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National Geologic Map Database

Geologic Unit: Sun Valley

Usage:

Sun Valley Group (ID*)


Subunits:

(alphabetical) --all in ID*: Dollarhide Formation, Grand Prize Formation, Wood River Formation.


Geologic age:

Pennsylvanian, Middle*
Desmoinesian*
Pennsylvanian, Late*
Missourian*
Virgilian*
Permian, Early*
Wolfcampian*
Leonardian*


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

Type area: in area where the 3 constituent formations are exposed; between Bellevue, Blaine Co., ID, north to White Cloud Peaks, Custer Co., ID (Mahoney and others, 1991).


AAPG geologic province:

Idaho Mountains province*
Snake River basin*


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 ([ ]).