Usage:
Birch Creek Limestone Member of Barnsdall Formation of Ochelata Group (OK*)
Geologic age:
Late Pennsylvanian (Missourian)*
Type section, locality, area and/or origin of name:
Named from exposure in bluffs on north side of Birch Creek, near eastern edge of SE/4 sec. 25, T. 24 N., R. 10 E., Osage Co., central northern OK (Bowen, 1918, [1922]).
AAPG geologic province:
Chautauqua platform*
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 ([ ]).