Pond Creek Coal Member
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.
M. E. Hopkins and J. A. Simon
Pond Creek Coal Member (Kosanke et al., 1960, p. 37).
Named for Pond Creek in Williamson County.
It previously was informally called the Second Cutler Rider coal.
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).
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.
Well log characteristics
Age and correlation
It may be equivalent to the Rock Branch Coal of southwestern Illinois.
Environments of deposition
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.
|Stratigraphic Code||Geo Unit Designation|