Usage:
Colter Formation (WY*)
Subunits:
(alphabetical) --all in WY: Crater Tuff Breccia Member, Pilgrim Conglomerate Member.
Geologic age:
Tertiary*
Miocene, early*
Miocene, middle*
Type section, locality, area and/or origin of name:
Type section: on Pilgrim Creek about 5 mi northeast of Colter Bay, on Jackson Lake. Section extends eastward from east face of Pilgrim Peak across Pilgrim Creek for distance of about 1 mi, and lies in secs. 20, 21, 22, 27, 28, and 29, T. 46 N., R. 114 W., Teton Co., WY. Named from Colter Bay (Love, 1956).
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 ([ ]).