Kidd Member
Lithostratigraphy: Mammoth Cave Limestone Megagroup >>Salem Limestone >>Kidd Member
Chronostratigraphy: Paleozoic Erathem >>Mississippian Subsystem >>Valmeyeran Series
Allostratigraphy: Kaskaskia Sequence
Primary source
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.
Contributing author(s)
Elwood Atherton, Charles Collinson, and Jerry A. Lineback
Name
Original description
The Kidd Member of the Salem Limestone (Baxter, 1960a, p. 19-22; Lineback, 1972, p. 5).
Derivation
Named for Kidd, Monroe County.
Other names
History/background
As originally defined, it included the Harrodsburg Member of the Ullin Limestone, but it was restricted by Lineback to the biocalcarenite below the Fults Member and above the Ullin.
Type section
Type location
The type section of the Kidd Member is in the Mississippi River bluffs east of the village of Kidd, Monroe County (NE NE 1, 5S-10W).
Type author(s)
Type status
Reference section
Reference location
Reference author(s)
Reference status
Stratigraphic relationships
The Kidd Member is the basal member of the Salem Limestone.
Extent and thickness
In the type section the Kidd consists of about 22 feet of chert-free, high-calcium biocalcarenite, largely made up of medium and coarse grains of fragmented fossils, mostly crinoid columnals and bryozoan detritus, in beds 2-3 feet thick.
Lithology
Core(s)
Photograph(s)
Contacts
Well log characteristics
Fossils
The foraminifers Endothyra sp., Tournayella sp., and Globoendothyra sp. are present. Globoendothyra baileyi is common and becomes more common in the upper half of the member.
Age and correlation
Environments of deposition
Economic importance
Remarks
References
BAXTER, J. W., 1960a, Salem Limestone in southwestern Illinois: Illinois State Geological Survey Circular 284, 32p.
LINEBACK, J. A., 1972, Lateral gradation of the Salem and St. Louis Limestones (Middle Mississippian) in Illinois: Illinois State Geological Survey Circular 474, 23 p.
ISGS Codes
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