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National Geologic Map Database

Geologic Unit: White Ridge

Usage:

White Ridge Limestone Member of Jefferson Formation (MT)


Geologic age:

Late Devonian


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

Named from White Ridge. Forms lower part of slope above saddle on south side of peak forming west end of White Ridge, in S/2 sec. 16, T. 22 N., R. 11 W., [Slategoat Mountain 7.5-min quadrangle, 1995 ed., 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 ([ ]).