Montana, North Dakota, northeastern Wyoming, and northern South Dakota

von Maughan, Edwin K.
Veröffentlicht in Paleotectonic Investigations of the Pennsylvanian System in the United States ; Pt.1: Introduction and regional analyses of the Pennsylvanian System (1975)

Big Snowy and Amsden Groups and the Mississippian-Pennsylvanian boundary in Montana : a study of the Upper Mississippian and Pennsylvanian sedimentary formations with special emp...

von Maughan, Edwin K.
Veröffentlicht 1967

Engineering geology of the city of Great Falls and vicinity, Montana

Veröffentlicht 1977

Big Snowy and Amsden Groups and the Mississippian-Pennsylvanian boundary in Montana

von Maughan, Edwin K.
Veröffentlicht 1967

The Mississippian and Pennsylvanian (Carboniferous) systems in the United States : Wyoming

von Lageson, David R.
Veröffentlicht in The Mississippian and Pennsylvanian (Carboniferous) systems in the United States ; M/DD (1979)

Studies of the Permian Phosphoria Formation and related rocks, Great Basin, Rocky Mountain region

Veröffentlicht 1979

The Murdock Mountain Formation: A New Unit of the Permian Park City Group

von Wardlaw, Bruce R.
Veröffentlicht 1979

Stratigraphy of Park City Group Equivalents (Permian) in Southern Idaho, Northeastern Nevada, and Northwestern Utah

von Wardlaw, Bruce R.
Veröffentlicht 1979

Petroleum potential of wilderness lands, Montana

Veröffentlicht 1983

Type Sections and Stratigraphy of the Members of the Blackleaf and Marias River Formations (Cretaceous) of the Sweetgrass Arch, Montana : a report of a formal subdivision and age...

von Cobban, William Aubrey
Veröffentlicht 1976