- Usage in publication:
-
- Zayante Sandstone*
- Modifications:
-
- Named
- Dominant lithology:
-
- Sandstone
- Siltstone
- Conglomerate
- AAPG geologic province:
-
- California Coast Ranges province
Summary:
Named by Clark (1966 PhD thesis) for Zayante Creek about 2 mi northeast of Zayante. Type section designated along Zayante Creek from axis of anticline (NW/4 sec.31 T9S R1W) northward to contact with Vaqueros Sandstone (SW/4 sec.30 T9S R1W) [Felton 7.5' quad] Santa Cruz Co, CA. Rocks formerly included in Vaqueros Sandstone as mapped by Branner and others (1909) and Jennings and Burnett (1961). Extends from 2 mi east of Boulder Creek eastward for about 6 mi. Composed predominantly of thick to very thick bedded, yellowish-orange arkosic sandstone with thin interbeds of green and red siltstone, and lenses and thick interbeds of pebble and cobble conglomerate. Is about 1600 ft at type and about 1800 ft thick near Lompico Creek. Conformably overlies San Lorenzo Formation; in depositional contact or locally faulted against Vaqueros Sandstone. Age is Oligocene (Zemorrian).
Source: GNU records (USGS DDS-6; Menlo GNULEX).
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 ([ ]).