Historical:Pond Creek Coal Member
Lithostratigraphy: McLeansboro Group >>Modesto Formation >>Pond Creek Coal Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Desmoinesian Series
Allostratigraphy: Absaroka Sequence
Authors
M. E. Hopkins and J. A. Simon
Name Origin
The Pond Creek Coal Member (Kosanke et al., 1960, p. 37) is named for Pond Creek in Williamson County.
Type Section
The type section of the Pond Creek Coal is at a depth of 125 feet in Consolidated Coal Company drill hole 91 (SW NE NE 21, 8S-3E).
Other Names
It previously was informally called the Second Cutler Rider coal.
Correlation
It may be equivalent to the Rock Branch Coal of southwestern Illinois.
Extent and Thickness
The Pond Creek is more extensive than either the De Graff Coal or the Lake Creek Coal, which, respectively, lie just a few feet above and below the Pond Creek, but the Pond Creek is recognized only in southern Illinois.
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.
ISGS Codes
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