3 Jul 1968 Jahr - Dan Mckenzie's Theory of Plate Tectonics In 1968, Dan Mckenzie tied together the theories of seafloor spreading and continental drift under a single theory - 'plate tectonics'. He proposed that the crust was partitioned into plates, which interacted with each other, creating phenomena such as volcanoes, mid-ocean ridges and trenches.
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3 Jul 1968 Jahr
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~ 57 years ago