A pleistocene ice sheet in the northern Boulder Mountains, Jefferson, Powell, and Lewis and Clark Counties, Montana /

Bibliographic Details
Main Author:	Ruppel, Edward Thompson, 1925- (Author)
Format:	Government Document
Language:	English
Published:	Washington, D.C. : United States Department of the Interior, Geological Survey, 1962.
Series:	Geological Survey bulletin ; 1141-G. Contributions to general geology.
Subjects:	From 2 to 140 million years ago Geology > Montana. Geology, Stratigraphic > Cretaceous. Geology, Stratigraphic > Tertiary. Cretaceous Geologic Period. Geology. Geology, Stratigraphic. Tertiary Geologic Period. Montana.
Online Access:	https://purl.fdlp.gov/GPO/gpo73754

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