No current usage.
(Rocks of †Tygee Sandstone of Gannett Group (ID,WY), or †Tygee Member of Bear River Formation (ID,WY), reallocated to upper sandstone member of Smiths Formation. See Smiths.)
late Early Cretaceous (Albian)
Named from Tygee Creek, east of which, in T. 8 S., R. 46 E., [Sage Valley and Auburn 7.5-min quadrangles, Caribou Co., southeastern ID], the formation is well exposed (Mansfield and Roundy, 1916).
Green River basin
Snake River basin
Wasatch uplift
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 ([ ]).