Usage:
Calico Formation (CA)
Geologic age:
late Tertiary (Miocene)
Type section, locality, area and/or origin of name:
Typical section exposed on steep hillside a few hundred feet east of Williams Brothers pumice quarry, 18 mi northeast of Barstow, San Bernardino Co., southern CA (Chesterman, 1956; name credited to T.W. Dibblee, Jr., unpub. map).
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 ([ ]).