Usage:
Mahala sandstone and conglomerate [informal, unranked] in Puente Formation (CA-local)
Considered informal and unranked. The lithologic term should not be capitalized.
Geologic age:
late Tertiary (late Miocene)
Type section, locality, area and/or origin of name:
Notable exposures in Slaughter Canyon in southeastern Puente Hills, between Chino and the Santa Ana River, San Bernardino Co., southern CA (Woodford and others, 1946).
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 ([ ]).