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7 gen 1962 anni - Harry H. Hess

Descrizione:

Harry Hess created the theory of sea floor spreading. He discovered that the ocean was shallow in the middle and called it Mid Ocean Ridges.

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Tectonic Plates Timeline: Kyle Klodnick

ByKyle Klodnick

11 gen 2018

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7 gen 1962 anni

Adesso

~ 63 years ago

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