Usage:
Iron Granodiorite Gneiss of Iron Mountains Intrusive Suite (CA*)
Geologic age:
Late Cretaceous*
Type section, locality, area and/or origin of name:
Area 2 km west of the Iron Mountain pumping plant, in sec. 24 and 25, T. 1 N., R. 17 E., Iron Mountains 7.5-min quadrangle, San Bernardino Co., CA (Howard, 2002).
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 ([ ]).