Arido Sandstone (AZ,CO,NM)
(†Arido Sandstone not used by the USGS. Appears to correspond to Wingate Sandstone.)
Jurassic
Named from Arido Creek in northern part of Navajo Reservation, northeastern AZ (Keyes, 1936).
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 ([ ]).