Usage:
Carter Creek Formation of Colorado Group (MT-recognized locally in Drummond-Jens area)
(Called Carten Creek Formation in USGS reports.)
Geologic age:
Late Cretaceous
Type section, locality, area and/or origin of name:
Type area: between Brock and Carter [Carten] Creeks. Named from Carter [Carten] Creek, a south-flowing tributary of Clark Fork River, 13 mi southeast of Drummond, Granite Co., MT. Type locality not designated due to lack of suitable exposures in map area; all exposures are incomplete. Partial section (lower 778 ft) measured in NE/4 sec. 20, T. 10 N., R. 11 W., east of Jens, [Granite Co.], MT (Gwinn, 1961, 1965).
[U.S. Board on Geographic Names changed name from Carter Creek to Carten Creek in 1960; uncertain when this change appeared on topographic maps.]
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 ([ ]).