- Usage in publication:
-
- Bieber formation
- Modifications:
-
- Named
- Dominant lithology:
-
- Gravel
- Sand
- Clay
- Silt
- AAPG geologic province:
-
- Great Basin province
Summary:
[Probably named for Bieber, Lassen Co, CA]. Underlies all of Big Valley and Round Valley in northeast CA. Consists of lake deposits of interbedded gravel, white sand, black sand, clay, silt, and diatomite. Is at least 1000 feet thick. Probably underlain by similar materials belonging to Turner Creek formation (new). Underlies in may places thin veneer of younger deposits and some adjacent basalt flows. Is Pliocene and Pleistocene age.
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 ([ ]).