U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Black Point

Usage:

No current usage.
(†Black Point Dolomite Member of Cherry Creek series [now Cherry Creek Metamorphic Suite] (MT) considered abandoned.)


Geologic age:

Precambrian


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

[Type area]: in area about 5 mi long and 1.5 mi wide, between Johnny Gulch and Cherry Creek, Madison Co., MT. Marble forms conspicuous ridge known locally as Black Point (Perry, 1948).


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 ([ ]).