U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Butano

Usage:

Butano Sandstone (CA*)


Geologic age:

Tertiary
Eocene*


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

Type section: along Little Boulder Creek [in SW/4 sec. 22, SE/4 sec. 21 and N/2 sec. 28 T. 8 S., R. 3 W.] Big Basin 7.5-min quadrangle, San Mateo and Santa Cruz Cos., CA (Cummings and others, 1962).


AAPG geologic province:

California Coast Ranges 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).