Shawneetown Coal Member

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Lithostratigraphy: Kewanee Group >>Carbondale Formation >>Shawneetown 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 Shawneetown Coal Member of the Carbondale Formation (Kosanke et al., 1960, p. 34-35).


Named for Shawneetown, Gallatin County.

Other names


Type section

Type location

In Shawneetown, the type section is at a depth of 482.6 feet (erroneously given originally as 543.8 feet) in Union Colliery Company drill hole 28 (NW SW NW 23, 9S-9E) (Peppers, 1970, p. 43).

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

It is the upper of two coals in southeastern Illinois lying between the Colchester (No. 2) and Summum (No. 4) Coals that had previously been called Coal 2A.

Extent and thickness

The Shawneetown Coal is persistent in southern and eastern Illinois, but is known to crop out only in a strip mine near Mitchellsville, Saline County. It normally is thin, but in a few scattered drill holes it has been reported to be as much as 8 feet thick.


It is overlain by dark shale and underlain by underclay.




Well log characteristics


Age and correlation

It is correlated with the Lowell Coal of northern and western Illinois and with the Survant Coal Member (IV) in eastern Indiana.

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.
PEPPERS, R. A., 1970, Correlation and palynology of coals in the Carbondale and Spoon Formations (Pennsylvanian) of the northeastern part of the Illinois Basin: Illinois State Geological Survey Bulletin 93, 173 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation