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National Geologic Map Database

Geologic Unit: Bragdon

Usage:

Bragdon Formation (CA*)


Geologic age:

Mississippian*
Devonian, Late [?]


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

Exposures in Bragdon Gulch and vicinity of Bragdon, on Trinity River 8 mi south of Trinity Center, Weaverville quadrangle, northwestern CA. Named from community of Bragdon. Formation occurs as an arcuate band 17 mi long and as much as 4 mi wide at north end of West Shasta district, Shasta Co., CA (Hershey, 1901).


AAPG geologic province:

Klamath Mountains 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 ([ ]).