Usage:
Christensen Ranch Metasedimentary Suite (MT*)
Geologic age:
Precambrian*
Archean, Middle*
Archean, Late*
Type section, locality, area and/or origin of name:
Type area: northwest-facing slope of Ruby Range, between Stone Creek and Hoffman Gulch, in T. 7 and 8 S., R. 7 W., Madison and Beaverhead Cos., MT. Named from Christensen Ranch, in T. 7 W., R. 7 W. (James, 1990).
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 ([ ]).