Shawneetown Coal Member
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
Name
Original description
The Shawneetown Coal Member of the Carbondale Formation (Kosanke et al., 1960, p. 34-35).
Derivation
Named for Shawneetown, Gallatin County.
Other names
History/background
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.
Lithology
It is overlain by dark shale and underlain by underclay.
Core(s)
Photograph(s)
Contacts
Well log characteristics
Fossils
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
Remarks
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.
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 |
---|---|