Usage:
No current usage.
(Rocks of †Billiard Ball limestone member (informal) of †Butterfield Formation (UT-recognized locally in Bingham district) reallocated to Butterfield Peaks Formation of Oquirrh Group. See Butterfield Peaks.)
Geologic age:
Middle Pennsylvanian (Desmoinesian)
Type section, locality, area and/or origin of name:
Type locality not stated. Occurs in Bingham district, Oquirrh Mountains, Salt Lake Co., northern UT. Origin of name not stated by authors (Welsh and James, 1961).
[Type section (of Butterfield Formation): in secs. 10 and 15, T. 4 S., R. 3 W., Bingham district, Salt Lake Co., UT. Traverse begins at Butterfield Peak 9,360, and proceeds up section north along ridge into sec. 10, just above Tie Fork (Welsh and James, 1961).]
AAPG geologic province:
Wasatch uplift
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 ([ ]).