Usage:
Pine Ridge Sandstone of Mesaverde Group (CO*,WY*)
Geologic age:
Late Cretaceous (Campanian)*
Type section, locality, area and/or origin of name:
Not designated. Named from exposures on Pine Ridge, 2 mi southeast of Rock River (Dobbin and others, 1929).
Principal section designated in NE/4 SW/4 NW/4 sec. 16, T. 20 N., R. 76 W., Albany Co., WY (Gill and others, 1970).
AAPG geologic province:
Green River 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 ([ ]).