Usage:
Swan Peak Quartzite (ID*,UT*)
Swan Peak Formation (ID*,UT*)
Subunits:
Watson Ranch Tongue (UT).
Geologic age:
Middle Ordovician*
Type section, locality, area and/or origin of name:
Not designated. Named from Swan Peak, Bear River Range, 1.5 mi south of ID State line, Rich Co., UT (Richardson, 1913).
AAPG geologic province:
Wasatch uplift*
Great Basin 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 ([ ]).