12/13/2011 -- Arizona 3.3M earthquake at DORMANT VOLCANIC CHAIN = Hat Knoll volcano / fault

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12/13/2011 -- Arizona 3.3M earthquake at DORMANT VOLCANIC CHAIN = Hat Knoll volcano / fault PLAY
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Blog post with screenshots of the Arizona volcanic area -- location coordinates -- and earthquake statistics: sincedutch.wordpress.com Latest Earthquake update: sincedutch.wordpress.com

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