Plate Tectonics - Plate Tectonics It is now uniformly...

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Plate Tectonics It is now uniformly agreed that the crustal plates of the Earth are in horizontal motion. This is called continental drift colloquially, and plate tectonics (see also this summary ) in technically more precise language. This is newly won knowledge. Although the idea has been around for almost a century, it was not generally accepted (indeed, was often considered crackpot) until the last few decades. The following animation illustrates the drift of the continental plates over the last 750 million years (Source) . Here is a better animation (but it is a 1.44 MB animated GIF file). Animation of the drift of the continental plates over the last 750 million years. Click the "stop" button on your browser to stop the animation at a particular time. Restart the animation by hitting the "reload" button on your browser. Click on the geologic time periods on the right for more information on those periods. The Drift of the Continents
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This note was uploaded on 12/04/2011 for the course ANT ANT2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

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Plate Tectonics - Plate Tectonics It is now uniformly...

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