subsurface geology and coal resources of the pennsylvanian system ...

SOHIO PR0;lllClHG COMPANY SEABOARD OIL COMPANY LIVINGSTON COMPANY OHIO OIL COMPANY
HEAP NO. I KIMMEL NO.1 HOLTZ N0.I STEVENS NO I
RiCHLAND COUNTY NO B RtCHLhND COUNTY NO 7 RICHLAND C O U N ~ Y NO I RICHLAND COUWTY NO 46
SEC ID, T 3 N .R.II E. SEC 32. T 3 N . R 14 W IEC (7, i 2 N . R 14 W SEC SO. T Z Y . 1 14 W
FIG. 29.-Graphic representation of the complete or partial stratigraphic succession and of
electric logs of eight drill holes distributed from north to south across Richland County in Ts.
10 and 11 E., and 14 W., from a short distance above West Franklin limestone to a short distance
below "No. 4" coal bed.
"No. 4" coal bed (fig. 30)) the few control
holes logged to this depth penetrated a thin
bed of coal underlying a thin limestone.
The cuttings indicate that the limestone is
white to light gray, dense, and fairly pure.
The coal bed can usually be recognized in
electric logs by a pattern which is very
similar to that characteristic of the "No.
7" coal bed. This coal bed has a stratigraphic
position approximately that of the
LaSalle ("No. 2") coal bed of northern
Illinois, but existing evidence do,es not justify
more than a tentative correlation with this
bed.
Cod beds 235 and 2'10 feet below No. 5
("DekovenJJ and "DavisJJ beds).-A coal
bed having an average thickness of 3 feet,
and locally possibly reaching 6 feet, was
encountered 250 to 270 feet be1o.t~ No. 5
coal bed in four control drill holes (Nos.
2, 3, 9, and 11). In two of these holes
(Nos. 3 and 9) a thinner coal bed lies 20
to 30 feet higher. The lo,wer coal bed probably
represents the Davis coal bed of
southern Illinois and the upper one the
Dekoven bed,'' the correlations being tentative
pending the possibility of definite verificat~on.
Limesto~ze 300 to 320 feet below No. 5
coal bed.-In three control drill holes (Nos.
3, 8, 106) a limestone 2 to 3 feet thick was
penetrated 300 to 320 feet below No. 5
coal bed and about 50 feet below the "Davis"
bed. The Stonefort limestone of southern
Illinois occupies a similar position with
respect to the Davis coal bed.'' Electric
logs of boi-ings at various positions in the
county show a characteristic pattern indicative
of the presence of limestone at the
1" Rlltt~, Cha~les, op. cit.
llI'lenhest. Lloyd G.. Fusulinellas from the Stonefort
limestone member of the Tradewater formation: Jour.
Paleontology, vol. 2, No. I, pp. 70-71, 1928.