Usage:
Phillips Formation of Missoula Group of Belt Supergroup (MT)
(Belt Supergroup of U.S. = Purcell Supergroup of Canada)
Geologic age:
Mesoproterozoic
Type section, locality, area and/or origin of name: (See Canadian Lexicon)
Named from occurrence on two summits about 2 mi north of Phillips Creek, southern British Columbia, Canada (Daly, 1913).
AAPG geologic province:
Northern Rocky Mountain region
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 ([ ]).