| Nisqually Earthquake |
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The Puget Sound area where this earthquake occurred is prone to deep earthquakes due to the Juan De Fuca Tectonic Plate 's Subduction under the North American Plate , which causes stress in the former as it sinks into the Mantle . Similar significant earthquakes occurred in the same general region on April 29 , 1965 (magnitude 6.5, depth 63km), and April 13 , 1949 (magnitude 7.1, depth 53km). EXTERNAL LINKS |
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