No current usage.
(†Ramona Formation of Sapulpa Group (OK) abandoned.)
Pennsylvanian
Not designated; name applied between Arkansas River and line approx. coincident with Claremore and Nowata quadrangles. Named from the town of Ramona, Washington Co., OK (Ohern, 1910).
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 ([ ]).