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National Geologic Map Database

Geologic Unit: Nugget

Usage:

Nugget Sandstone (CO*,ID*,UT*,WY*)


Subunits:

Bell Springs Member (CO*,WY*).


Geologic age:

Triassic(?) and Early Jurassic*


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

Named from Nugget Station, on Oregon Short Line, [a few mi west of Fossil, in SW/4 sec. 4, T. 21 N., R. 118 W., Nugget 7.5-min quadrangle, Lincoln Co.], southwestern Wyoming, at and near which the beds are well exposed (Veatch, 1907).


AAPG geologic province:

Central Western Overthrust*
Denver basin*
Green River basin*
Snake River basin*
Wind River basin*
Yellowstone 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 ([ ]).