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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 Galum Limestone Member of the Carbondale Formation (Bell et al., 1931, p. 3).
Named for Galum Creek, Perry County.
The type section occurs along Galum Creek (near cen. N line 13, 6S-4W) (Wanless, 1956, p. 11).
It is overlain by the underclay of the Danville (No. 7) Coal and underlain by a few feet of greenish gray shale that separates the Galum from the Bankston Fork Limestone.
It is recognized only in and near Perry County, and is seldom more than 3 feet thick.
It is generally an impure, argillaceous, nodular, nonfossiliferous limestone.
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BELL, A. H., C. G. BALL, and L. C. MCCABE, 1931, Geology of the Pinckneyville and Jamestown areas, Perry County, Illinois: Illinois State Geological Survey Illinois Petroleum 19, 22 p.<br>
WANLESS, H. R., 1956, Classification of the Pennsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.
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