Historical:Scottville Limestone Member
Lithostratigraphy: McLeansboro Group >>Modesto Formation >>Scottville Limestone Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Desmoinesian Series
Allostratigraphy: Absaroka Sequence
Authors
M. E. Hopkins and J. A. Simon
Name Origin
The Scottville Limestone Member of the Modesto Formation (Payne, 1942, p. 4) is named for Scottville, Macoupin County.
Type Section
The type section consists of exposures along Apple Creek near the town (W 1/2 SW 16, 12N-9W) (Wanless, 1956, p. 11).
Correlation
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.
Description
It is a light gray, fine-grained limestone.
Fossils
The Scottville locally contains abundant Osagia, phylloid algae, and a diverse open-marine fauna.
References
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.
ISGS Codes
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