Geology of the Barnesville Hydrogeologic Research Site, Lamar County, Georgia 
DeanaSneyd 
GEORGIA DEPARTMENT OF NA1URAL RESOURCES ENVIRONMENTAL PROTECfiON DIVISION GEORGIA GEOLOOIC SURVEY Atlanta 1995 
INFORMATION CIRCULAR 98 
 
  Geology of the Barnesville Hydrogeologic Research Site, Lamar County, Georgia 
DeanaSneyd 
GEORGIA DEPARTMENT OF NA1URAL RESOURCES Joe D. Tanner, Commissioner 
ENVIRONMENTAL PROJECTION DMSION Harold F. Reheis, Director 
GEORGIA GEOLOGIC SURVEY William H. McLemore, State Geologist 
Atlanta 1995 
INFORMATION CIRCULAR 98 
 
  ABSTRACT 
Geologic mapping around the Barnesville hydrogeologic research site was conducted in conjunction with the North Georgia Hydrology Program (NGHP). Structural and lithologic data, with an emphasis on directional weaknesses and weathering characteristics, are recorded for each rock unit in the Barnesville area. The Towaliga Fault Zone, a major lithologic and structural discontinuity, traverses east to west through the study area. Four lithologic units characterize the area north of the Towaliga Fault Zone: 1) porphyroblastic biotite-quartzfeldspar gneiss; 2) quartz-muscovite schist sillimanite; 3) interlayered gondite, gneiss, amphibolite, and schist; and 4) graphite-sillimanite schist. Lithologic units that occur within the Towaliga Fault Zone include: 1) sheared and silicified biotite-quartz-feldspar gneiss garnet muscovite; 2) sheared biotite-feldspar-quartz-mus_covite schist garnet kyanite; and 3) intensely granulated cataclasite (flinty crush rock). Quartzite and garnet-quartzmuscovite schist  kyanite occur within and at the southern margin of the Towaliga Fault Zone. Garnetmuscovite-biotite-quartz-feldspar gneiss with local cataclasite lenses characterizes the area south of the Towaliga Fault Zone. Metamorphic mineral assemblages observed within and south ofthe Towaliga Fault Zone indicate kyanite-grade metamorphism; whereas, mineral assemblages north of the Towaliga Fault Zone are characteristic ofsillimanite-grade metamorphism. Early, regional deformation is expressed by isoclinal folding and thrust faulting. The Towaliga Fault Zone overprints the regional deformation and is characterized by an extensive belt of heterogeneously sheared and brecciated rocks that have endured multiple episodes of ductile and brittle movement. Four joint orientations are prominent in the study area: northwest-southeast, northeastsouthwest, east-west, and north-south. The variable dominance of these features is a function of rock type and geographic location with respect to the Towaliga Fault Zone. Differential weathering occurs at contacts between units with significantly different rheologic properties (i.e., feldspathic gneiss versus quartzite). Deep weathering of less resistant units adjacent to more resistant units suggests preferential movement of ground water. Several units with differing rheologic contrast occur in the fault zone due to heterogeneous distribution of shearing and silicification; this heterogeneity increases the potential for the development of high yield wells. 
 
 ii 
 
 TABLE OF CONTENTS 
IN1RODUCTION .......................................................................................................................................................................... 1 PREVIOUS WORK ........................................................................................................................................................................ 2 GEOLOOIC SETI'ING ................................................................................................................................................................... 2 LITHOLOGICDESCRIPI10NS ................................................................................................................................................... 2 NorthoftheTowaligaFaultZone .................................................................................................................................................... 2 
Porphyroblastic biotite gneiss .................................................................................................................................................. 2 Schist ........................................................................................................................................................................................ 2 Amphibolite ............................................................................................................................................................................. 4 Migmatitic gneiss andschist ..................................................................................................................................................... 4 Gondite-Amphibolite-Schist-Gneiss ....................................................................................................................................... 4 Graphite-Sillimanite Schist ...................................................................................................................................................... 4 TowaligaFaultZone ........................................................................................................................................................................ 6 Augen Gneiss ....................................................................................................................................................................-..... 6 Schistose Gneiss ....................................................................................................................................................................... 6 SouthoftheTowaligaFaultZone .................................................................................................................................................... 6 lnterJayeredQuartziteandSchist ............................................................................................................................................. 6 GarnetiferousBiotiteGneiss .................................................................................................................................................... 7 Cataclasite ................................................................................................................................................................................ 7 S1RATIGRAPillC CORRELATION ........................................................................................................................................... 7 S1RUCfURE ................................................................................................................................................................................. 8 EarlyFoldsandFaults ...................................................................................................................................................................... 8 TowaligaFaultZone ........................................................................................................................................................................ 8 METAMORPillSM ....................................................................................................................................................................... 11 HYDROGEOLOGY ...................................................................................................................................................................... 11 CONCLUSIONS .................. .......................................................................................................................................................... 14 REFERENCES CITED ................................................................................................................................................................. 15 
FIGURES 
1. Location of the Barnesville hydrogeologic research site ......................................................................................................... 1 2. Drill hole location map of the Barnesville hydrogeologic research site .................................................................................. 3 3. Regional stratigraphic correlation oflithologies mapped on the Barnesville quadrangle ...................................................... 5 4. Contoured, lower hemisphere, equal-area stereoplot of248 poles to foliation outside the Towaliga Fault Zone ................ 9 5. Contoured, lower hemisphere, equal-area stereoplot of 167 poles to foliation within the TowaligaFaultZone .................. 10 6. Contoured, lower hemisphere, equal-area stereoplot of 141 poles to foliation in a one-mile radius around the Barnes- 
ville hydrogeologic research site ............................................................................................................................................ 10 7. Contoured, lower hemisphere, equal-area stereoplot of330 poles to joint surfaces outside the Towaliga Fault Zone ........ 12 8. Contoured, lower hemisphere, equal-area stereoplot of175 poles to joint surfaces within the Towaliga Fault Zone .......... 12 9. Contoured, lower hemisphere, equal-area stereoplot of 153 poles to joint surfaces within a one-mile radius around 
theBarnesvillehydrogeologicresearchsite ........................................................................................................................... 13 
APPENDICES 
1. FoliationandJointData .............................................................................................................................................................. 16 
PLATES 
1. Geologic map ofthe Barnesville hydrogeologic research site, Lamar County, Georgia ..................................... cover envelope 2. Jointsetmap; Barnesvillehydrogeologic research site,LamarCounty, Georgia .................................................. coverenvelope 
iii 
 
 iv 
 
 INTRODUCTION 
Historically, hydrogeologic systems have predominantly been characterized for Coastal Plain aquifers; consequently, there has been a paucity of systematic research concerning the geologic and hydrologic controls on ground-water systems in the crystalline rocks of Georgia In 1987, the North Georgia Hydrology Program (NGHP) of the Georgia Geologic Survey (GGS) initiated a large-scale study to develop a better understanding of hydrogeologic systems in the crystalline rocks of the Piedmont and Blue Ridge physiographic provinces of Georgia. During the past eight years, three hydrogeologic research sites were established in central and northern Georgia asapartoftheNGHP(Fig.1). lnformationgatheredateachof these sites has been focused primarily on the hydrologic characterof the specific site. Currently, the study is being expanded to incorporate a more comprehensive geologic characterization of each research site and explore its relationship to the hydrogeology in the area. Ultimately, the correlation ofthe geologic data to the hydrologic data will provide a better understanding of the combination of geologic features that enhance the flow of ground water in crystalline rocks. This knowledge will reduce the risk involved in ground-water supply development and proteCtion. 
The Barnesville hydrogeologic research site was developed during the summer of 1990 and consists of 1production 
 
well and 8 monitoring wells, two of which are core holes (Fig. 2). This site was chosen as the first site for a complete and comprehensive geologic characterization and is the focus of this study. The Barnesville 7.5 minute U.S. Geological Survey quadrangle occupies nearly one-halfofLamar County, cenlml Georgia. Topographic elevations vary from greater than 1040 feet on top ofHog Mountain to less than 620 feet in the swampy flood plains ofTowaliga Creek. Streams and creeks within this quadrangle show a complex drainage pattern controlled by variable lithologic, structural and weathering characteristics of the underlying crystalline rocks (Fig. 3). 
The project area comprises approximately 80% of the Barnesville quadrangle. Geologic mapping at 1:24,000 scale 
includes lithologic and structural characterization of an area 
within a four mile radius of the study site (Plate 1). Lithologic and structural data were gathered with an emphasis on directional weaknesses (i.e.,compositionallayering, foliation,joints, faults, shearing) and their weathering characteristics. A greater concentration of similar data were gathered within a one mile radius of the drill holes to enable a more systematic correlation with hydrogeologic data. A total of50 days were spent in field mapping, sampling, and photo-documenting specific geologic and hydrogeologic features. Because the focus of this study is to describe pertinent geologic features, the relationship of the geologic features to the hydrogeologic data will be discussed in a separate report. 
 
Barnesville Hydrogeologic Research Site 
 
Figure 1. Location of the Barnesville Hydrogeologic Research Site. 1 
 
 PREVIOUS WORK 
 
North of the Towaliga Fault Zone 
 
Crickmay (1952) and Pickering (1976) provide a summary and synthesis of the geology of the crystalline rocks of Georgia. Several regional geologic studies have included portions of the Barnesville quadrangle. Many of these studies have focused on the Pine Mountain Window and its northern terminus, the Towaliga Fault Both of these features roughly trend east to west through the centerof the quadrangle. Hooper and Hatcher (1989), Higgins and others (1988), Sears and others (1981), Atkins and Lineback (1992) and Higgins and Atkins (unpublished map) provide the most recent interpretations of this region. Grant (1967) provides a brief geologic descriptionofLamarCountywith an emphasis on the Towaliga Faultin the Barnesvillearea. Agravity surveyofLamarCounty was conducted by Favilla (1985), and Gorday (1989) assessed and summarized the hydrogeologic environment of Lamar County. Steele and others (in preparation) are investigating the hydrologic character of the Barnesville hydrogeologic research site. 
GEOLOGIC SETTING 
The Barnesville quadrangle is characterized by three northeasterly to easterly trending assemblages ofrocks (Plate 1). The northwestern-most assemblage ofrocks consists ofan interlayered sequence of schist, gneiss, and amphibolite; whereas the southern-most assemblage consists of schist and Grenvillianage gneiss (Higgins and others, 1988). These two assemblages ofrocks are separated by the Towaliga FaultZone. The central assemblage is characterized by an extensive belt of differentially sheared and brecciated gneisses and schists which texturally range from cataclasites to mylonites. 
At least three major deformational events have been recognized within the map area (Grant, 1967). Early, tight to isoclinal, west-southwest- to west-northwest-trendingfolds are overprinted by broad, open north-northwest to north-northeast trending folds. A third deformational event, involving multiple episodes of ductile and brittle movement within the Towaliga Fault Zone, is recognized throughout the central portion of the project area. The Towaliga Fault Zone is interpreted as representing a major structural and lithologic discontinuity across the Barnesville quadrangle; therefore, lithologic descriptions are subdivided into three categories: rock units north of the Towaliga Fault Zone, rock units within the Towaliga Fault Zone, and rock units south of the Towaliga Fault Zone. 
 
Porphyroblastic biotite gneiss Aheterogeneous mass ofinterlayeredgneiss,amphibolite, and schistoccupies most ofthe northern halfof the Barnesville quadrangle. The gneiss is texturally and mineralogically variable, ranging from: 1) porphyroblastic gneiss (most abundant), to 2) granitic gneiss, to 3) biotite schist (least abundant), all containing variable amounts of pegmatitic material. The porphyroblastic gneiss is characterized as a granular, mediumto coarse-grained, modemtely layered unit containing an equigranular biotite-quartz-feldspar "matrix" and coarser (0.5 to 4.0 em diameter) feldspar quartz porphyroblasts. Garnet is mre in the northern porphyroblastic gneiss assemblage. Locally, this unit appears exfoliated in saprolite, but generally occurs as either loose, granular saprolite that maintains its fabric if undisturbed, or as deeply weathered soil. The porphyroblastic gneiss weathers reddish orange due to moderate oxidation of biotite, and is commonly characterized by black Fe-Mn oxide staining along joints. Feldspar and biotite commonly are partially weathered to completely weathered, occurring as white clay (probably kaolinite) and vermiculite, respectively. Because of the uniformity and deeply weathered nature of this gneissic sequence, the topography is chamcterizedbynearlyflattogentlyrollinghillswherefreshoutcropand saprolite are mre. The granitic gneiss generally occurs as a medium-gmined, equigranular quartz and feldspar gneiss with disseminated flakes of fme-grained biotite. Unlike the porphyroblastic gneiss, this unit has poorly developed segregation layering and weathers to a white to grayish orange-pink saprolite. Locally, feldspathic quartz-biotite schist is interlayered with the porphyroblastic gneiss. The layers range in thickness from< 1to 3meters. This unit is fine- to medium-gmined, black and well foliated due to the alignment ofbiotite. When present in the porphyroblastic gneiss, the entire sequence appears moderately well-layered, blocky in outcrop (versus rounded) and more resistant to weathering. Pegmatitic pods and spherical masses composed ofquartz and feldspar usually occur concordant with layering in the porphyroblastic and granitic gneiss. These pods and spherical masses are highly variable in length, ranging from 1 em to >1 m, are usually fairly narrow (1 to 10 em), and locally appear boudined and/or rotated. They are roughly equigranular, massive, and weatherwhite from the decomposition offeldspar and lack offerromagnesium minerals. These units are inferred to represent metamorphic pegmatites. 
 
LITHOLOGIC DESCRIPTIONS 
In this section, each major lithologic unit is characterized in relation to mineralogy, grain size, compositional layering, and various weathering features. Because of their effects on depth ofweathering,efficiencyofgroundwaterflow, and water quality, these factors are relevant to the hydrogeologic character of the rock units. The distribution of each of these units is illustrated on Plate 1. 
 
Schist Two different schists occur interlayered with the porphyroblastic gneiss: 1) quartz-muscovite schist, and 2) sillimanite-quartz-muscovite schist The quartz-muscovite schist is medium-grained, modemtely-well foliated and locally contains garnet, biotite, and chlorite. Thefoliation is planarand occurs as thin layers giving the schist a fissile to locally slabby appearance. The schist weathers silvery reddish-green to reddish-yellow depending on the intensity of oxidation along 
 
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Figure 2. Drill hole location map of the Barnesville hydrogeologic research site . (Map from Barnesville U.S.G.S. 7.5 minute quadrangle, 1973.) 
 
3 
 
 prominent planes of weakness (i.e. foliation). Because of the are locally garnetiferous, possibly indicating effects of hydro- 
 
higher muscovite and quartz content. this schist is more resis- thennal alteration and/or contact metamorphism related to the 
 
tant to weathering than the porphyroblastic gneiss; thus it crops Hollonville Granite. 
 
outin areas where the gneiss iscovered. The schistose units are 
 
scattered throughout the gneiss and range in thickness from 3 to 
 
Gondile-Amphibolile-Schist-Gneiss 
 
30 meters. Locally, pegmatitic quartz-feldspar pods occur in 
 
A band of interlayered gondite, amphibolite, schist. and 
 
the schist. 
 
gneiss (referred to inclusively as gondite) trends northeast- 
 
The sillimanite-quartz-muscovite schist occurs as a me- southwest across the northwestern comer of the Barnesville 
 
dium-grained, moderately-well foliated, fissile schist with lo- quadrangle. This intercalated sequence of rocks is generally 
 
cal concentrations of graphite, garnet and feldspar. Locally, 100 to 200 meters thick (in outcrop width) and extends for 
 
quartz veins or pods containing sillimanite and feldspar occur several kilometers northeast and southwest of the Barnesville 
 
concordant with foliation. This unit weathers purplish to quadrangle, serving as an excellent regional marker bed in this 
 
pinkish red and has black Fe-Mn oxide staining and pods part of the Piedmont (Higgins and Atkins, unpublished map- 
 
developedcoplanarwith foliation andjointfaces. Similarto the ping). Gondite occurs as a texturally massive, thin (up to 1m) 
 
quartz-muscoviteschist, the sillimanite-quartz-muscoviteschist layer that is fine- to medium-grained and equigranular consist- 
 
is also more resistant to weathering than is the gneiss. 
 
ing of spessartine-rich garnet and quartz  muscovite. In 
 
weathered outcrops, the gondite characteristically occurs as a 
 
Amphibolile 
 
fairly resistant. blocky unit The typical black color of this unit 
 
Plagioclase-hornblende amphibolite is characterized as a is due to a high manganese content The associated schist 
 
fine-grained, equigranular unit that is massive and resistant to comprises the bulk of this sequence of rocks and is character- 
 
weathering. In more deeply weatheredoutcrops, this unit forms ized as a medium-grained. moderately-well foliated, fissile to 
 
a yellowish to reddish-brown saprolite that contains a distinc- slabby, garnetiferous sillimanite-quartz-muscovite schist that 
 
tiveboxworktexture(appears honeycombedathand-lens scale), weathers purplish-red. Numerous amphibolite and 
 
giving the rock acharacteristic porous appearance. The amphi- porphyroblastic gneiss interlayers represent a minor portion of 
 
bolite usually crops out as rectangular blocky masses due to this rock unit and are similar to those previously described. 
 
extensive joint development lnterlayers ofamphibolite in the 
 
porphyroblastic gneiss are very sparse, occurring as relatively 
 
Grophile-SillinuJnile Schist 
 
thin (<1m), discontinuous lenses. 
 
The graphite-sillimanite schist occurs northwest of the 
 
gondite-bearing unit in the extreme northwestern comer of the 
 
Migmatitic gneiss and schist 
 
Barnesville quadrangle. The graphite-sillimanite schist is 
 
The porphyroblastic gneiss and associated schist have medium-grained, moderately-well foliated and is locally gar- 
 
been migmatized to varying degrees in the northeastern comer netiferous. This unit weathers pinkish to purplish red-white, 
 
of the Barnesville quadrangle by inlrusive effects of the has local concentrations ofFe-Mn oxide, and is usually fairly 
 
Hollonville Granite. The Hollonville Granite occurs north of resistant to weathering. Sillimanite occurs as white, fibrous 
 
the Barnesville quadrangle on the Orchard Hill quadrangle needles roughly 5 to 10 mm long and 0.5 to 1mm wide, with a 
 
(Atkins and Lineback, 1992, and Higgins and Atkins, unpu~ lessprominentcleavageorientedperpendicular to the long axis. 
 
lished mapping). The migmatized units occur as medium- Submetallic, black graphite plates, up to 0.5 to 1 mm in 
 
grained, equigranular, moderately well-layered porphyrobastic diameter, are near-ubiquitous within the sillimanite fibers. 
 
and granitic gneiss interlayered with biotite schist The schist Foliation is generally planar, although locally it is highly 
 
layers, locally garnetiferous, contain high concentrations of defonned as indicated by complex interference patterns at 
 
biotite and the gneiss/schist contacts are abrupt Biotite segre- outcrop scale. Quartz veins containing sillimanite  feldspar 
 
gations are moderately-well foliated and define ptygmatic occur concordant to foliation. Additionally. a single interlayer 
 
folding. Locally, areas less migmitized appear similar to the of porphyroblastic gneiss was observed in the extreme north- 
 
porphyroblastic gneiss. Migmitization is best developed in western comer of the quadrangle. 
 
heterogeneous zones where more schistose units are interlay- 
 
.A wide zone of resistant. intensely folded and faulted 
 
ered with the gneiss. This association may be indicative of graphite-sillimanite schist occurs in three outcrops along topo- 
 
preferential movement of hydrothennal fluids along planes of graphically high areas that trendparallel to the gondite-bearing 
 
weakness. The migmitized gneiss weathers reddish-orange unit The graphite-sillimaniteschistis interlayered with biotite- 
 
and has local black Fe-Mn oxide staining and "pod-like" muscovite-quartz schist  chlorite  feldspar and massive 
 
concentrations along foliation planes. This unit is generally blocks ofporphyroblastic gneiss which appear to beinfoldedin 
 
more resistant than its unmigmatized parent and is more com- the schist Several elongate lenses and pods of massive, very 
 
.. 
 
monly exposed. 
 
competent. equigranular quartz garnet granofels (gondite) 
 
Analogous to the porphyroblastic gneiss, the migmitized occur in the schist The adjacent foliation is highly defonned, 
 
gneiss is intercalated with biotite-sillimanite-quartz-muscovite probably accommodating strain around the more resistant 
 
schist, and quartzo-feldspathic pegmatitic pods aligned like granofels pods. A single muscovite-quartz-feldspar pegmatite 
 
augens or boudins along foliation. Unlike the porphyroblastic was observed. An abundance of quartz veining occurs in all 
 
gneiss, the migmitized gneiss and associated sillimanite schist graphite-sillimanite schist outcrops and two temporally distinct 
 
4 
 
 Higgins and others (1988) 
 
Clarkston Formation 
Barrow Hill Formation 
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I Zebulon 
Formation 
VI 
 
Pine Mountain Group 
 
Manchester Schist 
I Hollis Quartzite 
 
Sears and others (1981) 
 
Clark (1952) Hewett and Crickmay (1937) 
 
? Not Available 
Manchester Schist 
I Hollis 
Quartzite 
 
Carolina Gneiss 
Manchester Formation 
I Hollis Quartzite 
 
This Study 
 
graphite sillimanite 
Schist 
 
Gondite 
 
porphy 
 
migmatized Gneiss 
 
kyanite and garnet Schist 
Quartzite 
 
Wacoochee Complex 
 
Sparks Schist 
Woodland Gneiss 
 
Sparks Schist 
Woodland Gneiss 
 
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I Woodland Gneiss 
 
garnetiferous 
biotite Gneiss 
 
Note: Relative stratigraphic thickness is approximate. 
 
Figure 3. Regional stratigraphic correlation of lithologies mapped on the Barnesville Quadrangle. 
 
 generations were noted. 1be ftrst occurs as small lenses concordant to foliation and probably formed as "sweat-out" veins during prograde metamorphism. 1bese veins have subsequently been deformed creating "S", "Z", and "M" type folds, and local boudins. 1besecond type ofquartz vein is temporally later and occurs as large, cross-cutting irregular masses. 
Towaliga Fault Zone 
Augen gneiss 1beheterogeneouseffectsofshearingarebestdisplayedin the gneiss and gneissic schist in the Towaliga Fault Zone. Sheared biotite-quartz-feldspar gneiss garnet muscovite is primarily characterized by the presence of augened feldspar ranging from 0.05- to 3-cm long and ribboned lenses of interstitial quartz. These features are highlighted by numerous thin biotite laminae which anastomose and deflect around the feldspar and quartz producing a well layered, anisotropic/ mylonitic fabric. Garnet, when present, is typically concentrated in the more biotite-rich laminae. Muscovite is locally present in variable amounts. Feldspar porphyroblasts are commonly observed aligned along foliation and probably represent a stretching lineation associated with shearing. The augen gneiss grades laterally (east and west) into zones ofmoderate to pervasive silicification that usually occur as very resistant blocky, porphyroblastic (feldspar clasts >5 to 10 mm) gneiss with abundant associated quartz veins. The resistant nature of this unit is expressed topographically by relatively steep ridges and isolated knolls. Unlike the augen gneiss, the silicified gneiss is not well layered and contains a lower volumetric abundance of mica (both biotite and muscovite). Lensoidal shaped zones of cataclasites (possibly microbreccia, although no petrographic analysis has been performed), with abrupt contacts, occur within the silicified gneiss and augen gneiss. These wnes have been previously referred to, in a general sense, as flinty crush rock (FCR) by various workers in the southeast These lenses trend northeast to southwest, roughly paralleling the orientation of the Towaliga Fault Zone, and range in size from discreet laminae within the gneiss to extensive, mappable units. 1be cataclasites are characterized as very fme-grained to microcrystalline, massive, white quartz  feldspar muscovite with an associated welldeveloped shear foliation. 1be occurrence of a unit characterized by medium- to coarse-grained, rounded feldspar porphyroclasts set in a black, aphanitic matrix of rock flour (probably quartz , feldspar, and mica) was also observed interlayered with the augen gneiss. This unit texturally represents a blastomylonite and/or ultramylonite (Sibson, 1977) and indicates that this portion of the Towaliga FaultZone has undergone more intensecataclasis than the surrounding units. 
Schistose gneiss A sequence of intercalated schist, schistose gneiss, and augen gneiss occurs along the east-central margin of the Barnesville quadrangle within the Towaliga Fault Zone. The schist is characterized as a medium-grained, well foliated feldspar- 
 
quartz-muscovite schist garnet biotite chlorite kyanite. This unit weathers silvery pinkish-red to greenish-gray, is fissile to slabby, and is locally porous due to degradation of feldspar. Granulated kyanite-bearing quartz veins occur locally in the schist These veins are variable in thickness, contain scarce submetallic sheet-like hematite and have a boxwork texture formed from the decomposition of feldspar. Local pegmatitic quartz-feldspar lenses were observed, and are concordant to the dominant foliation. Effects of ductile deformation are indicated by the development of shear fabrics such as "micaftsh",quartzribbons,andbuttonschist(ListerandSnoke, 1984). Laterally, thisschistgradesinto biotite-feldspar-quartzmuscovite schist  kyanite, into feldspar-quartz-muscovitebiotite schist with pegmatitic lenses, and into sheared quartzfeldspar-biotite gneiss muscovite. 1be schists and gneisses are similar mineralogically but vary texturally in that the schist is moderate to well foliated and displays numerous shear fabrics. An attempt was made to map the sheared gneissic schist separately from the sheared augen gneiss on Plate 1. However, these contacts are very imprecise due to their extremely transitional nature. 
South of the Towaliga Fault Zone 
Interlayered QuartzUe and Schist A narrow zone of quartzite traverses, east to west, across the entire quadrangle near the southern margin of the Towaliga Fault Zone. This unit is characterized as a medium-grained, granular, micaceous-feldspathic quartzite. Medium- to coarsegrained muscovite generally defmes a moderately-well developed foliation, with the schistose layers averaging >0.25 mm thick and the granular quartz layers averaging 0.5 to 1 mm thick. The quartz layers are commonly ribboned and coarse-grained mica fish are locally developed. Magnetite occurs in variable abundances as an accessory mineral. Garnet was observed in mica-rich layers in a few places The quartzite weathers tannish to orangish-white, is usually well jointed, flaggy to blocky (depending on muscovite content), and becomes porous and friable as the feldspar weathers and leaches away. This unit is usually very resistant to erosion and typically is expressed as a topographic ridge. Several 6 mm to 10 em thick lenses of porous, highly concentrated zones of iron oxide are located concordant and discordant to foliation and along some joint surfaces. These lenses commonly contain muscovite and quartz. 1be quartzite ranges in outcrop width, from 30 to 275 meters. Thinner portions are generally characterized by a mylonitic texture. The pinch and swell appearance in map pattern is most likely due to tectonic attenuation, although it could, in part, also represent original difference in depositional thickness. On the eastern edge of the quadrangle, the quartzite unit becomes more heterogeneous, alternating with a garnetiferous quartz-muscovite schist  feldspar. These schistose interlayers vary from 1 em to 5 meters thick on outcrop scale, andup to 200 meters thickon aregional scale. 1besmaller scale micaceous interlayers weather dark('l' and are slightly less resistant than the quartzite, giving the unit a stripped look. 
 
6 
 
 Additionally, these layers act as marker "beds" within the quartzite and prove useful in delineating structures. The larger scale schistose interlayers (50 to 200 meters) are characterized as medium- to coarse-grained, well foliated, garnet-quartzmuscovite schist feldspar with local platy graphite. This unit weathers purplish-red to yellowish-orange, is preferentially oxidized along foliation, and has a black Fe-Mn oxide staining coplanar to foliation and along joint surfaces. 
Two continuous units of variably sheared quartzite crop out north of the main quartzite sequence within the Towaliga Fault Zone. Locally, these limbs are mineralogically and texturally indistinguishable from the larger quartzite unit The southern-most of these two thinner units grades laterally from sheared quartzite to mylonitic quartzite and, locally cataclasite, showing a wide variation in development of tectonic flow structure. These units are very resistant to weathering, probably due to localized secondary silicification associated with shearing. They are commonly expressed as ridges but are often well exposed in creek beds. The units have been relatively unaffected by weathering andgenerallycropoutas fresh, unoxidized rock. 
These two thin quartzite units enclose abody ofaluminous schist The schistis characterized as a medium- to very coarsegrained, modemtely layered kyanite-garnet-quartz-muscovite schist feldspar. Kyanite generally occurs in heterogeneously concentrated layers within the schist and probably represents zones originally rich in alumina. The kyanite is characterized as elongate, bluish-green blades and the garnet and kyanite are variable in grain size, ranging from 1 mm to 2 em, and 5 mm to 1.5 em, respectively. Shear fabrics noted in this unit include quartz ribbons, mica fish, and a stretching mineral lineation defmed by kyanite. The kyanite-garnet schist weathers purplish-red to yellowish-red and is modemtely-well exposed along Big Towaliga Creek between the two enclosing units of thin quartzite. This schist unit differs from the garnetiferous schist that is interlayered in the main quartzite sequence only by the presence ofkyanite. Because kyanite is so heterogeneously developed in the kyanite-garnet schist, the garnetiferous schist may be the same unit but without the alumina-rich zones developed to the same extent as in the kyanite-garnet schist 
Gametiferous Biotite Gneiss A fairly heterogeneous sequence of granitic gneiss with pegmatitic lenses and schistose interlayers exists in the southem half of the Barnesville quadrangle. Mineralogically, this unit is very similar to the porphyroblastic gneiss north of the Towaliga Fault Zone; however, it is texturally distinct The gneiss south of the Towaliga Fault Zone is charocterized as a medium- to coarse-grained,well-layeredgarnet-biotite-quartzfeldspar gneiss muscovite pyrite. The well layered appearance of this gneiss is attributed to the thorough development of segregation banding between the leucosomes and melanosomes. Garnet and biotite occur both as disseminated grains in 
1 
the quartz-feldspar leucosomes and in concentrated aggregates or clots that form a lineation in the plane of foliation. The gametiferous biotite gneiss is generally more micaceous (both biotite and muscovite) than the porphyroblastic gneiss north of 
 
the Towaliga Fault Zone. Because ofthe mica enrichment and segregation, the saprolite is well preserved compared to the saprolite observed in the porphyroblastic gneiss. Lens-shaped quartz-feldsparpegmatites within the gametiferous biotite gneiss have 0.5 to 2 em biotitic haloes, probably reflecting effects of metamorphic segregation. The gneiss weathers orangish-red to dark red with scattered Fe-Mn oxide-enriched biotite clots that probably represent remnant garnet-biotite aggregates. This unit crops out as planar slabs and blocks, but is most commonly observed as saprolitic soil. 
Near the garnetiferous biotite gneiss-quartzite contact, a transitional zone occurs, grading from thinly laminated garnetiferous biotite gneiss to augened garnetiferous biotite gneiss to sheared biotite-feldspar-quartz-muscovite schist to quartzite. This transition is observed over roughly 30 meters and occurs discontinuously but persistently along the southern and northem margins of the main quartzite body. 
When the garnetiferous biotite gneiss does not grade transitionallyinto a shearedschistdirectly south ofthe quartzite contact, it occurs as an intensely sheared unit that is deeply weathered. This weathering characteristic is probably a function ofthe greater susceptibilityofgneiss to weathering than the quartzite due to a greater abundance of feldspar in the gneiss. The gneiss and schist in this transition zone are very similar to that described within the Towaliga Fault Zone and may represent the same stratigraphic unit, or may have endured similar physical processes as the sheared gneissic schist and the augen gneiss. 
Cataclasile Several interlayers ofcataclasite (sometimes referred to as flinty crush rock) occur within the garnetiferous biotite gneiss. These units are white, very fine-grained to microcrystalline, have a well-developed shear foliation and are locally brecciated as evidenced by open-space veins filled with coarse (<5 em long), inward -projecting quartz crystals. Locally, these veins are not completely infilled with quartz crystals and partial permeability in the vein is preserved. These brittle features were also observed in local portions of cataclasites in the TowaligaFaultZone. The interlayers ofcataclasite occur up to 3.5 km south of the Towaliga Fault Zone but were not observed north of the Towaliga Fault Zone. 
STRATIGRAPHIC CORRELATION 
An attempt to correlate lithologic units of the Barnesville quadrangle with the Piedmont stratigraphy is important because of the potential to indicate the amount of relative movement experienced along the TowaligaFaultZone in the Barnesville area and to correlate age and tectonic relations determined elsewhere in the region. Terminology of previous workers together with that of the present study is summarized in Figure 3 The garnetiferous biotite gneiss south of the Towaliga Fault Zone is generally believed to represent the Grenvillian basementandisreferred to as the Woodlandgneissofthe Wacoochee Complex by Bentley and Neathery (1970). Hewett and Crickmay's (1937) description of the Sparks schist correlates 
 
7 
 
 with that of the sheared gneissic schist and the transitionally adjacent augen gneiss. Bentley and Neathery (1970) and Higgins and others (1988) included this unit in the Wacoochee Complex; however, Sears and others (1981) have included the Sparlcs Schist in the Pine Mountain Group. The thick quartzite and the two thinner units correlate with the Hollis quartzite, which is considered to stratigraphically overlie the Sparks Schist (Hewett and Crickmay, 1937). The kyanite-garnet schist and garnetiferous schist are probably equivalent to the lowermost member of the Manchester Schist as described by Clarke (1952). The Hollis quartzite and the Manchester Schist are interpreted as belonging to the Pine Mountain Group (Bentley and Neathery, 1970). The porphyroblastic gneiss north of the TowaligaFaultZone represents theZebulon Formation and the gondite and graphite-sillimanite schist belong to the Barrow Hill and Clarkston Formations, respectively (Higgins and others, 1988). 
STRUCTURE 
Orientation of compositional and structural anisotropies (i.e., foliation, lineations, fold axes, faults,) are ofgreat importance in controlling fracture behavior. These features will be discussed in this section. Joint openings frequently provide one of the most efficient interconnected pathways for ground water flow. The joint sets measured and described during this investigation and their relationship to structural features will be discussed in a separate section. 
Early Folds and Faults 
The schist. gneiss, and amphibolite north and south of the Towaliga Fault Zone have endured a polydeformational history. Theserocks have a penetrative schistosity (S 1),expressed primarily as the alignment and concentration of biotite and/or 
muscovite in the gneiss and muscovite  sillimanite in the 
quartzite and schist S1 is generally observed parallel with layering that is believed to represent the original compositional layering (So). The intensity of S1 foliation is variable, being more intensein the schistandquartzite than in the gneissic units. A summary plot of measured regional foliation orientations is given in Figure4. The calculated mean foliation (S 1) is N81 E, 51 o NW. A lineation (L1) observed in units north and south of the Towaliga Fault Zone is a nonpenetrative mineral lineation defined by the preferential alignment of feldspar and biotite along S1 planes. This lineation trends N52E, 2040SW and is consistent with that recognized by Grant (1967). 
Tight to isoclinal style folding (Fl) associated with axial planar S1and L1, is locally observed in all rock types north and south of the TowaligaFault Zone. These fold sets trend WNW to ENE (averaging N84E), have a shallow plunge (5-20) to the southwest and axial planes dip to the north 10-35 degrees. The best exposures of the tight sequence ofisoclinal folding is in the Hollis quartzite where the schistose interlayers provide excellent marka- beds. Additionally, variability offoliation in the garnetiferous biotite gneiss indicates a series of tight folds throughout the southern half of the quadrangle. 
 
Effectsofprobable thrustfaulting associated with isoclinal folding wa-e also observed A thrust contact has been interpreted between the porphyroblastic gneiss and gondite/graphite-sillimanite schist sequence by Higgins and Atkins (unpublished mapping). A narrow (2 to 3 em) layer of oxidized clay occurs at the contact between an abrupt change in lithology (gneiss andgondite/schist) and a change in the average foliation (Sl) orientation to N65E. This zone may represent the plane of movement Given the juxtaposition of two different lithologic units that are not in their normal stratigraphic sequence, the possible clay-filled fault zone, and the abrupt change in structural attitude, the interpretation of a thrust contact seems reasonable. 
The two thin units of quartzite and interlayered kyanitegarnet schist are tentatively interpreted as an imbricate thrust slice off the main Hollis quartzite. The average foliation orientation in the northern-most thin quartzite unit changes from N80E to N60"E in the last 3.5 km before its northeastern termination. This change is consistent with a change observed in the trend of the Towaliga fault As indicated on Plate 1, the sequence of the thin quartzite units and interlayered kyanitegarnet schist and the main section of Hollis are all enclosed within the same unit (augen gneiss). These thin quartzite units have previously been interpreted as discontinuous cataclastic and mylonitic zones created during movement along the Towaliga Fault Zone and were not believed to be related to the Hollis quartzite (Hewett and Crickmay, 1937; Grant, 1967; Higgins and Atkins, unpublished mapping). This is a viable interpretation; however, by considering that: I) locally, the units are indistinguishable mineralogically and texturally from the main Hollis quartzite and associated Manchester Formation, 2) the units grade laterally into cataclasites which are commonly associated with thrust faults; and 3) repetition ofthe lithologic sequence is indicated; the interpretation that the quartzite-schist sequence represents an imbricate thrust off of the Hollis is well supported. Alternative interpretations including effects of repetition by folding have also been considered. The repetition of the lithologic sequence could have been produced during the Fl isoclinal event Unlike the main body of quartzite, mesoscopic folding is not indicated in the thin quartzite units in outcrop. However, effects of thrust faulting are indicated at outcrop scale in the surrounding gneiss and schist; therefore, repetition of units by imbricate thrusts is currently the favored interpretation. 
A second generation of broad, open-style folding (F2) gently warps the isoclinal folds, locally. This event was not penetrative, however, as the SO/S 1 layers appear to be unaffected (i.e., no associated S2 is recognized). 
Towaliga Fault Zone 
The Towaliga Fault Zone, which is interpreted to be younger than the regional foliation (SO/S1), is oriented N60 to 70E, 50-70 NW. The fault woe is characterized by a variably exposed width of ductile deformation ranging from 1 to 3 km on the Barnesville quadrangle. The fault wne is also characterized by a prominent stretching mineral lineation (1.2) 
 
8 
 
 trending N25W, and plunging 49 to the northwest and is conSistent with that documented by Grant (1967). This stretching lineation was probably developed in response to dip-slip movement along the Towaliga Fault Zone. Figures 5 and 6 are sumrnaryplotsofallfoliationmeastD'elllents within theTowaliga Fault Zone and the one-mile radius around the research site, respectively. Thedistributionofpolesonfigure's4,5,and6are very similar, indicating that the orientation of shear-induced foliation (S2) is so similar to regional foliation that it is indistinguishable from S1 on a composite plot. 
Alater,brittle stageofmovementalong the TowaligaFault is locallydepicted inazoneofoffsetwhere the shearednorthern thinquartziteunitisjuxtaposedagainstthegarnetiferousquartzmuscovite schistwith a narrow zone offault gouge dividing the two units. The attitude of this fault is N70E, 80NW and parallels that of the Towaliga Fault 
The northern margin of the Towaliga Fault Zone, charncterized by augen gneiss, mylonitic schist, and local cataclasite, has a relatively abrupt contact with adjacent rock units. Augen gneiss, mylonitic schist and quartzite, and cataclasite also characterize the southern margin of the Towaliga Fault Zone, but narrow zones of high strain subparallel to the main zone occur sporadically up to 3.5 km south of the margin. This is indicated by the occurrence ofdiscontinuous cataclastic lenses and interlayers of mylonitic schist in the garnetiferous biotite gneiss. These lenses and interlayers maintain a similar shear foliation orientation (N65E) as that observed in the Towaliga FaultZone. These shearfeatures indicate thatductile and brittle 
 
movement occurred within and south of the Towaliga Fault Zone; subsequently, these units were juxtaposed against the relatively unsheared units north of the Towaliga Fault Zone. The central portion of the Towaliga Fault Zone consists of extensive cataclasites, brecciated cataclastics, augen gneiss, mylonitic gneissic schist and quartzite, and ultramylonitic gneiss. 
Shear zones are typically very heterogeneous internally. Structural discontinuities tend to intersect at acute angles producing an anastamosing anay ofshears that envelope zones of lower strain (Bursnell, 1989). Effects of shearing are heterogeneously distributed throughout the Towaliga Fault Zone. This is indicated most clearly around the sheared gneissic schist units and in the drill core from the hydrogeologic research site. The sheared gneissic schist has been observed to occur within the augen gneiss and locally along the quartziteaugen gneiss and quartzite-garnetiferous biotite gneiss contacts. A fainter foliation plane occurs in the sheared gneissic schistand its combination with S1probably promoteddevelopment of the button schist fabric within the sheared gneissic schist This foliation (S2?) was not developed well enough, however, to obtain a reliable measurement As mentioned in the lithologic descriptions, the sheared gneissic schist and augen gneiss are very transitional units, possibly originating from the same protolith. It is conceivable that during shearing and accompanying fluid infiltration of a gneissic unit, feldspar content would decrease and muscovite content would increase due to crystallization from breakdown of feldspar. Addition- 
 
Ill 
 
SCHttiDT POLE CortCEttTRATIOHS 
 
i: of" total per 
 
1.0 S area 
 
c: 0 
 
:II 
 
c: 2 
c: ... 
 
* 
:a 
 
c: 6 
 
'lK 
 
'lK 
 
c: 10 
 
ill 
 
c: 12 
 
ll!: 
 
!<IJ 
 
-E 
 
c: 1"1 
 
* 
 
LNFL HEtti SPHERE 
 
2"18 
 
POLES 
 
2-48 ENTRIES 
 
NO BIAS CORRECTION 
 
""';;;>~ 
 
FIGURE 4. Contoured, lower hemisphere, equal-area stereoplot of 
 
248 poles to foliation outside the Towaliga Fault Zone. The solid 
 
black area represents the maxima and indicates that 12% to 14 % 
 
of the data occur in an area equal to one percent of the total area 
 
of the diagram. The calculated mean regional foliation is N81 E, 
 
51NW. 
 
9 
 
 SCHHIDT POLE 
:CIIOoNrCEtNoTtR.-A1TIOpNaSr 
.. 1.0 ill area c: 0 
 
c: 2 
 
lt 
 
< "" 
 
Ill 
 
<! 6 
 
:II 
 
c: a 
 
Ill 
 
< 10 
 
Ill 
 
< 12 
 
:II 
 
< 1"" 
 
:II 
 
LWFI. HEMISPHERE 
 
167 
 
POLES 
 
167 ENTRIES 
 
NO BIAS CORRECTION 
 
FIGURE 5. Contoured, lower hemisphere, equal-area stereoplot of 167 poles to foliation within the Towaliga Fault Zone. The calculated mean foliation within the Towaliga Fault Zone is N77E, 50NW. 
 
SCHHIDT POLE COHCEJ'ITRAT IONS :II of total per 
t.O :II area 
 
< 0 
 
:II 
 
< 2.5 
 
lt 
 
c: 5 
 
t! 
 
< 7.5 
 
:II 
 
< to 
 
:II 
 
< 12.5 21 
 
c: 15 
 
~ 
 
-E 
 
" c: 17.5 
 
LWR. HEHISPHEFE 
 
t""t 
 
POLES 
 
t""t ENTRIES 
 
NO BIAS CORRECTIOH 
 
$ 
FIGURE 6. Contoured, lower hemisphere, equal-area stereoplot of 141 poles to foliation in a one-mile radius around the Barnesville hydro~eologic research site. These data primarily lie within the Towahga Fault Zone. The calculated mean foliat1on within this radius is N78E, 50NW. 
10 
 
 ally, biotite would initially become more highly concentmted, imparting a more schistose fabric to the gneiss, and ultimately the biotite would be depleted due to interaction with shearinduced fluids. The resultant"sheared schist-gneiss" wouldbe mineralogically similar to the original gneiss (with the exception of relative mint'Lal abundance), and texLUrally similar to a sheared schist The sheared gneissic schist may represent portions ofthe augen gneiss l.hat have been sheared to agreater degree, perhaps as a result of anastomosing splays within the TowaligaFaultZone. Alternatively, the sheared gneissic schist may simply represent compositionally discrete intedayers of schist within the gneiss, both of which have undergone intense shearing. 
Heterogeneous effects of shearing in the Towaliga Fault Zone are also observed in diamond drill holes GGS#3637 and GGS#3638. Drill corefrom GGS#3637 represents a 328.5 foot penetration of the augen gneiss. The upper half of this hole consists ofaugened and ribboned gneiss. Below 170 feet, this unit grades into a zone of greater penetmtive deformation as evidenced by the gradual development of a mylonitic flow fabricalongwilhcomminutionofaugenstomicroaugens. Very locally, blastomyJonite is observed and probablyrepresents the advent of movement along the Towaliga Fault Zone (Gnmt, 1967). The bottom portion ofthis hole encountered alternating intervalsofultmmyloniteandcataclasites. DrillholeGGS#3638 is collared in micaceous, mylonitic quartzite and represents the northern-most of the thin quartzite units. This unit is followed by an interval of intense brecciation and veining. The breccia consists ofnwnerous randomly oriented clasts ofschist, quartzite, vein quartz and sillimanite needles. This breccia may represent the area where the southern and northern quartzite limbs merge, as observed in surface exposures. Sixty feet of cataclasite with transitional zones of mylonitic quartzite were encountered below the brecciation, and another zone of brecciation follows the cataclasite. The bottom portion of the hole is characterized by an interval of gradational cataclasite, mylonitic quartzite and mylonitic schist, all containing vein quartz. 
METAMORPIDSM 
The metamorphic mineral assemblages obSt'LVed north of the TowaligaFaultZone appear to vary with bulk composition. The graphite-sillimanite schist is characterized by graphite + sillimanite + garnet + muscovite + feldspar + quartz biotite; whereas, the gneiss contains biotite+ feldspar+ quartz. During this field investigation, garnet has not been observed as part of the metamorphic assemblage in the gneiss; however, Grant (1967) reported the rare occurrence of garnet in this unit Although no geothermometry has been obtained, based on mineral assemblages, the metamorphic signature in this area is characterized as sillimanite zone ofthe almandine-amphibolite facies (Mason, 1978). 
The metamorphic mineral assemblages observed within and south ofthe TowaligaFaultZone differ from those north of the Towaliga Fault Zone by the occurrence of kyanite in the schist and abundant garnet in the gneiss. The kyanite-gamet 
 
schist, gametiferous schist, and sheared gneissic schist are characterized by muscovite + feldspar + quartz + kyanite + garnet biotite and the augen gneiss and gametiferous biotite 
gneiss are characlerized by garnet+ muscovite + biotite + 
quartz + feldspar:. Quantitative data are not available for geothermometiy based on garnet-biotite equilibrium pairs; therefore, qualitatively, this area is preswned to have achieved staurolite to kyanite-grade metamorphism( Mason, 1978). 
HYDROGEOLOGY 
426 foliation and 519 joint measurements were taken during the geologic mapping segment of this investigation 
(Plates 1and 2). Before gathering joint data. each outcrop was 
visually assessed to identify the most prominentjointsets. This qualitative method offiltering data could have been perfonned quantitatively and statistically by measuring all joints present and plotting them on appropriate structural diagrams for each outcrop. This approach has previously been taken by various consulting finns in the region; however, the results are essentially the same as those acquired from the qualitative method and the quantitative method takes significantly longer. 
Structural data collected at each outcrop includes orientation of foliation and/or compositional layering, joint sets, lithologic contacts, veins, folds, and faults. Additional characteristics ofpotentialhydrogeologic significance, such as degree and depth ofweathering, and spacing, persistence, and dilation of joint sets were recorded for the structural discontinuities where applicable. Lithologic features such as mineralogy also have a hydrogeologic impact and are discussed in the Lithologic Descriptions portion of this repon. These structural and lithologic data are presented in Appendix I. 
A variety of methods are used to compare structural data; the most effective are stereonets and rose diagrams. These types of graphical representation enable quick assimilation of data and allow directcomparison ofstructural trends. Although there is significant scatterin the data, a few generalizations can be made for prominent joint orientations related to different lithologies and different geographic locations, relative to the Towaliga Fault Zone. 
Joint set data are categorized by two criteria: 1) lithology, and 2) relation to the .Towaliga Fault Zone (i.e., south, within, and north of the Towaliga Fault Zone). Dominant joint orientations are indicated in seven of the ten lithologies described. Eighty-five percentofthe lithologies display a broad northwest joint set with a strong north-northwest subset This orientation is generally perpendicular to the regional foliation (Sl). Another weaker joint set oriented roughly northeast occurs in 70% of the lithologies. This orientation is generally parallel to S1. Two minor, north-south and east-west sets are also observed in 70% of the lithologic units. Many of these joints are vertical; however, some depart up to 30 from this attitude. These four 
dominant joint sets are commonly observed in crystalline rocks 
throughout the Georgia Piedmont (Crawford, T., pt'L. comm., 1991). 
Joint orientations were also arranged by geographic position relative to the Towaliga Fault Zone (Plate 2). North of the 
 
11 
 
 SCH"IDl' POLE CONCEttTRATIOHS :15 of total per 
1 , 0 21 area 
 
< 0 
 
lis 
 
< 1 
 
"' 
 
c 2 
 
:II 
 
c 3 
 
:II 
 
c "" 
 
'!I!; 
 
< 5 
 
115 
 
c: 6 
 
:15 
 
E 
 
c 7 
 
:15 
 
LWR. HEMISPHERE 
 
331 
 
POLES 
 
331 ENTRIES 
 
NO BIAS CORRECTION 
 
FIGURE 7. Contoured, lower hemisphere, equal-area stereoplot of 330 poles to joint surfaces outside the Towaliga Fault Zone. The most prominent joint set has a broad, northwest orientation with a strong north-northwest subset. Minor areas of 3-4% mark subsidiary sefs of joints orientated northeast and east-west. The symmetrical placing of the maxima near the perimeter indicate that the joints are 
commonly near vertical. 
 
J!l 
 
SCII~IDT POLE COHC NTR~TlONS 
 
:15 of' total per 
 
1.0 \II .ar ea 
 
c: 0 
 
s 
 
c 1.5 
 
~ 
 
< 3 
 
:.t 
 
:t 
 
s 
 
< 7.5 
 
z 
 
c 8 
 
z 
 
~! 
 
E 
 
< 10 . 5 :1; 
 
LWR  HEI'II SPHERE 
 
175 
 
POLES 
 
175 ENTRIES 
 
NO BIAS CORRECTION 
 
FIGURE 8. Contoured, lower hemisphere, equal-area stereoplot of 175 poles to joint surfaces within the Towaliga Fault Zone. The dominant joint sets within the Towaliga Fault Zone are oriented north-south. Minor northeast and east-west oriented sets are indicated by the 3-4.5 % area. 
12 
 
 Towaliga Fault Zone, joint sets have a prominent broad northwesterly orientation with anorth-northwestsubsetanda weaker northeastezly orientation (Fig. 7). Near the margin and within the Towaliga Fault Zone, the dominant joint set is roughly north-south to north northeast (Fig. 8). This set may represent fracturing in response to latent stresses associated with dip-slip movement along the Towaliga as it is oriented parallel to the stretching lineation (L2) observed during this investigation and noted by Grant (1967). Other joint sets in the Towaliga Fault Zone include the east-west orientation and a weaker northeasterly and northwesterly alignment (Fig. 8). Joint orientations sorted for an area within a one mile radius ofthe hydrogeologic research site within the Towaliga Fault Zone display strongly shear-controlled fabrics. The two dominant joint sets include a north-south and a northeast set (Fig. 9). The northeast orientation is only observed as a dominant joint set within the one-mile radius. These two sets probably represent fracturing in response to latent stresses associated with dip-slip (L2) and strike-slip (S2) movement along the Towaliga Fault Zone, reSpectively. 
South of the Towaliga Fault Zone, the dominant joint sets are analogous to those observed north of the Towaliga Fault Zone, and are characterized by a prominent broad northwesterly and weaker northeasterly, and east-west orientations (Fig. 7). The symmetricalplacingofthe maxima on theperimeteron Figure's 7, 8, and 9, indicates that the joints, though somewhat variable, are statistically near vertical. 
Gorday (1989) performed a rectilinear stream analysis of 
 
LamarCounty inconjunction with ahydrogeologic studyofthe area. Gorday observed three dominant directions of streamsegment alignment These regional stream-segment orientations parallel three ofthe four jointsets commonly observed on the Barnesville quadrangle, indicating a structurally controlled drainage pattern. On a quadrangle and smaller scale, the relationship of stream-segmentalignmentand planar weakness varies in different rock types. Commonly, streams occur bisecting intersections ofplanar features (i.e., two joint sets, or one joint set and foliation) in quartzite and biotite gneiss; whereas, in schistose units, streams tend to occur parallel to planar weaknesses. Although this observation is empirical, the relationship may bear potential hydrologic significance. 
Generalizations concerning frequency and abundance of fracturing for a given lithologic unit or geographic position are more difficult to make. These types of generalizations may be biased by the amount ofexposure and degree of weathering as well as a response to a particular rock type or the stress field of a specific area. Thegreatestfrequency ofoutcrops occurs in the sheared gneissic schist, augen gneiss, cataclasite and quartzite. All ofthese units occur within oradjacent to the TowaligaFault Zone and have the greatest concentration of penetrative joint sets. These observations could indicate the following: I) the abundance of well-developed joint sets in this band of rocks within the Towaliga Fault Zone does not necessarily indicate that these rock types were more amenable to fracturing than otheJ" lithologic units south and north of the Towaliga Fault Zone. The units appear more resistant to weathering, possibly 
 
SCHI'IIDT POLE CONCENTRATIONS ~ of' total per 
t.O ~area 
 
< 0 
 
~ 
 
< 1.5 
 
::Ill 
 
< 3 
 
::Ill 
 
< "1.5 
 
:II 
 
< 8 
 
:II 
 
< 7.5 
 
'I! 
 
< 9 
 
::Ill 
 
.E 
 
< 10.5 ~ 
 
UIR . HEtti SPHERE 
 
153 
 
POLES 
 
153 ENTRIES 
 
HO BIAS CORRECTION 
 
FIGURE 9. Contoured, lower hemisphere, equal-area stereoplot of 153 poles to joint surfaces within a one-mile radius around the Barnesville hydrogeologic research site. The dominant joint set is oriented north-south and is similar to that observed within the Towaliga Fault Zone. A strong northeast orientation is also indicated and is unique to the area. 
13 
 
 due to partial silicification, thus jointing is more evident than in contrasting rheology are adjacent to one another. 
 
deeply weathered outcrops. For example, the porphyroblastic 
 
2. A penetrative regional schistosity is expressed through- 
 
gneiss does not have a high occurrence of outcrop, but when out the field area (S 1: N81E, 51NW) and is generally devel- 
 
exposed. this unit is usually fairly well fractured 2) Because oped parallel to compositional layering. This regional foliation 
 
these rock types are more resistant, they react brittlely to latent is locally variable and is associated with effects of isoclinal 
 
stress fields; consequently,they are moresusceptibleto second- folding and thrust faulting. Isoclinal folds trend WNW to ENE 
 
ary fracturing. This bandofrocks traverses westto eastthrough {averaging N84E) and plunge gently ranging from 5 to 20 
 
the center of the one mile radius around the hydrogeologic degrees. A regional mineral lineation (Ll) observed by Grant 
 
research site. Even though the frequency and abundance of (1967) and during this investigation, is axial planar with the 
 
joint sets appears to be greater in this area, determination of isoclinal folds. 
 
whether or not this is a function of the units' proximity to the 
 
3. TheTowaligaFaultZoneisanareaofmajordistributive 
 
TowaligaFaultZone is difficult to make. However, because of movement, extending from eastern Alabama through central 
 
the inherent heterogeneous distribution of rock types and Georgia. This zone is interpreted to be younger than the 
 
silicification in the one-mile radius, this area would intuitively regional foliation and strikes N60-700E across the central 
 
seem to be favorable for a higher concentrationofjointing. This portion of the Barnesville quadrangle. The Towaliga Fault 
 
high frequency ofjointing is probably responsible for the high Zone dips 50 to 70 degrees to the north, and has a variably 
 
yield well at the research site. 
 
exposed width ofl to 3km. A stretching mineral lineation (L2) 
 
The scatter in joint orientation data may be related to trending N25E, 49NE is consistent with that observed by 
 
locally different inherent variations in the rock fabrics. Despite Grant (1967) and is probably associated with dip slip move- 
 
effects of polydeformational events, regional foliation (S 1) is ment along the Towaliga fault 
 
generally planar; however, the attitude of foliation does vary. 
 
4. Heterogeneous effects ofshearingoflithologic units are 
 
Many joint sets appear to have formed in response to the manifested by texture and mineralogy. Texturally, select 
 
foliation orientation; therefore, wide variation in joint set portions of the quartzite, kyanite-gametschistand augen gneiss 
 
orientation may be a function of variations in foliation dip and have been mylonitized to various degrees, and cataclasized. 
 
dip direction. Therefore, a slight change in one foliation Effects of late brecciation and subsequent partial to complete 
 
orientation may moderately affect three or four joint orienta- infilling by inwardly projecting quartz crystals are seen in the 
 
tions. When joints measured from a larger geographic area are quartzite and augen gneiss. Locally, these breccia zones are 
 
combined, more scatter is introduced due to the larger statistical associated with cataclasites, but are more commonly observed 
 
variation in foliation; consequently, generalizations made on a in mylonitic quartzite. Mineralogically, alterations due to 
 
large scale may not be applicable to the outcrop scale. Given shearing include the crystallization of muscovite from feldspar 
 
this understanding, it is fairly swprising that even weak gener- in the shearedgneissic schistand augen gneiss, and local partial 
 
alizations can be made at this scale. This does not, however, to pervasive silicification of the augen gneiss, quartzite, and 
 
preclude the attempt to model effects of different geologic cataclasite. 
 
systems with hydrologic characteristics. To develop a predic- 
 
5. Lithologic units north of the Towaliga Fault Zone 
 
tive model to effectively locate high yield wells, comprehen- appear to have achieved sillimanite-grade metamorphism. In 
 
sivegeologic characterization ofan area mustbe systematically contrast, lithologic units within and south ofthe TowaligaFault 
 
compared and correlated to hydrologic data from the immedi- Zone appear to have achieved kyanite-grade metamorphism. 
 
ate area. Additionally, stronger correlations and consequently 
 
6. Because of the great variability of rock types, it is 
 
more useful information can beobtainedon a smaller, more site difficult to characterize the depth of weatheruig for each 
 
specific scale, where the variation of interaction between lithologic unit However, in a general sense, the unsheared 
 
foliation and joint development is minimized. 
 
gneissic units (porphyroblastic gneiss and gametiferous biotite 
 
gneiss) are more deeply weathered than the schist (quartz- 
 
CONCLUSIONS 
 
muscovite schist, gametiferous schist, kyanite-garnet schist), 
 
and the schist is more deeply weathered than the quartzite. The 
 
1. Eleven lithologies were mapped on the Barnesville massive central portion of the quartzite is much more resistant 
 
quadrangle: graphite-sillimanite schist, gondite, quartz-mus- than the flanks where the quartzite becomes interlayered with 
 
covite schist, porphyroblastic gneiss, sheared gneissic schist, schist The sheared gneissic schist is generally more resistant 
 
augen gneiss, cataclasite, kyanite-garnet schist, gametiferous to weathering than the augen gneiss (depending on amount of 
 
schist, quartzite, gametiferous biotite gneiss. Seven of these silicification) and less resistant than the quartzite. The only 
 
lithologies were mapped in detail within aone mile radius ofthe rock units that appear to be ubiquitously competent are the 
 
Barnesville hydrogeologic research site: porphyroblastic gneiss, silicified cataclastic lenses where intense granulation has di- 
 
augen gneiss, sheared gneissic schist, cataclasite, quartzite, minished grain size to a microscopic scale. This reduction in 
 
kyanite-gamet schist, garnetiferous biotite gneiss. Four of grain size has taken place under high pressure conditions; 
 
these lithologies were encountered in the two core holes: therefore, therock remains highly competentand is notreduced 
 
sheared gneissic schist, quartzite, augen gneiss, cataclasite. All to a fine powder. 
 
units have highly variable weathering characteristics. This 
 
7. 519 joint measurements were taken throughout the area. 
 
differential weathering is particularlyevident when two units of Fourdistinct orientations are dominant amidst abundant scatter 
 
14 
 
 of data: northwest with a north-northwest subset, north-south, east-west, and northeast The northwest, east-west and northeastsetsappear to be slightly morepervasive north and south of the Towaliga Fault Zone, and the north-south set appears to be more pervasive within the Towaliga Fault Zone. Three of the four dominant joint orientations are paralleled by dominant drainagepatterns in LamarCounty. The variabledominance of joint sets is most likely a function of the most influential local 
rock fabric (foliation, lineation, fold axes). These generalizations, however, are probably not reliable on a site specific scale 
and should not be used as a tool for depicting hydrogeologic 
characteristics of a specific area. 
8. Generalization concerningfrequency and abundance of fracturing for a given rock type or geographic location are difficult to make. Thelithologic units within theTowaligaFault Zone ( and the one-mile radius around the research site) apparently have more joint sets developed than in rock types north and south of the Towaliga Fault Zone. This relationship may be a function of abundance of outcrop: rocks within the TowaligaFault Zone are much better exposed than rocks north and south of the Towaliga Fault Zone. Where lithologic units north and south of the fault zone crop out (specifically the porphyroblastic gneiss and garnetiferous biotite gneiss), they generallycontain numerousjointsets; therefore, itis difficult to determine whether occurrence and abundance of jointing is enhanced in shear zones. 
REFERENCES CITED 
 
Grant,W.H., 1967,GeologyoftheBamesvilleareaandTowaliga Fault,LamarCounty,Georgia: GeorgiaGeologic SurveyGuidebook6, 16p. 
Hewett, D.F., and Crickmay, G.W., 1937,The warm springs of Georgia, their geologic relations and origin: U.S. Geological Survey Water Supply Paper 819, 40p. 
Higgins, M.W., 1971, Cataclastic rocks: U.S. Geological Survey Professional Paper 687, 96 p. 
Higgins, M W.,and Atkins, R.L., unpublished geologic map of the Barnesville 7.5 minute USGS quadrangle, Lamar Co., Georgia 
Higgins, M.W., Atkins, RL., Crawford, TJ., Crawford, R.F., Brooks, R., and Cook, R.B., 1988, The structure, stratigraphy, tectonostratigraphy, and evolution of the southernmost part of the Appalachian Orogen: U.S. Geological Survey Professional Paper 1475, 173 p. 
Hooper, RJ., and Hatcher, R.D., 1989, The geology ofthe east end of the Pine Mountain Window and adjacent Piedmont, central Georgia: Geological Society of America Pre-meeting Field Trip Guidebook for Southeastern Section, 35 p. 
Lister, G.S. and Snoke, A.W., 1984, S-C mylonites: Journal of Structural Geology, v. 6, p. 617-638. 
 
Atkins, R. and Lineback, J., 1992, Structural relations, origin andemplacementofgraniticrocksin the CedarRock Complex, Georgia Piedmont: Georgia Geologic Survey Bulletin 115, 40 p. 
Bentley, R.D., and Neathery, T.L., 1970, Geology of the Brevard fault zone and related rocks of the Inner Piedmont of Alabama: Alabama Geologic Society Guidebook for 8th Annual Field Trip, p.32-36. 
Bursnell, J.T., 1989, Review of mechanical principles, deformation mechanisms and shear zone rocks: Geological Association ofCanada Short Course Notes Vol. 6, p. 1-27. 
Clarke, J.W., 1952, Geology and mineral resources of the Thomaston Quadrangle, Georgia: Georgia Geologic Survey Bulletin 59, 103 p. 
Crickmay, G.W., 1952, Geology of the crystalline rocks of Georgia: Georgia Geologic Survey Bulletin 58, 56 p. 
Favilla,LJ., 1985,Agravity surveyofLamarCounty, Georgia: Georgia Geologic Survey Open-File Report 86-3, 33 p. 
 
Mason,R., 1978,Petrologyofthe MetamorphicRocks: George Allen & Unwin. 
Pickering, S.M., Jr., 1976, Geologic Map of Georgia: Atlanta, Georgia Geologic Survey, scale 1 : 500,000. 
Sears, L.W., Cook, R.B., Gilbert, O.E., Carrington, TJ., and Schamel, S., 1981, Stratigraphy and structure of the Pine Mountain Window in Georgia and Alabama: Georgia Geologic Survey Information Circular 54-A, 41-53 p. 
Secor and Snoke, 1986, Character of the Alleghanian orogeny in the Southern Appalachians: Part III Regional tectonic relations: Geological Society of America Bulletin V. 97, p. 13191328. 
Sibson, R.H., 1977, Fault rocks and fault mechanisms: Journal of the Geological Society of London, v.133, p. 191-213. 
Steele,W., Brackett, D., and Kellam, M., and Hall, M., in prep., Hydrogeology of the Barnesville hydrologic research site, Lamar County, Georgia: Georgia Geologic Survey Information Circular 93. 
 
Gorday, L.L., 1989, The hydrogeology of Lamar County, Georgia: Georgia Geologic Survey Information Circular SO, 40 p. 
 
15 
 
 APPENDIX I Foliation and Joint Data 
Appendix I represents the compilation of select structural and lithologic data gathered during the field portion of this investigation. The easting and soothing coordinates for each map station where data were recorded are measured from an arbitrary 0,0 reference point (scale: 1" = 1001located at the northwestern comer of the quadrangle (Plates 1 and 2). The lithologic and structural abbreviations used on this table are listed below. 
Rx Type= rock type Pol = foliation Space= spacing measured between joints Persist = persistence of joints Dilat = relative degree of dilation along joints Weath = weathering characteristics ofjoints D = dilated joint SD = semi-dilated joint Fe, Mn =Fe and Mn oxide staining Bleach = bleached halo around joint KAOL = kaolinite infilling of joint Si01 = quartz infilling of joint Lithologies 
GSS =graphite-sillimanite schist 
QMS = quartz-muscovite schist BQFG = biotite-quartz-feldspar gneiss GQMS = garnetiferous quartz-muscovite schist AMPH = amphibolite 
QGG =quartz-garnet granofels (gondite) Q1E =quartzite 
GBQFG = garnetiferous biotite-quartz-feldspar gneiss SBQFG= shearedan<Vorsilicifiedbiotite-quartz-feldspar gneiss SSG = sheared gneissic schist FCR =flinty crush rock (cataclasite) GKQMS = garnetiferous kyanite-quartz-muscovite schist IP = igneous pegmatite 
16 
 
 Map Sta 
1 
2 
2 3 
4 
5 5 
5 
6 
7 
8 
8 
8 
9 
10 10 10 10 11 11 11 11 12 12 12 12 12 13 13 13 13 13 13 14 15 15 15 15 16 16 16 16 16 17 17 17 18 18 19 19 19 19 19 19 19 19 19 20 20 20 20 21 22 
22 
22 
22 22 22 22 23 
 
Eastlng 
soo 
485 485 
435 
418 
405 
405 
405 
355 
355 
360 
360 
360 
355 395 395 395 395 470 470 470 470 530 
530 530 530 530 570 570 570 570 570 570 650 265 265 265 265 220 220 220 220 220 125 125 125 145 145 275 275 275 275 275 275 275 275 275 
265 
265 
265 265 195 175 175 175 175 
175 175 175 145 
 
Southlng Rx Typ 
60 ass 
 
82 GSS 
 
82 GSS 
 
345 OMS 
 
285 OMS 
 
230 BOFG 
 
230 BOFG 
 
230 BOFG 
 
140 GOMS 
 
110 GSS 
 
55 GSS 
 
55 GSS 
 
55 GSS 
 
20 GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 AMPH 
 
0 BOFG 
 
0 
 
BOFG 
 
0 BOFS 
 
0 OMS 
 
35 BOFG 
 
35 BOFG 
 
35 BOFG 
 
35 BOFG 
 
35 BOFG 
 
35 BOFG 
 
270 BOFG 
 
485 BOFG 
 
485 BOFG 
 
485 BOFG 
 
485 BOFG 
 
510 BOFG 
 
510 BOFG 
 
510 BOFG 
 
510 BOFG 
 
510 BOFG 
 
505 OMS 
 
505 OMS 
 
505 OMS 
 
500 OMS 
 
500 OMS 
 
270 BOFG 
 
270 BOFG 
 
270 BOFG 
 
270 BOFG 
 
270 OMS 
 
270 OMS 
 
270 OMS 
 
270 OMS 
 
270 OMS 
 
255 BOFG 
 
255 BOFG 
 
255 BOFG 
 
255 QGG 
 
190 GSS 
 
160 GSS 
 
160 GSS 
 
160 GSS 
 
160 GSS 
 
160 GSS 
 
160 GSS 
 
160 GSS 
 
125 GSS 
 
Fol Trend 
N69E N64E N84E N25W N21W N38E N50E 
N6W 
N27E N4E 
N85E N34E N19E 
N54E 
N70E 
N44W N60W NSOW N38W N75E 
N58E N72E 
N60W N30E N28E 
N35E N20W 
 
Fol Dip 
39NW 14NW 45SE 14SW 30SW 15NW 30NW 
49SW 
56NW 18NW 
64SE 40NW 17NW 
48NW 
23NW 
15SW 20SW 22SW 18SW 32NW 
10NW 24NW 
10NE 18NW 39NW 
28NW 44SW 
 
FOLD FOLD FOLD FOLD FOLD 
FOLD FOLD 
 
Trend Dip Plunge 
 
NOW 90E 
N42W 85NE N37W 89SW 
NBOW N45W 84NE N72W 71NE N45E 72NW N13W 69NE 
 
BONW 
 
N40W 80SW 
 
N22W 76NE 
 
N65W 
 
26SE 
 
N52W 66NE N37E BBNW N26W 83NE N30E N75W 85SW N10W 56SW N8W N33W BONE N52E N75W 89NE N45E 89NW N15W 89NE N31W BBNE N60E 76SE N45E 13SE N10W 84SW NBOE 66NW N70W 72NE N52W BONE 
 
29SW 
50NW 15NE 
 
N33W 85SW N43W 73SW N12E 66NW N40W 70NE N30W 82NE N52W 81NE N47W 73SW N29W 82NE N12W BONE NBOW 89NE N60W 18SW N72W 66NE N7E 77NW N10W 80SW N75E 32NW N25W 80SW 
N55W eosw 
N75E BONW N61W 81NE N51W 86NE N72E 24NW N10E BONW N85W 32NE N20E 82SE N20E 75SE N5E 75NW N10W 78NE 
 
N73W N85E 73NW N75E 87SE N45W 62SW N19W 89NE N20E N82W 86NE N70E 90W 
 
28SE 24SW 
 
Joints Space Persist Dllat. 
 
Weath. 
 
4" 24-36" D 
 
OPEN 
 
CLOSED 
 
CLOSED 
 
so 
 
Fe 
 
2" 
 
6" 
 
D FE.MN 
 
2-8"' 36-48" 
 
D 
 
OPEN 
 
30" 1.5" 36" 2-6" 24"' 
 
D 
 
D 
 
MN 
 
BLEACH 
 
D 
 
FE 
 
4-8" 
 
6" CLOSED 
 
D 
 
KAOL 
 
D 
 
KAOL 
 
D 
 
KAOL 
 
D OPEN 
 
96" 
 
12"' 
 
6'' 
 
48" 
 
D 
 
OPEN 
 
1" 12"' 
 
D 
 
1"' 12"' so 
 
FE 
 
6' 
 
6'' 
 
D 
 
FE 
 
6" 
 
6" 
 
D 
 
FE 
 
CLOSED 
 
CLOSED 
 
12" 36'' CLOSED 
 
12" 36'' CLOSED 
 
12" 36" 
 
so 
 
FE 
 
CLOSED 
 
D 
 
FE 
 
3"' 
 
12"' 
 
D 
 
FE 
 
311 
 
12" 
 
so 
 
FE 
 
D 
 
FE 
 
1"' 120'' 
1" 
60" 
3" 
3"' 36" 
 
FE,SI02 
 
D 
 
SI02 
 
D FE,SI02 
 
D D 
 
D 
 
FE 
 
9" 
 
60'' 
 
D 
 
FE 
 
72" CLOSED 
 
D 
 
FE 
 
D 
 
FE 
 
17 
 
 Map Sta 23 24 25 25 25 25 26 27 27 27 28 29 30 30 30 31 31 32 32 32 32 32 32 32 32 33 34 34 34 34 34 34 35 35 35 36 37 38 39 40 40 40 41 42 43 43 43 43 43 44 44 44 45 45 46 47 47 48 48 48 48 49 50 51 52 52 52 53 54 55 
 
Eastlng 145 110 95 95 95 95 85 75 75 75 50 115 150 150 150 235 235 265 265 265 265 265 265 
265 
265 320 140 140 140 140 140 140 125 125 125 110 25 
65 
80 25 25 25 530 650 620 620 620 620 620 650 650 650 755 755 500 445 445 645 645 645 645 870 805 645 540 540 540 650 850 745 
 
Southlng Rx Typ 
 
125 
 
GSS 
 
80 
 
GSS 
 
50 
 
GSS 
 
50 
 
GSS 
 
50 
 
GSS 
 
50 
 
GSS 
 
35 
 
OMS 
 
15 
 
BQFG 
 
15 
 
BOFG 
 
15 
 
BOFG 
 
200 
 
GSS 
 
200 
 
GSS 
 
20 
 
GSS 
 
20 
 
GSS 
 
20 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
0 
 
GSS 
 
555 BOFG 
 
555 BOFG 
 
555 BOFG 
 
555 BOFG 
 
555 
 
OMS 
 
555 
 
OMS 
 
610 BOFG 
 
610 BOFG 
 
610 BOFG 
 
615 
 
OMS 
 
605 BQFG 
 
660 OMS 
 
705 BOFG 
 
870 
 
OMS 
 
870 
 
OMS 
 
870 
 
OTE 
 
360 BQFG 
 
360 
 
OMS 
 
660 BQFG 
 
660 BOFG 
 
660 
 
OMS 
 
660 OMS 
 
660 
 
OMS 
 
730 BOFG 
 
730 
 
OMS 
 
730 
 
OMS 
 
705 
 
OMS 
 
705 
 
OMS 
 
645 
 
OMS 
 
810 BOFG 
 
810 BQFG 
 
1145 OMS 
 
1145 OTE 
 
1145 OTE 
 
1145 
 
OTE 
 
1995 BOFG 
 
2005 AMPH 
 
2085 OMS 
 
1995 GBOFG 
 
1995 GBQFG 
 
1995 GBOFG 
 
1710 FCR 
 
1775 BOFG 
 
1635 BQFG 
 
Fol Trend N13E N25W N15E 
N54E N28E 
N74E N48E N30E 
N42E N79E N5E 
N26E 
N54W N63W N20W 
N44E N8E N40E N39E N3E N45E 
N58W N70W 
N72W N64E NBOE N76E N26E 
N70W N87E 
N69W N65W 
NBOW N21E 
 
Fol Dip 84NW 34SW 30NW 
38SE 23NW 
45NW 46NW 55NW 
59NW 20NW 32NW 
35NW 
13SW 15SW 8SW 
26NW 38NW 33NW 17SE 31NW 29NW 
10SW 11SW 
33SW 40SE 35SE 73SE 33NW 
38NE 45NW 
50NE 19NE 
81NE 12NW 
 
FOLD FOLD FOLD FOLD FOLD 
FOLD 
 
Trend Dip Plunge N25E BONW 
 
N55W 73NE N20W 68NE N15E 70SE 
 
N43E N28E N78E N11W N85E N10W N55W N70E N30W N30E N52W N70W N10W N89E N30W N35E N50E N5E 
 
78SE 90W 70SW 89NE 89NW 51NE 62SW 86NW 
75NE 75NE 84SW 78SE 82SW 
 
50NW 49SW 
14SW 7SW 7SW 
 
N47E N71W N25W N68W N70W N36W N20W N76W N40W 
 
87SE 85SW 70NE 69NE BONE BONE 78NE 76NE 80SW 
 
N10W 89NE 
 
N40W N55E N35W NOW 
 
85SW 89NW 89NE 88NE 
 
N59W N15W N26W N74E NBOE 
 
B4NE BONE 86SW 74SE 81NW 
 
N36W 40NE N55W 51SW 
N39W BONE N41E BONW 
N20W BONE NOW 90E N2BE 89SE 
 
N83E 73SE N16W 68SW N85E 
 
12SW 
 
Joints Space Persist 
36" 
 
Dilat. D 
 
Weath. FE 
 
4" 
 
12" 
 
D 
 
MN,SI02 
 
12" 
 
D 
 
FE 
 
so 
 
FE 
 
3" 
 
so 
 
MN 
 
MN 
 
12" 
 
1" 
 
2" 
 
12" 
 
D 
 
FE 
 
2" 
 
BO" 
 
D 
 
FE,MN 
 
4" 
 
72" 
 
D 
 
FE,MN 
 
6" 
 
6" 
 
120" 
 
D 
 
FE,MN 
 
6" 
 
36" 
 
so 
 
OPEN 
 
12" 
 
4" 
 
12" 
 
SD 
 
FE 
 
24" 
 
D 
 
SI02 
 
4" 
 
24" 
 
D 
 
FE 
 
4" 
 
6" CLOSED 
 
.5" 
 
24" CLOSED MN 
 
4" 
 
18" 
 
D 
 
FE 
 
5" 
 
12" 
 
18" 
 
D 
 
SI02 
 
4" 
 
SD 
 
FE 
 
2" 
 
12'' CLOSED FE 
 
2' 
 
12" 
 
2" 
 
12" CLOSED 
 
3" 
 
12" 
 
D 
 
2" 
 
5" CLOSED 
 
2" 
 
5" CLOSED 
 
1" 
 
24" CLOSED 
 
.5" 
 
24" 
 
D 
 
FE 
 
2" CLOSED 
 
75" 
 
24" CLOSED 
 
1" 
 
12" CLOSED 
 
3" 
 
36'' CLOSED 
 
24" CLOSED 
 
24" CLOSED 
 
2" 
 
24" 
 
D 
 
OPEN 
 
12" 
 
24" CLOSED 
 
18 
 
 Map Sta 56 57 58 59 60 60 61 61 61 61 62 62 62 62 62 62 62 62 62 63 63 64 64 64 64 65 65 65 66 66 66 66 66 66 66 66 67 68 68 68 68 68 69 69 69 69 69 69 69 69 70 70 71 71 72 73 73 74 75 75 76 77 77 77 76 79 BO BO 80 61 
 
Eastlng 740 735 730 1035 1010 1010 810 810 810 810 1005 1005 1005 1005 1005 1005 1005 1005 1005 1010 1010 1115 1115 1115 1115 1200 1200 1200 1210 1210 1210 1210 1210 1210 1210 1210 1210 1210 1210 1210 1210 1210 1250 1250 1250 1250 1250 1250 1250 1250 1330 1330 1385 1385 1340 1310 1310 1310 970 970 1060 1240 1240 1240 1175 1355 1415 1415 1415 1475 
 
Southlng Rx Typ 
 
1550 GBOFG 
 
1500 BQFG 
 
1450 BQFG 
 
615 
 
IP 
 
620 
 
GSS 
 
620 
 
GSS 
 
820 AMPH 
 
820 AMPH 
 
820 AMPH 
 
820 
 
GSS 
 
1020 QTE 
 
1020 QTE 
 
1020 QTE 
 
1020 QTE 
 
1020 QTE 
 
1020 SBOFG 
 
1020 SSG 
 
1020 SSG 
 
1020 SSG 
 
1000 GQMS 
 
1000 GQMS 
 
685 BQFG 
 
685 BQFG 
 
685 BOFG 
 
685 BOFG 
 
915 
 
FCR 
 
915 
 
FCR 
 
915 
 
FCR 
 
915 
 
QTE 
 
915 
 
QTE 
 
915 
 
QTE 
 
915 
 
QTE 
 
915 
 
QTE 
 
915 
 
QTE 
 
915 
 
QTE 
 
915 
 
SSG 
 
920 SBOFG 
 
960 
 
QTE 
 
960 
 
QTE 
 
960 
 
QTE 
 
960 
 
QTE 
 
960 
 
QTE 
 
995 BOFG 
 
995 BOFG 
 
995 
 
OMS 
 
995 
 
QTE 
 
995 
 
QTE 
 
995 
 
QTE 
 
995 
 
QTE 
 
995 
 
SSG 
 
915 
 
QTE 
 
915 
 
QTE 
 
960 
 
QTE 
 
960 
 
QTE 
 
925 GKQMS 
 
900 SBOFG 
 
900 SBQFG 
 
690 SBQFG 
 
330 
 
GSS 
 
330 
 
GSS 
 
185 BOFG 
 
290 BOFG 
 
290 BQFG 
 
290 
 
GSS 
 
560 BOFG 
 
110 
 
GSS 
 
140 BQFG 
 
140 BQFG 
 
140 BQFG 
 
1BO BQFG 
 
Fol Trend N68W N70E N85E 
N48E 
N75E N47E N42E N50E 
N42E N48W N45E N52E N62E N46E 
N72W 
N75E 
N72E N74E N69E N75E 
N85W N70E N86E N83W NOOE 
N72E 
N86W 
N84E N63E N62E 
N58E N65E N72W 
N70W 
N88E N57W N55W N86E N68W N87W N40W 
N87W 
N3W 
 
FoiDip 20NE 16NW 10NW 
70SE 
66SE 26NW 20NW 24NW 
14NW 18NE 25NW 27NW 25NW 32NW 
21SW 
88NW 
68NW 65NW 52NW 60NW 
70NE 42NW 21NW 22NE 
20N 
62NW 32NE 40NW 37NW 46NW 
19NW 48NW 52NE 
30NE 
66NW 45SW 35SW 36SE 20SW 14SW 22SW 
72NE 
32SW 
 
FOLD 
 
Joints Trend Dip Plunge Space Persist Oilat. 
 
Weath. 
 
NOE 90W N2W 65SW 
 
1.5" 6" 
 
D 
 
OPEN 
 
N55W N20W N53E N55W N28E N8W N76E N29E N12W N44W 
 
76NE 
eosw 
89SE 60NE 87NW 83NE 82NW 70NW 73NE 76SIN 
 
36" 
 
6" 
 
D 
 
SI02 
 
2" 
 
3" 
 
3" 
 
6'' 
 
D 
 
SI02,FE 
 
so 
 
FE 
 
2" 
 
12" 
 
1" 
 
12" 
 
D 
 
MN,FE 
 
so 
 
MN 
 
1" 
 
6" 
 
D 
 
OPEN 
 
.5" 
 
1" CLOSED 
 
1.5" 
 
12" CLOSED 
 
6" 
 
>120" CLOSED 
 
1.5" 6-6" CLOSED 
 
N38W N68E N90W N20W N50W N15E N84E N59W N5E N85E N19W N50E N56E N16W N35W N30E 
 
87NE 72SE 50N 82NE 74NE 85SE 60SE 57SW 48SE 66SE 88NE 67SE 32SE 90E 86NE 65SE 
 
N50W N72E N12E N45E N58E 
 
87SW 64SE 78SE 81SE 85NW 
 
1" 
 
6'' 
 
D 
 
OPEN 
 
6'' 
 
D 
 
FE 
 
12" 
 
so 
 
FE 
 
2" 
 
8" 
 
so 
 
OPEN 
 
9" 
 
3-4" CLOSED 
 
12" 
 
24" 
 
D 
 
OPEN 
 
.25" 
 
3" CLOSED 
 
6'' 
 
5" CLOSED 
 
6" 
 
24" CLOSED 
 
D 
 
MN,SI02 
 
5" 
 
60" CLOSED 
 
2-3" 
 
60'' CLOSED 
 
1" 
 
>24" 
 
7" 
 
24" 
 
D 
 
OPEN 
 
so MN,SI02 
 
2-3" 
 
6'' CLOSED 
 
6'' 
 
18" CLOSED 
 
.5" 
 
60" CLOSED 
 
29" 
 
12" CLOSED 
 
.5-1 " 96" 
 
so 
 
FE 
 
N53E N69E N76W N45E 
 
33SE 74SE 62SW 64SE 
 
N22E NBOE N49E N14W 
 
84NW 37SE 87SE BONE 
 
N75E 39SE N30W 66SIN 
 
N65W N65E N59W N58E N70W N25W N68E 
 
46NE 85SE 56NE 85NW 85NE 72NE 83NW 
 
N86E 
N15W N50W N65E 
 
BONE BONE 80SE 
 
4SW 
 
.5-1 " .5" 4" 
 
48 CLOSED 
 
24" 
 
D 
 
SI02 
 
36'' 
 
D 
 
OPEN 
 
46" 
 
D 
 
OPEN 
 
2" 
 
12" 
 
2.5" 
 
12" 
 
so 
 
OPEN 
 
so 
 
OPEN 
 
2-4'" 36-48" CLOSED 
 
2" 
 
>160'' CLOSED 
 
6'' .5-1 " 
1" 12" 
.5-1" 
1" .5-1'' 
 
5' CLOSED 
6' CLOSED 
 
6'' 
 
so 
 
FE 
 
36" 
 
so 
 
OPEN 
 
4" 
 
so 
 
FE 
 
1'" CLOSED 
 
36'' 
 
D 
 
OPEN 
 
12" 
 
so 
 
FE 
 
6'' 
 
D 
 
OPEN 
 
36" 
 
48" 
 
2" 
 
2" CLOSED 
 
6" 
 
9" 
 
0 
 
OPEN 
 
19 
 
 Map Sta 81 81 82 82 82 83 83 83 84 84 84 85 85 85 85 85 86 87 88 88 89 90 91 91 91 91 91 92 92 92 93 93 94 95 96 97 97 97 97 98 98 99 99 100 100 100 101 101 101 102 102 102 102 102 103 103 103 103 104 104 104 104 104 104 105 105 106 106 106 106 
 
Eastlng 1475 1475 1490 1490 1490 1545 1545 1545 1570 1570 1570 1625 1625 1625 1625 1625 1690 1705 1750 1750 1805 1815 1790 1790 1790 1790 1790 1540 1540 1540 1625 1625 1700 1470 1470 1470 1470 1470 1470 1465 1465 1460 1460 1460 1460 1460 1485 1485 1485 1460 1460 1460 1460 1460 1410 1410 1410 1410 1460 1460 1460 1460 1460 1460 1460 1460 1450 1450 1450 1450 
 
southlng Rx Typ Fol Trend 
 
1BO BQFG 
 
1BO BQFG 
 
185 BOFG N15W 
 
185 BQFG 
 
185 BOFG 
 
215 BOFG 
 
N4W 
 
215 BQFG 
 
215 BOFG 
 
235 
 
BQFG 
 
N22E 
 
235 BOFG 
 
235 BQFG 
 
255 BQFG N20E 
 
255 BQFG 
 
255 
 
GSS 
 
N28W 
 
255 
 
GSS 
 
255 
 
GSS 
 
290 
 
GSS 
 
N20E 
 
295 BQFG N22E 
 
305 
 
GSS 
 
N34E 
 
305 
 
GSS 
 
N40E 
 
320 
 
GSS 
 
N39E 
 
320 BOFG 
 
355 
 
OMS 
 
N55E 
 
355 
 
OMS 
 
355 
 
OMS 
 
355 
 
OMS 
 
355 OMS 
 
205 BQFG 
 
205 BOFG 
 
205 BQFG 
 
115 BOFG 
 
115 BOFG 
 
25 
 
BQFG 
 
65 
 
GSS 
 
N76E 
 
30 
 
GSS 
 
N62E 
 
15 
 
GSS 
 
N65E 
 
15 
 
GSS 
 
15 
 
GSS 
 
15 
 
GSS 
 
205 BQFG 
 
205 BQFG 
 
410 
 
GSS 
 
N72E 
 
410 
 
GSS 
 
455 BQFG 
 
455 BQFG 
 
455 BOFG 
 
545 SBQFG 
 
545 SBOFG 
 
545 SBQFG 
 
715 BOFG N20W 
 
715 BOFG N11W 
 
715 BQFG 
 
N10E 
 
715 BQFG? 
 
715 SBOFG 
 
NOW 
 
740 
 
SSG 
 
N50E 
 
740 
 
SSG 
 
N49E 
 
740 
 
SSG 
 
N65E 
 
740 
 
SSG 
 
725 
 
FCR 
 
N28E 
 
725 SBQFG N10E 
 
725 SBQFG 
 
725 SBQFG 
 
725 SBQFG 
 
725 
 
SSG 
 
N22E 
 
BOO 
 
OMS 
 
N70W 
 
BOO 
 
OMS 
 
840 
 
OTE 
 
N47E 
 
840 
 
QTE 
 
840 
 
OTE 
 
840 SBOFG N54E 
 
Fol Dip 50NE 
25NE 27SE 
34NW 82SW 
62NW 12NW 61NW 52NW 75NW 10SE 
60SE 70SE 65SE 
63NW 
60SW 28NE 20NW 35E 20NW 27NW 24NW 22NW 15NW 
26NW 30NE 25NW 
26NW 
 
FOLD FOLD 
FOLD 
 
Trend N45E N60W N15W N85E 
N60W 
N65W N25W N75E N70E N30W N10E N30E N10E 
 
Dip 90NW 90NE B9NE 89NW 89NE 88NE 85NE 88NW 77SE 89NE 88NW 73SE 82NW 
 
Plunge 
 
N24E N50E N49E N34E N40W N60W N82E N85E N20W N69E N38E N55E N70E N30W N4W N70W N85E N12W N10W N10W N45W N5E N90E N60E N30W N32W N30E N20E NBOE N85E N70W N62E N35W N75W N60E N32W N10E N45W N13W N85E N55W N55E N10E N85E N75W N55E N10W N85E N45W N58E N45E N2W N5E N5W N75E N25E 
 
BOSE 
84SE BONE 51NE 79NW 68NW 50NE 71NW 48NW 10SE 
87SW 68NE 70SW BONW 70NE 82SW BONE 60NE 75SE 77N 77NW 86NE 66NE 52SE BONW BOSE 60SE ?ONE 72SE 85NE 60NE 47SE 77NE 85SE BONE 76NE 72SE 83NE 88NW 53NW 74NW 68SW 84NW 83SW 90NW 90NE 72SE 85SE ?ONE 78SE 70SW 45SE 65SE 
 
51SW 18SW 
25SW 
 
Joints Space Persist Dllat 
 
Weath. 
 
18" 
 
12" 
 
D 
 
OPEN 
 
9" 
 
6'' CLOSED 
 
4" 
 
8" CLOSED 
 
4" 
 
18" CLOSED 
 
1" 
 
6" 
 
SO 
 
OPEN 
 
12" 
 
24" 
 
D 
 
FE 
 
1" 
 
4" CLOSED 
 
1'' 
 
4811 
 
D MN, OPEN 
 
48" 36-48" 
 
D 
 
OPEN 
 
8" 
 
12" CLOSED 
 
9'' CLOSED 
 
8" 
 
36" 
 
SO 
 
FE 
 
4-5" 
 
12" 
 
so 
 
FE 
 
6"' CLOSED 
 
6-9" 
 
36" CLOSED 
 
2" 
 
6'' 
 
so 
 
MN 
 
2" 
 
12" 
 
so 
 
MN 
 
2" 
 
15" CLOSED 
 
5-8" 30'' 
 
SO 
 
OPEN 
 
6" 
 
10' CLOSED 
 
1" 
 
24" 
 
6'' 
 
120' 
 
SO 
 
OPEN 
 
1" 
 
4" 
 
SDS 
 
OPEN 
 
24-36" CLOSED 
 
6" 
 
12" 
 
4" 
 
2" 
 
D 
 
OPEN 
 
1.5" 36"' CLOSED 
 
.25" 
 
18" CLOSED 
 
2" 
 
42" 
 
D 
 
OPEN 
 
24" 
 
72" CLOSED 
 
12" 
 
24" 
 
D 
 
OPEN 
 
48" CLOSED 
 
1,." 
 
6'' CLOSED 6'' CLOSED 
 
1" 3" 
1" 2" 2.5" .5-2" 
1.5" .5" 4" 1" 4" 
6-12" 
 
6"' 15" 48" 12" 6"' 3" 6'' 24" 6'' 36" 12" 12" 4" 36-48" 8" 
 
SO CLOSED CLOSED CLOSED 
 
MN,OPEN 
 
CLOSED CLOSED 
D D CLOSED D CLOSED CLOSED CLOSED D 
 
OPEN OPEN OPEN 
OPEN 
 
.5" 
 
6"' 
 
D 
 
OPEN 
 
2.5" 
 
2" 
 
D 
 
OPEN 
 
1" 18-24" CLOSED 
 
2" 
 
12" CLOSED 
 
.5" 
 
18" 
 
so 
 
MN 
 
20 
 
 Map Sta 106 106 106 106 106 106 107 108 108 109 109 109 110 110 110 110 110 110 111 111 111 112 112 113 113 113 113 114 114 115 115 115 115 116 117 118 118 119 119 119 119 120 121 121 121 121 122 122 122 122 123 123 123 124 124 124 125 126 126 126 126 127 127 128 128 129 129 130 130 131 
 
Eastlng 1450 1450 1450 1450 1450 1450 1440 1435 1435 1445 1445 1445 1435 1435 1435 1435 1435 1435 1435 1435 1435 1465 1465 1510 1510 1510 1510 1555 1555 1610 1610 1610 1610 1720 1830 1885 1885 1840 1640 1640 1640 1745 1740 1740 1740 1740 1750 1750 1750 1750 1770 1770 1770 1625 1825 1825 1675 1690 1690 1890 1690 1660 1860 1650 1850 1610 1610 1650 1850 1755 
 
Southlng Rx Typ 
 
840 SBQFG 
 
840 SBQFG 
 
840 SBQFG 
 
840 SBQFG 
 
840 SBOFG 
 
840 SBQFG 
 
915 
 
OMS 
 
960 
 
QTE 
 
960 
 
QTE 
 
970 
 
QTE 
 
970 
 
QTE 
 
970 
 
QTE 
 
985 
 
QTE 
 
985 
 
QTE 
 
985 
 
QTE 
 
985 
 
QTE 
 
985 
 
QTE 
 
985 
 
QTE 
 
1065 SBQFG 
 
1065 SBQFG 
 
1065 SBQFG 
 
885 
 
SSG 
 
885 
 
SSG 
 
860 
 
SSG 
 
860 
 
SSG 
 
860 
 
SSG 
 
860 
 
SSG 
 
835 
 
SSG 
 
835 
 
SSG 
 
820 SBQFG 
 
820 SBQFG 
 
820 SBQFG 
 
820 
 
SSG 
 
1110 BOFG 
 
1085 BQFG 
 
1075 QTE 
 
1075 QTE 
 
820 SBQFG 
 
820 SBQFG 
 
620 SBQFG 
 
820 SBQFG 
 
810 
 
SSG 
 
780 SBOFG 
 
780 SBQFG 
 
780 SBQFG 
 
780 SBQFG 
 
710 
 
QTE 
 
710 
 
QTE 
 
710 
 
QTE 
 
710 
 
SSG 
 
665 SBQFG 
 
665 SBQFG 
 
665 SBQFG 
 
660 
 
SSG 
 
660 
 
SSG 
 
660 SSG 
 
625 
 
SSG 
 
550 SBQFG 
 
550 SBOFG 
 
550 SBOFG 
 
550 SBOFG 
 
665 
 
SSG 
 
665 
 
SSG 
 
700 SSG 
 
700 
 
SSG 
 
775 
 
SSG 
 
775 
 
SSG 
 
730 SBQFG 
 
730 SBQFG 
 
815 
 
SSG 
 
Fol Trend N77W NSOW 
N17W 
N80E N85E N86W N45E N80W N83W N75W N70W 
N80E N85E N54E N75E N88W N60E N60E N85E 
N84E 
N65W 
N75W N80W N85W N80E 
N78E N80W N53W 
N72W N20E N30E 
N72W 
N10E N12W N34E 
N40E N65E N84E N53E N42E 
N42E N55E N50E 
N55E 
N40E 
N7CNV 
 
Fol Dip 
23NE 35NE 
29SW 
25NW 34NW 29NE 20NW 16NE 29NE 20NE 38NE 
6NW 21NW 37NW 37NW 32NE 22NW 35NW 35NW 
21NW 
44NE 
55NE 
SONE 
25NE 43NW 
36NW 47NE 53NE 
43NE 33NW 31NW 
43NE 
26SE 10NE 26NW 
34NW 53NW 35NW 43NW 44NW 
34NW 49NW 25NW 
29SE 
24NW 
43NE 
 
FOLD FOLD 
 
r ...nd 
N65W N85W N5W N35E N65E N80W 
 
Dip 
72SW 80SW 76SW 69SE 70SE 
 
Plunge 20NW 
 
N55W N50E N85E 
N40E 
N45W N35W NOW N75W N10E N88W N50E N44E N30E N65E N40W 
 
65SW 82NW 76NW 
78NW 
65NE 73SW 86SE 76SW 55SE 
76SE 62SE 73SE 61SE 61NE 
 
8NW 
 
N22E NOE N35W N80E NOE N65W N15E N5E N75E 
 
70SE 86W 71NE 88NW 88W 44NE 88SE 66NW 88SE 
 
N30W N45E NOE N70E N37E N35W 
 
88NE 66SE 69NE SOSE 85SE 77SW 
 
N70E N5E N60W N30W N88E N5W N80E 
 
63NW 74NW 32SW B6NE 53NW 35NE B6SE 
 
N10E N35W N60W NSOE N5E 
 
70NW 80NE 78NE 79SE 79SE 
 
N45W N62E N8E N15W N18E N5W 
 
90NE 87NW 76NW 64NE 56NW 70NE 
 
N12W N50W N65W N23E N74E N2W 
 
42NE SOSW 80SW SOSE 62SE 85NE 
 
Space 1" 
.5-1 " 
6" 
18" 
2" 
 
Joints Persist 
4" 12" 24" 48" 36'' 
 
Dllat 
0 0 0 
so 
 
Waath. 
FE,MN MN,OPEN 
MN MN  
 
3" 311 1" 1" 1" 1" 
. 5-2" 4" 
2" 
 
12" 1211 24" 36" 1-2" 4" 72-84" 6" 24" 
 
CLOSED 
 
SD 
 
FE 
 
D 
 
SI02,MN 
 
SD 
 
FE 
 
SD 
 
CLOSED 
 
D VQ,OPEN 
 
CLOSED 
 
CLOSED 
 
1-2" 
 
48" 
 
0 
 
30" 
 
30" 
 
so 
 
1" 
 
36" 
 
0 
 
24" 36-48" 
 
0 
 
1" 
 
6" 
 
FE,VQ OPEN OPEN open 
 
12" 
 
24" 
 
D 
 
OPEN 
 
2" 
 
5" 
 
SD 
 
FE 
 
12" 16-36" SD 
 
OPEN 
 
48" 
 
SD 
 
OPEN 
 
36" 
 
12" CLOSED 
 
4" 
 
8" CLOSED 
 
1" 
 
6" CLOSED 
 
.5" 
 
2" 
 
SD 
 
FE 
 
2.5" 
 
4" 
 
so 
 
FE 
 
2" 
 
6'' 
 
2" 
 
6" CLOSED 
 
.5" 
 
12" CLOSED 
 
18" 
 
D 
 
OPEN 
 
36" 
 
D 
 
OPEN 
 
2-6" 6'' 3" 2-18' ' 2" 3" 
 
3" 60'' 6'' 6-24" 2" 18" 
 
D 
CLOSED CLOSED 
SD 
 
OPEN OPEN 
 
8" 
 
18" 
 
D 
 
OPEN 
 
12" 
 
SD 
 
OPEN 
 
10'' 
 
8" 
 
0 
 
OPEN 
 
2" 
 
48" CLOSED 
 
2-4" 
 
3" 
 
so 
 
OPEN 
 
6'' CLOSED 
 
12" 
 
36'' 
 
1" 
 
24" 
 
1" 
 
6'' 
 
5-1 " 
 
5" 
 
0 
 
OPEN 
 
so 
 
OPEN 
 
so 
 
FE 
 
so 
 
OPEN 
 
24" 
 
18" 
 
60'' 
 
1" 
 
12" 
 
48" 
 
6'' 
 
10'' 
 
so 
 
so 
 
FE 
 
so 
 
OPEN 
 
so 
 
OPEN 
 
so 
 
MN,FE 
 
21 
 
 Map Sta 132 133 133 133 133 133 133 134 134 134 134 134 134 134 134 134 135 136 136 136 136 136 136 137 137 137 138 139 139 139 139 139 139 140 141 142 142 142 142 143 143 144 144 145 145 145 146 147 148 148 149 150 151 151 152 152 152 153 153 154 154 154 154 154 154 154 154 154 155 156 
 
Eastlng 1710 1670 1670 1670 1670 1675 1675 1675 1675 1675 1675 1675 1675 1675 1675 1675 1670 1675 1675 1675 1675 1675 1675 1665 1665 1665 1630 1890 1890 1890 1890 1890 1890 1850 1840 1835 1835 1835 1835 1830 1830 1845 1845 1885 1885 1885 1895 1210 1095 1095 1000 600 575 575 500 500 500 220 220 65 65 65 65 65 65 65 65 65 100 210 
 
Southlng Rx Typ 
 
875 BQFG 
 
930 
 
OTE 
 
930 
 
OTE 
 
930 
 
OTE 
 
930 
 
OTE 
 
940 
 
OTE 
 
940 
 
OTE 
 
965 GOMS 
 
965 GOMS 
 
965 GOMS 
 
965 GOMS 
 
965 
 
OTE 
 
965 
 
OTE 
 
965 
 
OTE 
 
965 
 
OTE 
 
965 
 
VO 
 
980 
 
OTE 
 
1010 OTE 
 
1010 OTE 
 
1010 OTE 
 
1010 OTE 
 
1010 OTE 
 
1010 OTE 
 
1030 BQFG 
 
1030 BQFG 
 
1030 BOFG 
 
1140 BOFG 
 
1040 GOMS 
 
1040 OTE 
 
1040 OTE 
 
1040 OTE 
 
1040 OTE 
 
1040 OTE 
 
1030 SSG 
 
1005 OMS 
 
1005 OTE 
 
1005 OTE 
 
1005 OTE 
 
1005 OTE 
 
970 
 
OTE 
 
970 
 
OTE 
 
940 SBOFG 
 
940 SBOE'G 
 
890 AMPH 
 
890 
 
SSG 
 
890 
 
SSG 
 
850 SBQFG 
 
855 
 
SSG 
 
1410 BQFG 
 
1410 BOFG 
 
1335 AMPH 
 
1150 OTE 
 
1145 OTE 
 
1145 OTE 
 
1115 SBQFG 
 
1115 SBQFG 
 
1115 SBQFG 
 
1000 BQFG 
 
1000 BOFG 
 
1340 BOFG 
 
1340 BOFG 
 
1340 OMS 
 
1340 OTE 
 
1340 OTE 
 
1340 OTE 
 
1340 OTE 
 
1340 OTE 
 
1340 SSG 
 
1480 GBQFG 
 
1350 SSG 
 
Fol Trend 
N72W N84W N50W 
N67W N58W N40W N52W 
N64E N85W NBOW N90E NBOE N88W NBOE N85E 
N81E N65E N75E 
N69W N37W N50E NBOW 
N67W 
N69W 
N43E N68E N82E N67W N70W N12E N15W 
N40E N65E 
N40W 
N74W N85E N78W N75E N56W NBOE N76E 
N72W N40E N76E 
 
FoiDip 
32NE 35NE 27NE 
43NE 33NE 29NE 29NE 
56NW 18NE 14NE 60N 24NW 29NE 21NW 13NW 
34NW 16NW 21NW 
12NE 20NE 9NW 20NE 
23NE 
28NE 
77NW 23SE 25SE 23NE 65NE 44NW 40SW 
34SE 55NW 
27NE 
26NE 35NW 50NE 32NW 53NE 44NW 47NW 
33NE 30NW 53NW 
 
FAULT FOLD 
 
Trend Dip Plunge 
 
N65W N25E N90E N20W 
 
51SW 64SE 71S 85NE 
 
N8E N14W N88E N35W N90E N50E N45W N15E N70E N45W 
 
88SE 67NE 40NW 45NE 70S 64SE 70SW 88SE BONW 
 
11NW 
 
N63W N55W N87E N47E N10W N30E N5W N60E N30W N18W 
 
78SW 37SW 60SE 45SE 88NE BOSE 79SW 70NW 85NE BOSW 
 
N40W N30E N10W N90E N65E 
 
83SW BOSE 85SW 75N 89SE 
 
N60W N55E N40W N25E N65W N40W N65W N67E 
 
77SW 88NW 75NE 74NW 75SW 
90E 83SW 77SE 
 
N70W 89NE N10E BONW 
 
N27W N20E N8E N30E N89E N80W N30W 
 
80SW 64SE 82NW 87NW 59SE SBNE 58SW 
 
N27W N90E N60E NOW N15W N4E 
 
77NE 70S 44SE 70E 85NE 77SE 
 
Joints Space Persist Dllal 
 
Weath. 
 
2-4" 12-36'' 
 
D 
 
OPEN 
 
2" 
 
48" 
 
SD 
 
1-2" 4-6'' 
 
SD 
 
FE 
 
111 
 
3" CLOSED 
 
12" 
 
192" 
 
D 
 
OPEN 
 
12-120" 96" 
 
D 
 
FE 
 
12" 
 
60" 
 
D 
 
FE 
 
12-36" 96" 
 
D O,FE,OPE 
 
1" 
 
SH CLOSED 
 
8" 
 
16" CLOSED 
 
3" 
 
24'' CLOSED 
 
12-36" 12" 
2" 1" 25-1" 12" 
6" 
 
36" 36" 60" 48" 24-36" 12" 48" 10" 6'' 12" 
 
SO 
 
FE 
 
D 
 
MN 
 
D 
 
MN,VQ 
 
SD 
 
MN,FE 
 
D 
 
FE,MN 
 
SD MN,OPEN 
 
SD 
 
CLOSED 
 
D 
 
FE 
 
D 
 
FE,OPEN 
 
1" .5-1" 
1" 
1-2" 4" 
 
4" 
 
D 
 
MN 
 
12" CLOSED 
 
8" 
 
SD 
 
FE 
 
2-3" CLOSED 
 
16" 
 
D 
 
FE, OPEN 
 
1" 
 
4-6" CLOSED 
 
12" 
 
12" 
 
D 
 
FE 
 
3" 36-48" 
 
D 
 
OPEN 
 
2'' 
 
6" CLOSED 
 
6'' 
 
12" 
 
D 
 
OPEN 
 
.5" 
 
12" 
 
D 
 
OPEN 
 
1" 
 
12" 
 
D 
 
FE 
 
1.5" 
 
6'' 
 
SD 
 
FE 
 
12" 
 
36" 
 
D 
 
FE 
 
1" 
 
24" 
 
D 
 
FE 
 
,5-1 " 3-8" 
 
48" 
 
4" CLOSED 
 
12-18" 
 
D 
 
MN,FE 
 
5" .5-2" 
 
12" CLOSED 18" 
 
3" 3" .51" 
1(}.12" 24" 8-12" 
 
18" 2-3" 4" 24" 36-48" 4' 
 
so 
SD 
D CLOSED CLOSED 
 
FE FE 
OPEN 
 
22 
 
 Joints 
 
Map Sta Eastlng Southlng Rx Typ Fol Tntnd Fol Dip 
 
Tntnd Dip Plunge Space Persist Dllat. Weath. 
 
157 
 
285 
 
1300 SBQFG N76E 
 
27NW 
 
N10E 76NW 
 
6" 
 
24" CLOSED 
 
157 
 
285 
 
1300 SBQFG N90E 
 
35N 
 
157 
 
285 
 
1300 SBOFG N67W 
 
29NE 
 
N76E 39SE N25E 77SE 
 
.5-1 " 
 
812" CLOSED 2" CLOSED 
 
157 
 
285 
 
1300 SBOFG N80W 
 
18NE 
 
157 
 
285 
 
1300 SBOFG N76E 
 
46NW 
 
157 
 
285 
 
1300 SBOFG N82W 
 
31NE 
 
158 
 
335 
 
1615 BOFG N70W 
 
37NE 
 
159 
 
50 
 
1995 SSG 
 
N10W 
 
18NE 
 
159 
 
50 
 
1995 SSG 
 
160 
 
30 
 
2230 SBQFG N40E 
 
32SE 
 
160 
 
30 
 
2230 SBOFG 
 
160 
 
30 
 
2230 SBOFG 
 
160 
 
30 
 
2230 SBOFG 
 
N84W N65E N15W N40E N20W N90E N60E 
 
37NE 65NW 64SW 36SE 70SW 
70S 65NW 
 
.5" 
 
3" 
 
so 
 
FE 
 
.5" 
 
.5" 
 
SD 
 
4" 
 
1" 
 
18" 
 
12'' 
 
D 
 
OPEN 
 
12" 
 
12" 
 
D 
 
OPEN 
 
160 
 
30 
 
2230 SBQFG 
 
N55W 70SW 
 
161 
 
330 
 
2180 BOFG N45E 
 
34SE 
 
162 
 
1015 
 
2230 GBQFG N65W 
 
4NE 
 
N90E 90W 
 
163 
 
600 
 
1095 SBOFG N58E 
 
50SE 
 
163 
 
600 
 
1095 SBOFG 
 
163 
 
600 
 
1095 SBOFG 
 
N5W BSNE NOE 75W N25W 90E 
 
36'' 48-72" 8" 
 
163 
 
600 
 
1095 SBOFG 
 
NJSE 80NW 
 
163 
 
600 
 
1095 SBQFG 
 
N75W 85SW 
 
164 
 
1215 
 
1750 SSG 
 
N74W 
 
63SW 
 
165 
 
1240 
 
1840 GBOFG 
 
N23E 75SE 
 
165 
 
1240 
 
1840 GBOFG 
 
N61W 68NE 
 
165 
 
1240 
 
1840 GBQFG 
 
N34E 7NW 
 
165 
 
1240 
 
1840 OMS 
 
N25W 
 
21NE 
 
165 
 
1240 
 
1840 OMS 
 
N62W 
 
31NE 
 
165 
 
1240 
 
1840 OMS 
 
N30W 
 
6NE 
 
N84E 90W 
 
166 
 
1260 
 
1860 OMS 
 
NJSW 
 
29NE 
 
N80E 90W 
 
167 
 
1300 
 
1945 GBOFG N20W 
 
30NE 
 
N82W 33fNV 
 
167 
 
1300 
 
1945 GBOFG N30W 
 
25NE 
 
N25E 60NW 
 
168 
 
1290 
 
2225 GBOFG N58E 
 
33SE 
 
168 
 
1290 
 
2225 GBOFG N42E 
 
30SE 
 
168 
 
1290 
 
2225 GBOFG N68E 
 
49SE 
 
169 
 
1175 
 
2000 BOFG N72W 
 
19NE 
 
N8E 85NW 
 
2-7" 
 
8" 
 
169 
 
1175 
 
2000 BOFG 
 
N50W 87NE 
 
169 
 
1175 
 
2225 BQFG 
 
170 
 
1440 
 
1635 GBOFG N25W 
 
4NE 
 
170 
 
1440 
 
1635 GBOFG 
 
171 
 
1525 
 
2045 GBQFG N18W 
 
33NE 
 
171 
 
1525 
 
2045 GBOFG 
 
N18W N84W N20E N21E N42W 
 
17NE 83SW 75SE BSNW f!IJSW 
 
810" 
 
6" 
 
D 
 
24-36" 
 
5" 
 
12" 
 
D 
 
18" 
 
24" 
 
D 
 
OPEN 
OPEN OPEN 
 
171 
 
1525 
 
2045 GBQFG 
 
N70E 67NW 
 
171 
 
1525 
 
2045 GBQFG 
 
N21W 85SW 
 
172 
 
1520 
 
2070 GBOFG N40W 
 
23NE 
 
173 
 
1325 
 
2030 
 
SSG 
 
N50E 
 
4BSE 
 
173 
 
1325 
 
2030 SSG 
 
N80E 63NW N40W 72fNV 
 
.5-1 " 10" 
 
so 
 
OPEN 
 
1" 
 
4-6" 
 
D 
 
OPEN 
 
173 
 
1325 
 
2030 SSG 
 
VQ 
 
NOW 36E 
 
2-5" 
 
96" 
 
174 
 
1555 
 
2070 SSG 
 
N40W 
 
40NE 
 
175 
 
1570 
 
1685 BQFG N30W 
 
65NE 
 
176 
 
1770 
 
1860 
 
SSG 
 
N46E 
 
43SE 
 
N19E 83SE 
 
36'' CLOSED 
 
176 
 
1770 
 
1860 SSG 
 
NJSE 
 
40SE 
 
N60W 82SW 
 
12" 
 
2-6'' CLOSED 
 
176 
 
1770 
 
1860 SSG 
 
N60E SONW 
 
177 
 
1640 
 
1470 BOFG N78W 
 
26NE 
 
178 
 
1850 
 
1560 GBOFG N43W 
 
44NE 
 
179 
 
1905 
 
1595 OMS 
 
N71W 
 
64NE 
 
N12W 85SW 
 
179 
 
1905 
 
1595 OMS 
 
N84E 
 
JSNW 
 
N55W 90E 
 
180 
 
1910 
 
1745 BOFG N31W 
 
43NE 
 
181 
 
1615 
 
1285 FCR 
 
N14E 88NW 
 
4" CLOSED 
 
181 
 
1615 
 
1285 FCR 
 
N32W 59SW 
 
181 
 
1615 
 
1285 FCR 
 
N35E 41NW 
 
182 
 
1770 
 
1285 GBOFG N62W 
 
58NE 
 
183 
 
1920 
 
1325 SSG 
 
N50W 
 
42NE 
 
N60W 62SW 
 
183 
 
1920 
 
1325 SSG 
 
N16W 42SW 
 
48" 
 
D 
 
FE 
 
183 
 
1920 
 
1325 SSG 
 
183 
 
1920 
 
1325 SSG 
 
N40E 40NW NOE 39W 
 
8" 
 
36" CLOSED 
 
6" 
 
18" 
 
D 
 
OPEN 
 
184 
 
1815 
 
1140 FCR 
 
N10E 
 
90W 
 
N70W SOSW 
 
184 
 
1815 
 
1140 FCR 
 
N55W 78NE 
 
118" 60" CLOSED 
 
185 
 
1885 
 
1085 OTE 
 
N78E 
 
23SE 
 
NOE 90W 
 
.5" 
 
36" 
 
D 
 
OPEN 
 
185 
 
1885 
 
1085 OTE 
 
N47E 
 
28SE 
 
N68W B6SW 
 
2" 
 
6" 
 
D 
 
OPEN 
 
185 
 
1885 
 
1085 OTE 
 
N30W 71SW 
 
3" 
 
5" 
 
D 
 
OPEN 
 
23 
 
 Map Sta 
186 186 187 187 187 188 189 1SO 191 192 193 193 194 195 195 196 197 197 198 199 200 201 202 203 204 204 204 204 205 206 206 207 207 207 207 208 208 208 209 209 210 211 211 212 213 213 213 213 213 214 214 214 215 215 216 216 217 217 218 218 219 219 220 221 222 222 222 223 224 224 
 
Eastlng 
1885 1885 1900 1900 1900 1900 1905 1835 1910 1215 1180 1180 1715 1600 1600 1595 
1395 
1395 
905 
1100 1400 1215 1150 715 670 670 670 670 850 1250 1250 1255 1255 1255 1255 1240 1240 1240 1365 1365 1385 1375 1375 1410 1000 1000 1000 1000 1000 
960 
960 
960 
930 930 920 920 920 920 915 915 1055 1055 1035 1065 1070 1070 1070 1080 1080 1080 
 
Southlng RxTyp 
1100 QTE 1100 QTE 1140 GQMS 1140 GQMS 1140 GQMS 1110 GQMS 1065 QTE 990 GSS 835 GBQFG 855 SSG 
815 GSS 815 GSS 435 BQFG 510 QMS 510 QMS 560 BQFG 1115 BQFG 1115 BQFG 315 BQFG 1285 FCR 1510 GBQFG 1215 BQFG 1145 BQFG 1060 SSG 1025 SBQFG 1025 SBQFG 1025 SBQFG 1025 SBQFG 825 GSS 770 SSG 770 SSG 755 SSG 755 SSG 755 SSG 755 SSG 780 SSG 780 SSG 780 SSG 740 SSG 740 SSG 1015 SBQFG 945 GBQFG 945 GBQFG 980 QTE 
1015 SSG 1015 SSG 1015 SSG 1015 SSG 1015 SSG 1025 QTE 1025 QTE 1025 SBQFG 1035 QTE 1035 QTE 1040 SBQFG 1040 SSG 1040 QTE 1040 QTE 1040 SBQFG 1040 SSG 995 GBQFG 
995 SSG 950 QTE 935 GKQMS 930 QTE 930 QTE 930 QTE 930 GKQMS 
950 FCR 950 FCR 
 
Fol Trand 
N85W N68W N15W N65E NSOE N85W N58W 
N56E N86W N27E 
N35E 
N8E N84W N60E 
N10E 
N70W N45E N20E N60E N70E 
N72W N85W 
N78E 
N50E N60E 
N88E 
N75E N60W 
N79E N40W N13E N82E 
N75W NBOE N85W N49E 
N40E N35E N64E 
N70E N48E N45E N58E N85E NBOW N85W 
NBOW N75W 
 
Fol Dip 
36NE 21NE 
35SI/V 
43NW 11N 23NE 69NE 
28NW 32NE 28NW 
30NW 
23NW 29NE 15NW 
BONW 
54NE 28NW 41SE 46NW 44NW 
79SI/V 23NE 
59NW 
23NW 30NW 
66NW 
26NW 12NE 
32NW 2NE 27NW 37NW 
40NE 35NW 51NE 20NW 
4SE 43NW 29NW 
27NW 38NW 30NW 35NW 
60NW 
45NE 35NE 
30NE 60NE 
 
Joints Trend Dip Plunga Spaca Persist Dllat. 
 
Weatll. 
 
NBOIN 87SI/V N5W 77NE 
 
5" 2" 1" 
 
D OPEN D OPEN 
 
N12E 20SE NOW 62E N10W 87NE 
N34E 56SE N10E 60SE 
 
1" 
 
1" 
 
D 
 
FE 
 
.5-1" 10-12" D OPEN 
 
N13E 79NW 
 
12-24" 36-48" D OPEN 
 
N25E 60SE N5E 71NW N40E 81SE N48W 75SI/V 
 
N74E 89NW N10W 88NE N35E 76NW N35W 80SI/V N10E 84SE N15W 81NE N60W SOE 
N55E sow 
N15E 76SE N60E 18SE N50W 76NE N15E 62SE N55W SOE 
N45E sow 
 
FOLD 
 
N70E 70NW 
N60E sow 
N70W BONE NOW SOE N85E N30E 85NW NSOE 65N 
 
13SI/V 
 
N25E 76SE N85E BOSE 
 
1" 12" 
 
D OPEN 
 
1.5" 18" 
 
D OPEN 
 
.5" 6'' CLOSED 
 
.5" 4-6" CLOSED 
 
4" 12-18" D OPEN 
 
12" 18" 
 
D 
 
OPEN 
 
3" 40" CLOSED 
 
.5-1" 12" CLOSED 
 
CLOSED 
 
1" 
 
CLOSED 
 
1.5" 1" 1" 12" 
 
D OPEN D OPEN 
 
1-3" 24-36" D OPEN 
 
6'' 
 
2" 
 
D OAL,OPE 
 
1-2" >120" CLOSED 16" 4" CLOSED 
 
1-6" >120" CLOSED 1-8" 1-6'' CLOSED 
 
N20E 87NW 
 
FOLD N20E 
 
17NE 
 
N20W 75NE N65E 56NW 
N25W BOSI/V N40E 75SE N20W 60SI/V 
NOE sow 
N20W 71SI/V N70E 38SE 
 
8" CLOSED MN 1" >48" CLOSED 8'' 12-24" CLOSED 
36" CLOSED 
 
24 
 
 Map Sta 225 225 226 226 227 227 228 228 228 228 229 230 231 232 233 233 233 234 235 236 236 237 237 237 238 238 239 239 240 241 242 243 243 243 244 244 244 244 244 244 244 245 245 245 245 246 247 247 247 248 248 249 249 249 250 250 250 250 250 250 250 250 251 252 252 252 252 252 253 254 
 
Eastlng 1160 1160 1145 1145 895 895 985 985 985 985 875 825 805 1175 1160 1160 1160 1135 1150 1125 1125 1160 1160 1160 1670 1670 1635 1635 1595 1595 1540 1550 1550 1550 1220 1220 1220 1220 1220 1220 1220 1190 1190 1190 1190 1200 1230 1230 1230 1150 1150 1300 1300 1300 1435 1435 1435 1435 1435 1435 1435 1435 1550 1735 1735 1735 1735 1735 240 1005 
 
Southlng Rx Typ Fol Trend 
 
995 
 
QTE 
 
NBOW 
 
995 
 
QTE 
 
990 TEIFC NBOW 
 
990 TEIFCR 
 
1045 OTE 
 
N84E 
 
1045 QTE 
 
N70E 
 
1025 QTE 
 
N85W 
 
1025 OTE 
 
1025 SBQFG 
 
1025 SBOFG 
 
1055 SBQFG N64E 
 
1070 GBQFG N79E 
 
1065 SBQFG N55E 
 
905 
 
FCR 
 
N75E 
 
915 
 
SSG 
 
N85E 
 
915 
 
SSG 
 
915 
 
SSG 
 
915 
 
FCR 
 
N74E 
 
910 
 
SSG 
 
N62E 
 
920 
 
FCR 
 
N69E 
 
920 
 
FCR 
 
900 
 
QTE 
 
N82E 
 
900 
 
QTE 
 
900 
 
QTE 
 
925 GOMS N85E 
 
925 SBOFG N85E 
 
945 
 
QTE 
 
N64W 
 
945 
 
QTE 
 
N50E 
 
970 
 
QTE 
 
N73E 
 
1010 OTE 
 
N90E 
 
1020 GQMS N90E 
 
1015 OTE 
 
N88E 
 
1015 QTE 
 
1015 QTE 
 
1000 QTE 
 
N40E 
 
1000 SBQFG N70E 
 
1000 SBQFG 
 
1000 SBOFG N75W 
 
1000 SBQFG 
 
1000 SSG 
 
N90W 
 
1000 SSG 
 
N65E 
 
975 
 
QTE 
 
N75W 
 
975 
 
OTE 
 
975 
 
QTE 
 
975 
 
SSG 
 
N74W 
 
995 GBQFG N75E 
 
980 
 
QTE 
 
N75E 
 
980 
 
QTE 
 
N70E 
 
980 
 
QTE 
 
N77E 
 
975 
 
QTE 
 
N70W 
 
975 
 
QTE 
 
990 
 
QTE 
 
N88W 
 
990 
 
QTE 
 
990 
 
QTE 
 
995 
 
FCR 
 
995 
 
OTE 
 
N30W 
 
995 
 
QTE 
 
995 
 
QTE 
 
995 
 
QTE 
 
995 
 
OTE 
 
N70W 
 
995 
 
OTE 
 
NOE 
 
995 
 
OTE 
 
975 
 
OTE 
 
N84E 
 
1050 QTE 
 
N45W 
 
1050 QTE 
 
N55W 
 
1050 QTE 
 
1050 OTE 
 
1050 SBQFG N60W 
 
1285 QTE 
 
950 
 
SSG 
 
N63E 
 
Fol Dip 37NE 
19NE 
42NW 46NW 26NE 
42NW 41NW 50NW 62NW 48NW 
48NW 37NW 44NW 
36NW 
82NW 40NW 21NE 30NW 44NW 
21N 32N 37NW 
54NW 37NW 
32NE 
22N 52NW 52NE 
55NE 38NW 25NW 18NW 27NW 41NE 
30NE 
18SW 
31NE BOW 
26NW 44NE 30NE 
37NE 
60NW 
 
FOLD FAULT 
 
Trend N50W N45E N5W N45E 
 
Dip 75SW 82NW 75SW 77NW 
 
Plunge 
 
NrNV N60W N85E N25W 
 
90E 75NE 60SE 70NE 
 
N5W 85NE N26E 49SE NBOW 36SW 
 
N30W 71SW 
 
N34E 86NW 
 
N36E 85SE 
 
N87W 50SW 
 
N2fNV 75SW 
 
N90E 
 
30E 
 
N10E N38W N42E N80W 
 
82SE 88NE 61SE 70SW 
 
N55W NOE N35E N60E 
 
67NE 87W 77SE 75NW 
 
N55E 75SE N85W 80SW N55W 80SW 
 
N30E N60E N45W N30W N60E N60E N50W N10E N80E N20E N85W N60E N30W N65E 
 
90NW 84SE BONE 45SW 65SE 77SE 68SW 85NW 70NW 86NW 89NE 85NW 83NE 82SE 
 
N82W 72SW 
 
N30E N60W N10E N90W 
 
87NW 83SW 85NW 89S 
 
Joints Space Persist 
4-6" 
 
Dllal 
 
12" 
 
8" 
 
D 
 
4" 96-108" 
 
1-4" 4" 1-2"' 1" 
 
12" 4" 24-36'' 12" 
 
D 
CLOSED CLOSED 
 
12" 8-12" 
 
48" CLOSED 36" CLOSED 
 
7" 6" 
8-10" 
14" 
 
CLOSED CLOSED 24" 
 
6'' 
 
4-6" 
 
D 
 
4-8" 12-18" 
 
D 
 
1-4" 12-18" 
 
D 
 
3" 
 
8" 
 
D 
 
1" 
 
36'' 
 
D 
 
4" 6-12" 4-6" 
 
24-36" CLOSED 18" CLOSED 12" CLOSED 
 
2" 4-24" 1-2" 12" 6-8" 
4" 3-4" 
1" 
 
18-24" 24-36" 
8" 24" 12" 48-60" 8" 12-24" 
 
CLOSED CLOSED CLOSED CLOSED CLOSED CLOSED CLOSED CLOSED 
 
1" 36-48" 
 
D 
 
2" 
 
36'' 
 
D 
 
4" 
 
12" 
 
D 
 
Weath. OPEN OPEN 
FE OPEN OPEN 
MN OPEN 
KAOL OPEN 
MN 
 
25 
 
 Map Sta 255 256 256 257 257 257 257 257 258 258 258 259 259 260 261 261 262 262 263 263 263 264 265 266 267 268 269 270 271 272 273 273 274 275 276 277 278 279 279 279 279 280 281 281 282 282 283 284 285 286 287 288 289 290 290 290 291 291 291 291 292 293 293 294 294 295 296 297 298 298 
 
Eastlng 995 995 995 990 990 990 990 990 980 980 980 950 950 935 920 920 895 895 885 885 885 870 840 920 940 995 1025 1050 1045 1080 1110 1110 1140 1190 1170 1055 1230 1250 1250 1250 1250 1265 1280 1280 1300 1300 1310 1315 1320 1325 1335 1430 1430 1405 1405 1405 1400 1400 1400 1400 1510 1520 1520 1650 1650 1645 
 
Southlng Rx Typ Fol Trend 
 
955 GKQMS N75E 
 
960 
 
QTE 
 
N67E 
 
960 
 
QTE 
 
955 GKQMS N90W 
 
955 GKQMS N65E 
 
955 GKQMS 
 
955 
 
QTE 
 
N90W 
 
955 
 
QTE 
 
N65E 
 
965 
 
QTE 
 
N80E 
 
965 
 
QTE 
 
N85E 
 
965 
 
OTE 
 
N80E 
 
970 GKQMS N70E 
 
970 GKQMS N90E 
 
975 
 
QTE 
 
N85E 
 
985 
 
BQFG 
 
N55E 
 
965 TEIFC N40E 
 
990 TEIFC N85E 
 
990 TEIFC N50E 
 
995 CRIQT N75E 
 
995 CR/QTE 
 
995 CRIQTE 
 
1000 CRIQT N70E 
 
1015 OMS 
 
N37E 
 
975 CR/QT N60E 
 
970 SBQFG N70E 
 
950 
 
SSG 
 
N64E 
 
945 
 
QTE 
 
N74E 
 
940 GKQMS N54E 
 
930 
 
FCR 
 
N80E 
 
930 CRIQT N75W 
 
910 
 
BQFG 
 
N30E 
 
910 BQFG 
 
900 
 
FCR 
 
N82W 
 
890 
 
QTE 
 
905 
 
TEIFC 
 
N80E 
 
945 GKQMS N65E 
 
905 
 
QTE 
 
N80E 
 
905 
 
QTE 
 
N86W 
 
905 
 
QTE 
 
905 
 
QTE 
 
905 
 
QTE 
 
N86E 
 
900 TEIFC N78E 
 
910 
 
QTE 
 
N60E 
 
910 
 
QTE 
 
N85E 
 
910 GKQMS N90E 
 
910 
 
QTE 
 
N80W 
 
910 
 
QTE 
 
N90W 
 
910 SBQFG N75E 
 
910 
 
QTE 
 
N80W 
 
910 
 
QTE 
 
N65W 
 
915 SBQFG N60W 
 
920 
 
SSG 
 
N65E 
 
945 BQFG 
 
N5E 
 
900 
 
QTE 
 
N75E 
 
900 
 
QTE 
 
900 
 
QTE 
 
910 GBQFG N80E 
 
910 GBQFG N55W 
 
910 GBQFG N90W 
 
910 
 
QTE 
 
N70E 
 
620 
 
BQFG 
 
N22E 
 
835 
 
OTE 
 
N60E 
 
835 
 
QTE 
 
760 GBQFG N74E 
 
760 
 
QTE 
 
N85W 
 
770 BQFG N35W 
 
1580 1650 1650 
 
625 
 
SSG 
 
N67W 
 
BOO GBQFG N80E 
 
BOO GBQFG 
 
Fol Dip 40NW 36NW 
45N 71NW 
BON 37NW 66NW 50NW 40NW 63NW 
47N 46NW 48NW 46NW 69NW 46NW 60NW 
56NW 35NW 37NW 35NW 27NW 42NW 46NW 45NW 50NE 45NW 
60NE 
62NW 76NW 48NW 85NE 
76SE 59NW 90W 90W 
49N 90E 49N 41NW 45NE 74NE 50NE 25NW 49SE 27NW 
44NW 38NE 45N 32NW 25NW 18NW 
35NW 25NE 38NE 
44NE 25NW 
 
Joints Trend Dip Plunge Space Persist Dllat 
 
Weath. 
 
NOE N80E N2E N40E N70W N5W N45W N1W N65W N5W 
 
85W 72SE 35SE 51SE 90E BONE 30SW 90E 52SW 74NE 
 
2" 
 
12'' CLOSED 
 
.5" 6-12" CLOSED 
 
12" 
 
36" CLOSED 
 
1" 
 
12" CLOSED 
 
1-3" 
 
48" 
 
D 
 
OPEN 
 
12" 
 
D 
 
MN,FE 
 
25" 25-1" 
 
4" CLOSED 4" CLOSED 
 
N40E 83SE 
 
2-4" 
 
24" CLOSED 
 
N15E 83SE N5W 75NE N70E 81NW 
 
1" 12-18" CLOSED 
 
1-2" 
 
24" 
 
0 
 
OPEN 
 
2" 
 
NOW 90E N90W 88S 
 
N50W N15E N5W N75E N50W 
 
40SW 60SE 62SW 35NW 68NE 
 
1" 
 
12" 
 
5" 
 
D 
 
OPEN 
 
D 
 
OPEN 
 
2-4" 6-18" 
.5" 4" 
 
12" 6" 12-24" 24-36" 
 
D CLOSED CLOSED CLOSED 
 
SI02 
 
N30E 80NW 
 
N85E N40W N10E N5E N30W N30E N82E 
 
65SE 67NE 86NW 84NW 90E 88NW 88NW 
 
N25E BOSE NBOW 86NE 
 
N55E 87SE 
 
N45W 82NE N80E 75SE 
 
12" 
 
46" CLOSED 
 
.5" 
2-4" 24" 3-12" 1-2" 
 
12" 
48-60'' 36'' 120'' 
>120" 
 
SD 
D 0 
CLOSED CLOSED CLOSED CLOSED 
 
OPEN OPEN OPEN 
 
4" 36-48" CLOSED 
 
4" 
 
36" CLOSED 
 
2" 
 
36" CLOSED 
 
4" 
 
>12" CLOSED 
 
1" 
 
46" CLOSED 
 
26 
 
 Map Sta 
298 298 299 
300 
301 302 278 1198 1338 1548 1668 1728 2088 2208 2209 2209 
 
Eastlng 
1650 1650 1650 1655 1680 1725 50 1660 1670 1320 1280 1425 1315 1035 1035 1035 
 
Southlng Rx Typ 
800 GBOFG 800 SSG 785 BOFG 765 QTE 745 OTE 740 QTE 0 GSS 815 OMS 925 QTE 90 BOFG 1890 8QFG 2070 BOFG 740 GBOFG 945 QTE 945 QTE 945 QTE 
 
Fol Trend 
N62W N45E N45W NB4W N5E N56E 
N65E N46E 
 
FoiDip 
2BNE 35NW 31NE 55NE 85SE 45NW 
50NW 51NW 
 
Trend Dip 
N10E 9fNI 
 
Plunge 
 
Joints Space Persist Dllat. 
1" 48-60" CLOSED 
 
Waath. 
 
N20E 80NW N75E 70NW N40E 30SE 
 
4-6'' 12-24" CLOSED .5" 4-6'' CLOSED 4" 10-12" CLOSED MN 
 
27 
 
   DEPARTMENT OF NATURAL RESOURCES ENVIRONMENTAL PROTECTION DIVISION GEORGIA GEOLOGIC SURVEY 
 
INFORMATION CIRCULAR 98 PLATE 1 
 
GEOLOGIC 
UNITED STATES DEPARTMENT OF THE INTERIOR 
GEOLOGICAL SURVEY 
 
MAP 
 
OF 
 
THE 
 
BARNESVILLE HYDROGEOLOGIC 
STATE OF GEORGIA 
DEPARTME NT OF NATURAL RESOURCES GEOLOGIC AN D WATER RESOURCES DI VI SION 
 
RESEARCH SITE. 
BARNESVILLE QUADRANGLE 
GE ORG I A 7.5 MINUTE SERI ES (TOPOGRAPHIC) 
SW/4 BA RNESVl LL 15 QUAORAN G! E 
 
LAMAR 
 
COUNTY. 
 
GEORGIA 
 
{ ]' 
 
/ 
~ / 
 
I 
 
EXPLANATION (no stratigraphic order implied) 
Units north of the Towaliga Fault Zone ~ Graphite-quartz-muscovite-sillimanite schist with interlayers ofporphyroclastic ~ biotite-quartz-feldspar gneiss. 
r::=--, Sheared graphite-quartz-muscovite-sillimanite schist and chlorite-quartz- 
~ muscovite schist with infolded biotite-quartz-feldspar gneiss and isolated pods of quartz-garnet granofels. Abundant quartz  sillimanite veins concordant and discordant to foliation. 
~ Intercalated gondite, biotite gneiss, amphibolite and sillimanite-quartz~ muscovite schist. ~ Porphyroclastic and granitic biotite-quartz-feldspar gneiss with local ~ discontinuous interlayers of amphibolite and quartz-muscovite schist  
sillimanite. 
r::::::1 Migmitized porphyroclastic and granitic biotite-quartz-feldspar gneiss with 
~ local discontinuous layers of quartz-muscovite schist  sillimanite. 
Units within and south of the Towaliga Fault Zone 
~ Feldspathic, micaceous quartzite, locally mylonitic. 
E J Sheared biotite-feldspar-quartz-muscovite schist kyanite  garnet. 
~ Sheared, silicified garnet-muscovite-biotite-quartz-feldspar gneiss, ranging ~ from augen gneiss to blasto- and ultramylonite. 
~ Cataclasite, flinty crush rock. 
Units south of the Towaliga Fault Zone ~ Garnetiferous muscovite-biotite-quartz-feldspar gneiss with local interlayers ~ of quartz-muscovite schist, sheared schist and lenses of cataclasite. 
~ Cataclasite, flinty crush rock. 
Strike and dip of foliation 
, _ Trend and plunge of lineation 
Trend, plunge and dip of axial plane of minor folds 
Contact 
Approximate contact 
Inferred thrust fault 
Towaliga Fault 
 
Mapped ed1ted and publ1shed by t he Geolog1cal Survey 
Control by USGS NOS/NOAA and Georg a Godet1c Survelo 
Topog raphy by p hotogrammetr1c met hod s f om aer1al ohotogra ph s t ;J ken 19 7 3 F1e1d checked 197 3 
PrO I" tfo n 2nd 10 000 foo t gnd t ck C.eo g ~::l coo dm ate 
~ystE: m .,.~~ t zo1~> ' tr a J'S>Brs e Mt Ca'o1, Qr ](' l e>r<> Jj \1\fersa l T 1~n , ~ " '"e "il C'\ illur g'd ' <. k$ 
10 < 6 snovm n btl,e 19 2 7 '~ onh Af "'"a" dawno 
Ftn < f!.-d rlash ed ltne~ mdJc ch: selec so te'l ce ana ft e o I nes wl ere gent rall y v o 1b eon aena l pho tog~a phs h 1s mformat1on 1s. uncheckeC P ea tlr'l' tndKates. <:~reas tn wh1c h or ly l and matH ou tld1ngs an;! sh own 
 
~ 
 
W 
"II 
 
s 
 
I 
I 
 
l "3 
 
1 '7 r~ " 
 
\' 
 
UTiol Gft!D AND CJ ~ MAC Nt llC NORTH (, ECUN/11 ON A.f CPHH< ; F SHEn 
 
I 
E- - 
 
4 149 I NW 
 
~E~ - 
 
SCALE 1 24 000 
 
~ 
 
0 
 
::::c-.::=E~ 3_..:-..E"' - 3:~ 
 
- "'"--~-==== 
 
--=- ,QOO 
 
0 
 
1000 
 
2000 
 
3000 
 
a::::EC:E ;r:::___----=::;:;.:.=---====:1-- - f - 
 
4000 
 
5000 
 
::r==: - ---'- - 
 
61)00 
 
E "'L ~J :f " 3-::--r--c"r::- ~ -::0::r= 
 
r (,N ro 1 ~ I NTE RVAl 10 fEET 
Nllll fJ"At FCI J~1 1C Vi f, TI C AL 'l' f U '-1 G F 19~9 
 
7000 FEET 
 
I MILE 
 
TH IS MAP COM PI I [~ WI TH NATIONAL MAP ACCUR ACY STANDARDS FOR SALE BY U S G01 OG!CAL SURVEY RESTON VI RGINIA 22092 A FOLDER DESCRIBING TOPOSRAPrHr: MAPS AN D SYMBOLS IS AVAILABLE ON REQUEST 
 
"'-, ,- 
 
. ' 
 
' 
 
> { G' OH, A 
 
--J 
QUAD RANGL! LOC ~ TIO N 
 
ROAD CLASSIFICATION 
 
Pnmary h1ghway hard surface 
 
L1ght duty road hard or Hnp rov ed su rface -===---= =- 
 
Secon d a r ~h1g h way 
 
nard surface 
 
-.. --= =-- unm pr ov ed road 
 
G 0 c~ In ers tal e Route 
 
u s Route 
 
Stat<> Ro ~.m 
 
BARNES VILLE, GA 
SW 4 B ~ RN:SV IL L E S QUADRAIK.LE. 
N3300 ~ W8407 517 5 
1973 
AM'> 4 150 ll SW SERIES V8 45 
 
N 
Study 
/Area 
 
GEORGIA 
 
 DEPARTMENT OF NATURAL RESOURCES ENVIRONMENTAL PROTECTION DIVISION GEORGIA GEOLOGIC SURVEY 
 
JOINT SET MAP BARNESVILLE HYDROGEOLOGIC RESEARCH SITE 
LAMAR COUNTY. GEORGIA 
 
INFORMATION CIRCULAR 98 PLATE 2 
 
UNITED STATES DEPARTMENT OF THE INTERIOR 
GEOLOGICAL SURVEY 
 
27 
 
Strike and d1p of j01nt 
 
Strike and dip of vert1cal JOint 
 
Rose diagrams summanz1ng strike of JOint sets for a given area 
0'-----~~2 
n=11 
 
STATE OF GEORGIA 
DEPARTMENT OF NATURAL RESOURCES GEOLOGIC AND WATER RESOURCES DIVISION 
 
BARNESVILLE QUADRANGLE 
GEORGIA 7 5 MINUTE SERIES (TOPOGRAPHIC) 
SW/4 BARNESVILLE 15 QUADRANGlE 
 
Mapped ed1led and publiShed by the Geolog1cal Survey 
Control by USGS NOS/NOAA, and Georg1a Geodet1c Survey 
Topography by photogrammetr1c methods from aenal photographs taken 1973 Fteld checked 1973 
PrOJPt:t ton and 10,000 foot gnd ttcks Georgia coordmate system west zone (transverse Mercator) 
1000 metre Umversal Transver se Mercator gnd t1cks 
zone 16 shown 1n blue 1927 North Amencan datum 
F1ne red dashed lmes 1nd1cate selected lence and f1eld lmes where generally vts1ble on aenal photographs Th1s mforrnatton 1s unchecked 
Red tnt 1nd1cates areas tn whtch only land mark buddtngs are shown 
 
* 
UTM GRID MW 1973 MAGNETIC NORTH DECLINATION AT CENTER OF SHEET 
I 
 
41'>9 I NW 
SCALE I 24 000 
MILE 
 
CONTOUR INTERVAL 10 FEET NATIONAL GEODETIC VERTICAL DATUM OF 1929 
 
KILOMETR[ 
 
THIS MAP COMPUES WITH NATIONAL MAP ACCURACY STANDARDS FOR SALE BY U S GEOLOGICAl SURVEY RESTON VIRGINtA 22092 A FOLDER DESCRIBING TOPOGRAPHIC MAPS AND SYMBOLS IS AVAILABLE ON REQUEST 
 
~ ~EOilGIA 
'"-- -,J...j 
QUADRANGLE LOCATION 
 
'67 
ROAD CLASSIFICATION 
 
Pnmary htghway hard surface 
 
Ltght duty road hard or 
Improved surface 
 
Secondary htghway 
 
ha rd surface 
 
-=~,_. Un1rnpto-1ed road 
 
0 Q Q Interstate Route 
 
U S Route 
 
State Route 
 
BARNESVILLE, GA. 
SW/4 BARNESVILLE 15 QUADRANGLE 
N3300 -W8407 5/7 5 
1973 
AMS 4150 II SW- SERJES 845 
 
 For convenience in selecting our reports from your bookshelves, they are color-keyed across the spine by subject as follows: 
 
Red Dk.Purple Maroon LtGreen Lt Blue Dk.Green Dk. Blue Olive 
Yellow 
Dk.Orange Brown Black Dk.Brown 
 
Valley and Ridge mapping and structural geology Piedmont and Blue Ridge mapping and structural geology Coastal Plain mapping and stratigraphy Paleontology Coastal Zone studies Geochemical and geophysical studies Hydrology Economic geology Mining directory Envaorunentalstudies Engineering studies Bibliographies and lists of publications Petroleum and natural gas Field trip guidebooks 
Collectionsofpape~ 
 
Colo~ have been selected at mndom, and will be augmented as new subjects are published. 
 
Editor: Melynda Lewis 
 
250/$2,688.00 
The ]')qJartment al Natural ReiiOUJ'Ces is an equal opportunity employer and offers all penon the opportunity to cxmpete and participate in each area of DNR employment regardless al race, color, religion, national origin, age, handicap, or other non-merit factors.