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National Geologic Map Database

Geologic Unit: Grays Canyon

Usage:

No current usage.
(†Grays Canyon Limestone Member of Nevada Formation (NV) is synonym of McColley Canyon Formation. See McColley Canyon.)


Geologic age:

Devonian, Early*
Devonian, Middle*


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

Exposed only in Grays Canyon, Lat. 39 deg. 21 min. 26 sec. N., Long. 115 deg. 59 min. 50 sec. W., Pinto Summit 15-min quadrangle, Eureka Co., NV. Named from Grays Canyon (Nolan and others, 1974).
Type section (unpublished) considered to be in unnamed canyon west of Grays Canyon, west and southwest of South Hill, Bellevue Peak quadrangle, Eureka Co., NV.


AAPG geologic province:

Great Basin province


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 ([ ]).