WELl. LOGS OF THE COASTAL PLAIN OF GEORGIA

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

2 330 GEORGIA GEOLOGICAL SURVEY BULLETIN 70 Summaryr. Residuum _...._......_.._..._. '25 25 Upper Eocene (Cooper marl).~...._ _.._ Upper Eocene (Barnwell formation) _.._...._.._.._._ Middle Eocene (Lisbon formation) _ _.._.._ Middle Eocene (Tallahatta formation) :..._ Potential Water-Bearing Zones: Remarks: Thickness ' ( f eet ) Limestone...._ _ Sand; medium to coarse-grained.. " _ Sand: fine to coarse-gralned. ~ _. ~..., _ Sand: fine to coarse-grained.,._., _ _--, _ Sand: fine to coarse-grained : ~...:......_......_ Limestones belonging to the Claiborne group are too dense and nonporous to constitute good water-bearing formations. The more productive water-bearing sands for the area lie below the total depth (319) penetrated by this well. Such aquifers are of Upper Cretaceous age.. Location:.4 mi. south of Pulaski-Bleckley County line. east side of U.S. Highway 26, Land Lot 306, 21st Land District Own er : No.1 E. H. Tripp Driller: Ainsworth, Inc. Drilled: October 1954 PULASKI COUNTY Well No. : GGS 472 Elev. : 280 Thickn ess. Dep th ( f eet) Residuum: Clay: mottled, very sandy, limonitic, and fragments of residual limestone (at depth)....._.: Rotalia mexicana var. at Oligocene (Undifferentiated): Limestone: yellow, nodular, ' somewhat.iron-stained, leached, cherty, f ossilif erous (echinoid and frequent bryozoan reo' mains, and some Foraminifera) c.....;...._.._.. 20 Asterigerina sp., Eponidee byram en8is ~at

3 >, WELL LOGS OF THE COASTAL PLAIN OF GEORGIA Upper Eocene: Jackson Group: Cooper Marl: ii.,,.. Limestone: cream, granular, loosely consolidated (gra'y; dense, somewhat saccha roidal, sandy, coarsely glauconitic" at depth), fossiliferous (echi noid and bryozoan remains,jo so tracods, and Foraminifera) ~ _J Thickn e s s (fee t ).' 15 " "331 ( f eet) Bulimina [acksonensis, Uvigerina ja,cksonen sis, U,vigerina topilensis, S piroplectammina. mississippiensis va~., Cibicides lobatulu8 at ' Indurated, sand: fine-grained, angular" f ossiliferous (casts and molds of megafossils)._....., Barnwell Formation: Marl: gray, silty, somewh at indurated, car bonaceous, fossiliferous (echinoid and bryozoan remains, Ostracods and Foraminifera) _... _ N onion advena, Valvttlineria [aeksonenei» at Limestone: gray, dense, coarsely glauconitic, san dy, fossiliferous (casts and molds of megafossils, echinoid and abundant bryozoan remains)....._._.._.. Limestone: cream'-p0t::.0us, coarsely glauconitlcc- s~n~ie r with depth, fos siliferous (echinoid and abundant bryozoan remains, and Foraminifera),..._..... _. Operculina mariannensis, L epidocyelina ocalana at Asteroeyclina na8sauensis, Camerina st riatoreticulata at Middle Eocene: Claiborne Group: Lisbon Formation: Marl: gray to dark-green, somewhat indurated, carbonaceous, micaceous, glauconitic (finely disseminated); interbedded limestone, gray, dense, san dy, glauconitic (finely disseminated); sand, fine to coarse-grained, angular, fo ssiliferous (a coquina) _ _ Ma croshells prominent at N onion. advena, Gryoidina 801danii var., Cibicides danvillensis, Cibicid es americanus var., Cibieide8 pseudoungerianu8 var. lisbonensis, Cibicides mis8issippiensis, Cibioides westi at Pink sericitic clay prominent at

4 332 GEORGIA GEOLOGICAL SURVEY BULLETIN 70 Tallahatta Formation : Marl: dark-~e~~, sa ndy, coarsely glauconitic, pyritiferous, fossiliferous (rilacroshells, Ostracods and Foraminifera) Cibicideg blanpi~(ii, Cibicides tallahattensis at Asterocyclina m'onticellensis, Cibicides pseudoungerianu8 var, lisbonensis, Cibicides blanpiedi, Cibicides tallahattensi8 at \ -, Thicknes s (teet) 70 (fee t) Upper Cretaceous: Post-Tuscaloosa ( Undiffer ent iat ed) : Sand: fine to medium-grained, angular, sideritic, lignitic; interbedded clay, black, carbonaceous, micaceous Sideritic nod ules abundant at Sand: coarse-grained, angular, arkosic, 'sider ttic, pyrififerous, lignitic; interbedded kaolin, white to ' red (mottled), micaceous _... ' Pi nk kaolin prominent at Clay: dark-gray to black, micaceous, carbonaceous _ Limestone, gray, den se, crystalline; sandy, glauconit ic; macroshells prominent at Clay: dark-brown, 'silty, carbonaceous, highly mica~eou{~ :~ Sand : coarse-grained, angular, arkosic; inter bedded clay, dark-brown, silty, car bonaceous, highly micaceous. _, Clay: dark-brown, silty, carbonaceous, very micaceous, fossiliferous (casts of megafossils) ; sa nd..... Sand: coarse-grained, angular, arkosic; in terbedded clay, dark-brown, silty, carbonaceous, _very micaceous.,!_. _, , , ,370 In Tus caloosa Formation: Sand: fine to coarse-grained, arkosic, rather massive; interbedded clay, yellowish-green, sandy, somewhat carbonaceous, micaceous... :... _ Sand : f ine to coarse-grained, angular, arkosic; interbedded' clay, yellowish-green, red to purple at depth, somewhat carbonaceous, sandy, micaceous.._. In Lower Cretaceous (?) Sand: very coarse-grained, angular, extremely arkosic; interbedded clay, olive-green to tan to.br ick-red, very micaceous, sa ndy.. ~.._:.. ~ ( , , ,487 11," ~ ; -

5 ',. ~ : WELL LOGS OF THE COASTAL PLAIN OF GEORGIA Summary: 'I'h tc knees (feet ) Residuum.._..._ Oligocene (undifferentiated).._. ~ _..._. 20 Upper Eocene (Cooper marl)..._....' Upper Eocene (Barnwell formation)..._..._ Middle Eocene (Lisbon formation); ~ Middle Eocene (Tallahatta formation)._...~.:....._...._. 70 Upper Cretaceous (post-tuscaloosa, undifferentiated) _ In Upper Cretaceous (Tuscaloosa formation)..._ In Lower Cret aceous (?).. :._...~ ~ ,370 2,160 22,488 Potential Water-Bearing Zones: Limestone._.._._._ Sand: coarse-grained.,...._ Sand: coarse-grained Sand: fine, to coarse-grained..,.... ~ " --_-_-- --~ ,150 1,510 Location: 0.9 mi. east of road intersection in Georgetown, 0.4 mi. east of junction of Highways 27 and 50, north side of Highway 50 at school house Owner: No. 1 Kaigler School.. Driller: Gray Artesian Well Company Drilled: May 1955 QUITMAN COUNTY. Well No.: GGS 436 Elev.: Thickness Pliocene to Recent (Undifferentiated):.Clay: mottled, sandy ;..,..., Sand : fine to medium-grained, coarser-grained at depth, '...a ngula r i some clay, as above..._ t... r '.. Sand: fine to coarse-grained, angular; some clay, tan, sandy, micaceous ~ _ Gravel: pea-size grains, subrounded _..._...._ 5 56 Upper Cretaceous: Providence Sand: Marl: dark bluish-gray, sandy, micaceous, fossiliferous at depth (macroshells, Ostracods' and Foraminifera) _ Anomalina pseudupapilloso at " "This well report edly penetrated the Ba sement complex. Samples in our collection reached a total de pt h of 2488,. 95

WELl. LOGS OF THE COASTAL PLAIN OF GEORGIA

GEORGIA STATE DIVISION OF CONSERVATION DEPARTMENT OF MINES. MINING AND GEOLOGY GARLAND PEYTON. Director THE GEOLOGICAL SURVEY Bulletin Number 70 WELl. LOGS OF THE COASTAL PLAIN OF GEORGIA by Stephen M.