Usage:
Crater Tuff Breccia Member of Colter Formation (WY)
Geologic age:
Tertiary
Miocene
Type section, locality, area and/or origin of name:
Type section (= lower part of Colter Formation type section): along East Pilgrim Creek, Two Ocean Lake 7.5-min quadrangle, Teton Co., WY. Named from Crater Mountain (Barnosky, 1984).
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 ([ ]).