Historical:Galum Limestone Member
Lithostratigraphy: Kewanee Group >>Carbondale Formation >>Galum Limestone Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Desmoinesian Series
Allostratigraphy: Absaroka Sequence
Authors
M. E. Hopkins and J. A. Simon
Name Origin
The Galum Limestone Member of the Carbondale Formation (Bell et al., 1931, p. 3) is named for Galum Creek, Perry County.
Type Section
The type section occurs along Galum Creek (near cen. N line 13, 6S-4W) (Wanless, 1956, p. 11).
Extent and Thickness
It is recognized only in and near Perry County, and is seldom more than 3 feet thick.
Stratigraphic Position
It is overlain by the underclay of the Danville (No. 7) Coal and underlain by a few feet of greenish gray shale that separates the Galum from the Bankston Fork Limestone.
Description
It is generally an impure, argillaceous, nodular, nonfossiliferous limestone.
References
BELL, A. H., C. G. BALL, and L. C. MCCABE, 1931, Geology of the Pinckneyville and Jamestown areas, Perry County, Illinois: Illinois State Geological Survey Illinois Petroleum 19, 22 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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