Usage:
China Hat Gravel Member of Laguna Formation (CA*-recognized locally in Merced-Madera area, Merced Co.)
[?] China Hat Gravel (CA)
Geologic age:
late Tertiary (late Pliocene)*
Type section, locality, area and/or origin of name:
Type section: China Hat, a conical hill in sec. 32, T. 5 S., R. 15 E., Haystack 7.5-min quadrangle, Merced Co., CA (Marchand and Allwardt, 1981).
AAPG geologic province:
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 ([ ]).