Sea-Floor Spreading 1
Sea-Floor Spreading 1 : A hypothesis that the oceanic crust is increasing by convective upwelling of magma along the midoceanic ridges or world rift system, and a moving away of the new material at a rate of from 1 to 10 cm(o.4 to 4 in.) per year. This movement provides the source of power in the hypothesis of plate tectonics. This hypothesis supports the continental displacement hypothesis
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