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Filtering by: Creator Olsen, Keith A. Advisor Oles, Keith F. Subject Geology -- Montana -- Beaverhead County

Stratigraphy and depositional history of the Amsden and lower Quadrant Formations, Snowcrest Range, Beaverhead and Madison Counties, Montana

Creator:

Key, Colin F.

Abstract:

During the Late Mississippian-Early Pennsylvanian (latest Chesterian-early Morrowan), a thick sequence of shallow -water carbonate-clastic sediments, equivalent to the "Amsden" and lower Quadrant Formations, was deposited in the Snowcrest trough on the western margin of the northern Rocky Mountain Cordilleran platform in southwestern Montana. Today this late Chesterian sequence is...

Resource Type:

Masters Thesis
Structure and stratigraphy of the Little Sheep Creek area, Beaverhead County, Montana

Creator:

Sadler, R. Kumbe

Abstract:

The Middle and West Forks of Little Sheep Creek in the southern Tendoy Range have incised valleys across Cenozoic structural features exposing strata that range in age from the Mississippian to the Neoene. Paleozoic strata are 1,349 m thick and belong to the Mission Canyon Limestone, the Big Snowy, Amsden,...

Resource Type:

Masters Thesis