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

ILLINOIS BASIN COAL RESOURCES
County
No.
1 we].
I
Control
No.
TABLE 11.-DATA OK POSSIBLY JYORRABLE COAL BEDS IN RICHLAND COUNTY
Location
T. R. Sec.
Company and farm
name and No.
Seaboard
Kimmel No. 1
Pure Oil Co.
Murvin No. R-2
Total
depth
logged
Coal
bed
No.
Depth
ft.
Thickness
of coal
ft.
Te~as Co.
Hasslinger No. 1
Gulf Refining Co.
Ritter No. 1
Carter Oil Co.
Winters No. 2
Lre R. Trustees
Miller hTo. 1
Pure Oil Co.
Myers No. 1
Livingston
Holtz No. 1
Sohio Oil Co.
Heap No. 1
appropriate position. The cuttings consist
of fragments of white, grayish-brown, and
dark gray, argillaceous, and pyritic limestone.
Below the limestone, and separated
from it by 2 or 3 feet of dark gray shale,
is a thin bed of coal.
Limestone 350 feet below No. 5 cod
bed.-A thin bed of limestone about 400
feet below No. 6 coal bed (350 feet below
No. 5) was penetrated in control drill holes
Nos. 3, 34, and 91. What appears to be
a limestone at the same position shows up
here and there in electric logs of drill holes
in various parts of the county. It may
possibly represent the Curlew limestone of
southern Illinois,l"ut such a correlation
is of little more value than simply to indicate
the general position of the bed. The
cuttings are those of a very dense limestone,
brown to buff and mottled white in part.
butt^, Charles, op. cit.
STRUCTURE OF THE
FORMATIONS
Richland County lies west of the LaSalle
anticline, the axis of which crosses Lawrence
County east of the deepest part of
the Pennsylvanian basin (fig. 25). The
regional rise to the east on the flank of the
LaSalle anticline begins at about the position
of the minus 550-foot structure contour
showing the altitude of the No. 6 coal
bed (pl. 10) in Ts. 5, 4, and 3 N., and at
about the position of the minus 500-foot
contour in T. 2 N.
In a narrow belt on the east side of the
county there is a relatively sharp rise eastward
at the rate of about 50 feet per mile
for about 2 miles. Westward, on the other
hand, the regional dip carries the coal bed
downward only about 100 feet in the remaining
width of the county. In this distance
of 18 to 20 miles the structure is
irregular but is dominated by a general