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National Geologic Map Database

Geologic Unit: Yellowstone

Usage:

Yellowstone Group (ID*,MT*,WY*)


Subunits:

(alphabetical): Huckleberry Ridge Tuff (ID*,MT*,WY*), Lava Creek Tuff (ID*,MT*,WY*), Mesa Falls Tuff (ID*,MT*).


Geologic age:

Tertiary*
Pliocene*
Quaternary*
Pleistocene*


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

Not designated. Origin of name not stated by author, but probably named from Yellowstone National Park (Boyd, 1961).


AAPG geologic province:

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 ([ ]).