Lithostratigraphy: Mammoth Cave Limestone Megagroup >>Salem Limestone >>Fults Member
Chronostratigraphy: Paleozoic Erathem >>Mississippian Subsystem >>Valmeyeran Series
Allostratigraphy: Kaskaskia Sequence
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.
Elwood Atherton, Charles Collinson, and Jerry A. Lineback
The Fults Member of the Salem Limestone (Baxter, 1960a, p. 22-24).
Named for Fults, Monroe County.
The type section of the Fults Member is in the bluffs three-fourths of a mile northwest of the town of Fults (SE NE 20, 4S-10W), where the member is 29.4 feet thick.
Extent and thickness
The Fults Member is 25-34 feet thick in the outcrop area in Monroe and St. Clair Counties.
The Fults Member consists largely of thin- to medium-bedded, fine-grained, silty, cherty, more or less dolomitic limestone, but it contains beds of medium-grained limestone composed of fragmented fossils.
Well log characteristics
Globoendothyra baileyi and Eoendothyranopsis spiroides are common.
Age and correlation
Environments of deposition
BAXTER, J. W., 1960a, Salem Limestone in southwestern Illinois: Illinois State Geological Survey Circular 284, 32p.
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