Sepulcher Formation of Washburn Group of Absaroka Volcanic Supergroup (MT*,WY*)
(alphabetical) --all in MT*,WY*: Daly Creek Member, Elk Creek Basalt Member, Fortress Mountain Member, Lost Creek Tuff Member.
early Tertiary (Eocene)*
Type area: Sepulcher Mountain in Yellowstone National Park, WY (Smedes and Prostka, 1972).
Montana folded belt*
Yellowstone province*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
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