- Usage in publication:
-
- "Buck Island Member"
- Modifications:
-
- First used
- Dominant lithology:
-
- Mudstone
- Sandstone
- AAPG geologic province:
-
- Sacramento basin
Summary:
Named upper member of Davis Canyon Formation by Lawton (1956, PhD thesis). Recognized in Morgan-Wilbur area in Lake, Yolo, and Colusa Countiess, northern California. Consists of mudstone and feldspathic sandstone. Composite columnar section of northern Great Valley sequence shows unit overlies "Baldy Mountain Member" of "Davis Canyon Formation" and underlies "Brophy Canyon Formation" of Lawton (1956). Age is Early Cretaceous (Aptian and Albian).
[Misprint in Lawton's dissertation abstract (1956, Dissert. Abs., v. 16, no. 10, p. 1885). Used term Davis Creek with Baldy Mountain and Buck Island Members intsead of Davis Canyon (name used in thesis manuscript). Davis Creek was listed in the Keroher Lexicon (U.S. Geol. Survey Bull. 1200).]
Source: Modified from 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 ([ ]).