Usage:
Alsobrook Formation (AL,MS)
Alsobrook Member of Pride Mountain Formation (AL*,MS*)
Subunits:
Cripple Deer Sandstone Member (AL,MS).
Geologic age:
Middle Mississippian (Visean; early Chesterian)*
Type section, locality, area and/or origin of name:
Type section: exposures at the Alsobrook homestead and the Alsobrook bridge located about 3 mi north of Allsboro, in sec. 10, T. 4 S., R. 15 W., northwest AL (Morse, 1928).
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 ([ ]).