Usage:
Cow Ridge Member of Green River Formation (CO*,UT*)
Geologic age:
Tertiary*
Eocene, early*
Eocene, early middle*
Type section, locality, area and/or origin of name:
Type section: in sec. 31, T. 7 S., R. 98 W., south side of Cow Ridge, Long Point quadrangle, Garfield Co., CO. Origin of name not stated by author, but probably named from Cow Ridge (Johnson, 1984).
Reference sections: Yellow Creek, in secs. 9 and 10, T. 2 N., R. 93 W., and Fletcher Gulch, in secs. 3, 10, 11, and 14, T. 1 N., R. 100 W., Garfield Co., CO (Johnson, 1984).
AAPG geologic province:
Uinta basin*
Piceance 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 ([ ]).