Usage:
Mountain Pass Rhyolite (CA)
Geologic age:
Jurassic(?)
Type section, locality, area and/or origin of name:
Type area: occupies about 3 sq km in parts of secs. 24 and 25, T. 16 N., R. 13 E., and sec. 30, T. 16 N., R. 14 E., San Bernardino Co., CA. Named from village of Mountain Pass (Evans, 1971).
AAPG geologic province:
Mojave 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 ([ ]).