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 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 ([ ]).