LOGS OF SELECTED WELLS IN THE COASTAL PLAINS OF GEORGIA

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1 GEORGIA S'rATE DIVISION OF CONSERVATION DEPARTMENT OF MINES, MINING AND GEOLOGY GARLAND PEYTON, Director THE GEOLOGICAL SURVEY Bulletin Number 74 V,/; LOGS OF SELECTED WELLS IN THE COASTAL PLAINS OF GEORGIA by Esther R. and Paul L. Applin ATLANTA 1964

2 po q LOGS OF SELECTEI? WELLS IN THE COASTAL PLAIN OF GEORGIA T.D. Descripti on Sandstone, very fine grained, slightly glauconitic (fine-grained glauconite), is about 80 percept of the sample. About 20 percent of the sample is composed of small chalky fragments, much of which is probably worn and broken fossil debris that was irregularly scattered in the sandstone. Bryozoan fragments are common. Sandstone, grayish-tan, very fine grained, calcitic, slightly glauconitic, lik e sample at 315 ft.; a few chalky fragments are present. Sandstone, highly cal careous, very fine grained, slightly glauconitic. Many fragments of chalky, glauconitic limestone contain traces and fragments of fossils that indicate the material is probably caving from higher levels. Limestone, white, chalky, glauconitic, containing many fragments of Opcrculinaidcs sp., Camerina sp., L epidocyclina (Polylepidina) antillea, and Discocyclina flintensis. Limestone, light bluish-gray, hard, dense, containing small scat: tered particles of glauconite. Like sample at 365 ft. Limestone, light-gray, moderately hard, sandy, glauconitic, (finegrained glauconite); no indigenous fossils. DE CATUR COUNTY* Owner Oper ator : U. S. (War Department) ' Bainbr idge Basic 'F lying School Well 1 Landowner:, Location: ' 6,mi. northwest of Bainbridge, Ga.; and about '3/ 4 mi. south.west of Georgia Highway 1. GGS. No. 57 E levation: 130 ft. Total depth: 1035 ft. "Completed: May 28, 1942 Summary of Stratigraphy Tertiary i ",,: t Miocene(?) undifferentiated (I, sample).; Oligocene (?) do, (1 sample) _,"No samples.; :.... '_...., In ' Eocene " upper;' Ocala Limestone, upper member. o. lower member.. _ Thickness 20?. 55? 60 -, P ublicat ion.of this data ts authorized by the Sun Oil Company. for whom the report' was. pr epared on a commereial basis. : "'"' J.... _J

3 GEORGIA GEOLOGICAL S URVEY B ULLETIN 74 middle ' I Unit A ~..:.. " _ B ' ]~_'- '- ~ _ C ~ ~ : ~ _ D ~ _ Lithologic and paleontologic description of cuttings and cores. Samples are,cuttings unless otherwise stated. Description Tertiary Miocene(1)' undifferentiated 20 Clay, tan, sandy, slightly micaceous: Thickness (feef) to 537 total 498 depth \ Oligocene (7) undifferentiated 55 Limestone, chalky, water-worn, containing traces of fossils., ' 115 : " j In Eocene Upper Eocene.~ Ocala Lirnestone,, Upper Member,.. - l :.. " Limestone, light-cream, chalky, porous, composed of poorly-preserved, fragmentary molds of. fossil shells; among which, are L epidocy5jlina sp., Gypsina, globula, bryozoan' fragriients, and echinoid spines.', ", ', ',. ". ; Limestone, iron-stained, hard, chalky, water-worn, showing traces' of fossil shells; among which are f ragments of,l epidocyclina sp. U~per 'Eocene. Ocala, Lim~stone., Lower. Member, '<1.. ' :(l : '~ ;{, Limestone, white, chalky, porous, fos siliferous. Amo A'g the 'poorlypreserved molds, fragments of molds, and impressions of shells, are specim ens of L epid oeuclina sp., Operculina sp., worn frag- ' ments of Asterocyclina(?)', Amphist egina pinarensis, R()bul~Ul sp., Amphistegi?la alabamensis, and specim ens of a few other small Foraminifera (Ocala species). Limestone, cr eam, hard, chalky. A few fragments of lim estone ' - ' contain traces -of sections of mierofcssils. - ',.';' \ ~ ' Limestone, chalky. A very small sample. '".;!," ; Limestone, white, chalky, highly microfossiliferous, eontaining many 'specimens of L epidocyclina ocalana and varieties" a few spe cimens of Operculina sp.,' and, many specimens of -4 rnphistegina alabatnensis that is common in the lower member ~f the Ocala Limestone in western Florida. ' Limestone, chalky, fossiliferous. Worn fragments of L epulocuclina sp, ' are common, and sp ecimens of Amphist ~gina p ind~ens is -, ;

4 ( reet ).. I 270, 290, a ",.'; 340. _. '.I \ ' 430 LOGS OF SELECTED WELLS I N THE C OASTAL PLAIN OF GEORGIA ~ r. ". ~." '; " J Descriptton are abundant. Al so present are poorly-preserved specimens of Camerina sp., Opercu/ina' sp., Gypsina g/obula, and bryozoan fragments..' ".~ i. '.. Lim estone, cream, chalky, f ossiliferous. ;'The foraminiferal material consists of worn ch alky molds.,the sp ecies seem to be the ' same asvin the sample at 220 fe et,' but,specim ens of Cam erina sp. are much more abundant. :: '.. Limeston e,.white. and cream, hard, nodular;' containing abundant '.< t races of fossils and a.f ew grains of. glauconite. The sample contains fragments of a large coarsely beaded,l epidocuelina. sp,,, 'I'his rsample ' is pos sibly the :equivalent, of the Moody's Branch Marl at' th e base of the Jackson (upper Eocene) Group in Mississippi. : : ~. _). : ' r:". ", Middle EOcene'.-",,:1'.. ' ;j " f (' Unit A.." '. ". ) ', Sandstone, clear quartz, very fine grainedy.somewhat glauconitic, chalky. The sandstone contains many calcitic fragments 'that.' : seem' to be derived from b ~okim f ossil she lls ; "one poorly-preserved chalky specime n "of 'Lepidocyclina sp.; and worn bryozoan fragments. '.,, '*. ot '..,: Like sample at 306 ft. )" "... 'Limestone, white, hard, somewhat. gl auconitic, cont aining, frag.. m ents of sections of Ope~c~iinoides sp.,,l epidocyclina (Polylepidina) antillea, Ps eudophrrigmina sp, About 50 percent of, ' I. ' the sample is very uneven grained clea.r quar~~ sand. Cavings of limestone from hi gher 'levels are common. Sand, like sample at 327 ft.: and small fr~~e~"ts of white, hard, slightl y glauconitic chalk. The fauna seerijs to be like th e,.. sa mple at 327 ft., but the sp ecimens-are -too poorly presented " for sp ecific identification.,,: ;.1, ;" " ~ Unit' B.:., ", Limestone, light-gray,' dense,' 'sandy ' (very'"f ine grained sand), glauconitic (very f ine grained gla uconite}. The<grains of glau. conite a r e evenly distributed in the limestone. 370 ' 375 4:, ~...,, Like sample at 353 ft. Like sa mp le at 353 ft. Limestone; light-gray, highly sandy, chalky. The sample contains a trace of mica, fragments of 'Oetrea: sp. and,jchinoids,' and a ti l c, ' very'few specimens of sm aller Foraminifera, including Cibicides,we8ti...i.. ".. '.. ' Like samphi 'at'r400 ft. ' ; 1 ":",Uni t C : ", i ' ",. ChaH~ ;,highly' sandy, sli ghtl y glauconiti c, containing many worn fragments of a thi n-shelled bivalve (Ostrea(?) sp.). Several poorly-preserved specimens of small. Foraminifera al so. occur, ",n ;..', I _. OJ

5 ,,, 'S 476., , " GEORGIA GEOLOGICAL SURVEY BULLETIN 74 Description among which Asterigerina lisbonensis is the dominant form, and Globigerina sp., Cibicides sp., and others are also present. Limestone, iron-stained, hard, glauconitic (moderately coarse grained glauconite), sandy (moderately coarse-grained sand), containing many fragments of a partly calcitized fossil bivalve. The material has the appearance of having been weathered during exposure at the surface.'.. Limestone, white, highly glauconitic (moderately coarse grained glauconite), sandy (moderately coarse grained sand), containing a trace of mica. Poorly-preserved fragments of macrofossils are embedded in the limestone. About 50 percent of the sample is very uneven grained clear quartz sand. Like sample at 438 ft. Sand, chalky, coarse-grained, uneven, glauconitic, containing worn fragments of fossil bivalves, and several chalky, glauconitic specimens of Asterigerina lisbonensis. t '!' I :,. Like sample at 458 ft. '".,Sand, clear quartz, uneven-grained, glauconitic; sand grains and angular to subangular ~ ' Several specimens of small Foraminifera are present, among which AsterigerinfL lisbonensis is dominant, and Gyroidina soldanii var. octocamerat~ is fairly common. The.sample also.contains a few ostracodes arid echinoid spines. Lime~'tone, 'whit e~ ' hard, 'san dy, glauconitic, containing fragments of molds of macrofossils.. '. s'luid, clear quartz, moderately coarse-grained, moderately even grained, glauconitic, containing a few fragments of a thin. shelled Ostrea(?) sp., and a few chalky fragments of. other fossils. ' Like sample at 490 ft., but both sand ' and glauconite are coarser grained, and nodules of glauconite are abundant. Sand, clear quartz, slightly glauconitic. 'The sand grains are moderately fine, moderately ev~n, andangular, ' Like sample at 500 ft. 'h,:, j.. ',_, Unit D, \.. Sand, pinkish-tan, clear quartz, very uneven' grained, angular to sub angular to rounded. Sample contains some glauconite. (prob,ably caving) and some' fragments of pink clay..likesample at 537 ft.,., Sand, pinkish-tan, clear' quartz, moderately coarse, moderately even grained; a trace of colorless mica. The color of the sand is due to staining by the clay matrix. Sand, light-tan. The sand is somewhat coarser than the sample at 555.R r, and contains a few nodul~s of glauconite. Like sample at 576 ft. : No ' change. '.,. ~ r':

6 dbw ;, 4 LOGS OF S ELECTED W ELLS IN THE C OASTAL PLAIN OF GEORGIA ~... D epth ~6, ( T.D. n. Description Like preceding samples, but contains, almost no glauconite. Li ke sample at 697 ft. Like sample at 721 f t., but contains no glauconite. Lik e sample at 755 ft., 'but sand is coars er grained. Lik e sample at 768 ft., but contains fragments of sandy limestone that are probably caving from higher levels. Sand, like preceding sa mples, but finer grained, somewhat chalky, an d containing many nodules of glauconite. The sample contains several poorly-p re served spe cimens of smaller Foraminifera, among which Bobul us sp. (close to L enticulina rotulata) is a common f orm; no di agnostic species seem to be present.. Sand, clear quartz, uneven grained, somewh at glauconitic, and similar, in general, to sample at 940 ft. This sample al so cont ains a f ew specimens of nondiagnostie species of Foraminifera, and a few oth er sp ecim ens which probably caved from higher depths. Sand and a little glauconite like the sample at 970 ft., but the sand is somewhat f iner grained.,. Operator: Hunt Oil Co. Landowner: Metcalf Well 1 -' DECATUR COUNTY Location: Land District 21, Land Lot 260, center of NE % of Land Lot, 260 Summary of Stratigraphy Tertiary Paleocene In beds containing Tamesi fauna at 1930 f't., 1st sample GGS. No. 168 Elevation: 104 f t. (derrick floor) Total depth: 6152 ft. Completed: Aug. 19, 1944 _ De pth Thiekne??

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.