Usage:
Park City Formation (CO*,ID*,MT*UT*,WY*)
Park City Group (NV*,UT*)
Subunits:
GROUP STATUS (alphabetical): Gerster Formation (NV*,UT*) or Gerster Limestone (NV*,UT*), Grandeur Formation (UT*), Indian Canyon Formation (NV,UT), Kaibab Limestone (NV*,UT*), Murdock Mountain Formation (NV*,UT*), Plympton Formation (NV*,UT*).
FORMATION STATUS (alphabetical): Ervay Member (WY*), Franson Member (CO*,ID*,MT*,UT*,WY*) or Franson Tongue (CO*,ID*,MT*,UT*WY*), Grandeur Member (ID*,MT*,UT*,WY*) or Grandeur Tongue (ID*,MT*,UT*,WY*).
Geologic age:
Permian, Early*
Leonardian, early late*
Guadalupian, early*
Wordian*
Type section, locality, area and/or origin of name:
Type section: Big Cottonwood Canyon, in S/2 SW/4 sec. 9 and N/2 NW/4 sec. 16, T. 2 S., R. 3 E., Salt Lake Co., UT, Salt Lake Co., UT. Named from the Park City district, Summit Co., UT (Boutwell, 1907; McKelvey and others, 1959).
AAPG geologic province:
Wasatch uplift*
Uinta uplift*
Green River basin*
Great Basin province*
Yellowstone province*
Snake River basin*
Montana folded belt*
Wind River basin*
Bighorn 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 ([ ]).