Mega-Earthquake Likely To Hit Northwest US In Next 50 Years

A major earthquake, comparable to the one that hit Chile earlier this year, could strike the Pacific Northwest coast of the United States, Oregon State geologists say.There is more than a one-in-three chance that it will happen within the next 50 years.The team's new analysis has provided fresh insights into the Northwest's turbulent seismic history – where magnitude 8.2 (or higher) earthquakes have occurred 41 times during the past 10,000 years. Those earthquakes were thought to generally occur every 500 years, but as scientists delve more deeply into the offshore sediments and other evidence, they have discovered a great deal more complexity to the Cascadia Subduction Zone. read more

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