Usage:
Plummer Shale Member of Pawhuska Formation (OK*)
Plummer Limestone of Ada Group (OK)
Geologic age:
Late Pennsylvanian (Virgilian)*
Type section, locality, area and/or origin of name:
Not designated. Named from exposures near the house on the Plummer Ranch, in T. 26 N., R. 9 E., Osage Co., OK (Winchester, 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 ([ ]).