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Date: 2014-08-23 23:24:57Plate tectonics Earthquake Cascadia earthquake Cascadia subduction zone Seattle Fault Vancouver Island earthquake Richter magnitude scale Tsunami Intraplate earthquake Seismology Geology Geography of the United States | Cascadia Shallow Earthquakes 2009 Executive SummaryAdd to Reading ListSource URL: www.crew.orgDownload Document from Source WebsiteFile Size: 1,64 MBShare Document on Facebook |