r.p ^ 
 
 C 3t 
 
 OteA SulCUJLL^ 
 
 Press Bulletin Series 
 
 For the Oil and Gas Industry 
 
 STATE OF ILLINOIS 
 DEPARTMENT OF REGISTRATION AND EDUCATJ 
 M. F. WALSH. Director 
 
 DIVISION OF THE 
 STATE GEOLOGICAL SURVEY 
 
 M. M. LEIGHTON, Chief, Urbana 
 
 
 0^° 
 
 0^ 
 
 <fe^ 
 
 ^ 
 
 No. 19 
 
 ILLINOIS PETROLEUM 
 
 April 11, 1931 
 
 GEOLOGY OF THE PINCKNEYVILLE AND JAMESTOWN 
 AREAS, PERRY COUNTY, ILLINOIS 
 
 By Alfred H. Bell, Clayton Ball, and Louis McCabe 
 
 Introduction 
 
 Prospecting by various interested parties in the vicinities of Pinckney- 
 ville and Jamestown, Perry County, has disclosed structures which are con- 
 sidered to have favorable oil and gas prospects and over which leases have 
 been taken for much of the acreage. The geological studies in southwestern 
 Illinois which are in progress by the State Geological Survey, together with 
 
 Fig. 1. Index map showing the locations of (A) the Pinckneyville and (B) the James- 
 town areas mapped in figures 4 and 5. their relations to nearby oil and gas fields, and 
 the positions of wells referred to in thetext. See also figure 3. 
 
ILLINOIS PETROLEUM 
 
 data generously contributed by those who have been engaged in prospecting, 
 provide information that may assist in the proper testing and development of 
 these areas. This information is presented herein. 
 
 The details of the structures, so far as known, are shown in figures 4 
 and 5 by contours that give the elevation of the top of Herrin (No. 6) coal. 
 This coal was selected as the key horizon because it is present throughout the 
 area and because many data concerning it are available. Well, coal test, and 
 mine records have been supplemented by studies of rock outcrops and by 
 descriptions of old mines as related by residents of Pinckneyville. At a few 
 places the elevation of the horizon was calculated by adding to or substracting 
 from the elevation of some other stratum the known interval between that 
 stratum and the key horizon. The locations and elevations of datum points 
 used in preparing the structure maps were determined largely by planetable 
 survey. The accuracy and detail of the structure is obviously a function of 
 the number of and intervals between datum points. 
 
 The collection of field data, the compilation of records, and the prepara- 
 tion of the structure maps, all relating to Pennsylvanian stratigraphy, were 
 done by Messrs. Clayton Ball and Louis McCabe for the Pinckneyville and 
 Jamestown areas, respectively, under the direction of Dr. G. H. Cady, geol- 
 ogist in charge of the Coal Section of the Survey. The discussions of pre- 
 Pennsylvanian stratigraphy and structure and of oil possibilities were pre- 
 pared by Dr. A. H. Bell, geologist in charge of the Petroleum Section. The 
 planetable surveys were made by Messrs. P. S. McClure and W. B. Roe of 
 the Petroleum Section. The report has been edited by Dr. George E. Ekblaw. 
 geologic editor of the Survey. 
 
 Stratigraphy 
 pennsylvanian system 
 
 Strata of Pennsylvanian age, mantled by glacial drift and loess, immedi- 
 ately underlie the areas and are exposed at some places along the streams. 
 (Figs. 4 and 5.) The complete succession of the strata is shown in the strati- 
 graphic column (fig. 2). 
 
 Coal No. 6, its roof shales, and its limestone caprock are the only rocks 
 which crop out in the Pinckneyville area. The coal and caprock crop out in 
 the bed of Beaucoup Creek just northeast of Pinckneyville and south of the 
 Missouri-Pacific Railroad Bridge, in the center of the S. y 2 SE. *4 sec. 13, 
 T. 5 S.. R. 3 W. (rig. 4, map No. 6). The coal also crops out along the 
 south side of the shallow ravine in the southeast part of Pinckneyville, in the 
 center of the S. y 2 SE. y A sec. 24, T. 5 S., R. 3 W., where it is also mined 
 (fig. 4, map No. 11). A ledge of limestone three feet thick, immediately 
 overlain by glacial drift and probably partly eroded before the drift was 
 
 iHi 
 
PINCKNEYVILLE AND JAMESTOWN AREAS 
 
 MEMBERS 
 
 CUTLER 
 
 --CALUM" 
 
 BANKSTON 
 
 CHARACTERISTICS AND THICKNESS 
 
 ■SANDSTONE, MEDIUM GRAINED, YELLOW; FORMS LEDGES, SFEET 
 
 STRATA CONCEALED ; MAY BE BOTH OR EITHER SANDSTONE 
 [ AND/OR SHALE; 8-10 FEET 
 
 SHALE , OLIVE-GRAY, FINELY LAMINATED ; CONTAINS SANDY "IRONSTONE" 
 
 CONCRETIONS ; 10 FEET 
 SANDSTONE, DENSE, FINE GRAINED, MICACEOUS, IN LENSES 
 
 INTERBEDDED WITH OR REPLACING UPPER PART OF 
 
 UNDERLYING COAL ; 8-10 INCHES 
 COAL ; 3 - 18 INCHES 
 UNDERCLAY; Vj- 2 FEET 
 LIMESTONE, MOTTLED LIGHT GRAY WITH PINK OR PURPLISH 
 
 CAST, MASSIVE , FOSS1LIFEROUS ; CONTAINS BLACK SPHERICAL 
 
 CONCRETIONS, S- 8 FEET 
 
 SHALE, BLUISH-GRAY; POORLY EXPOSED; 4- 8 FEET 
 SHALE, CARBONACEOUS, BL ACK ,HARD, L A MINATED ; CONTAINS 
 CUTLER^ CONODONT FOSSILS; 0- 2 -FEET 
 
 COAL ,0-2 V z FEET 
 
 UNDERCLAY; LOWER PART EARTHY TO CALCAREOUS; GRADES INTO 
 UNDERLYING L IME STONE, FROM WHICH IT MAY HAVE BEEN 
 WEATHERED ; 2-7 FEET 
 [LIMESTONE, EARTHY, YELLOW, NODULAR ; FOSSILS RARE OR 
 I ABSENT; 3 FEET 
 
 ■SHALE, LAMINATED ; POORLY EXPOSED; 5-7FEET 
 
 (LIMESTONE, ARGILLACEOUS, DARK BLUE, 
 \ WEATHERS BROWN; 2 7 2 - 7 FEET 
 
 MASSIVE, FOSSILIFEROUS ; 
 
 FORK'' 
 
 -SHALE, LAMINATED', POORLY EXPOSED; A'/i- 7 FEET 
 
 JAMESTOWN LIMESTONE, DARK BLUE, CONTAINS PRODUCTUS SP; 2 Vz FEET 
 
 ■SHALE, GRAY, FOSSILIFEROUS, 3 FEET 
 ■SHALE, CARBONACEOUS, DARK, 8 INCHES 
 
 COAL; 3-6 JNCHE S 
 
 SHALE , DARK , BLUISH - GRAY ; 4 '/jFECT 
 
 utdd.m 6 LIMESTONE, ARGILLACEOUS, BLUISH - GRAY, HARD, DE NSE: CONTAINS 
 
 HERRIN FEW FOSSILS; 4 V5- 6 FEET 
 
 SHALE, CARBONACEOUS, BLACK, HARD, LAMINATED ; 2 '/ 2 FEET 
 
 -HERRIN (NO 6) -coal; 6 ± feet 
 
 -UNDERCLAY • 2 - 5 FEET 
 
 Fig. 2. Generalized stratigraphic column of Pennsylvania!] strata above and 
 including Herrin (No. 6) coal in the vicinity of Pinckneyville and James- 
 town, as compiled from outcrops and records. 
 
 1. The name Cutler is applied to this limestone member because it is typi- 
 
 cally exposed in the vicinity of Cutler, Perry County, Illinois. 
 
 2. The name Cutler is applied to this coal bed because it is generally asso- 
 
 ciated with the Cutler limestone. 
 
 3. The name Galum is applied to this limestone because it is well exposed 
 
 alont; Galum Creek near Pinckneyville, Illinois. 
 
 4. See Cady, G. H., "Areal geology of Saline County," Trans 111. Acad. Sci., 
 
 vol. 19, p. 261, 1927. 
 
 5. The name Jamestown is applied to this limestone because it is typically 
 
 well exposed in the vicinity of Jamestown, Perry County, Illinois. 
 
 6. See Cady, op. cit. 
 
4 ILLINOIS PETROLEUM 
 
 deposited, crops out in the east bank of Beaucoup Creek six feet above 
 stream-level a short distance north of the Illinois Central Railroad bridge in 
 the center of sec. 30, T. 5 S., R. 2 W. (fig. 4, map No. 16). It closely 
 resembles and is correlated with the nine-foot bed of limestone which occurs 
 • 25^ feet above the coal in the shaft of the North Side Coal Company in the 
 SE. y A SW. y A sec. 13, T. 5 S., R. 3 W., (fig. 4, map No. 4), as shown 
 below : 
 
 Log of shaft of North Side Coal Company 
 
 SE. Y 4 SW. y 4 sec. 13, T. 5 S., R. 3 W. 
 
 Surface elevation, 422.0 feet 
 
 Thickness Depth 
 
 Feet Inches Feet Inches 
 
 Surface material — soil, loess, and glacial drift (boarded) 25 25 
 
 Limestone 11 6 36 6 
 
 Shale, gray, hard 1 3 37 9 
 
 Shale, soft, clay (boarded) 3 9 41 6 
 
 Shale, gray, hard 5 6 47 
 
 Shale, variegated 3 50 
 
 Limestone 9 59 
 
 Shale, gray 6 65 
 
 Coal (boarded ) 1 6 66 6 
 
 Underclay ( boarded ) 1 6 68 
 
 Shale, gray, hard 6 74 
 
 Limestone 8 82 
 
 Shale, black, hard, laminated ("slate") 2 84 
 
 Coal 6 90 
 
 Underclay 2 6 92 6 
 
 The strata that crop out in the vicinity of Jamestown (fig. 5) are strati- 
 graphically higher than those at Pinckneyville. Strata above the Cutler lime- 
 stone crop out near the center of sec. 21, T. 5 S., R. 4 W. Pennsylvanian 
 strata below the Herrin limestone do not crop out, but are revealed by a core 
 test which was drilled on the west bank of Galum Creek in the NE. y\ SE. y\ 
 sec. 34, T. 5 S., R. 4 W., just north of the Missouri Pacific (formerly Wa- 
 bash, Chester, and Western) Railroad (fig. 5, map No. 29). The test stopped 
 in conglomeratic sandstone that is interpreted as the base of the Pennsylvanian 
 system. The log of the test is as follows : 
 
 Log of core test drilled in the NE. y SE. y 4 
 sec. 34. T. 5 S.. R. 4 IV. 
 
 Thickness Depth 
 
 Feet Inches Feet Inches 
 
 Surficial material, soil, loess, and glacial drift 17 6 17 6 
 
 Shale, black 1 10 19 4 
 
 Limestone, dark blue 8 8 28 
 
 Shale, black, hard, laminated, ("slate") 2 6 30 6 
 
 Coal (Herrin, No. 6) 5 10 36 4 
 
PINCKNEYVILLE AND JAMESTOWN AREAS 
 
 Underclay 1 
 
 Limesti me 1 
 
 Shale, white, soft 2 
 
 Limestone, light gray 2 
 
 Shale, sandy 7 
 
 Limestone, white, hard (> 
 
 Shale, gray, hard 2 
 
 I .imestc iiie, blue, hard 
 
 Coal 4 
 
 Underclay 11 
 
 Limestone 
 
 Shale 2 
 
 Shale, sandy, and a little sandstone 40 
 
 Shale, sandy 12 
 
 Shale, blue ; contains nodules of limestone 5 
 
 Limestone, fossiliferous 1 
 
 Shale, black, hard, laminated ( "slate" ) 8 
 
 Coal 3 
 
 Shale, gray, soft ( "soapstone" ) 1 
 
 Coal 
 
 Shale, dark, contains nodules of pyrite 2 
 
 Shale, gray, contains few nodules of pyrite 
 
 Shale, gray 
 
 Shale, black ; contains nodules of limestone 6 
 
 Limestone 
 
 Shale 13 
 
 Shale, black, hard, laminated ("slate") 2 
 
 Coal 2 
 
 Shale, dark, gray, hard, laminated ("slate" ) 1 
 
 Shale, gray, pyritic 6 
 
 Limestone 
 
 "Rock" brown, hard 
 
 Shale, green 
 
 Shale, sandy and sandstone 3 
 
 Shale, in which there are 4 feet each of sandstone and 
 
 limestone 15 
 
 Limestone, brown 
 
 Shale 9 
 
 Coal 1 
 
 Shale, clayey, green 
 
 Limestone 
 
 Coal 2 
 
 Underclay 1 
 
 Shale, gray 
 
 I ,imesti >ne. sandy 
 
 Shale, gray, contains nodules of limestone 
 
 Shale, dark 
 
 Coal, soft, mixed with "rock" 
 
 Shale, brown and gray; contains nodules of limestones 7 
 
 Shale 12 
 
 6 
 
 37 
 
 10 
 
 3 
 
 39 
 
 1 
 
 3 
 
 41 
 
 1 
 
 
 43 
 
 4 
 
 10 
 
 51 
 
 2 
 
 7 
 
 57 
 
 9 
 
 
 59 
 
 9 
 
 6 
 
 60 
 
 3 
 
 8 
 
 64 
 
 11 
 
 1 
 
 76 
 
 
 9 
 
 76 
 
 9 
 
 
 78 
 
 9 
 
 1 
 
 118 
 
 10 
 
 6 
 
 131 
 
 4 
 
 3 
 
 136 
 
 7 
 
 4 
 
 137 
 
 11 
 
 3 
 
 146 
 
 2 
 
 1 
 
 149 
 
 3 
 
 8 
 
 150 
 
 11 
 
 2 
 
 151 
 
 1 
 
 4 
 
 153 
 
 5 
 
 9 
 
 154 
 
 2 
 
 10 
 
 155 
 
 
 2 
 
 161 
 
 2 
 
 1 
 
 161 
 
 3 
 
 10 
 
 175 
 
 1 
 
 9 
 
 177 
 
 10 
 
 2 
 
 180 
 
 
 11 
 
 181 
 
 11 
 
 7 
 
 188 
 
 6 
 
 7 
 
 189 
 
 1 
 
 2 
 
 189 
 
 3 
 
 9 
 
 190 
 193 
 
 
 4 
 
 208 
 
 4 
 
 3 
 
 208 
 
 7 
 
 8 
 
 218 
 
 3 
 
 6 
 
 219 
 
 9 
 
 6 
 
 220 
 
 3 
 
 11 
 
 221 
 
 2 
 
 r> 
 
 223 
 
 8 
 
 7 
 
 225 
 
 3 
 
 8 
 
 225 
 
 11 
 
 8 
 
 226 
 
 7 
 
 9 
 
 227 
 
 4 
 
 5 
 
 217 
 
 9 
 
 9 
 
 228 
 
 6 
 
 6 
 
 236 
 
 
 9 
 
 248 
 
 9 
 
6 
 
 253 
 
 3 
 
 7 
 
 254 
 
 10 
 
 4 
 
 255 
 
 2 
 
 5 
 
 258 
 
 7 
 
 5 
 
 259 
 
 
 7 
 
 267 
 
 7 
 
 9 
 
 269 
 
 A 
 
 11 
 
 275 
 
 3 
 
 1 
 
 275 
 
 4 
 
 10 
 
 276 
 
 2 
 
 3 
 
 276 
 
 5 
 
 3 
 
 282 
 
 8 
 
 7 
 
 284 
 
 3 
 
 ? 
 
 286 
 
 5 
 
 9 
 
 293 
 
 2 
 
 1 
 
 293 
 
 3 
 
 
 298 
 
 3 
 
 4 
 
 298 
 
 7 
 
 9 
 
 327 
 
 4 
 
 
 328 
 
 4 
 
 8 
 
 343 
 344 
 
 
 6 ILLINOIS PETROLEUM 
 
 Sandstone 4 
 
 Shale, black, hard, laminated ( "slate"), pyritic 1 
 
 Shale, black, fossiliferous 
 
 Coal 3 
 
 Shale, black, hard, laminated ("slate") 
 
 Shale, sandy dark 8 
 
 Shale, gray ; contains nodules of limestone •. 1 
 
 Shale, gray, hard 5 
 
 "Rock", hard 
 
 Shale 
 
 "Rock," hard 
 
 Shale, dark gray 6 
 
 Coal 1 
 
 Shale, dark ; contains nodules of limestone 2 
 
 Shale, sandy, gray 6 
 
 Shale, hard, laminated ("slate") mixed with coal 
 
 Shale 5 
 
 Coal, mixed with shale, hard, laminated 
 
 Shale 28 
 
 Sandstone, white ; contains thin seam of coal 1 
 
 Sandstone, coarse grained and conglomeratic ("millstone grit") 14 
 
 Sandstone, conglomeratic 1 
 
 PRE-PENNSYLVANIAN SYSTEMS 
 
 The Pennsylvania!! strata are underlain by the Chester series of Upper 
 Mississippian age, which ontcrop in Monroe and Randolph counties to the 
 west, where they consist of shale, limestone, and sandstone in approximately 
 equal amounts. As no data concerning the Chester strata in the Pinckneyville 
 and Jamestown areas are available, their character and thicknesses can be only 
 inferred from a study of the logs of the nearest borings which penetrate them 
 (figs. 1 and 3, and pp. 15-22). 
 
 Lower Mississippian and Devonian strata were penetrated in the Lange 
 well No. 4 in sec. 15, T. 7 S., R. 4 W., six miles south of Jamestown; in 
 the St. John well seven miles east of Pinckneyville ; in the Koch well 
 No. 1 in sec. 35, T. 2 S., R. 5 W., near Darmstadt, about twenty miles north- 
 west of Pinckneyville; and in the Adam Funk well in sec. 14, T. 1 S., R. 6 
 W., about 30 miles northwest of Pinckneyville (fig. 1). The Lange well, 
 of which the total depth is 2,530 feet, penetrated Devonian limestone for the 
 bottom 120 feet. The St. John well, of which the total depth is 3.600 feet, 
 probably reached the base of the Sweetland Creek (basal Mississippian) 
 shale at 3,100 feet. 
 
 Formations down to the Kimmswick ("Trenton") limestone have been 
 identified from samples of drill cuttings from the Adam Funk well. The 
 Kimmswick limestone was also penetrated by the Koch well, of which the 
 
riXCKXF.YVII.LK A .\ P JAMESTOWX AREAS 
 
 RiCklNBERG 
 
 Clcvation 
 
 Fig. 3. Cross-section between the Ava-Campbell Hill gas field and the Pinckneyville 
 area (fig. 1). Detailed well logs are given on pages 15-22. 
 
8 
 
 ILLINOIS PETROLEUM 
 
 driller's log accords with the log of samples of the Funk well, and both con- 
 firm the interpretation of the log of the Lange well. 1 
 
 The following table of estimated thicknesses and depths of the geological 
 formations may prove of some value to those who are interested in the area. 
 Owing to the scarcity of data regarding the deeper formations and to the pos- 
 sibility of local and regional variation in thicknesses, the estimates may err 
 considerably from the actual figures. 
 
 Table of classification, thicknesses, and depths of geologic strata in the Pinckneyville 
 
 and Jamestown areas 
 
 Thickness Depth to 
 
 base 
 (Estimated) (Estimated) 
 Feet Feet 
 
 Cenozoic group 
 
 Recent and Pleistocene systems 
 
 Soil, alluvium, loess, till 0-SO IS 
 
 Paleozoic group 
 
 Pennsylvanian system 
 
 Shales, sandstones, limestones, coals, 
 
 and underclays (figs. 2 and 3 and pp. 15-22) 535 550 
 
 Mississippian system 
 Chester series 
 
 Shales, limestones, and sandstones (fig. 3 and 
 
 pp. 15-22) 1050 1600 
 
 Meramec, Osage, and Kinderhook series 
 
 Mainly limestone ; shale and argillaceous limestone 
 
 in lower part ; Sporangites shale at base 1250 2850 
 
 Devonian-Silurian systems 
 
 Limestone and dolomite 500 3350 
 
 Ordovician system 
 Maquoketa series 
 
 Shale, gray ' 150 3500 
 
 Mohawkian series 
 
 Kimmswick, Plattin, and Joachim formations 
 
 ("Trenton") Limestone, crystalline, shaly in 
 
 lower part 500 4000 
 
 St. Peter formation 
 
 Sandstone .... 
 
 1 Root, Towner B., The oil and gas resources of the Ava-Campbell Hill area: Illinois 
 State Geol. Survey Report of Investigations No. 16, p. 8, 1928. 
 
PINCKNEYVILLE AND JAMESTOWN AREAS 
 
 Table 1 — Data to accompany structure map of the Pinckneyville area (fit/. 4) 
 
 Map 
 
 Xo. Location Description 
 
 T. 5 S.. R. 3 W. 
 Sec. 
 
 1 12 Ohio Oil Company test well 
 
 2 13 Illinois 6th-vein mine 
 
 3 13 Langworth mine 
 
 4 13 North Side Coal Company mine 
 
 5 13 Beck mine 
 
 6 13 Coal outcrop 
 
 7 23 Brewerton Mine No. 45 
 
 8 23 Brewerton Mine No. 46 
 
 9 24 Pinckneyville High School 
 
 foundation test 
 
 10 24 Brown mine 
 
 11 24 Biby Coal Company slope mine 
 
 12 25 White Walnut mine 
 
 13 25 Owen's (Jones') mine 
 T. 5 S., R. 2 W. 
 
 14 18 Local coal test 
 
 15 18 Local coal test 
 
 16 30 Base of limestone outcrop 
 
 * Elevations marked with an asterisk are eminently reliable; those not so marked are 
 less reliable. 
 
 Geologic Structures 
 
 The Pinckneyville anticline (fig. 4), of which the highest part occurs in 
 the SE. Yx sec. 24, T. 5 S., R. 3 W., has a north-south axis along which it 
 plunges gently northward and abruptly southward. The east limb of the fold 
 dips more gently than the west limb. Synclines lie on either side of the anti- 
 cline and a normal fault occurs in the syncline on the west. This fault, or 
 fault zone, was encountered in the west workings of the White Walnut mine, 
 in the XE. ]/+ sec. 26, T. 5 S., R. 3 W., where the amount of displacement 
 is 28 feet with the downthrow side on the east. It extends a little east of 
 north, essentially parallel to the anticlinal axis, as far as the NE. corner of 
 the SE. Yx sec. 14. Most of the east entries extend to but not beyond the 
 fault. No traces of the fault are found in the Pyramid Coal Company's 
 strip mines south of the Pinckneyville area. The dip of the fault plane is 
 not known. 
 
 
 Top 
 
 of Herrin 
 
 Surface 
 
 (No. 
 
 6) coal 
 
 elevation 
 
 Depth 
 
 Elev. 
 
 Feet 
 
 Feet 
 
 Feet 
 
 429.5 
 
 72 
 
 358* 
 
 427.8 
 
 74 
 
 354* 
 
 410.9 
 
 90 
 
 321 
 
 422.0 
 
 84 
 
 338* 
 
 420.6 
 
 55 
 
 366 
 
 394.0 
 
 
 394* 
 
 454.4 
 
 146.5 
 
 308 
 
 467.1 
 
 133 
 
 334 
 
 428.7 
 
 22 
 
 407 
 
 445.7 
 
 85 
 
 361 
 
 417.8 
 
 
 418* 
 
 438.1 
 
 92 
 
 346* 
 
 425.1 
 
 38 
 
 387 
 
 418.8 
 
 65 
 
 354 
 
 421.1 
 
 65 
 
 356 
 
 388.9 
 
 25 
 
 364* 
 
10 
 
 ILLINOIS PETROLEUM 
 
 R 3W 
 
 LEGEND 
 
 -(J)- DRY HOLE 
 
 O COAL TEST 
 1? MINE SHAFT 
 
 3? ABANDONED MINE 
 ^) MINED OUT AREA 
 
 Fig. 4. Structure map of the Pinckneyville area. Contour interval, 10 feet ; datum, 
 sea-level. 
 
 STRUCTURE CONTOURS 
 
 ▲ 
 
 COAL OUTCROP 
 
 GIVING ELEVATION 
 
 Z^ 
 
 LIMESTONE OUTCROP 
 
 TOP OF NO 6 COAL 
 
 
 
 KNOWN FAULT 
 
 yS DEFINITE 
 
 
 
 PROBABLE FAULT 
 
 --LESS DEFINITE 
 
 T 
 
 DOWNTHROW SIDE 
 
 SCALE 
 
 
 
 'A 'A 3 /» 
 
 i 1 i 1 
 
 I MILE 
 
 J 
 
 
PIN-CKXEYYIU.E AN'l) JAMESTOWN AREAS 
 
 11 
 
 Table 2 — Data to accompany structure map of the Jamestown area (fig. 5) 
 
 
 
 
 
 
 Top of Herrin 
 
 Map 
 
 
 
 
 Surface 
 
 (No. 6) 
 
 coal 
 
 Xo. 
 
 Location 
 
 Description 
 
 elevation 
 
 Depth 
 
 Elev. 
 
 
 T. 5 S., R. 
 
 4 \V. 
 
 
 
 
 
 
 Sec. 
 
 
 
 Feet 
 
 Feet 
 
 Feet 
 
 1 
 
 21 
 
 Pyramid Coa 
 
 Corp. test 
 
 459 
 
 68 
 
 391 
 
 2 
 
 26 
 
 Pyramid Coa 
 
 Corp. test 
 
 453 
 
 a 
 
 
 3 
 
 26 
 
 Pyramid Coa 
 
 Corp. test 
 
 437 
 
 a 
 
 
 4 
 
 26 
 
 Pyramid Coa 
 
 Corp. test 
 
 452 
 
 a 
 
 
 5 
 
 27 
 
 Pyramid Coa 
 
 Corp. test 
 
 455 
 
 a 
 
 
 6 
 
 27 
 
 Pyramid Coa 
 
 Corp. test 
 
 450 
 
 a 
 
 
 7 
 
 27 
 
 Pyramid Coa 
 
 Corp. test 
 
 453 
 
 60 
 
 393 
 
 8 
 
 27 
 
 Pyramid Coa 
 
 Corp. test 
 
 430 
 
 48 
 
 382 
 
 9 
 
 27 
 
 Pyramid Coa 
 
 Corp. test 
 
 447 
 
 a 
 
 
 10 
 
 28 
 
 Pyramid Coa 
 
 Corp. test 
 
 438 
 
 38 
 
 400 
 
 11 
 
 28 
 
 Pyramid Coa 
 
 Corp. test 
 
 459 
 
 a 
 
 
 12 
 
 28 
 
 Pyramid Coa 
 
 Corp. test 
 
 464 
 
 a 
 
 
 13 
 
 28 
 
 Pyramid Coa 
 
 Corp. test 
 
 428 
 
 a 
 
 
 14 
 
 28 
 
 Pyramid Coa 
 
 Corp. test 
 
 438 
 
 48 
 
 390 
 
 IS 
 
 28 
 
 Pyramid Coa 
 
 Corp. test 
 
 456 
 
 53 
 
 403 
 
 16 
 
 28 
 
 Pyramid Coa 
 
 Corp. test 
 
 445 
 
 a 
 
 
 17 
 
 29 
 
 Clark Bros., A 
 
 N. S. Irving oil test b 465 
 
 
 
 18 
 
 33 
 
 Pyramid Coa 
 
 Corp. test 
 
 447 
 
 48 
 
 399 
 
 19 
 
 33 
 
 Pyramid Coa 
 
 Corp. test 
 
 443 
 
 43 
 
 400 
 
 20 
 
 33 
 
 Pyramid Coa 
 
 Corp. test 
 
 451 
 
 51 
 
 400 
 
 21 
 
 33 
 
 Pyramid Coa 
 
 Corp. test 
 
 469 
 
 63 
 
 406 
 
 22 
 
 34 
 
 Pyramid Coa 
 
 Corp. test 
 
 432 
 
 52 
 
 380 
 
 23 
 
 34 
 
 Pyramid Coa 
 
 Corp. test 
 
 431 
 
 40 
 
 391 
 
 24 
 
 34 
 
 Pyramid Coa 
 
 Corp. test 
 
 431 
 
 21 
 
 410 
 
 25 
 
 34 
 
 Pyramid Coa 
 
 Corp. test 
 
 439 
 
 31 
 
 408 
 
 26 
 
 34 
 
 Pyramid Coa 
 
 Corp. test 
 
 432 
 
 37 
 
 395 
 
 27 
 
 34 
 
 Pyramid Coa 
 
 Corp. test 
 
 430 
 
 26 
 
 404 
 
 28 
 
 34 
 
 Pyramid Coa 
 
 Corp test 
 
 433 
 
 31 
 
 402 
 
 29 
 
 34 
 
 W. C. & W. 
 
 R. R. well 
 
 431 
 
 30 
 
 401 
 
 30 
 
 34 
 
 Outcrop of C 
 
 utler coal 
 
 455 (top) . . 
 
 
 31 
 
 34 
 
 Southern Gen 
 
 i Coal Company 
 
 
 
 
 
 
 No. 7 mine 
 
 
 489 
 
 73 
 
 416 
 
 32 
 
 35 
 
 Pyramid Coa 
 
 Corp. test 
 
 452 
 
 60 
 
 392 
 
 33 
 
 35 
 
 Pyramid Coa 
 
 Corp. test 
 
 b 450 
 
 a 
 
 
 34 
 
 35 
 
 Southern Gen 
 
 l Coal Company 
 
 test b 450 
 
 97 
 
 353- 
 
 35 
 
 35 
 T. 6 S., R. 
 
 Southern Gen 
 4 W. 
 
 l Coal Company 
 
 test b 450 
 
 99 
 
 351 
 
 36 
 
 2 
 
 Pyramid Coa 
 
 Corp. test 
 
 b 460 
 
 a 
 
 
 37 
 
 2 
 
 Outcrop of C 
 
 utler limestone 
 
 427 
 
 'bottom) 
 
 
 38 
 
 3 
 
 Outcrop of C 
 
 utler coal 
 
 432 
 
 (top) 
 
 
 39 
 
 4 
 
 Wilson Coal 
 
 Company mine 
 
 488 
 
 105 
 
 383 
 
 40 
 
 5 
 
 Cutler Oil te 
 
 5t 
 
 b 500 
 
 '102 
 
 398 
 
 41 
 
 5 
 
 Southern Gen 
 
 i Coal Company 
 
 
 
 
 
 
 mine No. 1 
 
 
 
 497 
 
 100 
 
 397 
 
12 
 
 ILLINOIS PETROLEUM 
 
 R 4 W 
 
 LEGEND 
 
 -$■ DRY HOLE STRUCTURE CONTOURS 
 
 O COAL TEST GIVING ELEVATION OF 
 
 -5C MINE SHAFT TOP OF NO. 6 COAL 
 
 3£ ABANDONED MINE /^DEFINITE 
 
 • DIAMOND DRILL TEST ^""LESS DEFINITE 
 £$ MINED OUT AREA 
 jk. OUTCROP 
 
 SCALE 
 o 'A ■/» '/« 
 
 KEY TO OUTCROP LETTERS 
 
 a. CUTLER LIMESTONE 
 
 b CUTLER COAL 
 
 C GALUM LIMESTONE 
 
 d BANKSTON FORK LIME STONE 
 
 e JAMESTOWN LIMESTONE 
 
 f HERRIN LIMESTONE 
 
 FK , 5. Secure ,„.p oi .he J a ,« s ,o„„ are,. M. interval, » ** *■* - 
 
 level. 
 
PINCKNEYVILLE AND JAMESTOWN AREAS 13 
 
 42 10 Willis Coal & Mining Co. 456 95 361 
 
 43 11 Pyramid Coal Corp. test 6 460 a 
 
 a Hole did not penetrate to Herrin iN'o. 6) coal. 
 
 b Elevation estimated from topographic map. All other elevations determined by 
 telescopic alidade and planetable. 
 
 The closed anticlinal structure that centers about Jamestown in sec. 34, 
 T. 5 S., R. 4 \\\. is irregular in outline (fig. 5). From the highest part in 
 sec. 34. it plunges east-by-north into sec. 35, T. 5 S., R. 4 W., south into 
 sec. 3, T. 6 S., R. 4 W., and west into sec. 33, T. 5 S., R. 4 W., whence 
 two subsidiary anticlinal noses plunge respectively northwest into the S. ^ 
 sec. 28. T. 5 S., R. 4 \\\, and southwest into the NE. y 4 sec. 5. T. 6 S., R. 4 
 W. Complementary plunging synclines occur between the anticlinal noses on 
 the east, south, and west. On the north an east-west trending syncline sepa- 
 rates the Jamestown closure from another structural rise. 
 
 ddie Pinckneyville and Jamestown structures are of interest to the oil 
 prospector only if they were formed by post-Pennsylvanian folding, in which 
 case thev reflect similar structures in older strata where possible oil sands 
 occur. In the Ava-Campbell Hill and Sandoval areas (fig. 1), where the 
 structures are pronounced and have definite trends, the general parallelism 
 of the Pennsylvanian and the Chester strata indicates that the major part of 
 the deformation was post-Pennsylvanian in age, although the fact that the 
 Chester strata dip somewhat more steeply than the Pennsylvanian indicates 
 that some deformation along the same axes occurred in post-Chester, pre- 
 Pennsylvanian times. Further, in the Sparta area some pre-Pennsylvanian 
 structures are not reflected in the Pennsylvanian strata. - 
 
 Comparison of the Pinckneyville anticline with these structures in which 
 the dips of the pre-Pennsylvanian strata are known to be greater than those 
 of the Pennsylvanian, indicates that it too is probably of this type. The 
 Pinckneyville anticline is represented by about 60 feet of closure on Herrin 
 Xo. o coal, as compared with about 30 feet in the Sandoval dome. It trends 
 north-south parallel to the pronounced Duquoin fold which lies some eight 
 miles to the east. In view of these facts, the Pinckneyville anticline appears 
 to have been produced by forces similar to those which produced the Duquoin 
 and Sandoval structures, and therefore it may affect the deeper strata, pos- 
 sibly becoming more pronounced with depth. 
 
 The evidence with regard to the Jamestown anticline is less conclusive. 
 The syncline which lies on the north has a distinct east-west trend hut the 
 anticline itself has no definite trend. The structure apparently belongs to that 
 class which has been described as "amoeboid,'"" regarding whose origin geol- 
 
 2 Moulton, Gail F., Oil and gas possibilities near Sparta: Illinois State Geol. Survey 
 Illinois Petroleum Xo. 1, April 17, 1926. 
 
 "■ Twenhofel, W. H., Significance of some of the surface structures of central and 
 western Kansas; American Association of Petroleum Geologists, vol. :), p. 1003, 1925. 
 
14 ILLINOIS PETROLEUM 
 
 ogists are not agreed. If the dips of the strata are due to original deposition 
 or to settling of the sediments over an irregular surface, they can not be 
 considered as indication of structure in deeper strata. However, if the James- 
 town anticline does continue into the pre-Pennsylvanian strata, the closure 
 is probably sufficient to create an effective oil trap in any oil sands which may 
 be present. 
 
 Possible Producing Formations 
 
 chester series 
 
 The producing formations in the oil and gas pools nearest the Pinckney- 
 ville and Jamestown areas are of Chester (Upper Mississippian) age, and 
 therefore the Chester strata are regarded as having the best prospects for 
 production in the Pinckneyville and Jamestown areas. The producing forma- 
 tions in the Ava-Campbell Hill gas field 4 are the Cypress and Tar Springs 
 sandstones, and in the Sparta field the oil-bearing sand is probably either the 
 Cypress or the Yankeetown formation. Shows of oil from a sandstone 
 tentatively correlated as the Cypress have been found in several wells in sec. 
 33, T. 5 S., R. 2 W. In the most recent of these, drilled in the fall of 1930 
 by the Duquoin Oil Company on the John Harris farm in the NE. corner 
 SE. % NW. Y\ of the section, a show of oil was found at a depth of 1,334 
 feet, but abundant salt water immediately below the oil made it necessary 
 to abandon the well. 
 
 PRE-CHESTER STRATA 
 
 A number of pre-Chester formations which are considered to be possible 
 producing horizons in southwestern Illinois 5 are present but unproductive to 
 date in Perry County. The only evidence of oil in pre-Chester strata was a 
 very light show from the Devonian in the Lange well No. 4, located on the 
 crest of the Ava-Campbell Hill anticline which is much larger than the Pinck- 
 neyville and Jamestown structures. No shows of oil were reported from the 
 St. John well, although it was favorably located on structure and also pene- 
 trated Devonian strata. For these reasons prospects of oil and gas from the 
 Lower Mississippian and Devonian strata in the Pinckneyville and James- 
 town areas are not bright. 
 
 The Kimmswick limestone has not been tested nearer than the Koch 
 well on the Darmstadt anticline. The formation is regarded as a possible 
 producer in the region, but it is believed that under present economic condi- 
 tions the likelihood of finding production is not sufficient to justify drilling to 
 
 4 Root, Towner B., The oil and gas resources of the Ava-Campbell Hill area: Illinois 
 State Geol. Survey Report of Investigations No. 16, 1928. 
 
 5 Bell, Alfred H., The Darmstadt anticline and related structures, St. Clair County, 
 Illinois State Geol. Survey Illinois Petroleum No. 18, pp. 5-7, Nov. 2, 1929. 
 
PINCKNEYVILLE AND JAMESTOWN AREAS 15 
 
 the depth necessary to test the Kimmswick in the Pinckneyville and James- 
 town areas. 
 
 Recommendations 
 
 In view of their proximity to areas in which Chester sands are pro- 
 ductive, the numerous shows of oil and gas from Chester strata in the general 
 region, and the probability that the structure shown by the coal also affects 
 the underlying strata, especially in the Pinckneyville area, it is believed that 
 the Pinckneyville and Jamestown anticlines merit testing for oil and gas to 
 the base of the Chester series. Test wells should be located on the crests of 
 the structures as shown by the contour maps, which in the Pinckneyville area 
 would be near the NW. corner of the SE. y A SE. ]/ A sec. 24, T. 5 S., R. 3 W., 
 and in the Jamestown area would be near the NE. corner of the SE. 34 SW. 
 Y A sec. 34, T. 5 S.. R. 4 W. 
 
 Well Logs 
 
 (1) Log 1 of Mid-Egypt Gas and Oil Company Well No. 16, Rickenberg farm, Well 
 
 No. 3, SE. % NE. % see. 11, T. 7 S., R. 4 W. 
 
 Elevation, 633.02 feet 
 
 Thickness Depth 
 Feet Feet 
 
 Pleistocene System 
 
 Clay 10 10 
 
 Sand 90 100 
 
 Pennsylvanian System 
 
 Shale, gray, soft ("clay") 5 105 
 
 Shale, gray, soft ("clay") and sandstone, fine grained, 
 
 white '. 5 110 
 
 Shale, gray, soft ("clay") 15 125 
 
 Shale, gray, soft ("clay") and sandstone 10 135 
 
 Sandstone, coarse grained, gray 10 145 
 
 Shale, gray, soft ("clay") 5 150 
 
 Sandstone, coarse grained, becoming finer in lower 10 feet, 
 
 gray 30 180 
 
 Shale, gray 50 230 
 
 Shale, gray, and sandstone, coarse grained, gray 5 235 
 
 Sandstone, fine to coarse grained, white to brown 135 370 
 
 Mississippian System 
 Chester series 
 
 Clore formation 
 
 Shale, gray 2 372 
 
 Shale and sandstone 13 385 
 
 Shale, gray 20 405 
 
 1 Compiled from samples studied and correlated by Dr. Stuart Weller, adapted to 
 driller's log. 
 
16 ILLINOIS PETROLEl'M 
 
 Palestine formation 
 
 Sandstone, fine to coarse grained, gray, brown, in upper 
 
 5 feet 20 425 
 
 Menard formation 
 
 Limestone, gray, mixed with sand 5 430 
 
 Limestone, gray, crystalline IS 445 
 
 Shale, gray, calcareous, sandy 5 450 
 
 Limestone, argillaceous, gray, hard 10 460 
 
 Shale, calcareous, gray, and limestone 10 470 
 
 Limestone, dark gray, crystalline 15 485 
 
 Vienna formation 
 
 Shale, calcareous, gray 20 505 
 
 Shale, gray 20 525 
 
 Shale, calcareous, gray 15 540 
 
 Shale, gray, and limestone 10 550 
 
 Shale, calcareous, gray 5 555 
 
 Tar Springs formation 
 
 Sandstone, fine grained, gray 30 585 
 
 Glen Dean formation 
 
 Shale, calcareous except at top, gray 30 615 
 
 Limestone, light gray, crystalline 25 640 
 
 Limestone, light gray, crystalline, and shale, calcareous, 
 
 gray 10 650 
 
 Limestone, light to dark gray, subcrystalline 10 660 
 
 Limestone, argillaceous, gray 10 670 
 
 Limestone, light to dark gray, crystalline 5 675 
 
 Shale, gray and red 15 690 
 
 Shale, sandy, gray 5 695 
 
 Shale, gray and red. and limestone, crystalline 10 705 
 
 Hardinsburg ( ? ) formation 
 
 Limestone, gray, hard ; shale, calcareous, gray ; sandstone, 
 
 fine grained, gray 5 710 
 
 Golconda formation 
 
 Limestone, gray, crystalline and oolitic ; shale, gray, some 
 
 red at bottom 15 725 
 
 Limestone, gray, oolitic ; shale, gray 30 755 
 
 Shale, calcareous, gray ; some limestone 5 760 
 
 Limestone, light gray, oolitic ; some shale 8 768 
 
 Shale, calcareous, gray ; some limestone 22 790 
 
 Shale, calcareous, gray 55 845 
 
 Limestone, gray, oolitic and crystalline ; some shale, gray ; 
 
 sandstone, fine grained, gray 6 851 
 
 Shale, calcareous, gray 20 871 
 
 Cypress formation 
 
 Sandstone, fine grained, gray ; shale, dark ; contains salt 
 
 water 47 918 
 
 Paint Creek formation 
 
 Shale, dark ; some limestone 7 925 
 
 Limestone, gray, partly oolitic 45 970 
 
WELL LOGS 17 
 
 Limestone, gray, oolitic and crystalline ; shale, gray ; sand- 
 Mi me 5 975 
 
 Limestone, gray, crystalline; shale, gray 15 990 
 
 Limestone, crystalline; sandstone, gray 20 1010 
 
 Yankeetown formation 
 
 Sandstone, gray, fine grained; contains salt water 10 1020 
 
 (2) Log 1 of Midvalley Oil Company well, L. Gallagher farm, Well No. 1 NW. ' 4 SW. % 
 
 sec. 17. T. 6 S\, K. 3 W. 
 Elevation, 394.29 feet 
 
 Thickness Depth 
 Feet feet 
 
 Pleistocene system 
 
 Soil, clayey, loessial, yellow 6 6 
 
 Subsoil, clayey, sandy, loessial, yellow and brown 9 15 
 
 Loam, yellowish, ( loessial ) 9 24 
 
 Sand, pebbly, clayey ( till ? ) 8 32 
 
 Silt, clayey, pebbly ( till ? ) 8 40 
 
 Sand, pebbly 18 58 
 
 Clay, pebbly ( till ) 9 67 
 
 Sand 7 74 
 
 Pennsylvanian system 
 
 Shale, calcareous, gray 10 84 
 
 Limestone, black 3 87 
 
 Shale, black, hard, laminated; coal in lower part 5 92 
 
 Underclay; sandstone; shale, hard, black, laminated, and 
 
 limestone ( probably caved ) 6 98 
 
 Sandstone, gray; yellow limestone, black shale, and min- 
 eral charcoal (probably caved) 7 105 
 
 Shale, sandy, micaceous, light to dark gray, and sandstone, 
 
 white, yellow, and gray 22 127 
 
 Shale, calcareous, bituminous, black, hard, waxy, lami- 
 nated, fossilifcrous ; limestone, dark gray, coarsely 
 crystalline, fossilifcrous, in upper half; "clod," coal, 
 
 and underclay in lower half 16 143 
 
 Coal (possibly caved ) and underclay 10 153 
 
 Sandstone, micaceous; white to gray, some underclay at 
 
 top 19 172 
 
 Shale, clayey to sandy, gray; sandstone, gray; some lime- 
 stone 6 178 
 
 Shale, sandy, gray ; limestone ; shale, black 6 184 
 
 Shale, black and gray ; coal ; underclay 6 190 
 
 Underclay, gray ; limestone, black shale, and coal (pos- 
 sibly caved ) 12 202 
 
 Shale, sandy, gray to greenish-gray 4 206 
 
 Shale, gray ; limestone ; coal 6 212 
 
 Shale, gray ; shale, black ; coal ; limestone 6 218 
 
 'Compiled from samples studied by J. A. rddcii and restudied by R. S. Blatchley; 
 correlated by L. 10. Workman. 
 
18 ILLINOIS PETROLEUM 
 
 Sandstone, gray; shale, gray; black shale and coal (pos- 
 sibly caved) 6 224 
 
 Sandstone, carbonaceous, gray; shale, dark to black (pos- 
 sibly caved) 6 230 
 
 Sandstone, gray; shale, black (probably caved); "rock." 
 
 red, brown, and yellow 6 236 
 
 Limestone, yellowish-gray ; "rock," red ; shale, sandy, 
 
 gray ; sandstone 6 242 
 
 Sandstone, fine grained, dark gray, soft 6 248 
 
 Shale, sandy, gray 18 266 
 
 Shale, light gray to dark 6 272 
 
 Coal and underclay 6 278 
 
 Shale, black, contains coal laminae ; some limestone at 
 
 bottom 12 290 
 
 Limestone, gray 5 295 
 
 Shale, sandy, micaceous, gray 11 306 
 
 Sandstone, micaceous, gray to white, laminated, and shale, 
 
 gray 12 318 
 
 Sandstone, white 16 334 
 
 Sandstone, gray and red; limestone and black shale (pos- 
 sibly caved) 6 340 
 
 Sandstone, micaceous ; fine to coarse grained, white, shaly 
 
 at top 56 396 
 
 Sandstone, white and gray ; shale, some calcareous in 
 
 lower part 8 404 
 
 Shale, light, dark gray, and brown ; sandstone, fine grained 3 407 
 
 Sandstone, micaceous, fine to coarse grained, white to gray 33 440 
 
 Sandstone, grains coarse and rounded; shale, dark 10 450 
 
 Sandstone, micaceous, fine to coarse grained, white, gray 
 
 at top and bottom, calcareous at base 78 528 
 
 Shale, dark gray to black; some sandstone (possibly 
 
 caved ) 7 535 
 
 Shale, dark ; sandstone, white ; limestone 11 546 
 
 Shale, gray ; sandstone, gray and red 6 552 
 
 Shale, gray ; sandstone, micaceous, white 6 558 
 
 Sandstone, coarse grained, white 6 564 
 
 Sandstone, micaceous, white and gray ; shale, dark and red 10 574 
 
 Sandstone, brown, yellow, white, pink, and purple 11 585 
 
 Sandstone, fine grained, white 40 625 
 
 Mississippian system 
 Chester series 
 
 Kinkaid formation 
 
 Limestone, light to dark gray; sandstone (possibly caved 
 
 in part ) 30 655 
 
 Degonia formation 
 
 Sandstone, fine grained ; a very little limestone 25 680 
 
 Clore formation 
 
 Limestone, argillaceous, dark; shale, dark, some red 35 715 
 
 Palestine formation 
 
 Sandstone, micaceous, dark gray; shale, dark to black.. 23 738 
 
WELL LOGS 19 
 
 Menard formation 
 
 Shale, red, brown, black, greenish, and bluish 19 757 
 
 Limestone, oolitic, fossiliferous, and shale, dark gray, 
 
 black, and red 13 770 
 
 Shale, dark bluish-gray and red; some limestone , 12 782 
 
 Limestone, gray, fossiliferous, oolitic; shale, light to dark 
 
 gray 10 792 
 
 Shale, red and black; limestone; sandstone, fine-grained, 
 
 greenish 6 798 
 
 Limestone, white to gray, fossiliferous; shale, dark gray 
 
 to black 34 832 
 
 Vienna formation 
 
 Shale, dark gray, bluish-gray, and greenish-gray to black, 
 fossiliferous ; some limestone, fossiliferous, except at 
 874 to 890 feet ; sandstone, fine-grained, at 880 to 886 86 918 
 
 Tar Springs formation 
 
 Sandstone, fine-grained, and shale, dark to black, hard... 12 930 
 
 Sandstone, fine-grained, gray to white 18 948 
 
 Glen Dean formation 
 
 Shale, dark bluish-gray to greenish black ; some limestone 17 965 
 
 Limestone, gray, fossiliferous, oolitic, shale, dark gray 
 
 to black 72 1037 
 
 Shale, calcareous, red and green 28 1065 
 
 Golconda formation 
 
 Shale, dark gray to black; limestone, light to dark gray. . 15 1080 
 
 Limestone, light gray, oolitic; shale, dark gray to black.. 20 1100 
 
 Shale, calcareous, dark gray to black, fossiliferous 27 1127 
 
 Limestone, gray, fossiliferous ; shale, dark gray 7 1134 
 
 Shale, calcareous, carboniferous, dark gray, fossiliferous ; 
 
 some limestone 18 1152 
 
 Limestone, shaly, gray, fossiliferous, oolitic; shale, gray.. 11 1163 
 
 Shale, calcareous, dark gray, fossiliferous 35 1198 
 
 Limestone, shaly, light gray, and shale, black 20 1218 
 
 Shale, red 15 1233 
 
 Shale, black, and limestone 9 1242 
 
 Shale, red ; some limestone 15 1257 
 
 Cypress formation 
 
 Sandstone and red shale 43 1300 
 
 Sandstone, fine-grained, brown; contains salt water 40 1340 
 
 Paint Creek formation 
 
 Limestone ; sandstone, fine-grained, brown (probably 
 
 caved) 10 1350 
 
 Limestone, dark brown 10 1360 
 
 Limestone, dark reddish-brown, and shale, red 10 1370 
 
20 ILLINOIS PETROLEUM 
 
 (3) Log 3 of Midvalley Oil Company well, Sophia Dry farm. Well No. 1, SW. l A sec. 29, 
 
 T. 5 S., R. 2 W. 
 Elevation, 421 feet 
 
 Thickness Depth 
 
 Feet Feet 
 Pleistocene system 
 
 "Mud," yellow 10 10 
 
 "Mud," yellow, and gravel 20 30 
 
 Gravel 5 35 
 
 Till, dark gray, and gravel IS 50 
 
 "Mud," dark, and gravel '. . . . 10 60 
 
 "Mud," dark gray 20 80 
 
 Sand and gravel 20 100 
 
 Pennsylvanian system 
 
 Shale, white to dark 75 175 
 
 Shale, bituminous, black 5 180 
 
 Shale, white to gray 65 245 
 
 Shale, black 10 255 
 
 Shale, white to dark 50 305 
 
 Shale, sandy, micaceous, light to dark gray 30 335 
 
 Sandstone, coarse-grained, dark gray 30 365 
 
 Shale, dark 10 375 
 
 Shale, sandy, dark, hard 10 385 
 
 Sandstone, micaceous, mostly very fine-grained and white 
 
 except at base 85 470 
 
 Shale, white 20 490 
 
 Sandstone, coarse-grained, white 45 535 
 
 Shale, sandy, light gray 15 550 
 
 Sandstone, fine- to very coarsegrained, gray, hard 40 590 
 
 Shale, sandy, white 5 595 
 
 Sandstone, fine-grained, light gray to pinkish-white 30 625 
 
 Sandstone, conglomeratic, coarse-grained, brown 40 665 
 
 Mississippian system 
 Chester series 
 
 Degonia formation 
 
 Shale, gray 10 675 
 
 Sandstone, mostly fine-grained, gray, pinkish-white, and 
 
 brown at base 25 700 
 
 Clore formation 
 
 Limestone andi shale 5 705 
 
 Shale, dark gray 25 730 
 
 Limestone and shale 5 735 
 
 Menard formation 
 
 Shale, calcareous, dark and greenish 55 790 
 
 Limestone and shale 55 845 
 
 Compiled from samples studied by R. S. Blatchley; correlated by L. E. Workman. 
 
WELL LOGS 21 
 
 Vienna formation 
 
 Shale, gray '. 45 890 
 
 Shale, dark to black, hard 5 895 
 
 Limestone 10 905 
 
 Shale, dark to black, hard 15 920 
 
 Tar Springs formation 
 
 Sandstone, hard 5 925 
 
 Shale, dark, hard 5 930 
 
 Sandstone, hard 15 945 
 
 Shale, black, and sandstone 30 975 
 
 Sandstone, fine-grained, white 20 995 
 
 Glen Dean formation 
 
 Shale, black ; limestone, white 5 1000 
 
 Limestone, fine-grained, brown to gray; some shale at 
 
 1010 to 1025 feet 45 1045 
 
 Shale, black 5 1050 
 
 Limestone 5 1055 
 
 Shale, black and red 35 1090 
 
 Golconda formation 
 
 Limestone, brown ; shale, red 20 1110 
 
 Limestone and shale, gray and black, hard, laminated.... 15 1125 
 
 Limestone, gray 5 1 130 
 
 Shale, dark 10 1140 
 
 Limestone 10 1 150 
 
 "Rock." red, and limestone 10 1160 
 
 Shale, black, hard, laminated 5 1165 
 
 Shale, gray 25 i 190 
 
 Shale, gray to red, and limestone 25 1215 
 
 Sandstone, hard ; shale, red (possibly caved) 5 1220 
 
 Sandstone, fine-grained, white 5 1225 
 
 Shale, red 10 1235 
 
 Shale 20 1255 
 
 Cypress formation 
 
 Sandstone, fine-grained, white, gray, dark, orange, and 
 
 light brown 80 1335 
 
 Paint Creek formation 
 
 Shale, dark, hard, laminated 30 1365 
 
 Limestone, white, crystalline 40 1405 
 
 Shale, red and gray 5 1410 
 
 Limestone, white 10 1420 
 
 Yankeetown formation 
 
 Sandstone, fine-grained, white, gray and brown 35 1455 
 
 Renault formation 
 
 Limestone, gray 15 1470 
 
 Sandstone, calcareous, gray, hard 10 1480 
 
 Limestone, fine-grained, brown 5 1485 
 
 Sandstone, highly calcareous, fine-grained, brown 25 1510 
 
 Shale, calcareous 10 1520 
 
22 ILLINOIS PETROLEUM 
 
 Aux Vases formation 
 
 Shale, sandy, fine-grained 20 1540 
 
 Sandstone, very fine-grained, light-colored 80 1620 
 
 Meramec series 
 
 Ste. Genevieve formation 
 
 Shale, sandy, calcareous 5 1625 
 
 Limestone, and shale 5 1630 
 
 Sandstone, calcareous, shaly 5 1635 
 
 Limestone, shaly, white 15 1650 
 
 Limestone, white, hard, oolitic 10 1660 
 
 Water and casing record 
 
 Fresh water 
 Set 12j/2-inch casing- 
 Fresh water sufficient only for drilling 
 Hole full of fresh water 
 Set 12^-inch casing 
 
 Hole full of fresh water ; casing pulled and hole reamed to 625 feet 
 Set 8j4-inch casing 
 Hole full of salt water 
 More salt water; hole reamed to set 8;4-inch casing at 1000 feet 
 
 85-95 
 
 feet 
 
 105 
 
 feet 
 
 360-415 
 
 feet 
 
 415-470 
 
 feet 
 
 560 
 
 feet 
 
 610-625 
 
 feet 
 
 661 
 
 feet 
 
 680-700 
 
 feet 
 
 950-1000 
 
 feet