Morse, W.C., 1928, Paleozoic rocks of Mississippi: Journal of Geology, v. 36, no. 1, p. 31-43.
Named for Carmack Creek, a small tributary to Tennessee River, north of Whetstone Branch, Tishomingo Co., northeastern MS. Occurs in northeastern MS and northwestern AL. Consists of brownish or bluish-gray limestone that breaks into thin shaly layers on exposure. To the east in AL, becomes more cherty and grades into chert of Lauderdale formation. Underlies Iuka formation. Thickness is 100 ft. Age is Mississippian (early). Contains Kinderhook fossils.
Source: GNU records (USGS DDS-6; Reston GNULEX).
Term Carmack Creek limestone used interchangeably with Carmack limestone in this report. Strata previously included in Yellow Creek beds of Lowe.
Source: GNU records (USGS DDS-6; Reston GNULEX).
Generalized section of Paleozoic rocks shows Carmack limestone underlying Iuka formation and overlying Devonian Whetstone Branch formation.
Source: GNU records (USGS DDS-6; Reston GNULEX).
In this report, local names of Morse (1928; 1930), Iuka Formation and Carmack Limestone, are dropped in favor of the more widely accepted nomenclature of Butts (1926), Welch (1958, 1959), and Thomas (1972, 1979)--Fort Payne and Tuscumbia Formations.
Source: GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).