Usage:
Owl Rock Member of Chinle Formation (AZ*,CO*,NM*,UT*)
Geologic age:
Triassic, Late*
Type section, locality, area and/or origin of name:
Not stated. Origin of name not stated by author, but probably named from Owl Rock (Stewart, 1957).
"Type locality": near base of Owl Rock, Navajo Co., AZ (Witkind and Thaden, 1963).
"Type section": at Owl Rock, about 7.5 mi north of Kayenta (Witkind and Thaden, 1963).
AAPG geologic province:
Plateau sedimentary province*
Black Mesa basin*
San Juan basin*
Paradox 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 ([ ]).