Usage:
Sawtooth Formation of Ellis Group (MT*,ND*?)
Sawtooth Formation (ID*?)
Geologic age:
Jurassic, Middle*
Bajocian, late middle*
Bajocian, late*
Bathonian, middle*
Type section, locality, area and/or origin of name:
Type section: Rierdon Gulch, in W/2 sec. 23, T. 24 N., R. 9 W., Teton Co., MT. Named from Sawtooth Range (Cobban, 1945).
AAPG geologic province:
Montana folded belt*
Central Montana uplift*
Sweetgrass arch*
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 ([ ]).