Write a brief note on the Mid-Atlantic Ridge.
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The ridge separates oceanic tectonic plates, and moves the plates apart at about 2.5 cm per year.
The Mid-Atlantic Ridge includes a deep rift valley which runs along the middle of the ridge along almost its entire length. At the rift, the boundary between tectonic plates, magma from the mantle reaches the seafloor. New magma emerges onto the ocean floor near the ridge axis. The crystallized magma forms new crust of basalt and gabbro.
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