Sea floor spreading

Sea floor spreading is a key concept in plate tectonics and structural geology, explaining the formation and lateral movement of oceanic lithosphere. It occurs at mid-oceanic ridges, which are divergent plate boundaries located along the ocean floor. As tectonic plates pull apart due to mantle convection currents, magma rises from the asthenosphere to fill the gap. Upon reaching the ocean _______ _______ ______ ________ ______ _______ ____ __________ __________ __________ _______.
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