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National Geologic Map Database

Geologic Unit: Irvington

Usage:

Irvington Gravel (CA)


Geologic age:

Pleistocene


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

Not stated. Exposed at foot of Mission Peak (referred to by Savage as "Irvington-Mission San Jose bench"), Alameda Co., northern CA. Outcrop area is bounded on north by alluvium from Mission Creek and west by Hayward fault.


AAPG geologic province:

Northern Coast Range province


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 ([ ]).