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National Geologic Map Database

Geologic Unit: San Pedro

Usage:

San Pedro Sand (CA*)
San Pedro Formation (CA*)


Subunits:

(alphabetical) --all in CA: /Anchor Silt Member, Epworth Gravel Member, Fox Canyon Member, Lomita Marl Member, Timms Point Silt Member*.


Geologic age:

Pliocene and Pleistocene*


Type section, locality, area and/or origin of name:

Best exhibited at Harbor Hill, at head of San Pedro Harbor, Los Angeles Co., southern CA (Dall, 1898).
Type region: localities along San Pedro waterfront, Los Angeles Co., southern CA (Woodring and others, 1946).


AAPG geologic province:

Los Angeles basin*
Ventura 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).