Usage:
Lenapah Limestone of Marmaton Group (IA?,KS*,MO*,OK*)
Lenapah Formation of Marmaton Group (MO)
Subunits:
(alphabetical): Idenbro Member (KS,MO,OK), Norfleet Limestone Member (IA,MO) or Norfleet Member (KS,OK), Perry Farm Shale Member (KS,MO,OK), Sni Mills Limestone Member (MO) or Sni Mills Member (KS).
Geologic age:
Middle Pennsylvanian (Desmoinesian)*
Type section, locality, area and/or origin of name:
Not designated. Named from the town of Lenapah, Nowata Co., OK (Ohern, 1910).
Type exposure: in the old quarry, in NW/4 NE/4 sec. 30, T. 28 N., R. 16 E., Nowata Co., OK (Jewett, 1941).
AAPG geologic province:
Chautauqua platform*
Cherokee basin*
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 ([ ]).