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National Geologic Map Database

Geologic Unit: Monitor Mountain

Usage:

No current usage.
(†Monitor Mountain Limestone Member of Madison Limestone (MT-local) considered abandoned.)


Geologic age:

Middle Mississippian (Visean; Meramecian)


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

Only known occurrence [type locality]: on upper ridge and top of Monitor Mountain, in NE/4 sec. 18, T. 17 N., R. 7 W., [Caribou Peak 7.5-min quadrangle, Lewis and Clark Co., northwestern MT] (Deiss, 1933).


AAPG geologic province:

Montana folded belt


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).