Historical:Bidwell Coal Member
M. E. Hopkins and J. A. Simon
The Bidwell Coal Member of the Spoon Formation (Kosanke et al., 1960, p. 32, 65) is named for Bidwell School in Johnson County.
The type locality is near Bidwell School (NE SE SW 5, 11S-4E).
Extent and Thickness
The Bidwell Coal, although discontinuous, is more widespread than most of the coals in the lower part of the Spoon Formation in southern Illinois and is 4 feet thick in places, although generally thinner. It has been identified in only a few drill holes north of the outcrop belt. The Bidwell has not been recognized in western Illinois.
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.
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