Usage:
Kasiska Quartzite Member of Brigham Quartzite (ID*)
Geologic age:
Precambrian*
Type section, locality, area and/or origin of name:
Type area: from NW/4 NW/4 sec. 12, T. 10 S., R. 38 E., to NE/4 NW/4 sec. 4, T. 11 S., R. 39 E., Bancroft quadrangle, Bannock Co., ID (Oriel and others, 1971).
Type section: incomplete exposures in western part of sec. 12, T. 10 S., R. 38 E., Sedgwick Peak 7.5-min quadrangle, Bannock Co., ID (Oriel and others, 1971).
AAPG geologic province:
Northern Rocky Mountain region*
Idaho Mountains 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 ([ ]).