Scottville Limestone Member
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 Scottville Limestone Member of the Modesto Formation (Payne, 1942, p. 4).
Named for Scottville, Macoupin County.
The type section consists of exposures along Apple Creek near the town (W 1/2 SW 16, 12N-9W) (Wanless, 1956, p. 11).
Extent and thickness
The Scottville Limestone occurs in southwestern Illinois, where it is as much as 3 feet thick.
It is a light gray, fine-grained limestone.
Well log characteristics
The Scottville locally contains abundant Osagia, phylloid algae, and a diverse open-marine fauna.
Age and correlation
It is probably equivalent to part of the West Franklin Limestone of southeastern Illinois.
Environments of deposition
PAYNE, J. N., 1942, Structure of Herrin (No. 6) coal bed in Macoupin County, eastern Jersey and Greene, southeastern Scott, and southern Morgan and Sangamon Counties: Illinois State Geological Survey Circular 88,46 p.
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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