The Permian And Triassic Seven Devils Group Western Idaho And Northeastern Oregon

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The Permian And Triassic Seven Devils Group Western Idaho And Northeastern Oregon

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Author : Tracy Lowell Vallier
language : en
Publisher:
Release Date : 1977

The Permian And Triassic Seven Devils Group Western Idaho And Northeastern Oregon written by Tracy Lowell Vallier and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Geology categories.

Permian And Triassic Seven Devils Group Western Idaho And Northeastern Oregon

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Author : Geological Survey (U.S.)
language : en
Publisher:
Release Date : 1975

Permian And Triassic Seven Devils Group Western Idaho And Northeastern Oregon written by Geological Survey (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with categories.

The Permian And Triassic Seven Devils Group Western Idaho And Northeastern Oregon

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Author : Tracy L. Vallier
language : en
Publisher:
Release Date : 1977

The Permian And Triassic Seven Devils Group Western Idaho And Northeastern Oregon written by Tracy L. Vallier and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Geology categories.

The Permian And Triassic Seven Devil Group Western Idaho And Northeastern Oregon

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Author : Tracy L. Vallier
language : en
Publisher:
Release Date : 1977

The Permian And Triassic Seven Devil Group Western Idaho And Northeastern Oregon written by Tracy L. Vallier and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with categories.

U S Geological Survey Bulletin

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Author :
language : en
Publisher:
Release Date : 1983

U S Geological Survey Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Geology categories.

U S Geological Survey Bulletin

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Author : Arthur Edward Nelson
language : en
Publisher:
Release Date : 1983

U S Geological Survey Bulletin written by Arthur Edward Nelson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Basalt categories.

Deformation Quadrangle, 1n the Stensgar Mountain Stevens County, Washington By James G. Evans Abstract Most deformation of the Middle and Late Proterozoic (Deer Trail and Windermere Groups) and Lower Cambrian (Addy Quartzite and Old Dominion Limestone) rocks in the Stensgar Mountain quadrangle occurred during the Mesozoic (pre-Late Jurassic, possibly Early Jurassic or Triassic), in con- nection with duplex thrusting. The principal deformation occurred in stages that generally involved: (1) thrusting, (2) penetrative dynamothermal metamorphism in the greenschist facies, and (3) renewed thrusting. The initial thrusting may have included formation of the duplex fault zone, moderate tilting of the sedimentary and volcanic rocks, and possibly low-grade metamorphism. The dynamothermal metamorphism resulted in development of a slaty cleavage that dips steeply west, as well as numerous minor and a few large folds that plunge at low to moderate angles, generally north. The folds have axial planes parallel to cleavage. Clasts in conglomerates were flattened parallel to cleavage, and their long axes were aligned north-northeastward, subparallel to fold axes. This extension direction parallels the trend of the Kootenay arc, a relation not typical of orogenic belts. The dynamothermal metamorphism included coaxial compressive pulses separated by periods of stress relaxation. The penetra- tive deformation could have been accompanied by slip on preexisting faults, including a large strike-slip component for the roof (Stensgar Mountain thrust) and floor (Lane Mountain thrust) thrusts of the duplex fault zone. Later movements along these roof and floor thrusts and connecting splays are suggested by nonfolded traces of the faults and the faulted, dynamothermally metamorphosed cataclasite adjacent to the Lane Mountain thrust. The penetrative deformation that affected the Stensgar Mountain quadrangle also affected the rest of northeastern Washington and southeastern British Columbia; it may have been the result of oblique convergence during Mesozoic subduction.

Wallowa Whitman National Forest N F Hells Canyon National Recreation Area N R A Comprehensive Management Plan Baker County Wallowa County

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Author :
language : en
Publisher:
Release Date : 1999

Wallowa Whitman National Forest N F Hells Canyon National Recreation Area N R A Comprehensive Management Plan Baker County Wallowa County written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.

U S Geological Survey Professional Paper

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Author :
language : en
Publisher:
Release Date : 1984

U S Geological Survey Professional Paper written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Geology categories.

Volcanism And Tectonism In The Columbia River Flood Basalt Province

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Author : Stephen P. Reidel
language : en
Publisher: Geological Society of America
Release Date : 1989

Volcanism And Tectonism In The Columbia River Flood Basalt Province written by Stephen P. Reidel and has been published by Geological Society of America this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Science categories.

Changes In Stratigraphic Nomenclature By The U S Geological Survey

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Author : Geological Survey (U.S.).
language : en
Publisher:
Release Date : 1977

Changes In Stratigraphic Nomenclature By The U S Geological Survey written by Geological Survey (U.S.). and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Geology, Stratigraphic categories.