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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).