Usage:
Kilgore Tuff of Heise Group (ID*-recognized locally in Heise volcanic field)
Geologic age:
late Tertiary (Pliocene)*
Type section, locality, area and/or origin of name:
Type section: measured along north side of Kilgore-Spencer Road [about 1 mi west of town of Spencer, western edge sec. 24], T. 12 N., R. 36 E., approx. Lat. 44 deg. 21 min. 8 sec. N., Long. 112 deg. 10 min. 26 sec. W.], Spencer South 7.5-min quadrangle, Clark Co., eastern Snake River Plain (northern margin), eastern ID. [Named from town of Kilgore, about 15 mi northwest of type section; name Spencer is used for another geologic unit and unavailable] (Morgan and McIntosh, 2005, Loc. 3).
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 ([ ]).