Usage:
Rough Rock Sandstone of Mesaverde Group (AZ*)
Geologic age:
Late Cretaceous (Santonian)*
Type section, locality, area and/or origin of name:
Type section: 3.5 mi southwest of town of Rough Rock, Lat. 36 deg. 23 min. 22 sec. N., Long. 109 deg. 54 min. 49 sec. W., Apache Co., AZ (Francyzk, 1988).
AAPG geologic province:
Black Mesa 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 ([ ]).