Usage:
Butterfield Peaks Formation of Oquirrh Group (UT*)
Geologic age:
Middle Pennsylvanian (Desmoinesian)*
Type section, locality, area and/or origin of name:
Type section: in secs. 6, 7, 18 through 21, T. 4 S., R. 3 W., and in sec. 12, T. 4 S., R. 4 W., Fairfield, Stockton, and Bingham Canyon quadrangles, Tooele Co., UT. Named from Butterfield Peaks (Tooker and Roberts, 1970).
Reference section (lower part): in secs. 26, 27, and 34, T. 4 S., R. 4 W., Stockton quadrangle, Tooele Co., UT (Tooker and Roberts, 1970).
AAPG geologic province:
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 ([ ]).