Usage:
Plateau Rhyolite (ID*,MT*,WY*)
Subunits:
(alphabetical): Central Plateau Member (ID*,MT*,WY*), Mallard Lake Member (WY*), Obsidian Creek Member (WY*), Roaring Mountain Member (MT*,WY*), Upper Basin Member (WY*).
Geologic age:
Pleistocene*
Type section, locality, area and/or origin of name:
Each of its six members has its own type area in Yellowstone National Park, northwestern WY (Christiansen and Blank, 1972).
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 ([ ]).