Wise Ridge Coal Member
Lithostratigraphy: Kewanee Group >>Spoon Formation >>Wise Ridge 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 Wise Ridge Coal Member of the Spoon Formation (Kosanke et al., 1960, p. 33).
Derivation
Named for Wise Ridge, a hill about 3 miles west of the type section.
Other names
It previously was called the Stonefort Coal (Wanless, 1939, p. 30, 103).
History/background
Type section
Type location
The type section is a roadcut in Stonefort, Williamson County (NE SE 25, 10S-4E).
Type author(s)
Type status
Reference section
Reference location
Reference author(s)
Reference status
Stratigraphic relationships
It is commonly separated from the Stonefort Limestone (above) by 1-2 feet of black fissile shale.
Extent and thickness
The coal is lenticular but is widely present in southern Illinois. It is generally less than 3 feet thick and is very thin at some places.
Lithology
Core(s)
Photograph(s)
Contacts
Well log characteristics
Fossils
Age and correlation
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.
WANLESS, H. R., 1939, Pennsylvanian correlations in the Eastern Interior and Appalachian coal fields: Geological Society of America Special Paper 17, 130 p.
ISGS Codes
| Stratigraphic Code | Geo Unit Designation |
|---|---|
 t-wr |