New Haven 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 New Haven Coal Member of the Modesto Formation (Kosanke, 1950, p. 88-89).
Named for New Haven, Gallatin County.
The type section is an outcrop along the Little Wabash River (SE SW SE 17, 7S-10E; incorrectly given as NW 19, 7S-10E, by Kosanke, 1950).
The New Haven Coal Member is uppermost named member of the Modesto Formation.
Extent and thickness
The New Haven is a thin coal, generally separated by only 1-2 feet of black fissile shale from the overlying Shoal Creek Limestone Member of the Bond Formation. It is widespread in southeastern, southwestern, and central Illinois and is absent in parts of eastern Illinois.
Well log characteristics
Age and correlation
It is correlated with a thin coal below the La Salle Limestone in northern Illinois and with the Parker Coal Member of Indiana.
Environments of deposition
KOSANKE, R. M., 1950, Pennsylvanian spores of Illinois and their use in correlation: Illinois State Geological Survey Bulletin 74, 128 p.
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