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National Geologic Map Database

Geologic Unit: Rancho Rojo

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 ([ ]).