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National Geologic Map Database

Geologic Unit: Gros Ventre

Usage:

Gros Ventre Formation (ID*,MT*,WY*)


Subunits:

FORMATION STATUS (alphabetical): Death Canyon Member (ID*,WY*), Maurice Member (MT,WY), Park Shale Member (ID,WY*), Wolsey Shale Member (MT,WY*).


Geologic age:

Middle to Late Cambrian*


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

Blackwelder (1918) gives typical detailed section on west slope of Doubletop Peak, Gros Ventre Range, [Teton and Sublette Cos.], northwestern WY (US geologic names lexicon, USGS Bull. 896).


AAPG geologic province:

Bighorn 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 ([ ]).