Usage:
Rancho Rojo Member of Schnebly Hill Formation (AZ)
Geologic age:
early Permian (Leonardian)
Type section, locality, area and/or origin of name:
Type section: south side of Wild Horse Mesa, in sec. 30, T. 16 N., R. 6 E., Sedona quadrangle, Yavapai Co., AZ. Named from Ranch Rojo, a subdivision south of Sedona (Blakey, 1990).
AAPG geologic province:
Basin-and-Range province
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 ([ ]).