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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 Shelbyville Coal Member of the Mattoon Formation (Broadhead, 1875, p. 169-171, used the term "Shelby"; Worthen, 1875, p. 49, used the term "Shelbyville").
Named for Shelbyville, Shelby County.
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).
It is normally 80-120 feet below the Omega Limestone.
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.
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BROADHEAD, G. C., 1875, Geology of Shelby County: Geological Survey of Illinois, v. 6, p. 163-174.<br>
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. <br>
WORTHEN, A. H., 1875, Geology and paleontology: Geological Survey of Illinois, v. 6, 532 p.
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