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National Geologic Map Database

Geologic Unit: Tapeats

Usage:

Tapeats Sandstone of Tonto Group (AZ*)
Tapeats Sandstone (NV*,UT*)
Tapeats Quartzite (CA*)


Geologic age:

Cambrian, Early*
Cambrian, Middle* (local)


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

Typical section measured and described in Shinumo quadrangle, Coconino Co., Grand Canyon, northern AZ. Named from Tapeats Creek, Kaibab quadrangle, Coconino Co., Grand Canyon, northern AZ, below mouth of which, just north of Shinumo quadrangle, the bed of Colorado River lies within this sandstone (Noble, 1914).


AAPG geologic province:

Plateau sedimentary province*
Basin-and-Range province*
Salton basin*
Great Basin province*
Mojave basin*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).