Usage:
Freel Peak Granodiorite (CA*,NV*)
Geologic age:
Late Cretaceous*
Type section, locality, area and/or origin of name:
Type locality: exposures at Armstrong Pass, in E/2 sec. 1, T. 11 N., R. 18 E., Freel Peak 15-minute quadrangle, along El Dorado and Alpine Co. line, northern CA. Named from Freel Peak, 2 mi north of Armstrong Pass, in sec. 25, T. 12 N., R. 19 E., Freel Peak 15-minute quadrangle, along El Dorado and Alpine Co. line, northern CA (Armin and John, 1983).
AAPG geologic province:
Sierra Nevada 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 ([ ]).