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3 edition of Tectonic rotation of the Oregon western cascades found in the catalog.

Tectonic rotation of the Oregon western cascades

James Magill

Tectonic rotation of the Oregon western cascades

by James Magill

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  • 21 Currently reading

Published by State of Oregon, Dept. of Geology and Mineral Industries in Portland, Or. (1069 State Office Building, Portland 97201) .
Written in English

    Places:
  • Oregon.,
  • Cascade Range.
    • Subjects:
    • Geology, Structural -- Oregon.,
    • Geology, Structural -- Cascade Range.

    • Edition Notes

      Bibliography: p. 40-45.

      StatementJames Magill and Allan Cox.
      SeriesSpecial paper / State of Oregon, Department of Geology and Mineral Industries ;, 10, Special paper (Oregon. Dept. of Geology and Mineral Industries) ;, 10.
      ContributionsCox, Allan, 1926-1987.
      Classifications
      LC ClassificationsQE156.C3 M34 1980
      The Physical Object
      Paginationii, 67 p. :
      Number of Pages67
      ID Numbers
      Open LibraryOL3924598M
      LC Control Number81622246

      Paleomagnetic results from Cenozoic ( Ma) volcanic rocks of the Cascade Arc and adjacent areas indicate that moderate to large clockwise rotations are an important component of the tectonic history of the arc, Two mechanisms of rotation are suggested. The progressive increase in rotation toward the coast in arc and forearc rocks results from distributed dextral shear, which is likely. Title Sources; Measurement of the remanent magnetization of igneous rocks: an induction magnetometer, a portable drill, and a computer program: The motion of allochthonous terranes across the North Pacific Basin.

      MS Book and Mineral Company Oregon Geology and Mining History Catalog II - State and Miscellaneous Publications: J. D. / GEOLOGIC FORMATIONS OF WESTERN OREGON WEST OF LONGITUDE o 30', Portland, , 72 pages, A. / TECTONIC ROTATION OF THE OREGON WESTERN CASCADES, Portland, , pb, 67 pages, 21 figs., 3 tables, used, $   Paleomagnetic data from a transect across the Cascade arc in southern Washington were collected to test models of vertical axis rotations for this part of the Pacific Northwest and to provide information on the tectonic history of the St. Helens seismic zone. The 75 site-mean directions are divided into three groups based on isotopic, fission track, and stratigraphic by:

      With intra-arc extension of the southern Cascades and Siletzia rotation about an Euler pole near the SE corner of Washington (McCaffrey et al., ; Wells and Simpson, ), the forearc has rotated clockwise at a rate of ~1°/Ma (Wells, ). This has transposed the older western Cascades of Oregon . Post-Oligocene tectonic rotation of the Oregon western Cascade Range and the Kiamath Mountains: (). Potassium-argon ages from the Kiamath Falls area, south-central Oregon: IsochronlWest.


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Tectonic rotation of the Oregon western cascades by James Magill Download PDF EPUB FB2

Tectonic Rotation Of The Oregon Western Cascades - Special Paper 10 [James; Cox, Allan State Of Oregon Department Of Geology And Mineral Industries. Tectonic rotation of the Oregon western cascades (Special paper / State of Oregon, Department of Geology and Mineral Industries) [Magill, James] on *FREE* shipping on qualifying offers.

Tectonic rotation of the Oregon western cascades (Special paper / State of Oregon, Department of Geology and Mineral Industries)Author: James Magill. Tectonic rotation of the Oregon western cascades. Portland, Or. ( State Office Building, Portland ): State of Oregon, Dept. of Geology and Mineral Industries, (OCoLC) Material Type: Government publication, State or province government publication, Internet resource: Document Type: Book, Internet Resource: All Authors / Contributors.

Tectonic rotation of the Oregon Western Cascades. Alternative Title: Oregon Western Cascades. Name(s): Magill, James Cox, Allan, Oregon Department of Geology and Mineral Industries: Type of Resource: text: Genre: bibliography text-txt. Mechanisms of Cenozoic Tectonic Rotation, Pacific Northwest Convergent Margin, U.S.A.

Authors; Authors and affiliations and Cox, A.,Tectonic rotation of the Oregon western Cascades: Oregon Department of Geology and Mineral Wells R.E. () Mechanisms of Cenozoic Tectonic Rotation, Pacific Northwest Convergent Margin, U.S.A.

Cited by: Tectonic and climatic events are (1) the start of exhumation of the Olympic Mountains (Brandon et al., ), (2) the onset of uplift of the Oregon Coast Range (McNeill et al., ), (3) rotation.

Cascade arc migration is consistent with clockwise rotation of western Oregon determined from paleomagnetism (e.g., Magill and Cox, ; Wells, ; Wells et al., ), although slab rollback or flattening in response to changing slab buoyancy, terrane accretion, or mantle flow regime have all been proposed as possible contributors (e.g., Priest, ).Cited by:   Magnetic stratigraphy and tectonic rotation of the middle Eocene Coaledo Formation, southwestern Oregon D.

Prothero. 1 Department of Geology, Post‐Oligocene tectonic rotation of the Oregon western Cascade Range and the Klamath Mountains,Cited by: 7.

ment of the Coast Range and Western Cascades block. The eastern boundary of this block may lie beneath the High Cascades, a region of intense volcanism. The price of Special Paper 9 is $, that of Special Paper IO is Address orders to the Oregon Department of Geology and Mineral Industries, State Office Building.

Oregon's Willamette Valley is a tectonic forearc basin on the convergent margin of the northwestern United States, dividing an uplifted subduction complex of the Coast Range from active andesitic. Paleomagnetic data indicate that the Western Cascade Range from northern California to central Washington has undergone about 27° of clockwise rotation since 25 m.y.

by: OREGON wps, light wear, ex-lib, vg, 26 pp., 1 plt, 10 figs. Price: $ (stock#ORGSSP9) #10 Magill J. and Cox A. TECTONIC ROTATION OF THE OREGON WESTERN CASCADES wps, light wear, vg, 67 pp., 21 figs. Price: $ (stock#ORGSSP10) #12 Venkatakrishnan R.

et al. GEOLOGICAL LINEARS OF THE NORTHERN PART. flows from this formation yields a mean age of + m.y. These results establish that the Oregon. coastal block of Simpson and Cox () extends north to the Oregon-Washington border and that this. block has rotated clockwise 46 ø + 13 ø during the past 44 m.y.

The block. These d'Etat, Universitd Pierre et Marie Curie, Paris, 3 R.W. Simpson and A. Cox, Paleomagnetic evidence for tectonic rotation of the Oregon Coast Range, Geology 5,4 M.E. Beck and P.W. Plumley, Paleomagnetism of intrusive rocks in the Coast Range of Oregon: microplate Rotations in Middle Tertiary time, Geology 8, Cited by: 2.

About Cookies, including instructions on how to turn off cookies if you wish to do so. By continuing to browse this site you agree to us using cookies as described in. Michel Chaplet, Jean Chorowicz, François Roure, Fault patterns by space remote sensing and the rotation of western Oregon during Cenozoic times, Earth and Planetary Science Letters, /X(87), 81, 4, (), ().Cited by: Cascade block rotation could potentially explain why volcanism in the Oregon Cascades has migrated eastward.

The thin blue line in Fig. shows the inferred location of the Oregon coastline and the boundary with California 16 million years ago.

Rotation has. the Oregon Cascades also indicates a significant amount of clockwise rotation (Fig. Hammond () suggests that the Cascades and the Coast Ranges lay Cited by: 2. The plant on the cover of my book is the gorgeous cliff penstemon (Penstemon rupicola).

It is typical of cliffs and rocky areas of the Western Cascades, as well as being one of our showiest plants. It can indeed be found at Crater Lake and some other High Cascade sites, although Penstemon davidsonii is more common at higher elevations.

From 22 to 0 Ma, σ 3 in the Cascade arc rotated clockwise from approximately N-S to E-W. σ 1 rotated from subhorizontal to vertical at about 7 Ma, producing an extensional stress regime at Ma.

Rotation of σ 1 and σ 3 was likely a response to decreasing influence of ENE to NE compression at the Juan de Fuca plate-North American plate (JDFP-NAP) boundary relative to N-S compression and Cited by:. 4 Geochemical Database for Volcanic Rocks of the Western Cascades, Washington, Oregon, and California improve this report.

Work conducted between and by Jaroslav Lexa and reported here was carried out at the Cen-ter for Volcanology of the University of Oregon under NASA grants in cooperation with Andrew Duncan. Petrologic, tectonic, and metallogenic evolution of the Ancestral Cascades magmatic arc, Washington, Oregon, and northern California.

Geosphere 7 (5): Crossref, Google Scholar. du Bray EA, Bacon CR, John DA, Wooden JL, Mazdab by: 7.was a period of tectonic quiescence along the ancestral Cas­ cades. These relationships provide independent support of the two-phase model of tectonic rotation proposed by Magill and Cox ().

INTRODUCTION Tertiary tectonic movement of the Oregon Western Cascades and associated crustal blocks in the Pacific Northwest has been.