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National Geologic Map Database

Geologic Unit: Paso Robles

Usage:

Paso Robles Formation (CA*)


Geologic age:

Pleistocene*
Pliocene*
Miocene*


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

Not stated. Characteristically exposed about town of Paso Robles [San Luis Obispo Co.], from where they extend west toward Santa Lucia Mountains and for many miles north and east of that place, filling valley of the Estrella and its tributaries (Fairbanks, 1898). Type region: Salinas Valley in Coast Ranges northwest of Santa Maria district, south-central CA (Woodring and Bramlette, 1950).


AAPG geologic province:

Coastal basins*


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 ([ ]).