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mods: Correlation chart of lower Cretaceous rocks, Madison Range to Lima Peaks area, southwestern Montana Geological Survey (U.S.) creator Tysdal, Russell G. Dyman, T. S. Nichols, Douglas J. cartographic map Charts, diagrams, etc. vau Reston, Va Denver, CO The Survey For sale by Map Distribution 1989 monographic eng section 1 section ; sheet 107 x 107 cm, folded in envelope 30 x 24 cm + 1 pamphlet (16 pages ; 28 cm). Department of the Interior, U.S. Geological Survey ; by R.G. Tysdal, T.S. Dyman, and D.J. Nichols. Pamphlet includes bibliography, pages 9-13. n-us-mt Scale not given. Geology, Stratigraphic Cretaceous Charts, diagrams, etc Stratigraphic correlation Montana Charts, diagrams, etc Formations (Geology) Montana Charts, diagrams, etc Cretaceous Geologic Period Formations (Geology) Geology, Stratigraphic Stratigraphic correlation Montana From 65 to 140 million years ago fast G3700 svar .G453 MF-2067 QE75 .M4 MF-2067 I 19.113:MF-2067 I 19.113:MF-2067 Miscellaneous field studies ; map MF-2067 GIS 890501 20211214102707.0 in00000873568 eng