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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 Inglefield Sandstone Member of the Modesto Formation (Fuller and Ashley, 1902, p. 3).
Named for Inglefield, Vanderburgh County, Indiana.
The type locality consists of exposures in a railroad cut south of the town of Inglefield.
The sandstone occurs above the Chapel (No. 8) Coal and below the Womac Coal (Andresen, 1961).
It is known primarily in eastern Illinois, but it was reported by Andresen to split into two distinct sandstones in southwestern Illinois, the lower unit occurring below the Carlinville Limestone. The Inglefield Sandstone locally exceeds 80 feet in channels oriented south-southwest, but it is relatively widespread as a much thinner sheet sandstone in most of the Illinois Basin.
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ANDRESEN, M. J., 1961 , Geology and petrology of the Trivoli Sandstone in the Illinois Basin: Illinois State Geological Survey Circular 316, 31 p.<br>
FULLER, M. L., and G. H. ASHLEY, 1902, Ditney Quadrangle: USGS Geologic Atlas Folio 84, 8 p.
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