Measured stratigraphic sections of Lower Cretaceous Blackleaf Formation and Lower Upper Cretaceous Frontier Formation (lower part) in Beaverhead and Madison counties, Montana

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by
U.S. Dept. of the Interior, Geological Survey , [Reston, Va.?]
Geology, Stratigraphic -- Cretaceous., Geology -- Mon
Statementby T.S. Dyman.
SeriesOpen-file report -- 85-431., Open-file report (Geological Survey (U.S.)) -- 85-431.
ContributionsGeological Survey (U.S.)
The Physical Object
FormatMicroform
Pagination1 v.
ID Numbers
Open LibraryOL17668769M