Process by which ocean floors spreadlaterally from crests of main ocean ridges. As material moves laterallyfrom the ridge, new material replaces it along the ridge crest by wellingupward from the mantle. compare continental drift , plate tectonics
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Process by which ocean floors spreadlaterally from crests of main ocean ridges. As material moves laterallyfrom the ridge, new material replaces it along the ridge crest by wellingupward from the mantle. compare continental drift , plate tectonics