Earth and Planetary Sciences ETDs

Author

Jon A. Durham

Publication Date

5-2-1972

Abstract

The map-area is located along the northwest flank of the Big Belt Mountains, Montana and includes the Eldorado thrust which marks the zone of frontal breakthrough where thrusts of the Cordilleran foldbelt are in contact with the Rocky Mountain foreland. Sedimentary rocks range in age from Precambrian to Cretaceous. Two formations of the Precambrian Belt Series, the Greyson Shale (Oldest) and Spokane Shale are present. Overlaying the Spokane Shale are five formations of the Cambrian; Flathead Quartzite (oldest), Wolsey Shale, Meagher Limestone, Park Shale, and Pilgrim Limestone. Their total aggregate thickness is about 1200 feet.

Degree Name

Earth and Planetary Sciences

Level of Degree

Masters

Department Name

Department of Earth and Planetary Sciences

First Committee Member (Chair)

Lee A. Hoodward

Second Committee Member

J. Paul Fitzsimmons

Third Committee Member

Albert M. Kudo

Fourth Committee Member

Charles T. Siemene

Language

English

Document Type

Thesis

durham_plate_2_full.tif (697969 kB)
Plate 2

durham_tectonic_map.tif (562228 kB)
Tectonic map

durham_tectonic_map_50.jpg (26720 kB)
Tectonic map 2

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