Usage:
Hennessey Group (OK*)
Subunits:
(alphabetical) --all in OK: Bison Formation*, Brinkman Sandstone, Fairmont Shale*, Kingman Siltstone* or Kingman Formation*, Purcell Sandstone, Salt Plain Formation*, Tepee Creek Zeolite.
Geologic age:
early Permian (Artinskian; Leonardian)*
Type section, locality, area and/or origin of name:
Named from exposures at Hennessey, Kingfisher Co., central OK (Aurin and others, 1926).
AAPG geologic province:
Anadarko basin*
Chautauqua platform*
Sedgwick basin*
South Oklahoma folded belt
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 ([ ]).