Last edited by Daik
Saturday, May 16, 2020 | History

2 edition of Accreted terranes of the north Cascades Range, Washington found in the catalog.

Accreted terranes of the north Cascades Range, Washington

Accreted terranes of the north Cascades Range, Washington

Spokane to Seattle, Washington, July 21-29, 1989

  • 344 Want to read
  • 26 Currently reading

Published by American Geophysical Union in Washington, D.C .
Written in English

    Subjects:
  • Geology -- Cascade Range -- Guidebooks.,
  • Geology -- Washington (State) -- Guidebooks.

  • Edition Notes

    Statementleaders, Rowland W. Tabor ... [et al.].
    SeriesField trip guidebook -- T307., Field trip guidebook (International Geological Congress) -- T307.
    ContributionsTabor, R. W., American Geophysical Union., International Geological Congress (28th : 1989 : Washington, D.C.)
    The Physical Object
    Paginationix, 62 p. :
    Number of Pages62
    ID Numbers
    Open LibraryOL17971128M
    ISBN 100875906125

      CWU's Nick Zentner presents 'Exotic Terranes of the Pacific Northwest' - the 20th talk in his ongoing Downtown Geology Lecture Series. Recorded at Hal Holmes Center on Febru in. In addition, the Coast Range of British Columbia, this book says, was made of accreted terranes just like the North Cascades. In short, the picture given is that if you take away the High Cascade volcanoes, then you'd have two ranges: 1. the Cascades south of about I to northeast California, and 2. the Cascades north of about I plus the Coast Range of BC and reaching up into the coastal ranges of Alaska.

    North Cascades National Park is an American national park in the state of more than , acres (, ha), North Cascades National Park is the largest of the three National Park Service units that comprise the North Cascades National Park Cascades National Park consists of a northern and southern section, bisected by the Skagit River that flows through Ross Location: Whatcom, Skagit, and Chelan . Geologic Map of the North Cascade Range, Washington By Ralph A. Haugerud and Rowland W. Tabor Rocks of the Chelan Mountains terrane, including Cascade River Schist, form foreground metamorphic episodes in the North Cascades, Washington.

    You won't find info on the NPS website--the hikes off the Mt Baker highway aren't in the national park. They're in Mt Baker-Snoqualmie National is a ranger station in Glacier where you can stop when there for current info.   The video is about the geology and the geologists of the Canadian Cordillera. The current concepts concerning the origin of the mountains of western Canada and .


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Accreted terranes of the north Cascades Range, Washington Download PDF EPUB FB2

The Cascade Range is an active north-trending volcanic arc at the western edge of North America (Figure 1). At the northern end of the range, between 47°N and 49°N, the average elevation increases, peaks become sharper, numerous small glaciers survive on the higher slopes, and volcanic Accreted terranes of the north Cascades Range of the Cascade arc.

Get this from a library. Accreted terranes of the north Cascades Range, Washington: Spokane to Seattle, Washington, July[R W Tabor; American Geophysical Union.;]. Snow-covered Mt. Baker, looking west from the North Cascades National Park, Washington.

The active volcano results from the ongoing subduction of the Juan de Fuca Plate beneath North America. It pokes up through granite that intrudes metamorphic rocks of older accreted terranes.

The two peaks in the middle ground are the Twin Sisters. Most of the Terranes of the North Cascades were accreted during the _____ and early Cenezoic. Start studying North Cascades NP. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Click card to see definition 👆 Tap card to Accreted terranes of the north Cascades Range definition 👆 Washington.

The Geology of the North Cascades Range Trip Log Accreted Terranes of the North Cascades Range, Washington: Spokane to Seattle, Washington, July 21–29,Volume Cited by: 4. The sharp peaks, and rugged terrain of the northern portion of the range have an average elevation of 7, feet and are home to numerous alpine glaciers.

The Range receives an average of 80 inches of rain annually, and as a result, it is densely vegetated. Unmetamorphosed sedimentary and volcanic accreted terrane rocks are widespread across the western part of the Cordillera with metamorphosed rocks present primarily in the northern California Coast Ranges, the northern Sierra Nevada, the Blue Mountain region of Oregon, the Klamath Mountains, and the North Cascades.

Accreted terranes may be called exotic terranes, suspect terranes, or tectonostratigraphic terranes. The terms all mean the same thing.

The terms all mean the same thing. The word terrane, with its distinctive spelling, is technically a tectonostratigraphic terrane, a piece of the earth's crust or lithosphere that has been accreted to the edge. Orthogneiss, metamorphosed igneous rock of Chelan Mountains terrane, North Cascades National Park, Washington.

There’s also metamorphic rock in the western Cascades–including the low-temperature/high pressure type called blueschist –and thrust faulted and folded sedimentary rock in the Methow area, east of the crystalline core. The Swakane Gneiss and the overlying Napeequa Complex in the North Cascade range, Washington, were metamorphosed and deformed during development of a.

The North Cascades are still rising, shifting and forming. Geologists believe that these mountains are a collage of terranes, distinct assemblages of rock separated by faults. Fossil and rock magnetism studies indicate that the North Cascades terranes were formed thousands of miles south in the Pacific Ocean.

The North Cascades are a section of the Cascade Range of western North span the border between the Canadian province of British Columbia and the U.S. state of Washington and are officially named in the U.S.

and Canada as the Cascade Mountains. The portion in Canada is known to Americans as the Canadian Cascades, a designation that also includes the mountains above the east Elevation: 10, ft (3, m).

The North Cascade Range includes the southernmost part of the Coast Mountains batholith (Coast Plutonic Complex), which is a large volume continental magmatic arc that was active from the Jurassic to the Eocene (ca. –45 Ma) (e.g., Gehrels et al., ).

Near the Washington–British Columbia border, the locus of early (ca. – Ma. Overview of the Terranes of Washington / Eric S. Cheney and John T. Figge Tectonic Evolution of the Southern Coast– Cascade Oregon, Northwestern Washington and Southwestern British Columbia / James W.

Monger and Edwin H. Brown Geology of the North Cascades: Summary and Enigmas / Rowland W. Tabor and Ralph A. Haugerud The foundation of the North Cascades is a complex mosaic of terranes whose early history includes deposition of sediments and volcanic rocks in oceans and volcanic arcs.

Plate collisions brought the pieces together (accreted them), probably somewhere along the west side of North America by about 90 million years ago (Cretaceous). It was added (accreted) to the North American continent during the Mesozoic –probably some million years ago.

Photo 6. Wallowa Mountains, Oregon. Just west of Hell’s Canyon are the Wallowa Mountains, Oregon’s premier alpine country outside of the Cascades.

Like Hell’s Canyon, the Wallowas contain the accreted Wallowa terrane. Evolution of the Jura-Cretaceous North American Cordilleran margin: Insights from detrital-zircon U-Pb and Hf isotopes of sedimentary units of the North Cascades Range, Washington Article Oct The South Cascades Province in Washington extends from the Columbia River to the south and Interstate 90 to the north.

The southern Cascade Range skyline is dominated by three massive stratovolcanoes: Mount Rainier, a towering giant with the highest elevation in Washington of 14, feet, Mount Adams, the second highest peak in the Pacific Northwest with an elevation of 12, feet, and. Books Advanced Search New Releases Best Sellers & More Children's Books Textbooks Textbook Rentals Best Books of the Month of 91 results for Books: Travel: United States: Washington: North Cascades.

These terranes are the pericratonic Quesnel terrane in the Okanogan Highlands (unit Q of Fig. and Plate ), a collage of terranes in the Cascade Range of Washington (units NW and NE Cascade terranes of Fig.

), the Wallowa terrane in the southeastern corner of the state (unit R in Fig. ), and the pericratonic Siletz terrane of the. DEGLACIATION OF THE NORTH CASCADE RANGE, WASHINGTON AND BRITISH COLUMBIA, FROM THE LAST GLACIAL MAXIMUM TO THE HOLOCENE.

J.L. RIEDEL* U.S. National Park Service, North Cascades National Park, Sedro-Woolley, WAUSA. metamorphism of previously accreted terranes. Cascade volcanic rocks associatedFile Size: 2MB.1. Down-dragging of the plates forms a trench at the top of the subduction zone.

2. Intense heat melts some of the of the subducting plate; part of the resulting magma comes to the surface and forms a chain of volcanoes all along the length of the subduction zone I.e.

Cascade Range 3.The pre-Tertiary rocks of the Cascade Range are mostly terranes that accreted to North America during the Cretaceous (Dragovich et al., ). Accretion of these terranes extended North America westward, so that Tertiary rocks in the Cascade Range were deposited upon a cratonic-like basement.