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Thursday, July 30, 2020 | History

4 edition of Subduction zone and crustal dynamics of western Washington found in the catalog.

Subduction zone and crustal dynamics of western Washington

Subduction zone and crustal dynamics of western Washington

a tectonic model for earthquake hazards evaluation

  • 75 Want to read
  • 9 Currently reading

Published by U.S. Dept. of the Interior, U.S. Geological Survey in [Reston, Va.?] .
Written in English

    Subjects:
  • Subduction zones -- Washington (State),
  • Earthquake hazard analysis -- Washington (State),
  • Earth -- Crust

  • Edition Notes

    Statementby Dal Stanley, Antonio Villaseñor, and Harley Benz
    SeriesOpen-file report -- 99-311, U.S. Geological Survey open-file report -- 99-311
    ContributionsVillaseñor, Antonio, Benz, Harley M., Geological Survey (U.S.)
    The Physical Object
    FormatMicroform
    Pagination90 leaves
    Number of Pages90
    ID Numbers
    Open LibraryOL13626575M
    OCLC/WorldCa43507063

    The geology of the Pacific Northwest includes the composition (including rock, minerals, and soils), structure, physical properties and the processes that shape the Pacific Northwest region of North region is part of the Ring of Fire: the subduction of the Pacific and Farallon Plates under the North American Plate is responsible for many of the area's scenic features as well as.   Dave notes there are many other faults crisscrossing western Washington that threaten to trigger earthquakes. Some, such as the deep earthquakes that have occurred in , , and , have a much higher rate of reoccurrence than that of the Cascadia subduction fault, but with shorter and less intense shaking and lower consequences.

    Cascadia subduction zone, we have developed a 3D CVM version of the crust and mantle in the Pacific Northwest (Stephenson ). The areal extent of the model is shown in Fig. 1. The model consists of six geologic units: continental sedimentary basins, continental crust, continental man-tle, oceanic sediments, oceanic crust, and oceanic mantle. 4 Cascadia Subduction Zone “Then there were lightning flashes, rumblings, and peals of thunder, and a great earthquake. It was such a violent earthquake that there has never been one like it since the human race began on Earth.” Book of Revelation “Earthquake said, ‘Well, I shall tear up the earth.’.

    Arcay D, Tric E, Doin MP () Numerical simulations of subduction zones: effect of slab dehydration on the mantle wedge dynamics. Phys Earth Planet Inter – Google Scholar Arculus RJ, Johnson RW () Island-arc magma sources: a geochemical assessment of the roles of slab derived components and crustal contamination. In this article, a case is made for very-large or primary seismogenic structures in convergent margins, based on anomalous large earthquake magnitudes (Mw 8 - 9) relative to rupture lengths. Out of 56, earthquakes (magnitudes ≥ 5) cataloged worldwide, the 10 largest events in transform, divergent, and interior settings average magnitudes of -


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Subduction zone and crustal dynamics of western Washington Download PDF EPUB FB2

{{Citation | title=Subduction zone and crustal dynamics of western Washington [microform]: a tectonic model for earthquake hazards evaluation / by Dal Stanley. Crustal structure and earthquake hazards of the subduction zone in southwestern British Columbia and western Washington [Unknown.] on *FREE* shipping on qualifying offers.

Crustal structure and earthquake hazards of the subduction zone in southwestern British Columbia and western WashingtonAuthor. Unknown. Subduction zone and crustal dynamics of western Washington: a tectonic model for earthquake hazards evaluation Author: W D Stanley ; Antonio Villaseñor ; Harley M Benz ; Geological Survey (U.

SUBDUCTION ZONE AND CRUSTAL DYNAMICS OF WESTERN WASHINGTON: A TECTONIC MODEL FOR EARTHQUAKE HAZARDS EVALUATION By Dal Stanley, Antonio Villaseñor, and Harley Benz Denver Federal Center, Denver, CO Phone email [email protected] Open-File Report On-line Edition.

SUBDUCTION ZONE AND CRUSTAL DYNAMICS OF WESTERN WASHINGTON: A TECTONIC MODEL FOR EARTHQUAKE HAZARDS EVALUATION. By Dal Stanley, Antonio Villaseñor, and Harley Benz. Denver Federal Center, Denver, CO Phone email [email protected] Open-File Report ??.

SUBDUCTION ZONE AND CRUSTAL DYNAMICS OF WESTERN WASHINGTON: A TECTONIC MODEL FOR EARTHQUAKE HAZARDS EVALUATION By Dal Stanley, Antonio Villasenor, and Harley Benz USGS Open-File Report On-line Edition ˜˜NOAA Tsunami Project Cascadia Earthquake Region Workgroup (CREW) Washington Emergency Management Division.

The subduction zone boundary and crustal features in Western Washington appear in important detail when various data sets are combined. The seismicity patterns and previously mapped faults provide a basic interpretive background for further understanding of the features needed to properly assess future earthquake hazards.

Seismic reflection profiles shot across the Cascadia forearc show that a 5–15 km thick band of reflections, previously interpreted as a lower crustal shear zone. The Cascadia subduction zone. The Cascadia subduction zone last ruptured over years ago on Janu The average time between large earthquakes is about years, but has been as little as years, and more than 1, years.

The Seattle fault. The Seattle fault last ruptured about 1, years ago in AD – Examples of local tsunami threats in Washington are tsunamis generated from earthquake events on the Cascadia subduction zone or local crustal faults such as the Seattle or Tacoma faults.

A distant tsunami, also called a distant-source tsunami, a far-field tsunami, or a tele-tsunami, is from a faraway source, sometimes on the other side of the.

Crustal seismicity in the Puget Sound basin may result indirectly from the presence of the arch in the underlying Juan de Fuca plate. North American dynamics and western U.S. tectonics, Reviews of Geophysics, 10 Lars E.

Borg, Boron and lithium isotopic variations in a hot subduction zone—the southern Washington Cascades, Chemical. Subduction zone and crustal dynamics of western Washington: a tectonic model for earthquake hazard evaluation H Benz; Stanley, D., Villasenor, A., Benz, H., Subduction zone and crustal.

Figure 1b--Subduction zone section based upon earthquake tomography of Stanley, VIllasenor, and Benz (). Geological Survey Open-File Report On-line Edition, Subduction zone and crustal dynamics of western Washington: A tectonic model for earthquake hazards evaluation.

Subduction zone recycling processes and the rock record of crustal suture zones. David W. Scholl, a Roland von Huene b. a Department of Geology and Geophysics, University of Alaska, Fairbanks, AKUSA. b Department of Geology, University of California, Davis, CAUSA.

Subduction Zone and Crustal Dynamics for Western Washington: a tectonic model for earthquake hazards evaluation; Ebey's Landing NH Reserve.

Fort Vancouver NHS. Klondike Gold Rush NHP. Lake Chelan NRA. Geologic Map of the Chelan 30 x 60 Minute Quadrangle, Washington. Mount Rainier NP. CVO website about Mt. Rainier. Landslides at Mount Rainier. We propose instead that horizontal subduction triggered shortening in the hinterland of the mantle lithosphere rather than beneath the extinct Western Cordillera arc, resulting in the growth of a second complete crustal wedge overriding a mantle thrust zone, and that the width of the flat slab set the location of the Eastern Cordillera.

Stanley, D., Villasenor, A. & Benz, H. Subduction Zone and Crustal Dynamics of Western Washington: A Tectonic Model for Earthquake Hazards Evaluation Open File Report 99– (US Geological.

Get this from a library. Crustal structure and earthquake hazards of the subduction zone in southwestern British Columbia and western Washington. [Michael A Fisher; Geological Survey (U.S.),].

Strain from the Cascadia Subduction Zone plays a role in some crustal earthquakes in Western Washington and Oregon but shearing of California as the Pacific Plate grinds along the western edge of the North American Plate to the south plays a bigger role in the generation of crustal earthquakes.

M.M. acknowledges support from FONDECYTthe Millennium Nucleus “The Seismic Cycle Along Subduction Zones” grant NC, and the Research Center for. The tectonic evolution of the region is here summarized using a schematic reconstruction and a table listing the main tectonic events ().The Philippine Sea Plate is surrounded by subduction zones, and has been formed by sea-floor and back-arc spreading along at least three different axes (Fig.

1, Fig. 2).The first and the oldest portion of the plate, the West Philippine Basin, formed during.General background Earthquake sources and hazard. The Puget Sound region (Puget Lowland) of western Washington contains the bulk of the population and economic assets of the state, and carries seven percent of the international trade of the United States.

All this is at risk of earthquakes from three sources: A great subduction earthquake, such as the magnitude M 9 Cascadia earthquake.Washington’s major crustal faults can generate quakes as big as magnitude 7 to While that’s far less powerful than a magnitude 9 subduction zone megaquake, a quake of that size near any.