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National Geologic Map Database

Geologic Unit: Lone Butte

Usage:

Lone Butte Member of Jefferson Limestone (MT)


Geologic age:

Late Devonian


Type section, locality, area and/or origin of name:

Type locality: on southeast side of southern spur of Lone Butte, in NE/4 sec. 26, T. 23 N., R. 13 W. [unsurveyed, Silvertip 15-min quadrangle, Flathead Co., northwestern MT] (Deiss, 1933).


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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).