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National Geologic Map Database

Geologic Unit: Timpoweap

Usage:

Timpoweap Member of Moenkopi Formation (AZ*,NV,UT*)


Geologic age:

Early Triassic*


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

Type locality: near Virgin City, Washington Co., central southern UT. Traced eastward from type locality to Paria River. [River map shows Virgin, Washington Co., and Timpoweap Canyon of Virgin River, Washington Co.] (Gregory, 1948, 1950).
Reference sections proposed in Washington Co., central southern UT (Nielson and Johnson, 1979): (1) at Isom Wash-Virgin River intersection, in NE/4 SW/4 SE/4 sec. 19, T. 41 S., R. 12 W.; (2) at Isom Wash-UT Highway 15 intersection, in SW/4 SW/4 NE/4 sec. 30, T. 41 S., R. 12 W.; (3) at first wash east of Isom Creek, in SW/4 NE/4 NE/4 sec. 30, T. 41 S., R. 12 W.; (4) in NE/4 NW/4 NE/4 sec. 29, T. 41 S., R. 12 W.


AAPG geologic province:

Great Basin province*
Plateau sedimentary province*


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 ([ ]).