Define Seafloor Spreading

Convection currents carry heat from the lower mantle and core to the lithosphere. In 1912 when alfred wegener proposed that the continents had once been joined together and had split apart the biggest weakness in his hypothesis was the. Seafloor spreading definition a process in which new ocean floor is created as molten material from the earth s mantle rises in margins between plates or ridges and spreads out.

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N a series of processes in which new oceanic lithosphere is created at oceanic ridges spreads away from the ridges and returns to the earth s interior.

Define seafloor spreading. Mantle convection is the slow churning motion of earth s mantle. Seafloor spreading definition is the divergence at mid ocean ridges of the tectonic plates underlying the oceans that is due to upwelling from the earth s interior of magma which solidifies and adds to the spreading plates. Seafloor spreading is a process that occurs at mid ocean ridges where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Seafloor spreading and other tectonic activity processes are the result of mantle convection.

Seafloor spreading synonyms seafloor spreading pronunciation seafloor spreading translation english dictionary definition of seafloor spreading. Earlier theories by alfred wegener and alexander du toit of continental drift postulated that. Convection currents also recycle lithospheric materials back to the mantle.

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