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Map showing publication footprint
  • Usage in publication:
    • Barnes Creek gravel
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Gravel
    • Siltstone
    • Sandstone
    • Limestone
  • AAPG geologic province:
    • Montana folded belt
Publication:

Gwinn, V.E., 1961, Geologic map of the Drummond area, Granite and Powell Counties, Montana: Montana Bureau of Mines and Geology Geologic Map, no. 4, scale 1:63,360, Also issued as Montana Bur. Mines Geol. Spec. Pub., no. 21


Summary:

Barnes Creek gravel. Gravel with pink sandy matrix. Overlies upper part of Flint Creek beds. Thickness 0 to about 250 feet. Contains Pliocene vertebrate fragments in upper part. Age is considered Pliocene.
Named from occurrence near mouth of Barnes Creek, Granite Co., central western MT.

Source: US geologic names lexicon (USGS Bull. 1350, p. 46).


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 ([ ]).

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