Usage:
Jardine Basalt (MT)
Geologic age:
Precambrian
Type section, locality, area and/or origin of name:
Notable exposures: caps mountain on east side of Bear Gulch ("Bear Creek" of Yellowstone folio), just east of town of Jardine, southwestern MT. Lies at altitude of about 8,400 feet (Howard, 1937).
AAPG geologic province:
Montana folded belt
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 ([ ]).