Preliminary stratigraphic correlation of the Cretaceous Blackleaf and lower Frontier Formations in Beaverhead and Madison counties, Montana
By: by T.S. Dyman
Contributors: Geological Survey (U.S.)
Series: Open-file report -- 85-729; U.S. Geological Survey open-file report -- 85-729
Publisher: U.S. Dept. of the Interior, Geological Survey
Published: 1985
Place of publication: [Reston, Va.?]
Language: eng
Format: Microform
Subjects: Geology, Stratigraphic -- Cretaceous; Geology -- Montana -- Beaverhead County; Geology -- Montana -- Madison County
Notes: Distributed to depository libraries in microfiche

One correlation chart on folded sheet in pocket

Bibliography: leaf 8

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1985]. 2 microfiches ; 11 x 15 cm