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1964 Alaskan Earthquake led to understanding of plate tectonics

Stashed in: Weather!, Science Too, Earth, Alaska

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Plate tectonics is so accepted now that many of us don't understand that it was only within living memory that the theory was worked out. Geologists on the ground used local phenomena -- in this case barnacles! -- to understand how the movements of tectonic plates could manifest as earthquakes.

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