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National Geologic Map Database

Geologic Unit: Freeman

Usage:

Freeman Silt (CA*)
Also called /Freeman-Jewett Shale in some reports.


Geologic age:

Tertiary
Miocene, early*


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

Type section (subsurface): 328 ft cored interval, depth-interval 890 to 1,218 ft, Shell Oil Jewett no. 1 well, southern Round Mountain oil field, in sec. 29, T. 28 S., R. 29 E., Kern Co., CA (Addicott, 1970).


AAPG geologic province:

San Joaquin basin*


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 ([ ]).