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Lithostratigraphy: Kewanee Group >>Carbondale Formation >>Roodhouse Coal Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Desmoinesian Series
Allostratigraphy: Absaroka Sequence

Primary source

Willman, H. B., Elwood Atherton, T. C. Buschbach, Charles Collinson, John C. Frye, M. E. Hopkins, Jerry A. Lineback, and Jack A. Simon, 1975, Handbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.

Contributing author(s)

M. E. Hopkins and J. A. Simon


Original description

The Roodhouse Coal Member of the Carbondale Formation (Siever, in Wanless, 1956, correlation chart, pl. 1).


Named for Roodhouse, Greene County.

Other names


Type section

Type location

Roodhouse is near the type section (NW 21, 12N-11W) (Kosanke et al., 1960, p. 35, 47).

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

It directly overlies the Pleasantview Sandstone, without an underclay.

Extent and thickness


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.




Well log characteristics


Age and correlation

It probably correlates with the Kerton Creek Coal in Fulton County.

Environments of deposition

Economic importance



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

Stratigraphic Code Geo Unit Designation