Usage:
Gribbles Park Tuff (CO*)
Geologic age:
Tertiary*
Oligocene, late*
Type section, locality, area and/or origin of name:
Where it caps mesas along north side of Gribbles Park, in W/2 sec. 16 and E/2 sec. 17, T. 51 N., R. 11 E., and on Two Creek in E/2 sec. 5, T. 50 N., R. 11 E., Cameron Mountain quadrangle, Fremont Co., CO. Named from Gribbles Park (Epis and Chapin, 1974).
AAPG geologic province:
Denver 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 ([ ]).