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Big earthquake in Northern California was in seismically active area
Big earthquake in Northern California was in seismically active area

Sunday’s magnitude 6.9 earthquake occurred close to the Mendocino Triple Junction, located in the Pacific Ocean off the coast of Cape Mendocino, said U.S. Geological Survey seismologist David Oppenhiemer.   The site of many earthquakes, it  is the northern terminus of the San Andreas fault and the southern end of the Cascadia Subduction Zone, capable of producing a magnitude 9.0 earthquake and tsunami that can hit Japan. Sunday’s earthquake occurred west of the triple junction on the Gorda plate, which is being hit by the northern advance of the Pacific plate as it moves toward Alaska. The Gorda plate is pushing itself underneath the North American plate -- and...

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