U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Tyee

Usage:

Tyee Formation (OR*)
Tyee Sandstone (OR*)


Subunits:

(alphabetical) --all in OR: Baughman Member, Elkton Siltstone Member*, Hubbard Creek Member, Lorane Shale Member, Tyee Mountain Member.


Geologic age:

Eocene*


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

Douglas Co., western OR. Forms prominent escarpment from Tyee Mountain to Camas Valley (Diller, 1898).


AAPG geologic province:

Western Columbia 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 ([ ]).