Historical:Roodhouse Coal Member
Lithostratigraphy: Kewanee Group >>Carbondale Formation >>Roodhouse coal bed
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Desmoinesian Series
Allostratigraphy: Absaroka Sequence
Authors
M. E. Hopkins and J. A. Simon
Name Origin
The Roodhouse Coal Member of the Carbondale Formation (Siever, in Wanless, 1956, correlation chart, pl. 1) is named for Roodhouse, Greene County.
Type Section
Roodhouse is near the type section (NW 21, 12N-11W) (Kosanke et al., 1960, p. 35, 47).
Correlation
It probably correlates with the Kerton Creek Coal in Fulton County.
Stratigraphic Position
It directly overlies the Pleasantview Sandstone, without an underclay.
Description
The coal is canneloid and, like the Kerton Creek Coal of southern Fulton County, occurs immediately above a channel facies of the Pleasantview Sandstone, apparently in channels that were not completely filled by the sandstone (Wanless, 1957, p. 98). The coal is as much as 5 feet thick near the center of the channels but is not present outside them.
References
KOSANKE, R. M., J. A. SIMON, H. R. WANLESS, and H. B. WILLMAN, 1960, Classification of the Pennsylvanian strata of Illinois: Illinois State Geological Survey Report of Investigations 214, 84 p.
WANLESS, H. R., 1956, Classification of the Pennsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.
WANLESS, H. R., 1957, Geology and mineral resources of the Beardstown, Glasford, Havana, and Vermont Quadrangles: Illinois State Geological Survey Bulletin 82, 233 p.
ISGS Codes
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