Prater Creek Ash-Flow Tuff (OR*)
Tertiary
Miocene, late*
Type section: exposures on walls of Poison Creek, adjacent to Highway 395, 11 to 12 km north of Burns, Lat. 43 deg. 41 min. N., Long. 119 deg. W. Harney Co., OR (Walker, 1979).
Great Basin 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 ([ ]).