Usage:
Bishop Tuff (CA*)
Bishop ash (informal) (CA*,CO*,ID*,NE*,NV*,NM*,UT*,WY*)
Bishop ash bed (informal) (CA*,CO*,ID*,NE*,NV*,NM*,UT*,WY*)
For informal usage, the rank or lithologic term should not be capitalized.
Geologic age:
Quaternary (Pleistocene; Irvingtonian NALMA)*
Type section, locality, area and/or origin of name:
Named from town of Bishop. Exposed in area southeast of Mono Lake CA (Gilbert, 1938).
Type locality (Gilbert's section): in Owens River Gorge, in sec. 22, T. 5 S., R. 31 E., north boundary of Mount Tom 15-min quadrangle, Mono Co., CA (Bateman, 1965).
AAPG geologic province:
Great Basin province*
Orogrande basin*
San Luis basin*
Eagle basin*
Green River basin*
Salina basin*
Snake River basin*
Wasatch uplift*
Paradox basin*
Salton basin*
Capistrano basin*
San Joaquin basin*
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 ([ ]).