نمایش نتیجه 1 تا 1 از 1 نتیجه یافت شده برای rift zone:
n: the zone along which crustal plates separate because of slowly diverging convection currents in the semisolid, deformable mantle. As the rift widens and the land masses on both sides move apart, new oceanic crust is formed. Since the MidAtlantic rift zone opened about 200 million years ago, North and South America have been moving away from Europe and Africa at a rate of 11/2 inches a year.
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