Usage:
McShan Formation (AL*,MS*)
McShan Formation of Eutaw Group (MS)
Geologic age:
Late Cretaceous*
Type section, locality, area and/or origin of name:
A continuous series of roadcuts near middle of formation on Tuscaloosa-Columbus highway (U.S. Highway 82), 1.5 mi north of McShan, in secs. 17 and 18, T. 19 S., R. 15 W., Pickens Co., AL (Monroe and others, 1946).
AAPG geologic province:
Black Warrior basin*
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 ([ ]).