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90 ILLINOIS BASIN COAL RESOURCES In sec. 1 of the same township the altitude of No. 6 coal bed in the two diamonddrill holes (Nos. 24 and 23) is 191 and 208 feet above sea level, respectively, whei-eas in a third hole (No. 95) to the east, it is 15 feet below sea level, representing a displacement of 206 to 223 feet. The omission of beds in the drill hole, sec. 7, T. S S., R. 9 E. (No. 165), and differences in altitude of strata in secs. 1, 13, and 24, T. 9 S., and R. 8 E., can better be explained by faulting than by folding. Between the Herald fault on the west and the Maunie fault on the east is a downdropped block or graben to which the names Wabash Valley and the New Harmony graben are applied here.24 The graben has a maximum width of 3 miles in Gallatin County and the boundary faults converge toward a point about 3 miles south of the north line of the county in sec. 15, T. 8 S., R. 9 E. Neither fault has been observed at the surface. The existence of the Herald fault is indicated by a drill hole (McGraw-Dagley No. 1) in sec. 2, T. 7 S., R. 9 E., White County, where the altitude of No. 6 coal bed is 466 feet below sea level as compared with 240 feet below sea level in sec. 11 ( Czrter-Dagley No. 1 ) . The Carter- Dapley No. 1 starts in the downthrow block an? passes into the upthrosv block at a depth of 450 feet. The exact position of the fault has not been determined becau~e drill holes to the east are entirely in the dov nthrow block, drill holes to the west are in the upthrow block, and drill holes adjacent to the fault plane do not penetrate deep enouqh to yield critical data (Cartes- Dagley No. 1, total depth, 1516; McGraw- Daqley No, 1 total depth, 1876). 'rhe southernmost point to which the Hrrald fault has been traced is in secs, 22. 23, 26,27. T. 7 S., R. 9 E , Gallatin County, where drilling is indicative of faulting but dc,~ not determine the exact position of the fa ~ lt plane. The f2rthest southern extension of the Waunie fault on the basis of present data is in secs. 3 and 10, T. 7 S., R. 10 E., White County. In adjacent drill holes, 660 feet apart, the altitude of No. 6 coal bed is - 185 feet (Sohio No. B3-Union Central Life Z4Adopting terminology in common use by oil company zeologists. Ins. Co., sec. 3) and -361 feet (Sohio No. 2A-Union Central Life Ins. Co., sec. 3). In Sohio No. 1A (Union Central Life Ins. Co., sec. lo), 1320 feet south of Sohio No. 2A, the altitude of No. 6 coal bed is -367. The three drill holes, Sohio IA, 2A, and B3, cut the fault plane at depths of 1130, 1700, and 420 feet respectively. Here the fault plane strikes N. 13 E. and dips 64 degrees N. 77 W. and the displacement of No. 6 coal bed is 176 feet. The Inman East fault zone runs in a general northeast-southwest direction and cuts the eastern edge of the Inman East pool (figs. 13 and 14). Transections of the major fault plane by drill holes indicate that it dips southeast. In hole No. 199, sec. !I, T. 8 S., R. 10 E., the major fault is cut at an altitude of -210 feet ; in hole No. 19s in the same section 660 feet south, it is cut at an altitude of -751 feet; and in hole No. 196 in the same section 940 feet southwest of hole No. 198, it is cut at an altitude of -341 feet. On the basis of these data it is determined that the strike of the major fault is N. 30 degrees E., and the dip required to obtain these differences in altitude is 60 degrees southeast. A drill hole in the northwest corner of sec. 8, T. 9 S., R. I0 E. (No. 315), cuts the major fault of the Inman East fault zone at approximately 2500 feet and a vertical 'displacement of No. 6 coal bed of 420 feet is indicated. Here the Tar Springs formatioa lies in contact with what is probably the Paint Creek formation, and the Glen Dean, Hardinsburg, Golconda, and probably Cynress formations are absent because of faulting. IGNEOUS INTRUSIONS Igneous rocks occur fairly frequently in Saline where they have been encountered in a number of coal mines. Igneous rock occurs closest to Gallatin County in an abandoned mine between Eldorado and Equality on the Louisville and Nashville Railroad (sec. 34, T. S S., R. 7 E.). In Saline County the rocks occur in the form of dikes, with a width in one ~ltine of about 300 feet. The dikes are dark " Cady, G. II., Coal resources of District V (Saline and Gnl1;ttin co~lntics): 'Illinois Geol. Survey I\/Iin. Inv. Bull. 19, pp. 56-61, 1919.
ELECTRIC LOG MILLER'S LOG FE SELF-POTENTIAL SAMPLE DRlUlffi MlLLlWLTS STUDY TI% , , .4oMV. I 0 $ M 53 t 4JCIMkWE I A HERRIN (NO. 6 COAL w NO. 5A COAL t-----f HARRISBURG (NO. 5) COAL SINCLAIR WY(A(lNG - ISAAC COX NO. I SEC. 24, T. 7 S., R.8 E. LEGEND D SURFACE SILTSTONE LIMESTONE COAL USPWSTONE E~#KE ~U~C*SLATE~~W.UERUY FIG. 17.-Comparison of diamond-drill log and drilling time, cuttings study, electric, and driller's log in Gallatin County. (Fig. 7, Illinois Geol. Survev Rept. Inv. 93, p. 20.) green to nearly black, fine to fairly coarsely In Gallatin County igneous rocks have crystalline socks of the type known as mica been encountered in holes drilled on the peridotite" or some similar variety of basic Omaha dome. They consist of the same inneous rock. type of rock found in Saline County. They do not extend widely at the same strati- 2"ro.gan, R. 11.. Illinois Geol. Surley. Personal comm~~nicatlon.
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SUBSURFACE GEOLOGY AND COAL RESOURC
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ORGANIZATION STATE OF ILLINOIS HON.
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CONTENTS INTRODUCTION BY GILBERT H
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PAGE Structure of Herrin (No. 6) co
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SUBSURFACE GEOLOGY AND COAL RESOURC
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oi the strata below the lower bench
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INTRODUCTION 13 less than 1000 feet
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INTRODUCTION 15 Grateful acknowledg
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INTRODUCTION TABLE 2.-CONTROL DRILL
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INTRODUCTION i I County Sec. T. R.
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Cumberland County 585 725 731 1130
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Jasper County Siltstone 11 ; black
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Sangamon County Wabash County 467 "
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28 ILLINOIS BASIN COAL RESO UKCES t
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30 ILLINOIS BASIN COAL RESOURCES 1
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32 ILLINOIS BASIAT COAL RESOURCES t
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34 ILLINOIS BASIN C09L RESOURCES la
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36 ILLINOIS BASIN COAL RESOURCES gr
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3 5 ILLINOIS BASIN COAL RESOURCES 1
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Page 50 and 51: ILLINOIS BASIN COAL RESOURCES TABLE
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Page 56 and 57: ILLINOIS BASIN COAL RESOURCES EDWAR
Page 58 and 59: TABLE 6.-INTERVALS BETWEEN TOP OF N
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Page 68 and 69: ILLINOIS BASIN COAL RESOURCES TABLE
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Page 74 and 75: ILLIxOIS BASIN COAL RESOURCES
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Page 80 and 81: ILLILVOPS iZASIA7 COAL RESOURCES
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Page 84 and 85: ILLINOIS BASIN COAL RESOURCES FEET
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Page 98 and 99: SUBSURFACE GEOLOGY OF HAMILTON COUN
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Page 120 and 121: GULF REFINIXG COMPA:
Page 122 and 123: ILLINOIS BASIN COAL RESOURCES Count
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Page 126 and 127: __!L APPENDIX OF TABULATED DATA Abb
Page 128 and 129: Total depth: The total depth of the
Page 130 and 131: , -- .- -- ----- - -- I---]=- Locat
Page 132 and 133: Location of Hole I Twp. 1 Range / S
Page 134 and 135: Location of Hole TABULATED DATA ON
Page 136 and 137: t TABULATED DATA ON KEY BEDS CLAY C
Page 138 and 139: TABULATED DATA ON KEY BEDS CLAY COU
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Location of Hole I County Number --
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Location of Hole I Twp. 1 Range Sec
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- -- -- - -- *- - -- -- - -. Locati
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Location of Hole TABULATED DATA ON
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Location of Hole I Twp. Range 1 Sec
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Location of Hole County Number TABU
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TABULATED DATA ON KEY BEDS CLAY COU
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TW~. I Location of Hole -- Range SI
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Location of Hole County Number TY p
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Location of Hole I== TABULATED DATA
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Twp. 1 iiange 1 Sec. TABULATED DATA
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Twp. -- 1N 1N 1N Location of Hole R
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-- TABULATED DATA ON KEY BEDS Locat
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TABULATED DATA ON KEY BEDS EDWARDS
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Location of Hole Twp. Range Sec. Nu
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TABULATED DATA ON KEY BEDS EDWARDS
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Location of Hole I I Twp. Range Sec
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' Location of Hole Twp. Range Sec.
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Location I of I Hole - - -- Twp. Ra
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PENNSYLVANIAN SYSTEM IN ILLINOIS BA
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-- TABULATED DATA ON KEY BEDS -- GA
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TABULATED DATA ON KEY BEDS GALLATIN
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TABULATED DATA ON KEY BEDS I GALLAT
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Location of Hole I L p . Range iec.
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- Twp. Location o Hole Rang< Sec. /
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Location of Hole 1 1 1 Twp. Range S
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-- Location of Hole I F Twp. I Rang
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Twp. Location of Hole I Range Sec.
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TABULATED DATA ON KEY BEDS Location
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Twp. 3 8 Location of Hole TABULATED
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Twp. I TABULATED DATA ON KEY BEDS 0
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TABULATED DATA ON KEY BEDS 10 HAMIL
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Location of Hole I Twp. 1 Range 1 S
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TABULATED DATA ON KEY BEDS HAMILTON
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SYLVANlAM SYSBE A. - - 'aw ek m~c r
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TABULATED DATA ON KEY BEDS HAMILTON
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p-p-ppppp - -- Location of Hole I r
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Location of Hole Twp. Range Sec. TA
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--- -- -- -- - Location of Hole . -
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IAN SYSTEM IN ILLINOiS BASIN
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PENNSYLVANIAN SYSTEM IN lLLlNOlS BA
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I- PENNSYLVANIAN SYSTEM IN ILLINOIS
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1 TIP. Range Sec. . -.-- -- TABULAT
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-f- T I Q Be Q ~n rm O\ - 3 ~ o m+
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NSYLVANIAN SYSTEM IN ILLINOIS BASIN
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2N 2H 1 county TABULATED DATA ON KE
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TABULATED DATA ON KEY BEDS RICHLAND
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Location of Hole Twp. Range Sec. TY
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PENNSYLVANIAN SYSTEM IN ILLlNOlS BA
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Location of Hole - TABULATED DATA O
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'n, (U - ;I Y .- I- L - (U -0 - 2:
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TABULATED DATA ON KEY BEDS Location
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SYSTEM IN /LLINOIS BAS/ - ma now- e
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- - Location I I of Hole TXP. Range
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-. - - --- - - - -- County Number T
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RICHLAND COUNTY 0 9 ot- OV) urn - -
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TABULATED Location of Hole 1 Type I
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