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National Geologic Map Database

Geologic Unit: Coconino

Usage:

Coconino Sandstone (AZ*,CA*,NV*,UT*)
Coconino Quartzite (CA*)


Subunits:

(alphabetical) --all in AZ: Cave Spring Member, Harding Point Member.


Geologic age:

Early Permian*


Type section, locality, area and/or origin of name:

Type section: Aubrey Cliffs, Coconino Co., northern AZ (McNair, 1951).
Reference section: beginning on east side of upper Whitmore Canyon, in SW/4 sec. 12, T. 33 N., R. 9 W., [southeast of Woods Ranch, in Mount Logan 7.5-min quadrangle], and ending at top of Hurricane Cliffs [near Mount Trumball], Mohave Co., northern AZ (Sorauf and Billingsley, 1991).
Underlies entire Coconino Plateau as well as extensive plateau country north of Grand Canyon (Darton, 1910).


AAPG geologic province:

Basin-and-Range province*
Black Mesa basin*
Great Basin province*
Plateau sedimentary province*
Salton 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).