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National Geologic Map Database

Geologic Unit: Darby

Usage:

Darby Formation (ID*,WY*)


Geologic age:

Devonian, Late*
Mississippian, Early*


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

Named from canyon of Darby Creek, on west slope of Teton Range, where well exposed, Teton Co., northwestern WY (Blackwelder, 1918).
Type section: 3.5 mi north of Darby Canyon on south side of Teton Canyon above cirque immediately south of Boy Scout Camp, Teton Co., WY (Reeves, 1964).


AAPG geologic province:

Bighorn basin*
Green River basin*
Powder 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 ([ ]).