Flannigan 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
The Flannigan Coal Member of the Bond Formation (Newton and Weller, 1937, p. 9).
Named for Flannigan Township, Hamilton County.
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).
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.
Well log characteristics
Age and correlation
The Flannigan is correlated with the Flat Creek 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.
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.
|Stratigraphic Code||Geo Unit Designation|