Quartermaster Formation (KS*,NM*,OK*,TX*)
FORMATION STATUS (alphabetical): Alibates Dolomite Lentil (NM*,TX*), Bessie Member (OK), Doxey Member (OK*), Elk City Member (OK*) or Elk City Sandstone Member (OK), Saddlehorse Gypsum Lentil (TX*).
Middle to Late Permian (Guadalupian to Lopingian; Capitanian to Ochoan)*
Named from exposure along banks of Quartermaster Creek, Roger Mills Co., OK (US geologic names lexicons, USGS Bull. 896, 1200).
Palo Duro basin*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.
"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).