How big can quake be? Magnitude scale is open-ended, but biggest recorded quake was May 21, 1960, the great Chilean earthquake, 57 yrs ago. http://pic.twitter.com/LNxesMc4z4
— Susan Hough (@SeismoSue) May 21, 2017
via Twitter https://twitter.com/SeismoSue
May 21, 2017 at 05:42PM
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