Usage:
Okay Limestone Lentil of Pawhuska Formation (OK*)
Geologic age:
Pennsylvanian*
Type section, locality, area and/or origin of name:
Not designated. Named from its good exposures by the O.K. Ranch, in sec. 31, T. 25 N., R. 9 E., Osage Co., OK (Heald, 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 ([ ]).