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Subduction


SVS >> Subduction
Movie ID Title
Farallon started off normally enough. It plunged beneath the North American Plate at a forty-five degree angle. This process sprouted volcanoes to form the Sierra Nevada in what is now California. Next, mantle motions pulled North America westward over Farallon, and the plate scraped along the bottom of the continent - for fifteen hundred kilometers. As North America continued its westward trek, Farallon settled to the bottom of the mantle. Crust that had accumulated above the sinking plate then bobbed up like a cork to form the Rocky Mountains. 1322 The Farallon Plate

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