Usage:
Wapiti Formation of Sunlight Group of Absaroka Volcanic Supergroup (MT*,WY*)
Subunits:
Jim Mountain Member (WY*).
Geologic age:
early Tertiary (Eocene)*
Type section, locality, area and/or origin of name:
Type section: north of of Wapiti Post Office, Park Co., WY. Named from exposures between 6,800 and 10,300 ft elevation in mountains north and south of Wapiti Post Office, Park Co., WY (Nelson and Pierce, 1968).
AAPG geologic province:
Bighorn basin*
Yellowstone province*
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 ([ ]).