Historical:Scottsburg Limestone Member
Elwood Atherton, Charles Collinson, and Jerry A. Lineback
The Scottsburg Limestone Member of the Menard Formation (Swann, 1963, p. 38-39) is named for Scottsburg, Caldwell County, Kentucky.
The type section of the Scottsburg Limestone Member is located 3 miles northeast of Scottsburg, Caldwell County, Kentucky in Walche's cut on the Illinois Central Railroad.
The Scottsburg Limestone Member has commonly been referred to as the "Massive Menard."
Extent and Thickness
The member is 30-40 feet thick in the far south, but it thins northward to about 5 feet.
Much of the limestone is dense and fine grained to lithographic. Some beds are dolomitic.
SWANN, D. H., 1963, Classification of Genevievian and Chesterian (Late Mississippian) rocks of Illinois: Illinois State Geological Survey Report of Investigations 216, 91 p.
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