Historical:Shelbyville Coal Member

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Handbook of Illinois Stratigraphy
Series Bulletin 95
Author H. B. Willman, Elwood Atherton, T. C. Buschbach, Charles Collinson, John C. Frye, M. E. Hopkins, Jerry A. Lineback, Jack A. Simon
Date 1975
Link Web page
PDF PDF file
Store ISGS Store

Lithostratigraphy: McLeansboro Group >>Mattoon Formation >>Shelbyville Coal Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Missourian Series
Allostratigraphy: Absaroka Sequence


M. E. Hopkins and J. A. Simon

Name Origin

The Shelbyville Coal Member of the Mattoon Formation (Broadhead, 1875, p. 169-171, used the term "Shelby"; Worthen, 1875, p. 49, used the term "Shelbyville") is named for Shelbyville, Shelby County.

Type Section

The type section is in natural exposures and in drift and shaft mines in the vicinity of Shelbyville (11N-3-4E) (Kay, 1915, p. 215, 216).

Extent and Thickness

The coal is locally as much as 3 feet thick and can be traced in the subsurface in most of the area in which the Mattoon Formation occurs.

Stratigraphic Position

It is normally 80-120 feet below the Omega Limestone.


BROADHEAD, G. C., 1875, Geology of Shelby County: Geological Survey of Illinois, v. 6, p. 163-174.
KAY, F. H., 1915, Coal resources of District VII (Coal No. 6 west of Duquoin anticline): Illinois State Geological Survey Mining Investigations 11, 233 p.
WORTHEN, A. H., 1875, Geology and paleontology: Geological Survey of Illinois, v. 6, 532 p.

ISGS Codes

Stratigraphic Code Geo Unit Designation