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National Geologic Map Database

Geologic Unit: McCracken

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 ([ ]).