Usage:
Montgomery Creek Formation (CA*)
Geologic age:
Tertiary
Eocene*
Type section, locality, area and/or origin of name:
North side of Montgomery Creek, 2.5 mi east-northeast of village of same name [Montgomery 15-min quadrangle, Shasta Co., CA] (Anderson and Russell, 1939).
AAPG geologic province:
Sacramento 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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).