Historical:Goreville Limestone Member
Elwood Atherton, Charles Collinson, and Jerry A. Lineback
The Goreville Limestone Member of the Kinkaid Formation (Swann, 1963, p. 43-44), the uppermost member, is named for Goreville, Johnson County.
The type section of the Goreville Limestone Member is in a quarry at Buncombe, 4 miles south of Goreville (SW SW SE 10, and NW NW NE 15, 12S-2E) (fig. M-1C), where the member is 40.5 feet thick.
Extent and Thickness
It is about 30 feet thick, but it ranges from about 25 feet in the north to nearly 50 feet in the south.
The Goreville is a resistant and relatively uniform, massive limestone. Most of the limestone is brownish gray but some of it is light gray or gray. It is very fine grained but includes coarse fossil grains, mostly crinoidal fragments. It is cherty to slightly cherty nearly everywhere.
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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