Historical:Scottville Limestone Member
M. E. Hopkins and J. A. Simon
The Scottville Limestone Member of the Modesto Formation (Payne, 1942, p. 4) is 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).
It is probably equivalent to part of the West Franklin Limestone of southeastern Illinois.
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.
The Scottville locally contains abundant Osagia, phylloid algae, and a diverse open-marine fauna.
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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