

42

Sand (or very sandy clay): fine-grained, subangular, finely

disseminated very small jet-black grains____________________________________ 21

63

Clay: yellowish-green, blocky, very sandy, cherty at depth ________ 121

184

Clay: as above; interbedded with some few beds of limestone,

white to cream, sandy, jet-black phosphatic pebbles at depth____ 102

286

Sand: fine-grained, subangular grains, phosphatic, as in in-

terval 42-63 ---------------------------------------------------------------------------------- 21

307

Greenish-brown chert prominent at 286-307.

Indurated sand (or coquina): fine-grained, subangular, phos-

phatic, fossiliferous (macroshells); interbedded clay, yel-

lowish-green, rather tough, partially indurated, sandy__ _

205

512

First observed macroshells at 307-327.

Indurated sand and clay: as above; interbedded limestone,

cream, very sandy, phosphatic, fossiliferous (macroshells) ____ 61

573

Limestone: light-brown, somewhat dolomitic ( ?) , saccha-

roidal, very sandy, phosphatic

61

634

Oligocene (Undifferentiated):

Limestone: light-gray to cream (latter at depth), much

leached (weathered?), nodular (when fresh and unweath-

ered), rather soft, loosely consolidated, sandy, fossiliferous

(some echinoid and bryozoan remains and Foraminifera)

41

675

Rotalia mexicana var., Gypsina globula1 at 634-655.

Summary: Miocene (undifferentiated) ______ Oligocene (undifferentiated) __
'Reworked(?) fossil of middle Eocene age.

634

634

41

675

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

379

Potential Water-Bearing Zones: None observed to total depth (675).

Thickness Depth

(feet)

(feet)

Remarks:
This well represents the thickest section of deposits of Miocene so far observed by the writer. It seems probable, therefore, that this well might have penetrated water-bearing limestones by going deeper (possibly 100 to 150 feet deeper than 675 feet).

Location: 1 mi. south of Rupert on Highway 19 Owner: No.2 Jule Cooper Driller: R. G. Duke Drilled: November 1954

TAYLOR COUNTY Well No.: GGS 428

Thickness Depth

(feet)

(feet)

No samples

60

60

In Upper Cretaceous (Undifferentiated):

Sand: fine to medium-grained, angular, arkosic, limonitic

20

80

Sand: fine to coarse-grained, angular, limonitic; inclusions of

kaolin, white, micaceous ____ _

80

160

Sand: fine to coarse-grained, angular, arkosic

20

180

Summary:

No samples

______________ _

In Upper Cretaceous (undifferentiated)

60

60

120

180

Potential Water-Bearing Zones: Sand: fine to coarse-grained

20

180

Location: 1 mi. south of Mauk on State Highway 127, at private dwelling
Owner: No. 1 B. S. Parker Driller: R. G. Duke Drilled: May 1956

TAYLOR COUNTY Well No.: GGS 492

No samples ___

40

40

In Upper Cretaceous (Undifferentiated):

Sand: fine to medium-grained, angular, arkosic; some kaolin,

white to pink (somewhat mottled), micaceous

10

50

380

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Kaolin: white, micaceous, sandy at depth ___

Thickness (feet)
50

Clay: reddish-brown, very sandy, micaceous

10

Sand: fine to coarse-grained, angular, arkosic

50

Clay: gray to pink (somewhat mottled), micaceous, sandy ________ 10

Sand: fine to medium-grained, angular, arkosic _

30

Depth (feet)
100
110 160 170
200

Summary:

No samples ___

_____________________

In Upper Cretaceous (undifferentiated) _____

40

40

160

200

Potential Water-Bearing Zones: Sand: fine to medium-grained ______ -

30

200

Remarks:
Additional aquifers can be penetrated in the Tuscaloosa formation beneath the bottom of this well.

Location: 3.5 to 4 mi. north of Mauk on Atlantic Coast Line R.R. in Norwich
Owner: No.1 W. R. Turner Driller: R. G. Duke Drilled: December 1955

TAYLOR COUNTY Well No.: GGS 499

Thickness Depth

(feet)

(feet)

No samples

40

40

In Upper Cretaceous (Undifferentiated):

Sand: medium-grained, angular, some kaolin, white, micaceous__ 10

50

Sand: fine to medium-grained, angular, arkosic ____

70

120

Sand: medium to coarse-grained, angular, arkosic

10

130

Summary:

No samples __ ___

______________ _

In Upper Cretaceous (undifferentiated) __

40

40

90

130

Potential Water-Bearing Zones: Sand: medium to coarse-grained ______

10

130

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

381

Location: 5 mi. south of Butler Owner: No. 1 F. B. Green Driller: R. G. Duke Drilled: 1955

TAYLOR COUNTY Well No.: GGS 533

Thickness Depth

(feet)

(feet)

No samples

40

40

In Upper Cretaceous (Undifferentiated):

Sand: fine to coarse-grained, angular, arkosic; interbedded

kaolin _______________

110

150

Sand, fine to coarse-grained with some kaolin, white, to pink, micaceous, at 60-70.

Sand with kaolin as above at 100-110.

Summary:
No samples In Upper Cretaceous (undifferentiated) ____ ------------------------------

40

40

110

150

Potential Water-Bearing Zones: Sand: fine to coarse-grained

10

150

TELFAIR COUNTY

Location: 588 ft. from southwest line, 410 ft. from southeast line of Land Lot 260, 7th Land District
Owner: No. 1 Henry Spurlin Driller: Parsons and Hoke Drilled: September 1953

Well No.: GGS 375 Elev.: 242 (derrick floor)

Thickness Depth

(feet)

(feet)

No samples

30

30

In Miocene (Undifferentiated):

Sand: fine to coarse-grained, subangular; interbedded clay,

pale-green, sandy

____ ------------------------------------------------- 195

225

382

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness D_!!pth

(feet)

(feet)

Limestone: white to light-gray, cream at depth, much calci-

tized, somewhat saccharoidal, nodular, fossiliferous (echi-

noid and bryozoan remains and some Foraminifera) _______

90

315

Quinqueloculina sp., Pyrgo sp., Rotalia mexicana var. at 225-240. Dictyoconus1 sp., Lepidocyclina1 sp. at 300-330.

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, much calcitized, crystalline, fossili-

ferous (echinoid and bryozoan remains and Foraminifera)

75

390

Operculinoides sp. common at 330-360. Asterocyclina sp. common at 360-390.

No samples

90

480

Limestone: cream, rather soft, chalky, somewhat granular,

fossiliferous (echinoid and bryozoan remains and Fora-

minifera)

30

510

Operculina mariannensis at 480-510.

No samples

300

810

In Middle Eocene: Claiborne Group (Undifferentiated):

Limestone: white, somewhat soft and chalky, fossiliferous

(Foraminifera)

______________

____________________________________ 60

Lepidocyclina sp. at 810-870.

No samples

474

870 1,344

In Lower Eocene and Paleocene (Undifferentiated):
Sand: medium to coarse-grained, subangular, somewhat indurated, phosphatic; some clay, dark-bluish-gray to black, laminated; considerable limestone, brownish-gray, rather dense, crystalline, coarsely glauconitic, fossiliferous (macroshells)
No samples
Sand: fine-grained to coarse-grained at depth, subangular, phosphatic; interbedded thin clay, light to dark-greenishgray to reddish-brown, laminated, silty, micaceous, lignitic
'Reworked (?) fossil of middle Eocene age.

48 1,392 88 1,480
90 1,570

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

383

Thickness (feet)

Sand: fine to coarse-grained, subangular; some limestone,

brownish-gray, rather massive, sandy, glauconitic, fossili-

ferous (some macroshells) ------------------------------------------------- _

30

Sand: fine to coarse-grained, subangular; some clay, as

above; some limestone, brownish-gray, rather dense, crys-

talline, sandy, fossiliferous (casts and impressions of mega-

fossils) __ ----------------------------------------------------------- ----

180

Robulus cf. R. midwayensis, Nodosaria a/finis, Eponides lotus?, Valvulineria scrobiculata at 1750-1780.

Sand and clay: as above but with more sand, glauconite common 30

No samples

180

Depth (feet)
1,600
1,780
1,810 1,990

In Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):

Sand: fine to coarse-grained, subangular, glauconitic; some

marl, dark-bluish-gray, chalky, micaceous, pyritiferous, fos-

siliferous (some Foraminifera) ____

90

Globotruncana sp., Cibicides harperi, Anomalina pseudopapillosa at 1990-2020.

No samples

100

Sand and clay: as above

150

Sand: fine to coarse-grained, subangular; interbedded clay,

dark-brownish-gray, laminated, silty, very micaceous, lig-

nitic

570

2,080
2,180 2,330 2,900

In Tuscaloosa Formation:

Sand: coarse-grained, subangular, arkosic, pink-colored grains

of quartz; interbedded clay, greenish-gray, laminated, mi-

caceous, carbonaceous

________________ 520

Clay: brick-red, sandy, micaceous, greasy; interbedded sand,

fine to coarse-grained, subangular, arkosic

80

Sand: medium to coarse-grained, subangular, arkosic; interbedded clay, brick-red, micaceous, sandy ______________________________ 90

3,420 3,500 3,590

Lower Cretaceous(?) (Undifferentiated):
Sand: coarse-grained, subangular, arkosic, grains of pink quartz; interbedded clay, dark-green with tan streaks to brick-red, greasy, micaceous, sandy; indurated sand, darkred, fine-grained, sideritic . ------------------------------- ___________________ 410

4,000

384

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

No samples ~~- ~~ -~~~~~~~~-~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~ -~~~~~~~~~~~~~~~~~~~~

In Miocene (undifferentiated) ~~~~~~

Oligocene (undifferentiated) ~~~~~~~~~ ~

In upper Eocene (Ocala limestone)

No samples ~ ~~~~ -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~--~ ~

In middle Eocene (Claiborne group, undifferentiated)

No samples

~~~~~~~~~~~~~~

In lower Eocene and Paleocene (undifferentiated)

No samples

In Upper Cretaceous (post-Tuscaloosa, undifferentiated)

In Upper Cretaceous (Tuscaloosa formation)

Lower Cretaceous ( ?) (undifferentiated)

Thickness Depth

(feet)

(feet)

30

3U

195

225

90

315

195

510

300

810

60

870

474 1,344

466 1,810

180 1,990

910 2,900

690 3,590

410 4,000

Limestone

Potential Water-Bearing Zones:

645

870

Remarks:
Top of Upper Cretaceous, as based on electric log, probably at approximate depth of 1870.

Location: In McRae Owner: City of McRae Driller: M. M. Gray

TELFAIR COUNTY
Well No.: GGS 507 Elev.: 250

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Sand: fine to coarse-grained, somewhat argillaceous, light-

gray to red (mottled), limonitic, arkosic ~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~- 20

20

Clay: pale-green, sandy; some sand, as above ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 20

40

Sand: fine to medium-grained, arkosic, finely disseminated

phosphatic nodules ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

~ ~~~~~~~~~~~~~~~~~ 20

60

Sand: as above; interbedded clay, pale-green, sandy; thin

limestones, white, sandy, sparsely but finely phosphatic ~~~~~~~~ 90

150

Limestone: white, dense (much calcitized), sandy, phosphatic,

fossiliferous (macroshells and some Foraminifera) ~-~~~~~~~~~~~~~~~~ 20

170

Elphidium sp., Sorites sp. at 170-175.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

385

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: light-gray to white at depth, nodular, highly cal-

citized, crystalline, sandy, fossiliferous (some echinoid and

bryozoan remains and Foraminifera) _____ _

60

Rotalia mexicana var., Gypsina globula1 at 170-180.

Lepidocyclina sp. at 210-220.

Limestone: as above but much softer, massive, fossiliferous

(echinoid and bryozoan remains, and Foraminifera) _____

30

Lepidocyclina sp., Coskinolina?1 sp., Dictyoconus1 sp. at 230-240.

Depth (feet)
230
260

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, much calcitized, crystalline, fossiliferous

at certain levels (bryozoan remains and Foraminifera)

115

375

Opmculinoides floridensis common at 260-270.

Limestone: white, dense (highly calcitized), massive, rela-

tively unfossiliferous

140

515

Miocene (undifferentiated) Oligocene (undifferentiated) Upper Eocene (Ocala limestone)

Summary:

Limestone

Potential Water-Bearing Zones:

170

170

90

260

255

515

305

515

TERRELL COUNTY

Location: Approximately 300 ft. south of Central of Well No.: GGS 213

Georgia R.R., east side of main street in Dawson

Elev.: 347

Owner: No. 3 City of Dawson

Driller: Layne-Atlantic Olmpany

Drilled: December 1950

Thkkness Depth

(feet)

(feet)

-----------------------

Residuum:

Sand: fine to coarse-grained, angular; clay, yellow to olive-

green to red (mottled), sandy, limonitic; residual lime-

stone, yellow, iron-stained, leached, cherty, fossiliferous

(bryozoan remains, occasional Ostracods and Foraminifera) __ 20

20

Rotalia byramensis var., Quinqueloculina sp. at 0-15.

'Reworked (?) fossil of middle Eocene age.

386

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Sand: fine to coarse-grained; fragments of residual lime-

stone, as above __

42

Depth (feet)
62

Middle Eocene: Claiborne Group: Lisbon Formation:

Sand: fine to coarse-grained, some indurated, fossiliferous

at depth (macroshells) ; interbedded marl, yellowish-green,

somewhat indurated, sandy, micaceous, fossiliferous (some

Foraminifera)

53

115

Cibicides westi at 62-77. Asterigerina lisbonensis at 77-92. Abundant macroshells at 92-107.

Tallahatta Formation:

Sand: fine to coarse-grained, sparsely phosphatic Cibicides tallahattensis at 128-143.

59

174

Sand: fine to coarse-grained, fossiliferous (abundant macro-

shells); some clay, gray, fissile, micaceous, carbonaceous,

mottled and bauxitic at depth_

33

207

Lower Eocene: Wilcox Group (Undifferentiated):

Limestone: gray, dense, crystalline, sandy, coarsely glauco-

nitic, fossiliferous (macroshells)

________ ___ _

4

211

Clay: dark-gray, silty, carbonaceous, micaceous, glauconitic,

fossiliferous (Foraminifera at certain levels)

64

275

Cibicides howelli, Anomalina urnbonifera at 221-236.

Sand: fine to coarse-grained, subangular, abundantly glauco-

nitic __ _

21

296

Paleocene: Midway Group: Clayton Formatio~:

Sand: fine to coarse-grained, subangular, grains of pale-green

quartz; some clay (or fuller's earth), light-gray, blocky,

somewhat indurated, micaceous__

35

331

Clay (or fuller's earth); some sand, as above

10

341

Limestone: light-gray, dense (much calcitized), sandy, coarse-

ly glauconitic, fossiliferous (macroshells, bryozoan remains,

Ostracods, and Foraminifera); interbedded clay, black, fis-

sile, carbonaceous, finely micaceous, pyritiferous, fossili-

ferous (Foraminifera)

_--------------------------------- 15

356

Robulus cf. R. degolyeri, Cibicides praecursorius, Cibicides howelli at 341-356.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

387

Limestone: as above, very sandy at depth ______ _

Thickness (feet)
129

Depth (feet)
485

Discorbis midwayensis, Robulus midwayensis, Globulina gibba var., Eponides lotus, Cibicides praecursorius at 356371.

Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):

Limestone and sand: as above; marl, bluish-gray, silty, mica-

ceous, pyritiferous, fossiliferous (macrofossils, Ostracods,

and Foraminifera)

______________ _

9

A nomalina pseudopapillosa at 485-494.

Indurated sand: fine-grained, glauconitic, micaceous, fossili-

ferous (macroshells, Ostracods, and Foraminifera); marl,

as above ______

____________________ ---------------- _______________________ _

45

Marl: bluish-gray, silty, micaceous, pyritiferous, fossiliferous

(macroshells and microfossils)

489

Planulina taylorensis at 936-952.

494
539 1,028

Summary:

Residuum _ ____________ ___ _____________ ______

______________

62

Middle Eocene (Claiborne group, undifferentiated)

----------------

145

Lower Eocene (Wilcox group, undifferentiated)

89

Paleocene (Clayton formation)

------------------------------

189

Upper Cretaceous (post-Tuscaloosa, undifferentiated)

543

Potential Water-Bearing Zones:

Sand: fine to coarse-grained -----------------------

--------------------------- 115

Sand: fine to coarse-grained ------------------------------------------------------------------ 29

Limestone

-------------------------------------------------------------------

129

62 207 296 485 1,028
207 310 485

.388

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 1.8 mi. north of Salem A.M.E. Church, 3.8 mi. south of Dawson-Smithville Highway 118
Owner: No. 1 A. P. Lane Driller: C. M. Eubanks

TERRELL COUNTY
Well No.: GGS 285 Elev.: 211

Thiel ness Depth

(feet)

(feet l

Residuum:

Sand: fine to coarse-grained, argillaceous, brick-red, limonitic . 20

20

Clay: as above, with fragments of residual limestone

20

40

Quinqueloculina sp. at 20-30.

Sand: fine to coarse-grained, angular, and fragments of resi-

dual limestone

40

80

Middle Eocene: Claiborne Group (Undifferentiated):

Sand: fine to coarse-grained, fossiliferous (macroshells) ;

some clay, pale-green, fissile, somewhat indurated, sandy,

micaceous, carbonaceous

20

100

Sand: fine to coarse-grained, angular

30

130

Summary:
Residuum Middle Eocene (Claiborne group, undifferentiated)

80

80

50

130

Potential Water-Bearing Zones: Sand: fine to coarse-grained

30

130

Location: Approximately 6 mi. southwest of Dawson, south side of Highway 82 at Graves School
Owner: No. 1 Graves School Driller: Layne-Atlantic Company Drilled: July 1953

TERRELL COUNTY
Well No.: GGS 350 Elev.: 351

Thickness Depth

(feet)

(feet)

Residuum:

Sand: fine to coarse-grained, coarser-grained at depth; inter-

bedded clay, light-gray to brick-red, very sandy, limonitic______ 56

56

Middle Eocene: Claiborne Group (Undifferentiated):

Clay: olive-green to tan to red (somewhat mottled), sandy;

sand, fine to coarse-grained

______________ _ 10

66

WELL LOGS OF THE COASTAL PLAIN OJ<' GEORGIA

389

Sand: fine to coarse-grained, somewhat indurated

T'hickness (feet)
10

Sand: fine to coarse-grained, angular

24

Sand: fine to coarse-grained, sparsely phosphatic; inter-

bedded clay, yellowish-green, fissile, sandy, micaceous

62

Depth (feet)
76 100
162

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: dark-gray, silty, carbonaceous, micaceous, pyritiferous;

interbedded, well separated, relatively thin beds of lime-

stone, gray, dense, sandy, glauconitic, fossiliferous (macro-

shells) _

----------------------------- -------- ---

80

242

Sand: fine to coarse-grained, subangular, micaceous, abun-

dantly glauconitic, more indurated with depth, fossiliferous

(some macroshells)

_________ _______ ___________________ 18

260

Paleocene: Midway Group: Clayton Formation:

Sand: fine to coarse-grained, subangular, scattered grains

of pale-green quartz; some clay, dark-gray, silty, micaceous____ 44

304

Clay (or fuller's earth): light-gray, blocky, silty, carbona-

ceous, micaceous

10

314

Limestone: light-gray, dense (much calcitized), somewhat

saccharoidal, sandy, fossiliferous (casts and molds of mega-

fossils)

_ __ ----------------- -- ----------------------------------- 19

333

Summary:

Residuum ___________________

Middle Eocene (Claiborne group, undifferentiated)

Lower Eocene (Wilcox group, undifferentiated)

Paleocene (Clayton formation)

________________ _

56

56

106

162

98

260

73

333

Potential Water-Bearing Zones:

Sand: fine to coarse-grained

Sand: fine to coarse-grained

Limestone

____________________ _

60

160

26

304

19

333

Samples of poor quality.

Remarks:

390

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: In Dawson Owner: No. 1 Dawson Cotton Mill Driller: Layne-Atlantic Company Drilled: June 1953

TERRELL COUNTY
Well No.: GGS 352 Elev.: 345

Thickness Depth

(feet)

(feet)

Residuum:

Sand: fine to coarse-grained, angular; interbedded clay, mot-

tled, sandy, limonitic; residual limestone, yellow, iron-

stained, fossiliferous (Foraminifera)

_______ _

82

82

Rotalia byramensis var., Quinqueloculina sp. at 15-23. Spiroloculina sp. at 23-33.

Middle Eocene: Claiborne Group (Undifferentiated):

Sand: fine to coarse-grained, limonitic, fossiliferous (macro-

shells at depth) ; interbedded clay, yellowish-green to cream,

sandy, fossiliferous (Foraminifera at certain horizons) ____ _ 108

190

Cibicides westi, Cibicides cf. C. refulgens at 105-125.

Abundant macroshells at 94-105.

Sand: as above __

14

204

Cibicides tallahattensis and abundant macroshells at 190201.

Lower Eocene: Wilcox Group (Undifferentiated):

Limestone: gray, extremely dense, crystalline, sandy, coarse-

ly glauconitic, fossiliferous (macroshells); some clay, dark-

gray, silty, carbonaceous, micaceous, pyritiferous __ _

24

228

Clay: as above, glauconitic and fossiliferous at depth

51

279

Eponides dorfi, Anomalina umbonifera, Cibicides praecursorius at 217-228.

Sand: fine to medium-grained, subangular, abundantly glau-

conitic, fossiliferous (macroshells and fish teeth)

31

310

Paleocene: Midway Group: Clayton Formation:

Sand: fine to coarse-grained, subangular, scattered grains of

pale-green quartz; some clay (or fuller's earth), light-gray,

silty, somewhat indurated, blocky, carbonaceous, micaceous__

20

330

Clay (or fuller's earth) : as above _

5

335

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

391

Thickness (feet)

Limestone: light-gray, dense (much calcitized), sandy, coarse-

ly glauconitic, pyritiferous, fossiliferous (macroshells,

bryozoan remains, Ostracods and Foraminifera)

98

Eponides lotus, Globulina gibba var., Anomalina midwayensis, Cibicides howelli, Cibicides praecursorius at 335-367.

Depth (feet)
433

Summary:

Residuum _____

__________________ ______________________

Middle Eocene (Claiborne group, undifferentiated) Lower Eocene (Wilcox group, undifferentiated) Paleocene (Clayton formation) _

82

82

122

204

106

310

123

433

Potential Water-Bearing Zones:
Sand: fine to coarse-grained Sand: fine to coarse-grained Limestone

75

190

41

320

98

433

Remarks:
Well cuttings of poor quality; not good enough to differentiate the Claiborne group.

Location: In Sasser Owner: City of Sasser Driller: Layne-Atlantic Company

TERRELL COUNTY
Well No.: GGS 368 Elev.: 315

Thickness Depth

(feet)

(feet)

Residuum:

Sand: fine to coarse-grained, angular, limonitic; some clay,

dark-brown, sandy, carbonaceous ---------------------------------

5

5

Clay: light-gray to red (mottled), sandy, limonitic _________

30

35

Clay: olive-green to tan, sandy; some mottled clay, as above

8

43

Clay: as above, with fragments of residual limestone, yellow

to white, much leached, fossiliferous (macroshells and bryo-

zoan remains) ___

_____________ _

21

64

Sand: fine to coarse-grained, angular _

23

87

No samples

18

105

392

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

In Middle Eocene: Claiborne Group (Undifferentiated):

Thickness (feet)

Limestone: white, sandy, progressively sandier and more cal-

citized (dense) with depth, fossiliferous (macroshells and

some Foraminifera)

70

Cibicides westi at 105-115.

Sand: fine to coarse-grained; some limestone, as above _

27

Depth (feet)
175 202

Summary:

Residuum

________________________________________________________ _

No samples __________________________________________________________

In middle Eocene (Claiborne group undifferentiated)

87

87

18

105

97

202

Potential Water-Bearing Zones:
Limestone Sand: fine to coarse-grained _____ _

70

175

27

202

Location: City of Bronwood Owner: No. 1 City of Bronwood Driller: Layne-Atlantic Company Drilled: November 1954

TERRELL COUNTY
Well No.: GGS 406 Elev.: 375

ThicLneso Depth

(feet)

(feet)

Residuum:

Sand: fine to coarse-grained, angular; some clay, light-gray

to brick-red (mottled), sandy __

10

10

Clay: white to brick-red (mottled), sandy, limonitic

24

34

Clay: chocolate, blocky, carbonaceous, sandy; fragments of

residual limestone ___

______ __ _

21

55

Sand: fine to coa1se-grained, angular; some clay, as above _

13

68

Middle Eocene: Claiborne Group (Undifferentiated):

Limestone: yellow to white, dense (much calcitized), saccha-

roidal, very sandy, fossiliferous (fragments and molds of

macroshells, echinoid remains, and some Foraminifera) ___

26

94

Clay: yellowish-green, fissile, somewhat carbonaceous, mica-

ceous, sandy, fossiliferous (Foraminifera)

10

104

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

393

Thickuess (feet)

Sand: fine to coarse-grained, angular ~~~

30

Cibicides westi at 126.

Sand: fine to coarse-grained, subangular; interbedded thin

stringers (clay partings) of clay, yellowish-green, some-

what sandy, micaceous, fossiliferous (rare Foraminifera)

104

Depth (feet)
134
238

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: dark-gray, silty, carbonaceous, micaceous, glauconitic,

pyritiferous ~~~~~ ~

~~~~.~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~ ~~ ~~~~~~~ ~~~~~~~~

8

246

Limestone: light-gray, dense, much calcitized, sandy, coarse-

ly glauconitic, fossiliferous (macroshells)

~ ~~~~~~~~~~~~~~

8

254

Clay: dark-gray, silty, carbonaceous, micaceous, pyritiferous,

glauconitic; interbedded sand, fine to medium-grained, sub-

angular, glauconitic

70

324

Indurated sand (or very sandy limestone): fine to coarse-

grained, subangular, coarsely glauconitic, fossiliferous (mac-

roshells) ~~

~~~~~~~~~~~~~~~ ~.~~~~~~~ ~ ~ ~ ~~~ ~~~ ~

6

330

Paleocene: Midway Group: Clayton Formation:

Clay: gray to red (mottled), silty, micaceous, bauxitic?~~

20

350

Sand: fine to coarse-grained, subangular, scattered grains

of pale-green quartz ~ ~

16

366

Clay (or fuller's earth) : gray, silty, blocky, carbonaceous,

micaceous

6

372

Limestone: light-gray, dense, sandy, pyritiferous, glauco-

nitic, fossiliferous (fragments and molds of megafossils,

bryozoan remains, Ostracods and Foraminifera) ; inter-

bedded clay, light-gray to black, fissile, carbonaceous, fine-

ly micaceous, fossiliferous (Foraminifera)

~~~ ~~~ ~~~~~~~~~~ 28

400

Cibicides howelli, Cibicides praecursorius, Siphonina wilcoxensis at 373-382.
Robulus degolyeri, Discorbis midwayensis var. trinitatensis, Cibicides howelli, Cibicides praecursorius, Alabamina wilcoxensis, Valvulineria scrobiculata at 382-392.

Limestone: light-gray, dense, sandy, coarsely glauconitic,

fossiliferous (fragments and molds of megafossils, bryo-

zoan remains, Ostracods and Foraminifera) ~ ~~~~~~~~~~~ ~

53

453

Robulus midwayensis, Robulus degolyeri, Eponides lotus, Discorbis midwayensis, Discorbis midwayensis var. trinitatensis, Anomalina midwayensis, Globulina gibba var. at 392-412.

394

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Summary:

Residuum ___ ______________________________

____________________

Middle Eocene (Claiborne group, undifferentiated)

Lower Eocene (Wilcox group, undifferentiated)

Paleocene (Clayton formation) ___________

____________ _

Thickness (feet)

Depth (feet)

68

68

170

238

92

330

123

453

Potential Water-Bearing Zones:

Sand: fine to coarse-grained ______________________________________________________________ _ 20

126

Sand: fine to coarse-grained ___________________

50

190

Sand: fine to coarse-grained _____________________________________

16

366

Limestone _________________________________________________________________

53

453

Location: Southeastern part of city, west side of Highway 50, in Dawson
Owner: No. 1 Matthew Williams Driller: Layne-Atlantic Company Drilled: 1954

TERRELL COUNTY
Well No.: GGS 407 Elev.: 354

Thickness Depth

(feet)

(feet)

Residuum:

Sand: fine to coarse-grained, angular; interbedded clay, mot-

tled, sandy, carbonaceous, limonitic _________________________

23

23

Sand: as above; clay, chocolate; scattered fragments of resi-

dual limestone ________________

41

64

Middle Eocene: Claiborne Group: Lisbon Formation:

Marl: yellowish-green, somewhat fissile, sandy, micaceous,

fossiliferous (some poorly preserved Foraminifera)

11

75

Spiroplectammina mississippiensis var., Textularia cuyleri, Siphonina claibornensis, Cibicides westi at 64-75.

Sand: fine to coarse-grained, angular; some limestone, yel-

low, sandy, fossiliferous (macroshells and Foraminifera) __

10

85

Limestone: yellow, dense (much calcitized), saccharoidal,

very sandy, fossiliferous (macroshells and Foraminifera) ___ _ 20

105

Asterigerina lisbonensis at 85-105.

Sand: fine to coarse-grained, angular, coarsely glauconitic,

fossiliferous (macroshells) _ . __________________

21

126

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

395

Tallahatta Formation:

Thickness (feet)

Sand: fine to coarse-grained, angular, coarsely glauconitic,

sparsely phosphatic; interbedded marl, yellowish-green, fis-

sile, sandy, micaceous, fossiliferous (Foraminifera at cer-

tain horizons) _

_________________ _______________________________

74

Cibicides tallahattensis at 126-146.
Cibicides tallahattensis, Valvulineria danvillensis var. gyroidinoides, Cibicides blanpiedi at 167-200.

Depth (feet)
200

Lower Eocene: Wilcox Group (Undifferentiated):

Limestone: gray, extremely dense and crystalline, sandy,

coarsely glauconitic, fossiliferous (some macroshells); some

clay, dark-gray, silty, carbonaceous, micaceous, pyritifer-

ous, glauconitic

___________________ __________________

28

228

Clay: dark-gray, silty, carbonaceous, micaceous, glauconitic,

pyritiferous, fossiliferous (some Foraminifera at certain

levels) _

_______________ ---------------------- __ ----- -----

62

290

Robulus u>ilcoxensis, Eponides dorfi, Anomalina umbonifera, Valvttlineria scrobiculata, Siphonina u>ilcoxensis at 228.

Paleocene: Midway Group: Clayton Formation:

Sand: fine to coarse-grained, subangular, scattered grains of

pale-green quartz; some clay, gray to red (mottled), silty,

micaceous, carbonaceous, bauxitic? ______ _

20

310

Sand: as above; some clay, dark-gray to black, somewhat

fissile, carbonaceous, micaceous

51

361

Limestone: light-gray, dense (much calcitized), somewhat

sandy, coarsely glauconitic, fossiliferous (fragments and

molds of macroshells, bryozoan remains, Ostracods, and

Foraminifera); interbedded marl, dark-gray, fissile, car-

bonaceous, finely micaceous, pyritiferous, fossiliferous

(Foraminifera)

_______________________________

____________________________ 11

372

Anomalina midu>ayensis, Robulus midu>ayensis, Globulina gibba var., Robulus alabamensis, Cibicides hou>elli at 361372.

Limestone: as above

62

434

Summary:
Residuum Middle Eocene (Lisbon formation) ________ Middle Eocene (Tallahatta formation) ________ Lower Eocene (Wilcox group, undifferentiated) Paleocene (Clayton formation) _

64

64

62

126

74

200

90

290

144

434

396

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Potential Water-Bearing Zones:

Sand: fine to coarse-grained __________________________________

95

Sand: fine to coarse-grained __________________

71

Limestone _______

------------------------------------------- -------------- __ -------------- 62

Depth (fe<>t)
200 361 434

Location: About 2 mi. southwest of Dawson Owner: No. 1 Stephen Cocke Fish Hatchery Driller: M. M. Gray and Company Drilled: September 1956

TERRELL COUNTY
Well No.: GGS 503 Elev.: 374

Thickness Depth

(feet)

(feet)

Residuum and Middle Eocene (Undifferentiated):

Sand: fine to coarse-grained, angular; some clay, light-gray

to brick-red, sandy, limonitic ________________

200

200

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: dark-gray to brown, somewhat fissile, micaceous, car-

bonaceous, abundantly glauconitic

100

300

Paleocene: Midway Group: Clayton Formation:

Sand: fine to coarse-grained, subangular, scattered grains

of pale green quartz

______________

______________ _

50

350

Clay (or fuller's earth) : dark-gray, blocky, silty, micaceous,

carbonaceous

10

360

Limestone: light-gray to white, dense (much calcitized),

sandy, coarsely glauconitic, pyritiferous, fossiliferous

(macroshells, bryozoan remains, Ostracods, and Foramini-

fera) _

_________________ ________________

_____________________________ _ 95

455

Gyroidina aequilateralis, Eponides lotus, Globulina gibba, Cibicides praecursorius at 355-365.

No samples

25

480

In Upper Cretaceous (Undifferentiated):

Marl: bluish-gray, silty, somewhat chalky, pyritiferous, mica-

ceous, fossiliferous (macroshells, Ostracods, and Foramini-

fera) ; interbedded sand, fine-grained, micaceous, pyriti-

ferous, fossiliferous (macroshells, Ostracods, and Fora-

minifera)

__________________________________________________ _

100

580

Anomalina pseudopapillosa at 480-490.

Sand: fine to coarse-grained, angular, micaceous, phosphatic

17

597

..

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

397

Summary:

Thickness (feet)

Residuum and middle Eocene (undifferentiated)

200

Lower Eocene (Wilcox group, undifferentiated) _______

100

Paleocene (Clayton formation) ______ ________________ --------------------------------- 155

No samples ___

--------------- -------------------------

25

In Upper Cretaceous (undifferentiated)

______________

117

Depth (feet)
200 300 455 480 597

Potential Water-Bearing Zones:

Sand : fine to coarse-grained____

Sand: fine to coarse-grained __________________

Limestone

____ _______

150

200

50

350

95

455

Location: 8 mi. northeast of Thomasville Owner: No. 1 U.S. Army Air Field Driller: Stevens Southern Drilling Company Drilled: September 1942

THOMAS COUNTY
Well No.: GGS 19 Elev.: 225

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, somewhat argillaceous; inclusions of kao-

lin (at depth), white, somewhat sandy _ _______________________

30

30

Miocene (Undifferentiated):

Clay: white to tan to olive-green, sandy, somewhat carbo-

naceous; fragments of limestone at depth __ _ __________

70

100

Clay: as above; some limestone, white, sandy

5

105

Limestone: white to light-brown (latter somewhat dolomi-

tized), dense, crystalline, somewhat saccharoidal, sandy_

50

155

Oligocene (Undifferentiated):

Limestone: as above, but somewhat cherty, fossiliferous at

depth

15

170

Asterigerina cf. A. subacuta at 160.

Limestone: light-gray to white at depth, nodular, much cal-

citized, fossiliferous (some macroshells, echinoid and bryo-

zoan remains, and Foraminifera) __

65

235

Rotalia mexicana var., Quinqueloculina sp. at 185. Dictyoconus1 sp. at 225.

'Reworked ( ? ) fossil of middle Eocene age.

398

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Eocene: Jackson Group: Ocala Limestone:

Thickness (feet)

Dolomitic limestone: dark-brown to rather light-brown at depth, saccharoidal ___ ------------------------------------- _______________________________ 25

Limestone: cream, considerably calcitized, somewhat crystal-

line, fossiliferous (Foraminifera); interbedded dolomitic

limestone, as above__________________________________________________________

40

Lepidocyclina sp. and Asterocyclina sp. common at 265. Gypsina globula at 280.

Depth (feet)
260
300

Summary:

Pliocene to Recent (undifferentiated) __

Miocene (undifferentiated) -------------------------------

Oligocene (undifferentiated)

__________________ _

Upper Eocene (Ocala limestone) __________________________

30

30

125

155

80

235

65

300

Potential Water-Bearing Zones: Limestone ________________________________ --------------------------------------------------------

65

300

Location: East side of Jackson Street, few hundred yd. east of Atlantic Coast Line R.R. depot at City Water Works in Thomasville
Owner: City of Thomasville Well No. 5 Driller: Layne-Atlantic Company Drilled: February 1949

THOMAS COUNTY
Well No.: GGS 132 Elev.: 256

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, argillaceous, gray to tan (mottled),

angular, finely disseminated phosphatic grains

35

35

Miocene (Undifferentiated):

Sand: fine to medium-grained, angular; some clay, light-

gray, sandy, gray to light-brown phosphatic pebbles __

5

40

Limestone: white to light-brown, somewhat dolomitized, sac-

charoidal at depth, dense, sandy, cherty, sparsely fossili-

ferous at depth --------------------------------------------------------------------------- 130

170

Archaias sp. at 150-170.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

399

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: white to cream, nodular, crystalline, much calcitized, fossiliferous (casts and impressions of megafossils and some Foraminifera) _________ ------------------------------------------------- 130

Rotalia mexicana var., Quinqueloculina sp., Dictyoconus sp. at 170-300.

Depth (feet)
300

Upper Eocene: Jackson Group: Ocala Limestone:

Dolomitic limestone: dark-brown to light-brown to white at

depth, saccharoidal, gysiferous

205

Limestone: light-gray to white, saccharoidal, dense, crystalline, much calcitized, gypsiferous at certain horizons, fossiliferous (macroshells, echinoid remains and Foraminifera)__ 200

Lepidocyclina sp., Operculinoides sp. at 505-520. Gypsina globula at 530-545. Pseudophragmina flintensis at 570-585.

Limestone: yellowish, crystalline, highly calcitized, somewhat saccharoidal, fossiliferous (Foraminifera) ______________________ 320

Camerina striatoreticulata, Amphistegina pinarensis var. at 770-790. Camerina striatoreticulata abundant at 920-945.

505 705
1,025

In Middle Eocene: Claiborne Group: Lisbon Formation:
Limestone: cream, granular, rather loosely consolidated, cherty at depth dense, crystalline, coarsely glauconitic; interbedded marl, light-gray, somewhat indurated, fissile________ 587

1,612

Tallahatta Formation:

Sand: fine to coarse-grained, angular, abundantly glauco-

nitic, fossiliferous (some Foraminifera) ____________________

23

Operculinoides sp., Asterocyclina sp. at 1612-1620.

Summary:

Pliocene to Recent (undifferentiated) _____________________ _____ ______________ 35

Miocene (undifferentiated) ------------------------------------------------- __________________ 135 Oligocene (undifferentiated) ______________ ________________________________________ 130

Upper Eocene (Ocala limestone)

______________________ _ 725

In middle Eocene (Lisbon formation) ___________________________________

587

Middle Eocene (Tallahatta formation) _______________________________

23

1 Reworked ( ?) fossil of middle Eocene age.

1,635
35 170 300 1,025 1,612 1,635

400
Limestone Limestone

GEORGIA GEOLOGICAL SURVEY BULLETIN 70 Potential Water-Bearing Zones:

Thickness Depth

(feet)

(feet)

130

300

270

770

Remarks:
Because the dolomitic limestone above carries gypsum (CaS04) crystals, it yields highly mineralized water and is, therefore, not a source of good ground water. Sand at depth 1612-1635 contained salt water with chlorides approaching that of sea water, hence is not a source of fresh ground water.

Location: In Thomasville Owner: City of Thomasville Driller: M. M. Gray Drilling Company Drilled: September 1954

THOMAS COUNTY
Well No.: GGS 401 Elev.: 2851

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, argillaceous, mottled, limonitic

10

10

Sand: fine-grained, argillaceous, olive-green to tan; with in-

clusions of kaolin, white, sandy

25

35

Miocene (Undifferentiated):

Clay: white to light-gray to pale-green, sandy, phosphatic ______ _ 15

50

White to light-gray phosphatic pebbles prominent at 40-50.

Limestone: white, dense, sandy, cherty; interbedded sand,

fine to medium-grained, angular; beds of clay, white to

light-gray to pale-green, sandy, phosphatic _____________

50

100

Limestone: light-brown, somewhat dolomitized and saccha-

roidal, dens~, crystalline, sandy, fossiliferous (casts and

molds of megafossils); interbedded clay, as above _________ _ 80

180

Oligocene (Undifferentiated):

Limestone: light-gray to white, dense, nodular, much calci-

tized, fossiliferous (some Foraminifera at various horizons)__ 115

295

Asterigerina subacuta at 180-190. Dictvoconus 2 sp. at 280-290.

1Average elevation based on Georgia State Highway Maps. 2Reworked (?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

401

Upper Eocene: Jackson Group: Ocala Limestone: Dolomitic limestone: dark-brown, saccharoidal, massive

Thickness Depth

(feet)

(feet)

105

400

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) __ _ Oligocene (undifferentiated) Upper Eocene (Ocala limestone) ___ _

35

35

145

180

115

295

105

400

Limestone

Potential Water-Bearing Zones:

115

295

Location: Approximately 7 mi. south of Meigs Owner: No. 1 Waverly Petroleum Products Company Driller: Layne-Atlantic Company Drilled: 1955

THOMAS COUNTY
Well No.: GGS 495 Elev.: 384

Thicknes.::; ffeet)

Depth (feet)

No samples ________________

10

10

In Miocene (Undifferentiated): Clay: bluish-gray to purple (mottled), sandy, limonitic

5

15

Clay: yellowish-green, very sandy; some mottled clay, as above 13

28

No samples

9

87

Sand: fine to medium-grained, angular

23

60

Clay: yellowish to dark-green, somewhat indurated, tough,

phosphatic at depth, sandy; interbedded thin beds of sand,

fine to medium-grained, angular

107

167

Light-brown phosphatic pebbles common at 126-147.

Limestone: white to gray to light-brown, dense, somewhat

crystalline and saccharoidal, much calcitized, sandy

226

393

Limestone: as above but much sandier, phosphatic ____

41

434

Sand: fine to coarse-grained, angular; clay, gray to yellowish-

green, somewhat fissile, carbonaceous; limestone, as above______ 82

516

402

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene and Upper Eocene (Undifferentiated):

Thickness \feet)

Dolomitic limestone: light-brown, saccharoidal ------------------------------ 287

Pyrgo? sp. at 603-618. Rotalia mexicana var. at 680-700.

Limestone: cream, much calcitized, granular, rather loosely

consolidated and porous, fossiliferous (some "small" Fora-

minifera) ___

_________ _________________

--------------------------------- 102

Cibicides ocalanus, Uvigerina dumblei at 803-823.
Robulus alato-limbatus, Siphonina jacksonensis, Uvigerina dumblei, Dentalina jacksonensis at 823-844.

Depth (feet)
803
905

Summary:
No samples ___________________________________ In Miocene (undifferentiated) _ Oligocene and upper Eocene (undifferentiated) _

10

10

506

516

389

905

Limestone

Potential Water-Bearing Zones:

102

905

Remarks:
The limestone section represented by this well is composed largely of dolomitic limestone which yields mineralized water. Hence, this area presents a problem in searching for satisfactory aquifers. There seem to be two possibilities in the solution of this problem, both requiring careful exploration however. The shallower-lying limestones of Miocene age may carry some ground water. Likewise the limestones occurring below 800 feet might deserve further development. However it is known that the mineralization of ground water in this area increases with depth.

Location: About 1 mi. east of Tifton Owner: No. 1 Armour and Company Driller: Layne-Atlantic Company Drilled: June 1945

TIFT COUNTY
Well No.: GGS 82 Elev.: 330

Thickness Depth

(feet)

(feet)

No samples _________________________________ --------------------------------------------------------- 10

10

In Miocene (Undifferentiated):

Clay: mottled, sandy, limonitic ______ -------------------------------------------------- 5

15

r

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

403

Thickness (feet)

Clay: light-gray, sandy; interbedded sand, fine to coarse-

grained, angular ________________

________________________________________

92

Clay: dark-green, sandy _____

17

Limestone: white, dense, crystalline, sandy; interbedded beds

of clay, dark-green, sandy ___________

132

Sorites sp. at 215-216.

Depth (feet)
107 124
256

Oligocene (Undifferentiated):

Limestone: cream to white at depth, nodular, much calcitized,

massive, fossiliferous (some macroshells, echinoid and bryo-

zoan remains and Foraminifera) __________ ______________________

119

375

Rotalia mexicana var., Pyrgo sp., Quinqueloculina sp. at 256-264. Operculinoides sp., Dictyoconus1 sp. at 260-276. Dictyoconus1 sp. common at 347-357.

No samples ______ _

21

396

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, crystalline, somewhat calcitized, fossilifer-

ous (macroshells, echinoid and abundant bryozoan remains,

and common to abundant Foraminifera)_

105

501

Asterocyclina sp., Gypsina globula common at 396-419. Operculinoides floridensis, Heterostegina ocalana at 459.

Summary:
No samples ________________________ In Miocene (undifferentiated) Oligocene (undifferentiated) __ No samples ___________ In upper Eocene (Ocala limestone) _

10

10

246

256

119

375

21

396

105

501

Potential Water-Bearing Zones:

Limestone ____________ ---------------------------------------------- _______________________________________ 241

501

-'Reworked ( ? ) fossil of middle Eocene age.

404

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: At City Water Works in Tifton Owner: City of Tifton Driller: Stevens Southern Well Drilling Company

TIFT COUNTY
Well No.: GGS 292 Elev.: 355

Thickness Depth

(feet)

(feet)

No samples

20

20

In Miocene (Undifferentiated):

Clay: mottled, sandy, limonitic _______________

20

40

Clay: yellowish-green, sandy; interbedded sand, fine to me-

dium-grained, angular ______

--------------------------------- ______ _________ 90

130

No samples

10

140

Clay: as above; interbedded limestone, white, dense, calcitized,

sandy _______

------------------------------------------------------------------------------- 50

190

Limestone: white, dense, somewhat crystalline and saccha-

roidal, sandy _________________________ ----------------------------------------------------------- 80

270

Oligocene (Undifferentiated):

Limestone: yellow to white at depth, nodular, cherty, rather

massive, somewhat sandy, fossiliferous (some macroshells,

echinoid and bryozoan remains, and Foraminifera) __

70

340

Rotalia mexicana var. at 270-280.

Lepidocyclina sp., Gypsina globula1 at 300-310.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, highly calcitized and crystalline, fossili-

ferous at certain levels (echinoid and bryozoan remains and

some Foraminifera) ____

___ ----------------------------------------------------- 200

540

Gypsina globula common, Operculinoides sp., Lepidocyclina sp., and bryozoan remains at 340-350.

Operculinoides floridensis at 390-400.

Asterocyclina nassauensis at 420-430.

Limestone: light-gray, crystalline and saccharoidal, highly

calcitized

---------------------------------- 45

585

No samples In Miocene (undifferentiated) Oligocene (undifferentiated) __ Upper Eocene (Ocala limestone)

Summary:

1 Reworked ( ?) fossil of middle Eocene age.

20

20

250

270

70

340

245

585

Limestone

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

405

Potential Water-Bearing Zones:

Thickness Depth

(feet)

(feet)

230

540

Location: 4.5 mi. south of R.R. in Lyons via U.S. Highway 1, 1.4 mi. west of Highway 1 via east-west dirt road on north side of said road at top of prominent hill
Owner: No. 1 Gibson Driller: Tropic Oil and Gas Company Drilled: June 1945

TOOMBS COUNTY
Well No.: GGS 95 Elev.: 198

Thickness Depth

(feet)

(feet)

No samples

375

375

In Miocene (Undifferentiated):

Limestone: white, somewhat recrystallized, calcitized; sand,

phosphatic; some clay, pale-green, sandy

10

385

No samples __ ------------------------------------------------------------------------------------------ 15

400

Sand: fine to medium-grained, subangular, phosphatic; some

clay, as above; limestone, white, sandy, phosphatic, fos-

siliferous ( macroshells)

---------------------------

48

448

Oligocene (Undifferentiated):

Limestone: gray, extremely dense, crystalline, cherty, sandy,

sparsely phosphatic, fossiliferous (echinoid and bryozoan

remains)

------------------------------------------------ 1

449

Limestone: reddish-brown, rather soft and chalky, fossilifer-

ous (echinoid and bryozoan remains and Foraminifera)

37

486

Rotalia mexicana var., Quinquelomilina sp. at 449-456.

No samples_

20

506

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: reddish-brown, soft and somewhat chalky, very

fossiliferous at certain levels (echinoid and bryozoan re-

mains and "larger" Foraminifera) ___

_____________ _

128

634

Camerina striatoreticulata common to abundant, Lepidocyclina sp. at 512-520.

406

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Limestone: cream, soft, fossiliferous ("larger Foraminifera"

and bryozoan remains)

126

Lepidocyclina sp. common at 634-662. Operculina mariannensis at 740-750.

Depth (feet)
760

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: light-gray, calcitized and granular, somewhat

loosely consolidated, glauconitic at depth, fossiliferous at

certain levels (megafossils, echinoid and bryozoan remains,

and some Foraminifera) ; interbedded dolomitic limestone,

gray, saccharoidal, glauconitic at depth__

________________________ 330

Asterigerina sp., Nonion advena, Nonion inexcavatus, Discorbis assulata, Gyroidina soldanii var., Cibicides americanus var. at 760-770.

Glauconite common at 1033-1088.

1,090

Tallahatta Formation:

Limestone: as above; interbedded sand, fine to medium-

grained, subangular, coarsely glauconitic; limestone, white,

rather massive, coarsely glauconitic, fossiliferous (frag-

ments, casts and molds of megafossils) ___

90

Sand: fine to medium-grained, subangular, phosphatic, some-

what indurated at certain levels

____ ____ ___ 130

1,180 1,310

In Lower Eocene(?): Wilcox Group (Undifferentiated):

Clay: dark-gray, somewhat indurated and fissile, micaceous,

carbonaceous, glauconitic, fossiliferous (megafossils and

some Foraminifera) ; interbedded thin beds of claystone,

dark-gray, dense, abundantly glauconitic, cherty; beds of

sand, as above__ _

145

1,455

Paleocene: Midway Group: Clayton Formation:

Limestone: light-gray, dense, crystalline, sandy, coarsely

glauconitic, fossiliferous at certain levels (macroshells

with bryozoan remains) ; interbedded clay, dark-gray to

black, somewhat fissile, carbonaceous, micaceous _________ . _

90

Sand: medium-grained, angular; interbedded clay, as above

155

1,545 1,700

Upper Cretaceous(?) (Undifferentiated):

Sand: fine to coarse-grained, angular; clay, dark-gray, some-

what fissile, micaceous, pyritiferous__

151

1,851

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

407

Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):

Thickness (feet)

Sand: fine to medium-grained, angular; interbedded clay, dark-gray, micaceous, pyritiferous, fossiliferous at certain horizons (Foraminifera) _____ --------------------------------------- ____________________ 149

Anomalina pseudopapillosa at 1851-1856. Planulina taylorensis at 2157-2162.

Marl: dark-gray to brown at depth, silty, carbonaceous, micaceous, pyritiferous, fossiliferous at certain horizons (macroshells and Foraminifera)------------------------------------------------------------------ 358

Marl: as above; interbedded sand, fine to medium-grained, an-

gular, glauconitic, phosphatic, fossiliferous at certain hori-

zons (macroshells) ________

_---------------------------------------------------- 262

Sand: fine to medium-grained, angular, phosphatic, somewhat

indurated, fossiliferous (macroshells)

50

Depth (feet)
2,000
2,358 2,620 2,670

Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, arkosic; relatively thin stringers of clay, gray to pale-green, somewhat fissile, ironstained, micaceous, sandy ________ ------------------------------- _______________ 130

Clay or shale: gray, carbonaceous, micaceous having a some-

what speckled appearance; interbedded sand, fine to coarse-

grained, angular, arkosic __ ______________

130

Sand: fine to coarse-grained, angular

91

Sand: coarse-grained, angular, arkosic, rather massive; in-

terbedded clay, green to red (mottled), micaceous, sideritic,

sandy --------------------------------------

_____________ _

489

2,800
2,930 3,021
3,510

Lower Cretaceous(?) (Undifferentiated):

Clay: mottled, waxy, highly micaceous, sandy; interbedded

sand, fine to coarse-grained, angular, arkosic

. ____________ 153

Sideritic nodules common at 3552-3562.

3,663

Basement Complex (Undifferentiated): Crystalline rocks ______ _______________ _

Summary:

No samples _

In Miocene (undifferentiated) _____ _

Oligocene (undifferentiated) _____ _

No samples _____________

____________________________________________

In upper Eocene (Ocala limestone)

17 3,680

375

375

73

448

38

486

20

506

254

760

408

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Middle Eocene (Lisbon formation) __________________________________________________ 330

Middle Eocene (Tallahatta formation) ________________ ------------------------

220

In lower Eocene ( ?) (Wilcox group, undifferentiated) __ _

145

Paleocene (Clayton formation)

_________ _

--- 245

Upper Cretaceous (?) (undifferentiated) _______________

151

Upper Cretaceous (post-Tuscaloosa, undifferentiated) _________ ---------- 819

Upper Cretaceous (Tuscaloosa formation)

840

Lower Cretaceous ( ?) (undifferentiated) _____________________

153

Basement complex (undifferentiated)

17

Depth (feet)
1,090 1,310 1,455 1,700 1,851 2,670 3,510 3,663 3,680

Potential Water-Bearing Zones:

Limestone

_______________________ _

Sand: fine to medium-grained ___________

Sand : medium-grained ___ ________________

310

760

130 1,310

135 1,680

Location: 6 mi. west of Soperton, Land Lot 221, Ga. Military District 1386
Owner: No. 1 James Fowler Driller: Rose and Ray Drilled: 1940

TREUTLEN COUNTY
Well No.: GGS 127 Elev.: 291

Thickness Depth

(feet)

(feet)

No samples

765

765

In Middle Eocene: Claiborne Group (Undifferentiated):

Limestone: light-gray to white, dense, crystalline, sandy,

phosphatic (finely disseminated), coarsely glauconitic, fos-

siliferous (fragments, casts and molds of megafossils, Os-

tracods and Foraminifera) _

130

895

Nonion advena, Gyroidina soldanii var., Eponides jacksonensis, Non-ion inexcavatus, Cibicides pseudoungerianus, Cibicides americanus var. at 765-815.
Lepidocyclina (Polylepidina) antillea, Asterigerina sp. at 815-825.
Aste?ocuclina rnon ticellensis at 835-855.

Indurated sand: dark-gray, somewhat argillaceous, dense,

phosphatic (finely disseminated), carbonaceous, micaceous,

fossiliferous (some Foraminifera)

20

915

Cibicides blwnpiedi at 895-915.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

409

Thickness (feet)
Limestone: gray, dense, crystalline, sandy, coarsely glaucon-

itic; interbedded marl, light-gray, silty, micaceous, carbon-

aceous, glauconitic (finely disseminated), fossiliferous

(some Foraminifera) __ _

30

Reussel/a subrotundata, Cibicides mau1icensis at 915-935.

Indurated sand: as above, but fossiliferous (a coquina) __

20

No samples

20

Limestone: gray, dense, coarsely glauconitic, sandy, fossilifer-

ous (abundant macroshells and some Foraminifera).

20

Sand: fine to coarse-grained, phosphatic_

80

Depth (feet)
945
965 985 1,005 1,085

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: dark-gray, somewhat fissile, silty, lignitic, micaceous;

interbedded sand, fine to medium grained _

170 1,255

Siphonina prima at 1165-1185.

Paleocene: Midway Group: Clayton Formation:

Limestone: gray to white at depth, dense, crystalline, sandy,

coarsely glauconitic, fossiliferous (casts and molds of mega-

fossils, bryozoan remains, and Foraminifera) _____________ _

40 1,295

Robulus sp., Discorbis midwayensis, Discorbis midwayensis var. trinitatensis, Sigmomorphina semitecta var., Valvulineria scrobiculata, Eponides lotus, Siphonina wilcoxensis, Cibicides howelli at 1275-1295.

Sand: fine to coarse-grained

20 1,315

In Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):

Sand: as above; some clay, chocolate-brown to dark-gray, mi-

caceous, somewhat fissile__

__________________ _

20

Sand: fine to coarse-grained, angular, arkosic, grains of "rose

quartz"

80

No samples

140

Clay: brown, carbonaceous, very micaceous, pyritiferous, fos-

siliferous (macroshells and Foraminifera at certain levels) ;

interbedded sand, fine to coarse-grained, angular__

320

Planulina taylorensis at 1695-1715. Kyphopyxa christneri at 1795-1815.

Sand: fine to coarse-grained, angular, highly micaceous, abun-

dantly phosphatic; interbedded shale, dark-gray, fissile, mi-

caceous (finely disseminated, "speckled")

130

No samples

30

1,335 1,415 1,555 1,875
2,005 2,035

410

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

In Tuscaloosa Formation:

Thickness (feet)

Sand: fine to coarse-grained, angular; interbedded clay, yellowish-green, fissile, micaceous, somewhat carbonaceous_______ 90

Depth (feet)
2,125

Summary:

No samples __

-------------------------------------------------

765

In middle Eocene (Claiborne group, undifferentiated)______________________ 320

Lower Eocene (Wilcox group, undifferentiated)__________

170

Paleocene (Clayton formation)___________________________________________

60

In Upper Cretaceous (post-Tuscaloosa, undifferentiated)_____

690

No samples ___________________ ____________________ ____________________

30

In Upper Cretaceous (Tuscaloosa formation)_

90

765 1,085 1,255 1,315 2,005 2,035 2,125

Potential Water-Bearing Zones:
Sand: fine to coarse-grained___ Sand: fine to coarse-grained___

80 1,085 80 1,415

Remarks:
The Ocala limestone lies somewhere in the interval 0-765 and constitutes an additional source of ground water besides being at a much shallower depth below land surface datum than the aquifers noted above.

Location: 0.7 mi. northwest of Coverdale Owner: No. 1 C. W. Dearso Driller: Winter Hardware Company Drilled: October 1942

TURNER COUNTY
Well No.: GGS 2 Elev.: 413

Thickness Depth

(feet)

(feet)

No samples ___

10

10

In Miocene (Undifferentiated):

Clay: gray, sandy; interbedded sand, fine to coarse-grained,

angular _____

_________________

_____________________________

70

80

Clay: yellowish-green, sandy; interbedded sand, as above ___

155

235

Oligocene (Undifferentiated):

Limestone: white, dense, nodular, calcitized, fossiliferous

(bryozoan remains and some Foraminifera)__ ___________________ 25

260

Rotalia mexicana var. at 240-260.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

411

Summary:
No sampies -------------------------------------- ---------------------------------------------------In Miocene (undifferentiated) ____ Oligocene (undifferentiated) ____ _

Thickness (feet)
10 225 25

Depth (feet)
10 235 260

Potential Water-Bearing Zones: Limestone __________________ ------------------------------- ----------------------------------

25

260

Location: 1,6 mi. northwest of Coverdale on State Highway 112
Owner: No.1 J. W. Hallman Driller: Winter Hardware Company Drilled: October 1942

TURNER COUNTY
Well No.: GGS 13 Elev.: 399

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: mottled, sandy, limonitic_

100

100

Clay: yellowish-green, sandy; interbedded sand, fine to coarse-

grained, angular, arkosic____

80

180

Limestone: white, dense, sandy_

20

200

In Oligocene (Unrlifferentiated):

Limestone: white, dense, nodular, recrystallized, fossiliferous

(some Foraminifera) _____________ _

40

240

Rotalia mexicana var., Asterigerina subacuta at 200-220.

Summary:
Miocene (undifferentiated) _______ In Oligocene (undifferentiated) ___

200

200

40

240

Limestone ________

Potential Water-Bearing Zones:

40

240

412

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 4 mi. southwest of Ashburn on Highway 112, Land Lot 50, 2nd Land District
Owner: No.1 W. B. Hobby Driller: W. B. Graham Drilled: 1947

TURNER COUNTY Well No.: GGS 164

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: mottled, sandy, limonitic__

30

30

Clay: light-gray, sandy; interbedded sand, fine to coarse-

grained, angular _ _________________________

-------------------------------- 60

90

Clay: dark-green, sandy, somewhat indurated at certain levels__ 90

180

Limestone: white, dense, sandy__

20

200

Oligocene (Undifferentiated):

Limestone: white, nodular, recrystallized, much calcitized, fos-

siliferous (some Foraminifera) __ _

120

320

Rotalia mexicana var., Pyrgo sp., Gypsina globulal, Dictyoconus1 sp. at 200-210. Asterigerina subacuta at 250-260. Lepidocyclina sp. at 300-310.

Summary:

Miocene (undifferentiated) ______

_______________ _

0 ligocene (undifferentiated) ----------------------------------- ____

200

200

120

320

Limestone

Potential Water-Bearing Zones:

120

320

Location: 3.75 mi. (map distance) northwest of Ashburn, near Highway 7 on county side road
Owner: No.1 V. H. Burke Driller: H. B. Truluck

TURNER COUNTY
Well No.: GGS 210 Elev.: 386

Thickness Depth

(feet)

(feet)

No samples_

35

35

In Miocene (Undifferentiated):

Clay: light-gray, sandy; interbedded sand, fine to coarse-

grained, angular, arkosic_ _______________

______________ _

70

105

'Reworked(?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

413

Thickness (feet)

Limestone: cream, sandy, cherty at certain levels; some clay,

yellowish-green, sandy ___

____________________________ _

30

Clay: yellowish-green, sandy, somewhat indurated_____

10

Depth (feet)
135 145

In Oligocene (Undifferentiated):

Limestone: white, dense, crystalline, calcitized, fossiliferous

(macroshells, bryozoan remains, and some Foraminifera)_

40

185

Asterigerina sp. at 145-155. Rotalia rnexicana var. at 155-165.

No samples __

40

225

Limestone: as above, but more calcitized; some sand, fine to

medium-grained, angular ___ ---------------------------------------------------- ?

225

Summary:

No samples ___

________ _

In Miocene (undifferentiated) __

In Oligocene (undifferentiated) ___

35

35

110

145

80

225

Limestone

Potential Water-Bearing Zones:

40

185

Location: In Ashburn Owner: No. 1 Manhattan Shirt Company Driller: M. M. Gray Drilling Company Drilled: 1958

TURNER COUNTY
Well No.: GGS 557 Elev.: 430

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: pale-green to tan to purple to red (mottled), sandy,

limonitic; interbedded sand, fine to coarse-grained, angular,

arkosic

_________________ ____________________ 190

190

Clay: pale-green, blocky, sandy; interbedded sand, as above;

limestone, white, sandy_ _______ ------------------------------ _________________ 90

280

414

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: white to cream, nodular, massive, much calcitized,

fossiliferous (some megafossils, bryozoan remains, and

Foraminifera) _______________________ ------------------------------------ _

105

Asterigerina subacuta, Gypsina globula1 at 280-290. Rotalia mexicana var. at 290-300. Lepidocyclina sp. at 300-310.

Depth (feet)
385

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream to light-brown, somewhat dolomitized at

certain levels, much ealcitized, granular, fossiliferous (com-

mon to abundant bryozoan remains and Foraminifera)

140

525

Lepidocyclina chaperi at 385-395. Robulus sp., Eponides jacksonensis, Gypsina globula, Lepidocyclina chaperi at 395-405.

Sand: fine to coarse-grained, angular; limestone, white to

cream-colored, somewhat granular and calcitized, fossilifer-

ous ("larger Foraminifera")__

__ ___________ _______________ 30

555

Asterocyclina sp. at 525-535.

Limestone: cream, rather soft and porous, granular, much cal-

citized, fossiliferous ("larger Foraminifera")_

______________ 110

665

Operculina cf. 0. mariannensis, Camerina striatoreticulata at 555-565. Amphistegina pinarensis var. at 575-585. Asterocyclina sp. common at 635-645.

No samples_

5

670

In Middle Eocene: Claiborne Group: Lisbon Formation:

Marl: light-gray, silty, micaceous, fossiliferous (some Fora-

minifera at certain levels); interbedded limestone, dark-

green, massive, dense, crystalline, coarsely glauconitic at

depth, pyritiferous, fossiliferous (megafossils and some

bryozoan remains)

_--------------------------------- _________________________ 80

750

Operculinoides sp., Cibicides pseudoungerianus var. lisbon.ensis at 670-680.

Sand: fine to coarse-grained, angular, phosphatic; some marl

and limestone, as above________________________________ ------------------------------------ 20

770

'Reworked(?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

415

Summary:

Miocene (undifferentiated)

Oligocene (undifferentiated) ______

Upper Eocene (Ocala limestone) ______

No samples ____

_______________________________ _

In middle Eocene (Lisbon formation) ______

Thickness Depth

(feet)

(feet)

280

280

105

385

280

665

5

670

100

770

Potential Water-Bearing Zones:
Limestone Limestone Sand: fine to coarse-grained __ _

245

525

110

665

20

770

Location: In Ashburn Owner: City of Ashburn Driller: Layne-Atlantic Company Drilled: July 1957

TURNER COUNTY
Well No.: GGS 565 Elev.: 430

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: mottled, blocky, sandy, limonitic; interbedded sand, fine

to coarse-grained, subangular, arkosic_____

___________________ 87

87

Clay: as above, but somewhat indurated, tough; sand, as above__ 125

212

Oligocene (Undifferentiated):

Limestone: white, somewhat nodular, massive, recrystallized

and saccharoidal, fossiliferous (some macroshells, echinoid

and bryozoan remains, and Foraminifera)

63

275

Asterigerina subacuta, Quinqueloculina sp., Dictyoconus1 sp. at 212-230. Rotalia mexicana var. common at 230-232. Gypsina globula1 at 260-270.

Limestone: cream, massive, calcitized, somewhat nodular,

cherty, relatively unfossiliferous

__________________ _

115

390

'Reworked ( ?) fossil of middle Eocene age.

416

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

In Upper Eocene: Jackson Group: Ocala Limstone:

Thickness (feet)

Limestone: cream, calcitized, granular (in texture), fossil-

iferous at certain levels (bryozoan remains and Foramini-

fera)

260

Lepidocyclina chaperi at 397-419. Lepidocyclina ocalana at 541-551. Amphistegina pinarensis var. at 582-595.

Depth (feet)
650

Summary:
Miocene (undifferentiated) Oligocene (undifferentiated) In upper Eocene (Ocala limestone) __

212

212

178

390

260

650

Limestone

Potential Water-Bearing Zones:

438

650

Location: Approximately 3.5 mi. east of Huber, 2.5 mi. east of U.S. Highway 129, and 1.5 mi. south of a crossroads at machine shop
Owner: J. M. Huber Company Driller: Southeastern Drilling Company Drilled: August 1953

TWIGGS COUNTY
Well No.: GGS 354 Elev.: 507

Thickness Depth

(feet)

(feet)

Upper Eocene: Jackson Group: Barnwell Formation:

Clay: red, very sandy, limonitic_____

20

20

Clay: yellowish-green, carbonaceous, blocky__

30

50

Limestone: white, somewhat leached, sandy at depth, fossil-

iferous (macroshells, echinoid and abundant bryozoan re-

mains)

______________ ---------------------------------------------------------------- 40

90

Sand: fine to coarse-grained, angular; inclusions of kaolin,

white, micaceous

_________ . ____________ _

20

110

Upper Cretaceous: Tuscaloosa Formation:

Sand: fine to coarse-grained, angular_____

30

140

Kaolin: white to dark-gray, micaceous, carbonaceous, sandy______ 20

160

Sand : fine to coarse-grained, angular__

25

185

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

417

Summary:
Upper Eocene (Barnwell formation) ____________________ Upper Cretaceous (Tuscaloosa formation) _________

Thickness Depth

(feet)

(feet)

110

110

75

185

Potential Water-Bearing Zones: None because static water level is below total depth of well.

Location: Few hundred yards south of Well 354 Owner: J. M. Huber Company Driller: Layne-Atlantic Company Drilled: October 1953

TWIGGS COUNTY
Well No.: GGS 360 Elev.: 470

Thickness Depth

(feet)

(feet)

Upper Eocene: Jackson Group: Barnwell Formation: Clay: olive-green to red (mottled), very sandy, limonitic Clay: yellowish-green, sandy; fragments of limestone_________ Limestone: white, very sandy Sand: fine to coarse-grained, somewhat arkosic

15

15

17

32

14

46

60

106

Upper Cretaceous: Tuscaloosa Formation:

Sand: fine to coarse-grained, angular; interbedded clay (or

kaolin) __________________ ______ ____ _________ __ __ ______________ __________________ _____ 230

336

Kaolin: white, micaceous _

6

342

Summary:
Upper Eocene (Barnwell formation) __ Upper Cretaceous (Tuscaloosa formation)_

106

106

236

342

Potential Water-Bearing Zones:

Sand: fine to coarse-grained________

60

260

Sand: fine to coarse-grained_________________

31

305

Sand: fine to coarse-grained _______________ -------------------------------------------- 18

336

Well samples of poor quality.

Remarks:

418

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Approximately 1 mi. south of Dry Branch, 1.5 mi. east of U.S. Highway 80
Owner: Georgia Kaolin Company Driller: Layne-Atlantic Company Drilled: March 1955

TWIGGS COUNTY
Well No.: GGS 415 Elev.: 430

Thickness Depth

(feet)

(feet)

Upper Eocene: Jackson Group: Barnwell Formation: Sand: fine to medium-grained, gray, argillaceous _ Sand: fine to coarse-grained, angular, somewhat arkosic

24

24

20

44

Upper Cretaceous: Tuscaloosa Formation: Kaolin: micaceous, somewhat sandy______ _ Sand: fine to coarse-grained, angular, arkosic _ Kaolin: mottled, micaceous, somewhat sandy__ Sand: coarse-grained, angular; kaolin, white__ _____________ Clay: brick-red, micaceous, sandy_ __________ __ ___ Sand: fine to coarse-grained, angular, arkosic.

21

65

117

182

12

194

14

208

23

231

141

372

Summary:
Upper Eocene (Barnwell formation)_ Upper Cretaceous (Tuscaloosa formation)

44

44

328

372

Potential Water-Bearing Zones:

Sand: fine to coarse-grained______________________ ----------------------------------------- 100

331

Well samples of poor quality.

Remarks:

TWIGGS COUNTY

Location: Northeastern part of county, 1.75 mi. southeast Well No.: GGS 416 of Liberty Church which is 0.75 mi. east of Myerick's Pond Elev.: 380
Owner: No. 23 Georgia Kaolin Co. Driller: Layne-Atlantic Company Drilled: March 1955
Thickness Depth
-------------------------------------------------If-eet) (feet)

Upper Eocene: Jackson Group: Barnwell Formation:

Clay: mottled, very sandy, limonitic______________________________________ 6

6

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

419

Thickness (feet)
Marl: light-gray, silty, glauconitic__________________________________________________ 17

Depth (feet)
23

Sand: fine to coarse-grained, angular, phosphatic; interbedded

marl, as above__

______________ _____________________ _______________________ 45

68

Sand: fine to coarse-grained, angular _

22

90

Upper Cretaceous: Tuscaloosa Formation:

Clay: light-gray, sandy, micaceous_____________

10

100

Sand: fine to coarse-grained, angular, somewhat arkosic;

interbedded clay, as above_____________________________________________________________ 85

185

Sand: coarse-grained, angular, arkosic; interbedded thin beds

of kaolin

-------------------------------------------------------------------------------- 248

433

Summary:
Upper Eocene (Barnwell formation) Upper Cretaceous (Tuscaloosa formation) ________

90

90

343

433

Potential Water-Bearing Zones:

Sand: fine to coarse-grained__

--------- 228

413

Well samples of poor quality.

Remarks:

Location: At Airport, City of Waycross Owner: No.1 Waycross Airport Driller: Layne-Atlantic Company

WARE COUNTY
Well No.: GGS 36 Elev.: 142

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, finely disseminated phosphatic

grains __

15

15

Clay: pale-green to red (mottled), sandy_________________________

10

25

Sand: medium to coarse-grained, arkosic__________________________________________ 17

42

Sand: as above; clay, tan to red (mottled), sandy; fragments

of limestone, light-gray, dense, sandy_ ---------------------- ___________________ 20

62

Miocene (Undifferentiated):

Clay: dark-green, sandy; interbedded sand, fine to coarse-

grained, phosphatic __ __ _ _ _________ -----------------------------------------

265

327

420

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Sand: fine to coarse-grained, phosphatic_________________________________________ 50

Sand: as above; interbedded limestone, white, sandy; clay, dark-green, sandy, phosphatic________________________________________________________ 63

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic ----------------------------------------- --------------------------------------------------

50

Depth (feet)
377
440
490

Oligocene (Undifferentiated):

Limestone: light-gray, dense (much calcitized), nodular, fos-

siliferous (some Foraminifera)

-------------------------------

8

498

Dictyoconus1 sp. at 490-498.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, much calcitized, saccharoidal, fossiliferous

(Foraminifera)

--------------------------------------

123

621

Gypsina globula, Operculinoides floridensis at 550-560. Asterocyclina nassauensis at 570-580.

Summary:
Pliocene to Recent (undifferentiated) __ Miocene (undifferentiated) _____ _ Oligocene (undifferentiated) ____ _ Upper Eocene (Ocala limestone) ______ _

62

62

428

490

8

498

123

621

Potential Water-Bearing Zones:
Sand: fine to coarse-grained__ Limestone _

50

377

131

621

Location: In City of Waycross Owner: No.3 City of Waycross Driller: Layne-Atlantic Company

WARE COUNTY
Well No.: GGS 366 Elev.: 140

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, finely disseminated phosphatic

grains and scattered kaolin inclusions______________________________________ 10

10

Sand: fine to coarse-grained, arkosic, rounded; clay, light-

gray to red (mottled), sandy______________

_______________

15

25

Clay: pale-green to purple (mottled), sandy____ ----------------------------- 15

40

Sand: fine to coarse-grained, arkosic, rounded______________________________ 25

65

1Reworke<1( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

421

Miocene (Undifferentiated):

Thickness Depth

(feet)

(feet)

Clay: dark-green, sandy; interbedded sand, fine to coarse-

grained, phosphatic _________

135

200

Sand: fine to coarse-grained, phosphatic__ _

50

250

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic; interbedded limestone, white, sandy; sand, fine to

coarse-grained, phosphatic

90

340

Clay: light-gray, calcareous __

20

360

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic; interbedded limestone, white, sandy; sand, fine to

coarse-grained, phosphatic _______

_________________ _______________ 70

430

Limestone: white, dense (much calcitized), sandy, phosphatic,

fossiliferous (fragments and molds of megafossils)_

60

490

Oligocene (Undifferentiated):

Limestone: light-gray, dense (much calcitized), nodular, fos-

siliferous (some Foraminifera) __

20

510

Dictyoconus1 sp., Quinqueloculina sp. at 490-500.

Upper &cene: Jackson Group: Ocala Limestone:

Limestone: white, dense (much calcitized), fossiliferous (For-

aminifera) -----------------------------

_____________________________ _

265

775

Gypsina globula at 510-520. Asterocyclina nassauensis, Operculinoides sp. at 550-560. Amphistegina pinarensis var. at 680-690.

Summary:

Pliocene to Recent (undifferentiated) __

65

65

Miocene (undifferentiated) ______

425

490

Oligocene (undifferentiated) _______

----------------

20

510

Upper Eocene (Ocala limestone) _ __________________________

265

775

Potential Water-Bearing Zones:
Sand: fine to coarse-grained ________ Limestone

50

250

285

775

'Reworked(?) fossil of middle Eocene age.

422

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 1 block northeast of Post Office at Coca Cola Plant in Waycr:oss
Owner: No. 1 Coca Cola Company Driller: M. M. Gray Drilling Company Drilled: January 1957

WARE COUNTY
Well No.: GGS 527 Elev.: 1401

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, argillaceous, finely dissemi-

nated phosphatic grains and kaolin inclusions __________________ 15

15

Miocene (Undifferentiated):

Clay: mottled, sandy, some sand as above __

25

40

Sand: fine to coarse-grained, angular, arkosic __

60

100

Sand: coarse-grained, arkosic; clay, dark-green, sandy__

260

360

Black phosphatic pebbles abundant at 310-320.

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic; interbedded limestone, white, dense (much calci-

tized), sandy, phosphatic_

_____________ _

120

480

Oligocene (Undifferentiated):

Limestone: cream, very dense (highly calcitized), fossilifer-

ous (Ostracods and Foraminifera)__ __________________ _

20

500

Dictyoconus 2 sp., Quinqueloculina sp. at 480-490.

No samples ____________________________________________

20

520

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, very dense (highly calcitized), fossil-

iferous (abundant Foraminifera)_

____________ _ 170

690

Gypsina globula, Pseudophragmina flintensis, Asterocyclina nassauensis at 520-530.

Limestone: cream, much calcitized, massive

18

708

Summary:
Pliocene to Recent (undifferentiated) _____ _ Miocene (undifferentiated) ______________________ Oligocene (undifferentiated) No samples_ In upper Eocene (Ocala limestone) _______________________
1Average elevation based on Georgia State Highway Maps. 'Reworked ( ?) fossil of middle Eocene age.

15

15

465

480

20

500

20

520

188

708

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

423

Potential Water-Bearing Zones: Limestone ____________ ------------------------------ ---------------------------------------

Thickness Depth

(feet)

(feet)

228

708

Samples of poor quality.

Remarks:

Location: In Waresboro, northwestern part of Waycross Owner: No. 1 Waresboro Elementary School Driller: Turner Well Drilling Company Drilled: April 1957

WARE COUNTY Well No.: GGS 538

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated): Sand: medium to coarse-grained, subangular____ Clay: pale-greenish-gray, sandy, micaceous _

25

25

60

85

Miocene (Undifferentiated):

Clay: dark-olive-green to brownish-gray, sandy_ No samples ________________

62

147

10

157

Sand: fine to medium-grained, subangular__

10

167

Sand: coarse-grained, subrounded, phosphatic, arkosic______

10

177

Limestone: light-gray to light-brown, much calcitized, saccha-

roidal, sandy, phosphatic, cherty___________

__________________ 31

208

Brownish-gray chert (or siltstone~) prominent at 198-208.

Clay: greenish-gray, blocky, sandy, phosphatic; interbedded

sand, fine to medium-grained, subangular________

62

270

Limestone: cream to light-brown, saccharoidal, sandy, phos-

phatic______________________________ __ -------------------------------

30

300

Sand: medium to coarse-grained, subangular, phosphatic

11

311

Limestone: cream to light-gray, saccharoidal, sandy, phos-

phatic, fossiliferous (megafossils, echinoid and bryozoan

remains, and some Foraminifera at depth)_____

_______ _________ 92

403

First observed megafossils at 311-321.

Elphidium sagrum, Elphidium poeyanum, Valvulineria sp., Cibicides concentricus at 403-413.

Limestone: light-brown, saccharoidal, sandy, phosphatic_

10

413

424

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: light-gray to cream at depth, rather massive, somewhat nodular, fossiliferous (bryozoan remains and some Foraminifera) ------------------------------------------------------------------------ 62

Quinqueloculina sp., Rotalia mexicana var. at 413-423. Dictyoconus1 sp., Quinqueloculina sp. at 423-434. Gypsina globula1 at 465-475.

No samples------------------------------------

9

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, relatively soft and porous, calcitized,

granular, fossiliferous (bryozoan remains and some Fora-

minifera) _______ --------------------------

114

Operculinoides sp. at 484-495. Asterocyclina sp., Operculinoides sp. at 505-516.

Depth (feet)
475
484 598

Summary:
Pliocene to Recent (undifferentiated) ________ Miocene (undifferentiated) ________________________ Oligocene (undifferentiated) _______ No samples -------------------------------------------------In upper Eocene (Ocala limestone) ______

85

85

328

413

62

475

9

484

114

598

Limestone ..

Potential Water-Bearing Zones:

114

598

Location: 1.4 mi. southwest of junction of Highways 15 and 24 in Sandersville, near east side of Highway 15 near concrete reservoir
Owner: City of Sandersville well no. 5 Driller: Layne-Atlantic Company Drilled: June 1944

WASHINGTON COUNTY
Well No.: GGS 94 Elev.: 465

Thicknes" Depth

(feet)

(feet)

Miocene: Hawthorn Formation:

Clay: bluish-green to red (mottled), light-gray at depth,

blocky, sandy, limonitic... ____________________________

50

50

Upper Eocene: Jackson Group: Barnwell Formation:

Sand: fine to medium-grained, angular, somewhat indurated.

5

55

'Reworked fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

425

Thickness (feet)

Limestone1 : white, dense, somewhat saccharoidal (calcitized),

sandy, much sandier at depth, cherty, coarsely but sparsely

glauconitic, fossiliferous (echinoid and bryozoan remains

and Ostracods) ---------------------------------

------------------------------

62

Sand: fine to coarse-grained, subangular_

13

Marl: light-gray, silty, blocky, fossiliferous (echinoid and bryozoan remains, macroshells, Ostracods, and Foraminifera) 23

Elphidium sp., Nonion advena, Nonion inexcavatus, Valvulineria jacksonensis at 132-134.

Limestone (or coquina) : gray, dense, somewhat saccharoidal,

very sandy, fossiliferous (fragments and casts and molds

of megafossils) ----------------------------------------------------- __________________ _

13

Marl: light-gray, somewhat indurated, fissile, silty, progres-

sively sandier at depth, carbonaceous, fossiliferous (echinoid

and bryozoan remains, Ostracods, and Foraminifera) ___

16

Limestone (or coquina) : gray to cream, crystalline to saccha-

roidal, very sandy, fossiliferous (fragments and molds of

megafossils) -------------------------------------------------------------------------------------

5

Marl: light-brown, somewhat indurated, fissile, carbonaceous, sandy -------------------------------------------------------------------------------------------------- 10

Sand: fine to coarse-grained, angular________________________________ _

5

Marl: gray, somewhat indurated, fissile, carbonaceous, sandy____ 5

Limestone (or coquina): greenish-gray, dense, very sandy,
phosphatic (finely disseminated), fossiliferous (casts and molds of megafossils and bryozoan remains)_____ ________________ 53

Depth (feet)
117 130 153
166
182
187 197 202 207
260

Upper Cretaceous: Tuscaloosa Formation:

Sand: fine to coarse-grained, angular, limonitic; some clay

(or kaolin), gray to red (mottled), micaceous; limestone,

''cave'' from above______________________________________________________________________________ 6

266

Kaolin: gray, blocky, micaceous, somewhat sandy__________________________ 5

271

Kaolin: white, micaceous, somewhat sandy__________________________________ 71

342

Clay: gray to dark-brown, lignitic______ ------------------------------ ______________ 20

362

Sand: fine to coarse-grained; interbedded thin stringers of

clay, as above___ ---------------------------------------------------------------------------------- 81

443

'Probable SandersviJJe limestone.

426

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
Clay: brick-red, micaceous, sandy________________________________________________________ 21
Sand: fine to coarse-grained; interbedded clay, gray to darkbrown to black to mottled, micaceous, somewhat sandy, lignitic ------------------------------------------------------------------------------------------------------ 163
Sand: fine to coarse-grained, very coarse-grained and gravelly at depth; interbedded clay, gray to green to red, somewhat fissile, micaceous, sandy___________________________________________________________________ 244

Depth (feet)
464
627
871

Basement Complex (Undifferentiated): Crystalline rock

1.5 872.5

Summary:
Miocene (Hawthorn formation) _ Oligocene ( ?) (undifferentiated) _______________ Upper Eocene (Barnwell formation) Upper Cretaceous (Tuscaloosa formation) Basement complex (undifferentiated) _______

50 80 130 611
1.5

50 130 260 871 872.5

Potential Water-Bearing Zones:

Sand: fine to coarse-grained_________________________________________

13

130

Sand: fine to coarse-grained______ ---------------------------------- _____________

5

202

Sand: fine to coarse-grained________ ----------------------------------

6

403

Sand: fine to coarse-grained________________________________________________

10

443

Sand: fine to coarse-grained_____________________________________________________________

76

500

Sand: fine to coarse-grained ------------------------------------

39

571

Sand: fine to coarse-grained

------------------------------------ ________________ 12

593

Sand: fine to coarse-grained_____________________________________________________

29

669

Sand: fine to coarse-grained __ ______________

__________________________ _

17

714

Sand: fine to coarse-grained_______ _____________

44

786

Sand: fine to coarse-grained __

14

869

Location: 2.8 mi. north of Highway 24 at Davisboro and 0.7 mi. west of north-south dirt road, near storage shed
Owner: Georgia Forest Service Driller: Layne-Atlantic Company Drilled: May 1948

WASHINGTON COUNTY
Well No.: GGS 152 Elev.: 392

Thickness Depth

(feet)

(feet)

Upper Eocene: Jackson Group: Barnwell Formation:

Clay: brick-red, very sandy, limonitic; fragments of residual

limestone _____________

--------------------------------------- ------------------------------- 33

33

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

427

Thickness (feet)

No samples -------------------------------------------------------------------------------------------- 17

Sand: fine to medium-grained, much coarser-grained at depth,

angular; some clay, gray to cream to pink, and scattered

fragments of residual limestone_____

________________ 47

Sand: fine to coarse-grained; marl, yellowish-green, somewhat

fissile, sandy, fossiliferous (macroshells, echinoid and bryo-

zoan remains, Ostracods, and Foraminifera)

_______________ _

6

N onion advena, N onion inexcavatus, Valvulineria jacksonensis, Cibicides lobatulus at 97-103.

Limestone: gray to yellow, dense, somewhat saccharoidal and

crystalline (in texture), very sandy, fossiliferous (macro-

shells, echinoid and bryozoan remains) _______

2

Sand: fine to coarse-grained, angular; some marl, cream to

yellowish-green to red (mottled), fossiliferous (macroshells

and some microfossils)_________

_____________________________________ _

48

Clay: yellowish-green, noncalcareous, fissile, somewhat ben-

tonitic _

________ _________

__ _________

------- -------- 28

Sand: fine to coarse-grained; some clay, yellowish-green to red (mottled), sandy _---------------------------------- --------------------------------- 24

Limestone: gray, dense, saccharoidal, very sandy, sparsely

phosphatic, fossiliferous (fragments, casts and molds of

megafossils)

-

___________________ _

14

Depth (feet)
50 97 103
105 153 181 205 219

Upper Cretaceous: Tuscaloosa Formation: Kaolin: white to gray to pink (mottled), micaceous ____ Sand: coarse-grained, angular, limonitic

47

266

260

526

Summary:
Upper Eocene (Barnwell formation) __ Upper Cretaceous (Tuscaloosa formation)

219

219

307

526

Potential Water-Bearing Zones:
Limestone _______ Sand: coarse-grained ____

14

219

260

526

Remarks:
Overall quality of samples for this well is poor. Delineation of water-bearing sands below depth of 266 feet is not feasible.

428

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 12 mi. northwest of Sandersville Owner: No. 1 Lillian-B Driller: Middle Georgia Oil and Gas Company Drilled: January 1921

WASHINGTON COUNTY Well No.: GGS 223

Thickness Depth

(feet)

(feet)

No samples __________________ ----------------------------------------

300

300

In Upper Cretaceous: Tuscaloosa Formation:

Kaolin: white to cream, sandy, micaceous.______

18

318

Sand: somewhat indurated, fine to coarse-grained, angular,

arkosic -------------------------------------------------------------------------------------------------- 5

323

Clay: yellow to light-tan, micaceous, very sandy__

5

328

Kaolin: light-gray, micaceous, very sandy_________________

12

340

Clay: tan to olive-green, very sandy, micaceous__________

5

345

Kaolin: light-gray to pink (mottled), very sandy, micaceous

5

350

No samples ------------------------------------------------------------------ ___________________________ 10

360

Clay: reddish-brown, highly micaceous, sandy

5

365

Kaolin: cream, very sandy, highly micaceous _

13

378

No samples ------------------------------------------------------------------------

3

381

Kaolin: cream, very sandy, highly micaceous _____

11

392

Basement Complex (Undifferentiated):

Clay: light-gray to yellowish-green, sandy, highly micaceous,

flakes of biotite______________________________________ ------------------------------------------- 3

395

Crystalline rock1

?

?

Summary:

No samples ----------------------------- ________________________________________________________

300

300

In upper Cretaceous (Tuscaloosa formation) ____________________________ _

92

392

Basement complex (undifferentiated) _______________________

3

395

Potential Water-Bearing Zones: None observed in interval covered by available samples.

'Unweathered biotite gneiss (?) in sample which apparently was derived below the depth of 392-
395, the last sample carrying depth identification. Sample 392-395 appears to be weathered biotite gneiss ( 1).

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

429

Location: 12.7 mi. west of Sandersville via Highway 24 and 0.9 mi. north of Highway 24 at quarry
Owner: Chemical and Minerals Corporation Driller: Bostick Drilling Company Drilled: May 1955

WASHINGTON COUNTY
Well No.: GGS 433 Elev.: 318

Thickness Depth1

(feet)

(feet)

No samples_

30

30

In Upper Cretaceous: Tuscaloosa Formation:

Clay (or kaolin): white to pink (mottled), micaceous, sandy______ 20

50

Sand: fine- to coarse-grained, angular; some clay, as above__________ 60

110

Sand: fine to coarse-grained, angular________________________________________________ 30

140

Sand: as above; some clay, brick-red, micaceous, sandy________________ 100

240

Sand: coarse-grained, angular_______________________ ----------------------------------- 80

320

Summary:

No samples ------------------------------------------------------------------------- ________________________ 30

30

In upper Cretaceous (Tuscaloosa formation)---------------------------------------- 290

320

Potential Water-Bearing Zones:

Sand: fine to coarse-grained____________________________________________________________________ 24

128

Sand: fine to coarse-grained___________________________________________________________________ 20

176

Sand : fine to coarse-grained____________________________________________________________________ 16

208

Sand: coarse-grained -------------------------------------------------------------------------------- 20

290

Sand: coarse-grained ___ ---------------------------------------------------------------------------- 15

311

Remarks: Overall quality of samples somewhat poor.

Location: In Tennille Owner: City of Tennile

WASHINGTON COUNTY

Well No.: GGS 521 Elev.: 460 1

Thickness Depth'

(feet)

(feet)

No samples __

55

55

In Upper Eocene: Jackson Group: Barnwell Formation:

Clay: olive-green to tan, very sandy, limonitic, with inclusions

of residual limestone________________________________________________________________________ ?

55

1Average elevation based on Georgia State Highway Maps. 2Spot samples at depths listed in log.

430

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Limestone: white, sandy; sand, coarse-grained, subrounded

grains ____ _

?

Sand: fine to medium-grained, angular, fossiliferous (some

macroshells) ; some clay, yellowish-green__

_______________________ ?

Clay: yellowish-green, sandy, finely disseminated phosphatic

grains, fossiliferous (echinoid and bryozoan remains, Ostra-

cods, and Foraminifera)_______

__________________________ ?

Siphonina jacksonensis, Valvulineria jacksonensis, Nonion advena, Cibicides cf. C. refulgens, Cibicides lobatulus at 245.

Depth (feet)
90 150
245

Summary:
No samples _________________________ -------------------------------In upper Eocene (Barnwell formation)_

55

55

190

245

Potential Water-Bearing Zones: None observed in samples available for this well.

Location: 8.5 mi. southeast of Jesup, Land Lot 7, 333rd Land District
Owner: Brunswick Peninsular Corporation Driller: The California Co. Drilled: December 1944

WAYNE COUNTY
Well No.: GGS 52 Elev.: 73
(derrick floor)

Thickness Depth

(feet)

(feet)

No samples _______

74

74

In Miocene (Undifferentiated):

Sand: fine to coarse-grained, angular, phosphatic; limestone,

gray to cream, dense (calcitized), sandy, phosphatic, fossil-

iferous (molds and impressions of macroshells) ____________ _

389

463

Sand: as above; clay, dark-green, sandy, fossiliferous (macro-

shells and fish teeth)------------------------------------------------------------------------- 31

494

Sand: fine to coarse-grained, phosphatic; limestone, white,

sandy

29

523

Sand: fine to coarse-grained, phosphatic; dolomitic limestone,

light-brown, saccharoidal, phosphatic_________ ------------------------------- 157

680

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

431

Oligocene (Undifferentiated):

Thickn<>ss (feet)

Sand and limestone: as above; limestone, light-gray, nodular,

dense (calcitized), fossiliferous (some Foraminifera)

45

Quinqueloculina sp., Pyrgo sp. at 680-710. Dictyoconus1 sp. at 710-725.

Limestone: cream, fossiliferous; some dolomitic limestone, as

above ____ .____ ---------------------------------------------------------------------------

14

Depth (feet)
725
739

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream to light-gray, massive, dense (much calci-

tized), fossiliferous (macroshells, bryozoan remains, and

some Foraminifera) _____________ _____ ____________ _______ _______________ ________________ 94

833

Asterocyclina nassauensis, Gypsina globula at 756-771. Pseudophragmina flintensis, Operculinoides floridensis at 771-787.

Limestone: as above; some dolomitic limestone_______

62

895

Middle Eocene: Claiborne Group (Undifferentiated):

Sand: fine to coarse-grained, and some dolomitic limestone, as above _---------------------------------- ------------------------------------------------------------ 88

No samples --------------------------------------------------------------------------- ----------------- 99

Dolomitic limestone: brown, saccharoidaL___ -------------- ______________

54

Dolomitic limestone: as above; some limestone, light-gray, sac-

charoidal, granular (in texture)__

------------------

16

No samples_

31

Limestone: light-gray, somewhat granular (in texture), finely disseminated glauconite, fossiliferous__________________________________________ 167

Asterocyclina monticellensis at 1183-1214. Lepidocyclina (Polylepidina) antillea at 1245-1255.

Sand: fine to coarse-grained, phosphatic; interbedded lime-

stone, cream, somewhat massive

280

Sand: as above; dolomitic limestone, light-brown, saccharoidal,

cherty __

--------------------- ------------------------------- -------------------- 77

Limestone: cream, granular (in texture), dense (much calci-

tized), cherty _______________ ____ -------------------------- ________________

243

Asterocyclina monticellensis common at 1857-1873.

'Reworked (?) fossil of middle Eocene age.

983 1,082 1,136 1,152 1,183 1,350
1,630 1,707 1,950

432

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Dolomitic limestone: light-brown, saccharoidal; some lime-

stone, as above_________________________________________________________

40

Dolomitic limestone: as above, but coarsely glauconitic

5

Dolomitic limestone: as above; some indurated sand, fine-

grained, abundantly glauconitic; interbedded clay, pale-

green, fissile, silty, gypsiferous, finely glauconitic, abun-

dantly and coarsely glauconitic and fossiliferous at depth

125

Sand: fine to coarse-grained, phosphatic_____

85

Depth (feet)
1,990 1,995
2,120 2,205

Lower Eocene: Wilcox Group (Undifferentiated):

Sand: fine to coarse-grained, glauconitic; interbedded limestone, white, dense (much calcitized), sandy, coarsely glauconitic, fossiliferous (molds and fragments of macroshells) 165

Eponides dorji, Valvulineria wilcoxensis at 2205-2212.

Marl: dark-gray, silty, micaceous, carbonaceous, fossiliferous

(some Foraminifera) ____________________________________

175

Eponides dorji, Valvulineria scrobiculata, Cibicides howelli at 2473-2545.

Paleocene: Midway Group: Clayton Formation:

Sand: somewhat indurated at certain horizons, fine-grained, glauconitic; interbedded marl, dark-gray to black, fissile, carbonaceous, finely micaceous, fossiliferous (some Foraminifera) _____________ ----------------------------------------- ---------------------------------- 90

Eponides lotus, Polymorphina cushmani, Siphonina prima, Cibicides pmecursorius, Cibicides howelli at 2545-2550.

Limestone: cream, dense (much calcitized), nodular (in tex-

ture), somewhat saccharoidal, fossiliferous (molds of mac-

roshells, bryozoan remains, and occasional Ostracods and

Foraminifera) _____________________ ------------------------------------------------

24

Sand: somewhat indurated at certain horizons, fine-grained,

micaceous, glauconitic ___________________________________

121

Sand: fine-grained, glauconitic; interbedded marl, black, fis-

sile, carbonaceous, finely micaceous, somewhat fossiliferous

(Foraminifera) -----------------------------------------------------------------

120

2,370 2,545
2,635
2,659 2,780 2,900

Upper Cretaceous: Post-Tuscaloosa (Undifferentiated):
Marl: bluish-gray to brown, sandy, micaceous, glauconitic, fossiliferous (macroshells, Ostracods, and Foraminifera) ___ 625 Globotruncana sp., Guembelina sp. at 2900-2903.

3,525

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

433

Marl: as above, but much sandier__

Thickness (feet)
540

Anomalina sp., Globorotalia micheliniana at 3525-3540. Planulina cf. P. taylorensis at 3540-3555. Kyphopyxa christneri at 3612-3626. Vaginulina texana at 3693-3708.

Sand: fine to medium-grained, somewhat indurated at certain

horizons, glauconitic, phosphatic, abundantly micaceous.

65

Depth (feet)
4,065
4,130

Tuscaloosa Formation:

Sand: fine to medium-grained, indurated, finely glauconitic,

very micaceous, fossiliferous (macroshells) ; interbedded

shale, greenish to dark-gray, fissile, finely micaceous

445

4,575

Basement Complex (Undifferentiated): Quartzite? _______ ----------------------------------------------------------------------------

50 4,625

Summary:

No samples ------------------------------------------------------------------------------------

74

In Miocene (undifferentiated) --------------------------------------------------------------- 606

0 ligocene (undifferentiated) ________________ ------------------------------------------------- 59

Upper Eocene (Ocala limestone)----------------------------------

156

Middle Eocene (Claiborne group, undifferentiated) __

---- 1,310

Lower Eocene (Wilcox group, undifferentiated) ____

340

Paleocene (Clayton formation) _____ -------------------------------

355

Upper Cretaceous (post-Tuscaloosa, undifferentiated) __________________ 1,230

Upper Cretaceous (Tuscaloosa formation)

445

Basement complex (undifferentiated)_______

50

74 680 739 895 2,205 2,545 2,900 4,130 4,575 4,625

Potential Water-Bearing Zones:

Limestone ___

------------------------------------------------------------------------------- 180

Sand: fine to coarse-grained

-------------------------------------------------------- 61

Sand: fine to coarse-grained

----------------------------------------------------- 280

Sand: fine to coarse-grained

---------------------------------------------------------- 70

Sand: fine-grained 1 ___

____________________________ -----------------------------

65

860 956 1,630 2,370 2,635

1Probably contains salt water.

434

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 0.5 mi. southwest of Mt. Pleasant Owner: No.1 Southern Pines Products Company Driller: Hughes Specialty Well Drilling Company Drilled: September 1906

WAYNE COUNTY
Well No.: GGS 96 Elev.: 59

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, subangular, finely dissemi-

nated phosphatic grains; interbedded clay, dark-gray, silty,

lignitic, micaceous, fossiliferous at certain levels (macro-

shells and echinoid remains)--------------------------------------------- ______________ 40

40

Sand: coarse-grained, subangular, sparsely phosphatic_

4

44

In Miocene: Duplin Marl:

Marl: gray to pale-green, somewhat indurated and sandy,

fossiliferous (megafossils, echinoid remains, and Ostracods)____ 27

71

Shell bed prominent at 69-71.

Hawthorn Formation:

Clay: dark-green, rather tough, somewhat indurated, sandy__

55

126

No samples ___

21

147

Sand: fine-grained __

13

160

Sand: fine to coarse-grained, phosphatic__

60

220

Clay: dark-green, sandy, phosphatic_

65

285

Sand: fine to coarse-grained, phosphatic; interbedded clay,

dark-green, sandy, phosphatic___________________ ________________ ______________ 115

400

Sand: fine to coarse-grained, phosphatic; interbedded lime-

stone, white, dense, sandy__________________________________________________________________ 80

480

Dolomitic limestone: light-brown, saccharoidal, sandy, phos-

phatic -------------------------------------------------------------------------------------------------- 30

510

Oligocene (Undifferentiated):

Limestone: light-gray, dense (much calcitized), crystalline,

nodular, fossiliferous (Foraminifera)------------------------------------------ 50

560

Rotalia byramensis var. at 510-523.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

435

Summary:

Thickness (feet)

Pliocene to Recent (undifferentiated) ____________________________________________

44

In Miocene (Duplin marl) ________________________________ --------------------------

27

Miocene (Hawthorn formation)_____

____________________________ 439

Oligocene (undifferentiated) __

_____________________ _

50

Depth (feet)
44 71 510 560

Potential Water-Bearing Zones: Sand: fine to coarse-grained_____________________________________________________ Limestone _________ ---------------------------------------------------------------------------------

60

220

50

560

Location: 1500 ft. south of Altamaha River at Doctortown Owner: No. 1 Rayonier Corporation Driller: Layne-Atlantic Company Drilled: January 1952

WAYNE COUNTY
Well No.: GGS 262 Elev.: 100

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: medium-grained to coarse-grained at depth, subangu-

lar to subrounded, arkosic; interbedded clay (or kaolin?),

white, sandy, micaceous __ _

40

40

Miocene (Undifferentiated):

Clay: pale-brownish-gray to dark-brown at depth, somewhat

mottled (with red streaks), sandy, micaceous____

15

55

Clay: dark to pale green, sandy, phosphatic; beds of sand __

305

360

Sand: fine to coarse-grained, phosphatic; interbedded lime-

stone, white, dense (much calcitized), sandy, phosphatic_

140

500

Dolomitic limestone: brown, saccharoidal, sandy, phosphatic _

25

525

No samples _______

5

530

In Oligocene (Undifferentiated):

Limestone: gray, dense (much calcitized), nodular, fossilifer-

ous (some Foraminifera)------------------------------------------------------------------ 15

545

Operculinoides sp. at 530-545.

436

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Upper Eocene: Jackson Group: Ocala Limestone:

Thickness (feet)

Limestone: white, dense (much calcitized), fossiliferous (bryozoan remains, macroshells, and Foraminifera)-------------------------- 305

Gypsina globula, Asterocyclina nassauensis at 545-555. Camerina striatoreticulata at 710-715. Amphistegina pinarensis var. at 720-725.

Depth (feet)
850

Middle Eocene: Claiborne Group (Undifferentiated):

Dolomitic limestone: brown, saccharoidal ----------------------- _______________ 50

900

Summary:

Pliocene to Recent (undifferentiated) ________________ --------------------------------- 40

40

Miocene (undifferentiated) -------------------------------------------------------------------- 485

525

No samples ------------------------------------------------ ------------------------------------------------- 5

530

In Oligocene (undifferentiated) ______________ ----------------------------------------------- 15

545

Upper Eocene (Ocala limestone)------------------------------------------------------------ 305

850

Middle Eocene (Claiborne group, undifferentiated)_________________________ 50

900

Potential Water-Bearing Zones:

Sand: fine to coarse-grained__________________________ -----------------------------

52

187

Sand: fine to coarse-grained _________

-------------------------------------- 41

310

Sand: fine to coarse-grained____________________________________________________________________ 140

500

Limestone ---------------------------------------------------------------------------------------------------- 270

815

Location: East side of U.S. Highway 25, south side of Altamaha River, at Rayonier Plant
Owner: No.1 Rayonier Inc. Driller: Layne-Atlantic Company Drilled: April 1952

WAYNE COUNTY
Well No.: GGS 297 Elev.: 100

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, finely disseminated phosphatic grains;

interbedded kaolin, white, somewhat sandy__________________________________ 38

38

No samples _________________________

120

158

In Miocene (Undifferentiated) :

Sand: fine to coarse-grained, rounded, phosphatic___________________ 60

218

Clay: dark-green, sandy_______________________________ 42

260

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

437

Thickness (feet)
No samples __________________ --------------------------------------------------------------------------- 50
Sand: fine to coarse-grained, phosphatic__________________________________________ 60

Depth (feet)
310
370

Sand: as above; interbedded dolomitic limestone, light-brown,

saccharoidal, sandy, phosphatic------------------------------------------------------- 80

450

No samples ---------------------------------------------------------------------------------------------- 25

475

Limestone: white, dense (much calcitized), sandy, phosphatic,

fossiliferous (fragments and molds of megafossils)__________________ 16

491

No samples ---------------------------------------------------------------------------------------------- 104

595

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream to white, somewhat saccharoidal (much cal-

citized), fossiliferous (bryozoan remains and Foraminifera)____ 230

825

Pseudophragmina flintensis, Gypsina globula at 595-605. Asterocyclina nassauensis at 605-615. Amphistegina pinarensis var. at 765-775.

Middle Eocene: Claiborne Group (Undifferentiated):

Dolomitic limestone: light-brown, saccharoidaL __________________

80

905

Limestone: light-gray, rather dense (calcitized), fossiliferous

(Foraminifera) ----------------------------------- _-------------------------------------------- 40

945

Miliolidae abundant at 905-945.

No samples ___________ -------------------------------------

40

985

Dolomitic limestone: light-brown to black, saccharoidaL

7

992

Summary:

Pliocene to Recent (undifferentiated)_____________

38

38

No samples --------------------------------------------------------------------

120

158

In Miocene (undifferentiated)_ ____ ___________ ---------------------------- 333

491

No samples ----------------------------------------

______________ -------------------------------- 104

595

In upper Eocene (Ocala limestone)_______ ____________________________

230

825

Middle Eocene (Claiborne group, undifferentiated) _________________________ 167

992

Potential Water-Bearing Zones:
Sand: fine to coarse-grained Sand: fine to coarse-grained ______ Limestone ---------------------------------------------------------------

60

218

60

370

230

825

438

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Odum Owner: City of Odum Driller: M. M. Gray Drilled: 1955

WAYNE COUNTY
Well No.: GGS 454 Elev.: 1551

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to coarse-grained, angular, arkosic; interbedded

clay, light-gray to pale-green, sandy _________

120

120

Mottled sandy clay at 0-10.

Coarse-grained arkosic sand at 60-70.

Tubular worm borings ( ?) prominent at 80-100.

Fine to coarse-grained, angular, arkosic sand at 100-120.

Miocene (Undifferentiated):

Clay: pale-green, sandy, phosphatic; interbedded sand, fine to

coarse-grained, phosphatic; clay, pale-green, sandy, phos-

phatic; dolomitic limestone, light-brown, saccharoidal,

sandy, phosphatic; and limestone, white, sandy, coarsely

phosphatic, fossiliferous (macroshells)

________________ _

470

590

Dolomitic limestone, light-brown, sandy, phosphatic at 300350, 400-430, 490-510, and 580-590.

Oligocene (Undifferentiated):

Limestone: gray, extremely dense (highly calcitized), nodu-

lar, fossiliferous (some Foraminifera) __ _

50

640

Rotalia byramensis var., Lepidocyclina sp. at 610-620. Miliolidae common, Dictyoconus 2 sp. at 620-630.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: as above, very fossiliferous (macroshells, bryo-

zoan remains, and Foraminifera) __ _

70

710

Operculinoides sp. at 640-650. Operculinoides cf. 0. floridensis at 660-670. Operculinoides sp. abundant, Asterocyclina nassauensis, Pseudophragmina flintensis, Gypsina globula at 670-680.

1Average elevation based on Georgia State Highway Maps. 2Reworked( ?) fossil of middle Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

439

Summary:

Thickness (feet)

Pliocene to Recent (undifferentiated)_______________

120

Miocene (undifferentiated) ______________________________ --------------

470

Oligocene (undifferentiated) ------------------------------------------------- ________________ 50

Upper Eocene (Ocala limestone)------------------------------------------------

70

Depth (feet)
120 590 640 710

Potential Water-Bearing Zones:

Sand: fine to coarse-grained___

10

70

Sand: fine to coarse-grained __

20

120

Sand: fine to coarse-grained ___ -------------------------------------------------

50

490

Limestone ________ ------------------------- -------------------------------------------------- -------------- 110

710

Location: 0.75 mi. south of Screven city limits, west side of Highway 38
Owner: No. 1 Lindsey Grace Driller: Layne-Atlantic Company Drilled: 1955

WAYNE COUNTY
Well No.: GGS 466 Elev.: 118

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, angular, arkosic_

5

5

Clay: yellowish-green, sandy_____________________________________________________________ 10

15

Sand: fine to coarse-grained, angular, arkosic; some clay, pale

green to purple (mottled), sandy_

_________________

30

45

Sand: very coarse-grained, arkosic _______

30

75

Miocene (Undifferentiated):

Clay: yellowish-green to dark-green, phosphatic at depth

175

250

Black phosphatic pebbles common at 145-155.

Sand: coarse-grained, phosphatic_____

40

290

Sand: as above; interbedded clay, dark-green, sandy, phos-

phatic; and dolomitic limestone, light-brown, sandy, phos-

phatic __ -----------------------------------------------

----------------------------------- 103

393

Clay: dark-green, sandy, phosphatic ______

123

516

Dolomitic limestone: dark-brown, saccharoidal, sandy, phos-

phatic___________________________

__ ______ _______________ _ 84

600

No samples _________ _

20

620

440

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

In Oligocene (Undifferentiated):

Thickness (feet)

Limestone: cream, rather massive (calcitized), fossiliferous (Foraminifera) --------------------------------------------------------------------------------- 80

Dictyoconus 1 sp., Quinqueloculina sp. at 620-640.

Depth (feet)
700

Summary:

Pliocene to Recent (undifferentiated)-------------------------------------------------- 75

75

Miocene (undifferentiated) ------------------------------------------------------------------- 525

600

No samples ------------------------------------------------------------------------------------------------ 20

620

In Oligocene (undifferentiated) ___________ -----------------------------------------

80

700

Potential Water-Bearing Zones:
Sand: coarse-grained ---------------------------------- ---------------------------------Limestone --------------------------------------------------------------------------------------------

40

290

80

700

Location: In Jesup Owner: City of Jesup Driller: Bailey Drilling Company Drilled: May 1958

WAYNE COUNTY
Well No.: GGS 555 Elev.: 100

Thickness Depth

(feet)

(feet)

Pliocene to Recent (Undifferentiated):

Sand: fine to medium-grained, angular, arkosic, phosphatic

(finely disseminated) ; interbedded clay, dark-gray, silty,

lignitic, micaceous ---------- -------------------- _______________________ 74

74

Miocene (Undifferentiated):

Sand: coarse-grained, subangular; some clay, yellowish to

dark-green, blocky, sandy, phosphatic at depth_______________

21

95

Clay: yellowish to dark-green, blocky, sandy, phosphatic_

190

285

Light-brown phosphatic pebbles at 95-105.

Jet-black phosphatic pebbles at 141-152.

Sand: coarse-grained, subangular, phosphatic; some clay, as

above --------------------------------------------------------------------------------------------------- 68

353

Dolomitic limestone at 305-323.

Clay: as above.------------------------------------------------------------------------- 61

414

'Reworked( 1) fossil of middle Eocene age,

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

441

Thickness (feet)
Sand: coarse-grained, subangular, phosphatic; interbedded dolomitic limestone, light-brown, saccharoidal, sandy, phosphatic ------------------------------------------------------------------------------------------------- 61

Dolomitic limestone: as above; interbedded thin tongues of sand and clay, as above__________ ----------------------------- ----------------------------- 61

Limestone: light-gray, dense, sandy, phosphatic, fossiliferous

(echinoid remains and macroshells) ______

_____________ ___

40

Depth (feet)
475 536 576

Oligocene (Undifferentiated):

Limestone: cream, rather massive, nodular, much calcitized

and recrystallized, porous, fossiliferous (casts and molds

chiefly of Gastropods, some echinoid and bryozoan remains,

and Foraminifera)

_____ ________________

_____________ _ 50

626

Quinqueloculina sp. at 576-586. Quinqueloculina sp., Rotalia sp., Gypsina globula\ Dictyoconus1 sp. at 586-596.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: as above, but lighter-colored at depth, fossilifer-

ous (bryozoan remains and Foraminifera) ____________

69

695

Operculinoides sp., Operculinoides floridensis, Asterocyclina nassauensis, Pseudophragmina flintensis, Gypsina globula at 626-636.

Summary:
Pliocene to Recent (undifferentiated) Miocene (undifferentiated) ________________________ Oligocene (undifferentiated) _______________________ Upper Eocene (Ocala limestone) ___________ _

74

74

502

576

50

626

69

695

Potential Water-Bearing Zones:

Sand: fine to coarse-grained________________ _

Sand: fine to coarse-grained___________________

Limestone

------------------------------------ _______________

68

353

61

414

159

695

'Reworked(?) fossil of middle Eocene age.

442

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

WEBSTER COUNTY

Location: Approximately 6.2 mi. northwest of road june- Well No.: GGS 323

tion in Preston via Highway 280 to fork in road, 0.8 mi. Elev.: 586

due north of Highway 280 via county road, east side of county road in road fork

Owner: No.1 E. C. Downer

Driller: Southeastern Drilling Company

Drilled: October 1952

Thickness Depth

(feet)

(feet)

Upper Cretaceous: Providence Sand:

Clay: bluish-gray to brick-red (somewhat mottled), very

sandy, limonitic _______________________ --------------------------------------------------------- 30

30

Sand: fine to coarse-grained, very angular, arkosic; inter-

bedded clay, gray to red (mottled), micaceous, sandy_______________ 145

175

Ripley Formation:

Clay: dark bluish-gray to black, somewhat fissile, lignitic,

micaceous, sandy ___

_____ --------------------------------- 15

190

Summary:
Upper Cretaceous (Providence sand) ____ Upper Cretaceous (Ripley formation) __

175

175

15

180

Potential Water-Bearing Zones:

Sand: fine to coarse-grained_______ -------------------------------------

4

114

Sand: fine to coarse-grained_________________ -----------------------------

6

138

Sand: fine to coarse-grained__ Sand: fine to coarse-grained__

---------------------------------------------

6

152

__ _________

_________________ 10

166

Remarks:
Owing to ground-water leakage (springs) all sands listed above as potential sources of ground water may be dry.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

443

WEBSTER COUNTY

Location: Northeastern part of county, 7.5 mi. northeast Well No.: GGS 488

of road junction in center of Preston via Highway 153, south side of Highway

Owner: No.1 Winkler Farm

Driller: Southeastern Drilling Company

Drilled: March 1956

Thlckness (feet)

Depth (feet)

Middle Eocene: Claiborne Group: Lisbon Formation:

Sand: argillaceous, brick-red, fine to coarse-grained, angular,

limonitic --------------------------------------------------------------------------------------

40

40

Clay: olive-green to red (mottled), blocky, sandy__

20

60

Tallahatta Formation:

Sand: fine to coarse-grained, angular, massive; interbedded

clay, gray to red (mottled), micaceous, sandy________

108

168

Lower Eocene: Wilcox Group (Undifferentiated):

Clay: black, fissile, carbonaceous, micaceous, coarsely glau-

conitic at depth.

18

186

Paleocene: Midway Group: Clayton Formation:

Limestone: light-gray, crystalline, coarsely but sparsely glau-

conitic, fossiliferous (casts and molds of megafossils, bryo-

zoan remains, and Foraminifera) ______________ _

9

195

Discorbis midwayensis, Eponides lotus, Cibicides praecursorius, Cibicides newmanae at 190-195.

Upper Cretaceous: Providence Sand:

Clay: yellowish-green to red (mottled), micaceous, sandy; in-

terbedded sand, fine to coarse-grained, angular, arkosic

35

230

Summary:
Middle Eocene (Lisbon formation)---------------------------------Middle Eocene (Tallahatta formation) ______ Lower Eocene (Wilcox group, undifferentiated) ___ Paleocene (Clayton formation)_ Upper Cretaceous (Providence sand) ______

60

60

108

168

18

186

9

195

35

230

Potential Water-Bearing Zones:
Sand: fine to coarse-grained___ _ Sand: fine to coarse-grained______

14

108

6

146

444

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Remarks:
All potential water-bearing sands above depth of 200 feet are probably dry due to local rugged topography and ground-water leakage (springs). Above well should have been drilled deeper in order to penetrate the underlying Providence sand which is known to contain good water-bearing sands.

Location: Owner: No. 1 Webster County Elementary and High
School Driller: Southeastern Drilling Company

WEBSTER COUNTY
Well No.: GGS 559 Elev.: 535

Thickness Depth

(feet)

(feet)

Residuum:

Clay: brick-red, very sandy, limonitic

10

10

Clay: bluish-gray to yellow to tan to dark-red (mottled),

sandy, limonitic -----------------------------------------------------------------------------

20

30

Middle Eocene: Claiborne Group: Tallahatta Formation:

Sand: fine to coarse-grained, coarser-grained with depth, very

angular, sparsely phosphatic______________________________________________

70

100

Lower Eocene: Wilcox Group (Undifferentiated):

Marl: dark-gray to black, lignitic, pyritiferous, micaceous,

glauconitic; some sand, fine to coarse-grained, angular,

somewhat arkosic __________________________ -----------------------------------------------

30

130

Limonite prominent at 100-110.

Glauconite abundant at 110-120.

Sand: fine to coarse-grained, angular; some marl, as above

10

140

Paleocene: Midway Group: Clayton Formation:

Clay: light-gray, blocky, carbonaceous, micaceous, silty___

10

150

Clay: black, fissile, carbonaceous, micaceous (finely dissemi-

nated); limestone, cream, dense, crystalline, coarsely glau-

conitic, pyritiferous, fossiliferous (fragments, casts and

molds of megafossils, echinoid and bryozoan remains, Os-

tracods, and Foraminifera); sand, as above_______________________

10

160

Limestone: as above______________________________________________________________________________ 20

180

Eponides lotus, Anomalina midwayensis, Discorbis midwayensis, Cibicides howelli at 160-170.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

445

Thickness (feet)
Limestone: light-gray, dense, crystalline, glauconitic, fossiliferous (fragments, casts and molds of megafossils, echinoid and bryozoan remains, Ostracods, and Foraminifera)______ 10

Limestone: cream, dense, crystalline, glauconitic, sandy, sandier with depth, fossiliferous (casts and molds of megafossils) __ ------------------------------------------------------------------------------- ____________ 15

Sand: fine to coarse-grained, angular_--------------------------------------

10

Depth (feet)
190
205 215

Upper Cretaceous: Providence Sand:

Sand: fine to coarse-grained, angular, arkosic; some clay,

gray to red (mottled), sandy, micaceous________________________

15

230

Mica flakes prominent at 220-230.

Summary:

Residuum

_______________________ --------------------------- __________________ 30

30

Middle Eocene (Tallahatta formation)--------------------------------_________________ 70

100

Lower Eocene (Wilcox group, undifferentiated)________________________________ 40

140

Paleocene (Clayton formation)---------------------------------------- --------------------- 75

215

Upper Cretaceous (Providence sand) _______ ---------------------

15

230

Potential Water-Bearing Zones:

Sand: fine to coarse-grained____________

10

140

Limestone -------------------------------------------- ------------------------------------------------------- 45

205

Sand: fine to coarse-grained____________ --------------------------- --------------------------- 10

215

WHEELER COUNTY

Location: 3.4 mi. northwest of Southern R.R. Depot at Scotland, west side of north-south county road at dwelling
Owner: No. 1 H. G. Samples Driller: J. L. Clegg Drilled: 1943

Well No.: GGS 92 Elev.: 243

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: mottled, sandy, limonitic

40

40

Clay: light-gray, sandy

65

105

Sand: fine to coarse-grained, angular _______ ------------------------------------ 73

178

Clay: yellowish-green, sandy

76

254

446

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Oligocene (Undifferentiated):

Thickness (feet)

Limestone: white, dense, nodular, much calcitized, fossiliferous (some Foraminifera) --------------------------------- ------------------------------ 34

Rotalia mexicana var. at 254-274.

Depth (feet)
288

Miocene (undifferentiated) _ Oligocene (undifferentiated)

Summary:

254

254

34

288

Limestone

Potential Water-Bearing Zones:

34

288

WHEELER COUNTY

Location: 3.5 mi. east of Little Ocmulgee River, north side of Highway 15, Land Lot 486, 7th Land District
Owner: No.1 Charles W. Jordan Heirs Driller: Natural Resources Corporation Drilled: 1954

Well No.: GGS 336 Elev.: 190

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: brick-red, very sandy, limonitic

20

20

Clay: tan to purple to red (mottled), sandy, limonitic __ _

10

30

Sand: fine-grained, angular, phosphatic (finely disseminated

grains); some clay, yellowish-green, blocky, sandy __________________ 30

60

Clay: light-brown, sandy__________

20

80

Sand: fine-grained to coarser-grained at depth, angular,

arkosic ___

----------------------------------

50

130

Clay: light-brown to yellowish-green, blocky, sandy __

60

190

Clay: as above but much sandier, phosphatic at depth

40

230

Brown phosphatic pebbles at 210-220.

Clay: as above; interbedded limestone, white, sandy __ _

90

320

White sandy limestone prominent at 240-250.

Clay: dark-green, blocky, phosphatic, sandy _____

20

340

Sand: fine-grained, angular; some clay, as above ___

10

350

Sand: as above; some limestone, light-brown, very sandy,

phosphatic, fossiliferous (macroshells) ---------------------------------------- 10

360

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

447

Oligocene (Undifferentiated):

Thickness Depth

(feet)

{feet)

Limestone: light-gray to somewhat reddish-brown at depth,

massive, dense, somewhat nodular, much calcitized, cherty

at certain levels, sandy, sparsely phosphatic near top, fos-

siliferous (casts and molds of megafossils, some echinoid

and bryozoan remains, and Foraminifera)

____________________ 90

450

Rotalia mexicana var. at 360-370. Gypsina globulal, Lepidocyclina1 sp. at 400-410.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: light-gray, much calcitized, crystalline, somewhat

granular (in texture), much softer than limestone above,

fossiliferous (abundant bryozoan remains and some Fora-

minifera) -------------------------------------------------------------------------------------------- 230

680

Robulus arcuato-striatus var., Nonion planatus, Eponides jacksonensis, Rotalia mexicana var., Asterigerina subacuta, Lepidocyclina sp. at 450-460.
Operculinoides floridensis and bryozoan remains common to abundant at 490-500.
Asterocyclina nassauensis at 570-580.

Limestone: cream, much calcitized, granular and somewhat

loosely consolidated, dolomitized at certain horizons, fossili-

ferous (bryozoan remains and Foraminifera); some mas-

size limestone, gray to white, nodular, fossiliferous (macro-

shells and bryozoan remains) _____________ ______________ ________________ 180

860

Camerina striatoreticulata at 680-690.
Amphistegina pinarensis var., Pseudophragmina flintensis at 690-700.

Dolomitic limestone prominent at 710-720.

Operculina mariannensis at 730-740.

Dolomitic limestone prominent at 820-830.

Middle Eocene: Claiborne Group (Undifferentiated):

Sand: fine to coarse-grained, angular; some limestone, as

above ____ ------------------------------------------------------------------------------------------ 40

900

Sand: fine to medium-grained, angular, somewhat argillaceous, indurated at certain levels, phosphatic, micaceous; interbedded marl, light-gray, silty, glauconitic, micaceous,

1Reworke'd ( ?) fossil of middle Eocene age.

448

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

fossiliferous (fish teeth, Ostracods, and Foraminifera);

limestone, light-gray, dense, massive, crystalline, fossilifer-

ous (macroshells and some bryozoan remains)

240

Glauconite common at 1020-1030.

Macroshells abundant at 1100-1110.

Sand: fine to medium-grained, angular, coarsely glauconitic

60

Marl: dark-gray, silty, carbonaceous, glauconitic, micaceous,

fossiliferous (Ostracods and Foraminifera)

130

Depth (feet)
1,140
1,200 1,330

In Lower Eocene and Paleocene (Undifferentiated):

Marl: dark-gray to black, fissile, carbonaceous, micaceous,

abundantly glauconitic ___________________

20

Glauconite abundant at 1330-1340.
Limestone: gray, dense, crystalline, glauconitic, fossiliferous (fragments, casts and molds of megafossils); some marl and sand, as above ____________________________ ------------------------- _________________ 100

Sand: fine to medium-grained, angular, phosphatic, fossiliferous (macroshells at certain horizons) __________________________________ 100

Sand: fine to medium-grained, angular, phosphatic; interbedded marl, dark-gray to black, fissile, carbonaceous, micaceous; limestone, light-gray, crystalline (in texture), sandy_ 230

1,350
1,450 1,550 1,780

'Upper Cretaceous: Providence and Ripley (Undifferentiated):

Marl: dark-gray, sandy, very micaceous, fossiliferous (macro-

shells, Ostracods, and Foraminifera)

------------------------------ 400

Gaudryina rudita, A nomalina pseudopapillosa at 1790-1800.

2,180

Summary:

Miocene (undifferentiated)

______________ 360

Oligocene (undifferentiated)

----------------------------- 90

Upper Eocene (Ocala limestone)

------------------------------------------------ 410

Middle Eocene (Claiborne group, undifferentiated) ________________________ 470

In lower Eocene and Paleocene (undifferentiated)---------------------------- 450

Upper Cretaceous (Providence and Ripley, undifferentiated) __________ 400

360 450 860 1,330 1,780 2,1802

Potential Water-Bearing Zones:

Limestone

500

Sand: fine to coarse-grained ------------------------------------------------------------------- 40

Sand: fine to medium-grained -------------------------------------------------------------- 60

Limestone --------------------------------------------------------------------------------------------------- 50

2 We1! not examined below 2180.

860 900 1,200 1,440

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

449

WHEELER COUNTY

Location: G.2 mi. northeast of No. 1 Jordan Heirs (oil Well No.: GGS 337

test) at tenant house, southwest quarter of Land Lot 87, 6th Land District

Owner: No.1 Emmett Joyce

Driller: Dixie Well Drilling Company

Drilled: 1953

Thickness Depth

(feet)

(feet)

No samples

100

100

In Miocene (Undifferentiated):

Clay: light-gray, sandy; sand, fine to medium-grained, angular__ 50

150

Sand: fine to medium-grained, angular, gray phosphatic

pebbles ____ -------------------------------------------------------------------------------------------- 20

170

Clay: yellowish-green, sandy; fragments of limestone, white,

rather dense, sandy -------------------------------------------------------------------------- 110

280

Sand: fine to medium-grained, subangular, phosphatic, fos-

siliferous (a coquina at depth) ________________ _____

65

345

Oligocene (Undifferentiated):

Limestone: light-gray, dense, crystalline, somewhat nodular,

sandy, sparsely phosphatic, fossiliferous (some macro-

shells, bryozoan remains, Ostracods, and Foraminifera) ________ 105

450

Quinqueloculina sp. at 340-350. Rotalia mexicana var. at 350-360. Asterigerina subacuta, Operculinoides sp. at 370-380.

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: cream, considerably calcitized, granular, fossili-

ferous (some macroshells, echinoid and bryozoan remains

and Foraminifera)

_------------------------------------------------------ 160

610

Camerina striatoreticulata, Lepidocyclina sp. at 450-460. Carnerina striatoreticulata common at 460-470. Lepidocyclina ocalana at 580-590. Bryozoan remains common at 590-610.

Summary:

No samples

_____________________ 100

100

In Miocene (undifferentiated) ------------------------------------------------------------- 245

345

Oligocene (undifferentiated) __ _

_____ _____ ________ 105

450

Upper Eocene (Ocala limestone) ___________________

____________________ 160

610

Limestone

Potential Water-Bearing Zones:

240

610

450

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: 1.5 mi. north of Pitts, west side of county road Owner: No. 1 A. C. Shell Driller: W. B. Graham Drilled: January 1947

WILCOX COUNTY
Well No.: GGS 68 Elev.: 405

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: bluish-gray to red (mottled), sandy, limonitic; inter-

bedded sand, fine to coarse-grained, angular, arkosic

140

140

Oligocene (Undifferentiated) i

Limestone: white, dense, crystalline, cherty, fossiliferous

(some Foraminifera) __________________ _______________

____________ 10

150

Rotalia mexicana var. at 140-150.

Miocene (undifferentiated) Oligocene (undifferentiated)

Summary:

Potential Water-Bearing Zones: Limestone _____________ -----------------------------------------------------------------------

140

140

10

150

10

150

Location: Approximately 3 mi. southeast of Pitts, east side of county road at dwelling
Owner: No. 1 H. A. Dorsey Driller: W. B. Graham Drilled: January 1947

WILCOX COUNTY
Well No.: GGS 70 Elev.: 395

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: light-gray to red (mottled), sandy, limonitic _

60

60

Clay: yellowish-green, sandy; residual limestone, at depth ______ 95

155

Oligocene (Undifferentiated):

Limestone: white, dense, crystalline, cherty ------------------------------------ 19

174

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

451

Miocene (undifferentiated) Oligocene (undifferentiated)

Summary:

Thickness Depth

(feet)

(feet)

155

155

19

174

Limestone

Potential Water-Bearing Zones:

19

174

Location:l.5 mi. east of Seville, 300 yd. east of tributary to Alapaha River, north side of Highway 280
Owner: No.5 U.S. Geological Survey test hole Driller: Scott Brothers Drilled: July 1946

WILCOX COUNTY Well No.: GGS 136

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated): Clay: mottled, sandy, limonitic Clay: yellowish-green, sandy ______ Clay: as above, with fragments of residual limestone _

10

10

60

70

10

80

Oligocene (Undifferentiated):

Limestone: white, cherty, fossiliferous (some Foraminifera)

39

119

Rotalia mexicana var. at 100-110. Asterigerina sp. at 110-119.

Miocene (undifferentiated) __ Oligocene (undifferentiated)

Summary:

80

80

39

119

Limestone

Potential Water-Bearing Zones:

39

119

452

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Approximately 3.5 mi. south of Pitts Owner: No.2 A. C. Shell Dr'iller: T. D. Yers Drilled: February 1947

WILCOX COUNTY
Well No.: GGS 142 Elev.: 405

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated): Clay: mottled, sandy, limonitic Clay: gray to yellowish-green, sandy

20

20

70

90

Oligocene (Undifferentiated):

Limestone: white, dense, crystalline, cherty

50

140

Quinqueloculina sp. at 140-150.

Limestone: white, soft, porous, fossiliferous (some Foramini-

fera) _____

57

197

Miocene (undifferentiated) Oligocene (undifferentiated)

Summary:

90

90

107

197

Limestone

Potential Water-Bearing Zones:

57

197

Location: State Fish Hatchery, Bowens Mill Owner: State (Georgia) Department of Wild Life Driller: Tucker and W offe Drilled: July 1953

WILCOX COUNTY Well No.: GGS 349

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated): Clay: mottled, very sandy, limonitic __ _ Clay: light-gray to pale-green, sandy _______________

45

45

10

55

In Oligocene (Undifferentiated):

Limestone: white, crystalline, much calcitized, cherty, fos-

siliferous (bryozoan remains and some Foraminifera)

52

107

Quinqueloculina sp., Rotalia mexicana var. at 60-75.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

453

Summary:
Miocene (undifferentiated) _ ___ _ In Oligocene (undifferentiated) __

Thickness Depth

(feet)

(feet)

55

55

52

107

Limestone

Potential Water-Bearing Zones:

42

107

Location: In Irwinton Owner: No. 1 William Sites Driller: Georgia-Florida Well Drilling Company Drilled: July 1955

WILKINSON COUNTY
Well No.: GGS 441 Elev.: 465 1

Thickness Depth

(feet)

(feet)

Upper Eocene: Jackson Group: Barnwell Formation:

Clay: brown, sandy, limonitic, and fragments of residual

limestone

___________________ 40

40

Marl: yellowish-green, silty, fossiliferous (some Foraminifera) 50

90

Valvulineria jacksonensis at 60-70.

Limestone: white, somewhat leached, sandy, fossiliferous

(macroshells, echinoid and bryozoan remains)

20

110

Upper Cretaceous: Tuscaloosa Formation:

Kaolin: white, micaceous, somewhat sandy

40

150

Sand: fine to coarse-grained, angular; interbedded clay (or

kaolin)

180

330

Summary:
Upper Eocene (Barnwell formation) Upper Cretaceous (Tuscaloosa formation)

110

110

180

330

Potential Water-Bearing Zones: S,and: fine to coarse-grained

150

330

'Average elevation based on Georgia State Highway Maps.

454

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Location: Southwestern part of county near Danville Owner: No. 1 Danville Elementary School Driller: Virginia Supply and Well Company

WILKINSON COUNTY
Well No.: GGS 529 Elev.: 4501

Thickness (feet)

Depth (feet)

Upper Eocene: Jackson Group: Barnwell Formation:

Clay: bluish-gray to tan to red (mottled), sandy, limonitic

40

40

Marl: dark-green, silty, sparsely glauconitic

10

50

Marl: light-gray, silty, blocky, glauconitic, fossiliferous (at

certain levels macroshells, echinoid and bryozoan remains,

and Foraminifera) ; interbedded limestone, light-gray,

dense, crystalline ________

105

155

N onion advena at 50-55. Valvulineria jacksonensis, N onion advena at 80-85.

Limestone: light-gray, dense, crystalline, sandier at depth,

coarsely but sparsely glauconitic, fossiliferous (casts and

molds of megafossils and abundant bryozoan remains)_

5

160

Middle Eocene: Claiborne Group (Undifferentiated):

Sand: fine to coarse-grained, angular, phosphatic at depth;

some limestone, as above________

45

205

Marl: light-gray, silty; some sand, fine to coarse-grained,

angular _____

_____________________ _

30

235

Limestone: light-gray, argillaceous, very sandy

5

240

Clay: dark-green to brown, somewhat indurated and fissile,

abundantly glauconitic, carbonaceous, micaceous, pyritifer-

ous, fossiliferous (rare Foraminifera) __ _

20

260

Sand: coarse-grained, angular, phosphatic, somewhat arkosic_ 30

290

Sand: as above; some clay, brown, sandy, lignitic

30

320

Summary:
Upper Eocene (Barnwell formation) _______ Middle Eocene (Claiborne group, undifferentiated) __

160

160

160

320

Sand: coarse-grained

Potential Water-Bearing Zones:

30

290

1Average elevation based on Georgia State Highway Maps.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

455

Location: Approximately 3.25 mi. southeast of Oakfield, 0.1 mi. north of a grain mill at tenant house
Owner: No.1 Will Aultman Driller: H. B. Truluck Drilled: July 1951

WORTH COUNTY
Well No.: GGS 232 Elev.: 250

Thickness Depth

(feet)

(feet)

Residuum:

Clay: dark-brown to black, sandy, lignitic, and residual lime-

stone ____ ___________

--------------------------------- -----------------

40

40

No samples_

10

50

In Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, calcitized, fossiliferous (macroshells, abun-

dant bryozoan remains, and some Foraminifera) __________________ 30

80

Operculinoides sp. at 50-60. Argyrotheca sp. at 70-80.

Summary:

Residuum ______________ __________________

____________________________ ___________________ 40

40

No samples ______________________________________ ---------------------------------------------In upper Eocene (Ocala limestone) _______________ ________________________

10

50

30

80

Limestone __ _

Potential Water-Beari:hg Zones:

30

80

Location: Doerun Owner: No. 1 Minton Elementary School Driller: Pierson Well Drilling Company Drilled: 1955

WORTH COUNTY
Well No.: GGS 456 Elev.: 410

Thickness Depth

(feet)

(feet)

Miocene (Undifferentiated):

Clay: mottled, sandy, limonitic________________________________________________

50

50

Clay: yellowish-green, sandy____________________________________________________________ 10

60

Sand: fine to coarse-grained, angular______________________________________________ 10

70

456

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)

Clay: yellowish-green, sandy; interbedded limestone, white,

dense, calcitized, sandy___________________________________

210

Depth (feet)
280

Limestone prominent at 160-170.

In Oligocene (Undifferentiated): Limestone: white, somewhat sandy, fossiliferous Rotalia mexicana var. at 280-290. Pyrgo sp. at 290-300.

20

300

Summary:
Miocene (undifferentiated) In Oligocene (undifferentiated) ______

280

280

20

300

Potential Water-Bearing Zones: Limestone ___________________ -------------------------------------

20

300

Samples of poor quality.

Remarks:

Location: 0.25 mi. west of town of Red Rock Owner: No. 1 Red Rock Elementary School Driller: W. H. Pierson Drilling Company Drilled: 1955

WORTH COUNTY
Well No.: GGS 471 Elev.: 330

Thickness Depth

(feet)

(feet)

Residuum:

Clay: mottled, sandy, limonitic_

10

10

Clay: olive-green to red (somewhat mottled), carbonaceous,

sandy, and fragments of chert

10

20

Clay: as above, with residual limestone _

40

60

No samples _______

30

90

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

457

In Upper Eocene: Jackson Group: Ocala Limestone:

Th iekness (feet)

Limestone: white, dense, crystalline, highly calcitized, fossiliferous at certain levels (macroshells, bryozoan remains, and some Foraminifera) -------------------------------------------------------------------------- 155

Robulus alato-limbatus, Siphonina jacksonensis, Eponides jacksonensis, Gypsina globula at 90-100. Lepidocyclina sp. at 110-120. Gypsina globula common at 125-130.

Limestone: as above, but coarsely glauconitic____ ----------------------------- 15

Operculina mariannensis at 255-260.

Limestone: white, dense, sandy, fossiliferous (macroshells and Foraminifera) ----------------------------------------- ---------------------------------- 40

Amphistegina pinarensis var. at 285-290.

Sand: fine to medium-grained, angular_

15

Depth (feet)
245
260 300 315

Summary:

Residuum ___________

-------------------------------------------------------

60

60

No samples _________ --------------------------------------------------------------------------------------- 30

90

In upper Eocene (Ocala limestone)_

225

315

Potential Water-Bearing Zones:
Limestone ______________________ -------------------------- __________________ Sand: fine to medium-grained __

210

300

15

315

BEAUFORT COUNTY, S.C.

Location: Approximately 0.25 mi. west of Well Well No.: GGS 385

66, Hilton Island

Elev. : 15

Owner: No.2 USGS Test Hole (Observation Well)

Driller: M. M. Gray Drilling Company

Drilled: June 1954

Thickness (feet)

Depth (feet)

Pliocene to Recent (Undifferentiated):

Sand: fine-grained, finely disseminated phosphatic grains;

interbedded clay, dark-gray, silty, somewhat indurated,

carbonaceous, micaceous, fossiliferous (macroshells at cer-

tain horizons) ___

______________ ---------------------------------------

20

20

458

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Miocene (Undifferentiated):

Thickness (feet)

Clay: dark-green, sandy, phosphatic_

35

Sand: coarse-grained, angular; some clay, as above_

10

Limestone: white to light-gray, very sandy, phosphatic, fos-

siliferous at depth (fragments, casts and molds of megafos-

sils, echinoid and bryozoan remains, Ostracods, and some

Foraminifera)

________________ _

55

Textularia? sp. at 100-105.

Clay: dark-green, very sandy, phosphatic.

10

Sand: medium-grained, phosphatic_

5

Depth (feet)
55 65
120
130 135

Oligocene (Undifferentiated):

Limestone: light-gray, dense, nodular, much calcitized, fossil-

iferous (bryozoan remains and some Foraminifera)_

5

140

Limestone: cream, softer, somewhat nodular, fossiliferous

(casts and molds of megafossils, bryozoan and echinoid re-

mains, and some Foraminifera)__

_ ____ ___ ____ 40

180

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, much calcitized and crystalline, fossilifer-

ous (abundant bryozoan remains and some Foraminifera)_ 115

295

Pseudophragmina flintensis at 205-210.

Limestone: cream, much calcitized and granular, somewhat

loosely consolidated, sparsely glauconitic, fossiliferous at

certain levels (bryozoan remains and Foraminifera)

250

545

Camerina striatoreticulata at 365-375.

Middle Eocene: Claioorne Group: Lisbon Formation:

Limestone: as above but more massive and crystalline at cer-

tain levels, somewhat sandy, fossiliferous (Foraminifera at

certain levels)

185

730

Lepidocyclina sp. at 555-565.

Marl: light-gray to cream, fossiliferous (echinoid and bryo-

zoan remains, Ostracods, and abundant Foraminifera)

10

740

Spiroplectammina mississippiensis var., Textularia adalta, Textularia dibollensis var. humblei, Robulus alato-limbatus, Dentalina jacksonensis, Nonion planatus, Nonionella hantkeni var. spissa, Siphonina jacksonensis, Marginulina cocoaensis, Gyroidina soldanii var., Discorbis assulata, Lagena

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

459

Thickness (feet)
acuticusta, Planularia sp., Spirillina vicksburgensis, Patellina advena, Guttulina problema, Globulina gibba, Polymorphina aclvena var., Sigmomorphina semitecta, Bolivina jacksonensis var., A ngulogerina vicksburgensis, Buliminella robertsi, Oibicides lobatulus, Cibicides danvillensis, Cibicides pseudoungerianus var., Cibicides mississippiensis, Cibicides americanus var. antiquus, Cibicides westi at 730-740.

Depth (feet)

Summary:
Pliocene to Recent (undifferentiated)_ Miocene (undifferentiated) Oligocene (undifferentiated) _ Upper Eocene (Ocala limestone) Middle Eocene (Lisbon formation) _________

20

20

115

135

45

180

365

545

195

740

Potential Water-Bearing Zones:
Sand: medium-grained _ Limestone

5

135

595

730

Location: Daufuskie Island Owner: No.3 USGS Test Hole Driller: M. M. Gray Well Drilling Company Drilled: 1958

BEAUFORT COUNTY, S.C.
Well No.: GGS 566 Elev.: 20

Thickness Depth

(feet)

(feet)

No samples __

42

42

In Miocene (Undifferentiated):

Sand: fine to medium-grained, subangular, sparsely phos-

phatic; interbedded clay, dark-gray to dark-green, somewhat

indurated, blocky, silty, micaceous, carbonaceous, fossilifer-

ous (macroshells at certain levels) __

41

83

Sand: medium-grained, subrounded, phosphatic

3

86

Clay: yellowish-green, blocky, tough, sandy

10

96

Oligocene (Undifferentiated):

Limestone: light-gray, massive, saccharoidal, very porous1,

sandy, sparsely phosphatic, fossiliferous, carrying casts

and molds of megafossils

10

106

1Cavities represent former megafossils subsequently dissolved by ground water.

460

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Thickness (feet)
No samples __________________ ---------------------------------------------------------------------------- 11

Limestone: cream, nodular, saccharoidal, somewhat soft and

powdery at certain horizons, very sandy, sparsely phos-

phatic, fossiliferous (casts and molds of megafossils, echi-

noid and bryozoan remains, and some Foraminifera) ____

18

Rotalia mexicana var., Pyrgo sp., Quinqueloculina sp., Dictyoconus2 sp. at 117-122.

Limestone: cream to light-gray, massive, somewhat calcitized

and nodular, fossiliferous (as above) __ --------------------------------

55

Operculinoides sp. at 135-140.

Depth (feet)
117
135
190

Upper Eocene: Jackson Group: Ocala Limestone:

Limestone: white, somewhat crystalline and calcitized, fossil-

iferous (some macroshells, abundant bryozoan remains, some

Ostracods, Foraminifera) ---------------------------------------------------------------- 70

260

Gypsina globula, Eponides cocoaensis, Eponides jacksonensis, Discorbis assulata, Nonion planatus, Cancris sp., Planularia sp., Siphonina jacksonensis, Globorotalia cocoaensis, Guttulina irregularis, Cibicides americanus, Cibicides mississippiensis at 190-196.
Operculinoides floridensis, Asterocyclina nassauensis at 196-200.
Lingulina sp. at 200-205.

Limestone: light-gray, rather massive, much calcitized and

crystalline, somewhat nodular, fossiliferous (as above)_

45

305

Limestone: cream, much calcitized and granular, somewhat

loosely consolidated, fossiliferous (Foraminifera at certain

levels) ____ ----------------------------------- ___ ___ ______ ____ _

_____ _______ ________ 255

560

Orthophragmina flintensis at 345-350. Camerina st1iatoreticulata common at 426-431.

Middle Eocene: Claiborne Group: Lisbon Formation:

Limestone: as above, but more massive and calcitized, some-

what sandy, fossiliferous at certain levels (megafossils,

bryozoan remains, and Foraminifera) _______________________

140

700

Lepidocyclina sp., Operculinoides sp. at 645-650.

Limestone: white, massive, much calcitized, somewhat granu-

lar (in texture), coarsely glauconitic, sparsely fossiliferous

(macroshells at certain levels) ----------------------------------------

5

705

Marl: yellowish-green; interbedded limestone, as above _______________ 41

746

2Reworked ( 7) fossH of Eocene age.

WELL LOGS OF THE COASTAL PLAIN OF GEORGIA

461

Summary:

No samples ____

_______________ _

In Miocene (undifferentiated) ______________

Oligocene (undifferentiated) ___

Upper Eocene (Ocala limestone)

Middle Eocene (Lisbon formation)_

Thickness (feet)

Depth (feet)

42

42

54

96

94

190

370

560

186

746

Limestone

Potential Water-Bearing Zones:

395

530

Remarks:
The interval 530-700 may represent late middle Eocene, i.e., Gosport equivalent. At 645-650 a species of Lepidocyclina was identified as possibly Lepid. ariana, a middle Eocene Lepidocycline. However, more specimens are needed before a definite specific identification of this species may be made.

References
Applin, P. L., 1951, Preliminary report on buried pre-Mesozoic rocks in Florida and adjacent States: U.S. Geol. Survey Circ. 91, 28 p.
Applin, P. L., and Applin, E. R., 1944, Regional subsurface stratigraphy and structure of Florida and southern Georgia: Am. Assoc. Petroleum Geologists Bull., v. 28, no. 12, p. 1673-1753.
1947, Regional subsurface stratigraphy, structure, and correlation of middle and early Upper Cretaceous rocks in Alabama, Georgia, and north Florida: U.S. Geol. Survey Oil and Gas Inv. Prelim. Chart 26.
Cole, W. S., and Herrick, S. M., 1953, Two species of larger Foraminifera from Paleocene beds in Georgia: Bull. Am. Paleontology, v. 35, no. 148, 16 p., 2 pl.
Cooke, C. W., 1943, Geology of the Coastal Plain of Georgia: U.S. Geol. Survey Bull. 941, 121 p.
Eargle, D. H., 1955, Stratigraphy of the outcropping Cretaceous rocks of Georgia: U.S. Geol. Survey Bull. 1014, 101 p.
LaMoreaux, P. E., 1946, Geology of the Coastal Plain of east-central Georgia: Georgia Geol. Survey Bull. 50, pt. 1, 26 p.
1946, Geology and ground-water resources of the Coastal Plain of east-central Georgia: Georgia Geol. Survey Bull. 52, 173 p.
LeGrand, H. E., Furcron, A. S., and others, 1956, Geology and ground-water resources of central-east Georgia: Ga. Geol. Survey Bull. 64, 174 p.
Richards, H. G., 1945, Subsurface stratigraphy of Atlantic Coastal Plain between New Jersey and Georgia: Am. Assoc. Petroleum Geologists Bull., v. 29, no. 7, 70 p.

462

GEORGIA GEOLOGICAL SURVEY BULLETIN 70

Stephenson, L. W., and Veatch, J. 0., 1915, Underground waters of the Coastal Plain of Georgia: U.S. Geol. Survey Water-Supply Paper 341, 539 p.
Veatch, J. 0., and Stephenson, L. W., 1911, Preliminary report on the geology of the Coastal Plain of Georgia: Georgia Geol. Survey Bull. 26, 466 p.
Warren, M.A., 1944, Artesian Water in southeastern Georgia with special reference to the coastal area: Georgia Geol. Survey Bull. 49, 140 p.

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EXPLANATION
...Oil Test
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Figure I.-Well location map, Coasta \ Plain of Georgia