Historical:Flannigan Coal Member
Lithostratigraphy: McLeansboro Group >>Bond Formation >>Flannigan Coal Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Missourian Series
Allostratigraphy: Absaroka Sequence
Authors
M. E. Hopkins and J. A. Simon
Name Origin
The Flannigan Coal Member of the Bond Formation (Newton and Weller, 1937, p. 9) is named for Flannigan Township, Hamilton County.
Type Section
The type section is an exposure along a southwest-flowing tributary of the Middle Fork Saline River (SW NE NE 17, 7S-5E; erroneously reported as 6S-5E by Kosanke et al., 1960).
Correlation
The Flannigan is correlated with the Flat Creek Coal of southwestern Illinois.
Extent and Thickness
In the type area, the Flannigan Coal is about 1 foot thick and is overlain by a thin, black fissile shale. The Flannigan occurs in southeastern and eastern 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.
NEWTON, W. A., and J. M. WELLER, 1937, Stratigraphic studies of Pennsylvanian outcrops in part of southeastern Illinois: Illinois State Geological Survey Report of Investigations 45, 31 p.
ISGS Codes
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