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National Geologic Map Database

Geologic Unit: Hole-in-the-Wall

Usage:

No current usage.
(†Hole-in-the-Wall Member of †Boulder Pass Formation (MT) replaced with Spokane Formation of the †Piegan Group [†Piegan later abandoned]. See Spokane.)


Geologic age:

Mesoproterozoic*


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

Not designated. Origin of name not stated by authors, but probably named from Hole-in-the-Wall Falls in Glacier National Park, Flathead Co., northwestern MT (Fenton and Fenton, 1931).


AAPG geologic province:

Northern Rocky Mountain region


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 ([ ]).