Scottville Limestone Member

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Lithostratigraphy: McLeansboro Group >>Modesto Formation >>Scottville Limestone Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Desmoinesian Series
Allostratigraphy: Absaroka Sequence

Primary source

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.

Contributing author(s)

M. E. Hopkins and J. A. Simon


Original description

The Scottville Limestone Member of the Modesto Formation (Payne, 1942, p. 4).


Named for Scottville, Macoupin County.

Other names


Type section

Type location

The type section consists of exposures along Apple Creek near the town (W 1/2 SW 16, 12N-9W) (Wanless, 1956, p. 11).

Type author(s)

Type status

Reference section

Reference location

Reference author(s)

Reference status

Stratigraphic relationships

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

Economic importance



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

Stratigraphic Code Geo Unit Designation