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Impact to Ocean Floors - Sea Floor Spreading
When the oceanic plate move apart due to the swelling and cooling of the magma, new ocean floor are formed. This is known as Sea Floor Spreading. New oceanic crust is formed through volcanic activities starting at the mid-ocean ridges and gradually moving away from the ridge. Seafloor spreading explains the Webener's continental drift theory of plate tectonics. When oceanic plates move apart, tensile stress creates fractures in the lithosphere. The magma rises up through these fractures and then cools on the ocean floor to form new sea floor. Due to this process of spreading, younger rocks are found closer to the spreading zone while older rocks are found away from the spreading zone.
When the oceanic plate move apart due to the swelling and cooling of the magma, new ocean floor are formed. This is known as Sea Floor Spreading. New oceanic crust is formed through volcanic activities starting at the mid-ocean ridges and gradually moving away from the ridge. Seafloor spreading explains the Webener's continental drift theory of plate tectonics. When oceanic plates move apart, tensile stress creates fractures in the lithosphere. The magma rises up through these fractures and then cools on the ocean floor to form new sea floor. Due to this process of spreading, younger rocks are found closer to the spreading zone while older rocks are found away from the spreading zone.