Provenance of Cenozoic Continental Sandstones in Southwest Montana PDF Download
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Author: Caleb N. Stroup
Publisher:
ISBN:
Category : Detritus
Languages : en
Pages : 234
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Book Description
Author: Caleb N. Stroup
Publisher:
ISBN:
Category : Detritus
Languages : en
Pages : 234
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Book Description
Author: E. Troy Rasbury
Publisher: Geological Society of America
ISBN: 0813724872
Category : Science
Languages : en
Pages : 204
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Book Description
Author: Edward Thompson Ruppel
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 84
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Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 424
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Book Description
Author: Mrs. Gambold
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 1252
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Book Description
Author: Bruce Franklin Curtis
Publisher: Geological Society of America
ISBN: 0813711444
Category : Geology
Languages : en
Pages : 290
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Book Description
Author: Montana Geological Society. Field Conference & Symposium
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 432
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Author: Alex L. Mankin
Publisher:
ISBN:
Category :
Languages : en
Pages : 89
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Book Description
Detrital zircon U-Pb geochronology and sandstone petrography are studied to constrain the provenance of middle Cenozoic fluvial sandstone in the Central Rocky Mountains. Petrographic point counting of 12 sandstone samples show immature compositions, and combined recycled orogen provenance of the proximal Laramide uplifts and magmatic arc provenance of the distal middle Cenozoic magmatism in western and southwestern North America. A total of 670 detrital zircon U-Pb ages show a 17-44 Ma population, derived from the distal middle Cenozoic magmatism, and populations of 45-218 Ma, 220-708 Ma, 948-1326 Ma, 1332-1816 Ma, and 1825-3314 Ma, derived or recycled from the Precambrian basement cores and the Phanerozoic sedimentary rocks on the flanks of the local Laramide uplifts. Detrital zircon U-Pb geochronology also yield maximum depositional ages between 37.8±1.1 Ma and 27.3±1.1 Ma for seven sandstone samples. These ages are generally consistent with the available radiometric ages of tuff beds and magnetostratigraphic ages.
Author: Philip B. King
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 92
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Author: Colby J. VanDenburg
Publisher:
ISBN:
Category : Geology, Stratigraphic
Languages : en
Pages : 304
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