Usage:
Owl Canyon Formation (CO*,SD*,WY*)
Geologic age:
early Permian (Leonardian)*
Type section, locality, area and/or origin of name:
Named from exposures in lower Owl Canyon, in NW/4 sec. 6, T. 9 N., R. 69 W., and NE/4 sec. 1, T. 9 N., R. 70 W. (type locality), Larimer Co., CO (Condra and others, 1940).
AAPG geologic province:
Denver basin*
Powder River basin
Williston basin
Chadron arch*
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 ([ ]).