Carlinville 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 Carlinville Limestone Member of the Modesto Formation (Worthen, 1873, p. 290-301).
Named for Carlinville, Macoupin County.
The type section consists of outcrops along Macoupin Creek (SW SW 35, 10N-7W) (Wanless, 1956, p. 11).
Extent and thickness
The limestone is recognized only in part of southwestern Illinois, where it is thick-bedded, up to 5 feet thick.
Well log characteristics
The Carlinville contains an open-marine fauna.
Age and correlation
Environments of deposition
WANLESS, H. R., 1956, Classification of the Pennsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.
WORTHEN, A. H., 1873, Geology and paleontology: Geological Survey of Illinois, v. 5, 619 p.
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