Usage:
McCracken Sandstone Member of Elbert Formation (AZ*,CO*,NM*,UT*)
Geologic age:
Late Devonian*
Type section, locality, area and/or origin of name:
Type section (subsurface): depth-interval 8,049 to 8,161 ft, Shell Oil Bluff Unit No. 1 well, in sec. 32, T. 39 S., R. 23 E., on McCracken Mesa near town of Blanding, [Recapture Pocket 7.5-min quadrangle], San Juan Co., southeastern UT (Knight and Cooper, 1955).
AAPG geologic province:
Black Mesa basin*
Paradox basin*
San Juan 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 ([ ]).