how lithospheric plates formed?
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As plates move away from each other the lithosphere thins and tears. At these divergent plate boundaries new oceanic lithosphere is created in the gaps from upwelling magma from the mantle. This upwelling magma forms mid-ocean ridges, long mountain chains that mark the boundaries between diverging plates.
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Stable convention cells formed in the mantle and started driving plate movements and subduction,and plate tectonics began to shape the earth's surface,the search belive...
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