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Abraham Ortelius proposed that the continents had once been joined but were pulled apart by "earthquakes and floods."
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Nicolaus Steno - Proposed the law of superposition
each rock layer is older than the one on top of it -
James Hutton tested the law of superposition
he used Steno’s Law of Superposition and compared rock layers to rocks above and below the rock. -
Alfred Wegner proposes "Continental Drift"
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Arthur Holmes- proposed convection is the force driving continental drift.
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Robert S. Dietz named Hess's idea ¨seafloor spreading¨
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Harry Hess names "spreading ridges"
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Dan McKenzie proposed the theory of plate tectonics
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Drummond H. Matthews
he began to study deep crustal seismic events that allowed research into the structure and evolution of oceanic and continental crust. -
Matthews and Vine both received the Hughes Medal