Usage:
Black Mountain Basalt (CA*)
[?] Black Mountain Basalt in Cudahy Camp Formation of Ricardo Group (CA)
(†Cudahy Camp Formation and †Ricardo Group not used by the USGS.)
Geologic age:
Tertiary (Miocene)*
Type section, locality, area and/or origin of name:
Named from flows on Black Mountain, 7 mi. west of El Paso Peaks in El Paso Mountains, along northern boundary of Mojave Desert, [approx. Lat. 35 deg. 28 min. 18 sec. N., Long. 117 deg. 50 min. 52 sec. W.], Satldale 15-min quadrangle, Kern Co., southern CA (Baker, 1912; Hulin, 1925).
AAPG geologic province:
Mojave basin*
San Joaquin 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 ([ ]).