New Haven Coal Member

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Lithostratigraphy: McLeansboro Group >>Modesto Formation >>New Haven Coal Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Missourian Series
Allostratigraphy: Absaroka Sequence

Primary source

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.

Contributing author(s)

M. E. Hopkins and J. A. Simon


Original description

The New Haven Coal Member of the Modesto Formation (Kosanke, 1950, p. 88-89).


Named for New Haven, Gallatin County.

Other names


Type section

Type location

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).

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

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

Economic importance



KOSANKE, R. M., 1950, Pennsylvanian spores of Illinois and their use in correlation: Illinois State Geological Survey Bulletin 74, 128 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation