Elbert Formation (AZ*,CO*,NM*,UT*)
McCracken Sandstone Member (AZ*,CO*,NM*,UT*).
Late Devonian*
Named from exposures on Elbert Creek, a western tributary of Animas River, entering just above Rockwood, [La Plata Co.], southwestern CO (Cross, 1904).
Black Mesa basin*
Paradox basin*
Plateau sedimentary province*
San Juan basin*
San Juan Mountains 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 ([ ]).