No current usage.
(Rocks of †/Elm Creek Limestone (OK) reallocated to McCurtain Shale Member of McAlester Formation of Krebs Group. See McCurtain.)
[Preoccupied. Name previously applied to Elm Creek Limestone by Drake (1893) in TX.]
Middle Pennsylvanian (Desmoinesian)
Named from occurrences along Elm Creek, south of road, in NW/4 SE/4 sec. 10, T. 29 N., R. 22 E., Ottawa Co., OK (Weidman, 1932).
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 ([ ]).