Usage:
Hailey Member of Wood River Formation of Sun Valley Group (ID*)
Geologic age:
Middle Pennsylvanian (Desmoinesian)*
Type section, locality, area and/or origin of name:
Type section: at west end of bridge over Big Wood River at Hailey, Blaine Co., south-central ID (Hall and others, 1974).
Principal type section: along ridge at Seamans Creek, in T. 3 N., R. 19 E., Blaine Co., ID (Mahoney and others, 1991).
AAPG geologic province:
Snake River basin*
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 ([ ]).