Usage:
Brigham Group (ID*,UT*)
Brigham Quartzite (ID*,UT)
Subunits:
GROUP STATUS (alphabetical): Browns Hole Formation (UT*), Caddy Canyon Quartzite (ID*,UT*), Camelback Mountain Quartzite (ID*), Geertsen Canyon Quartzite (UT*), Gibson Jack Formation (ID*), Inkom Formation (ID*,UT*), Lead Bell Formation (ID), Mutual Formation (ID*,UT*), Papoose Creek Formation (ID*,UT*), Sedgwick Peak Quartzite (ID), Windy Pass Argillite (ID).
FORMATION STATUS (alphabetical): Kasiska Member (ID*), Sedgwick Peak Member (ID*), Windy Pass Argillite Member (ID*).
Geologic age:
Neoproterozoic to Middle Cambrian*
Type section, locality, area and/or origin of name:
Type locality: west front of Wasatch Range, northeast of Brigham, Box Elder Co., northeastern UT (Walcott, 1908).
Type locality of Walcott (lower 5,000 feet is faulted out): presumed to be along U.S. Highway 89-91, 2 mi east of Brigham City, UT (Crittenden and others, 1971).
Principal reference section: on north wall of Middle Fork, Ogden River, in secs. 18 through 21, T. 7 N., R. 2 E., Weber Co., UT (Crittenden and others, 1971).
AAPG geologic province:
Great Basin province*
Great Basin region*
Northern Rocky Mountain region*
Snake River basin*
Wasatch uplift*
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 ([ ]).