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			November 22, 2009

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seafloor spreading, Geology And Oceanography

Related Category: Geology And Oceanography

seafloor spreading, theory of lithospheric evolution that holds that the ocean floors are spreading outward from vast underwater ridges. First proposed in the early 1960s by the American geologist Harry H. Hess, its major tenets gave great support to the theory of continental drift and provided a conceptual base for the development of plate tectonics.

Sections in this article:

Introduction
Discovery of the Mid-Ocean Ridges
Role of the Spreading Center
Supporting Evidence for Seafloor Spreading
Bibliography

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