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Convection currents also recycle lithospheric materials back to the mantle.
Definition of sea floor spreading in science. Seafloor spreading and other tectonic activity processes are the result of mantle convection. 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. The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid ocean ridge is the spreading half rate and is equal to half of the spreading rate. 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.
Information and translations of seafloor spreading in the most comprehensive dictionary definitions resource on the web. Convection currents within the mantle take the continents on a conveyor belt ride of oceanic crust that over millions of years takes them around the planet s surface. Meaning of seafloor spreading. 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.
Seafloor spreading is the mechanism for wegener s drifting continents. Convection currents carry heat from the lower mantle and core to the lithosphere. Sea floor spreading synonyms sea floor spreading pronunciation sea floor spreading translation english dictionary definition of sea floor spreading. Geological science 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.
Mantle convection is the slow churning motion of earth s mantle. Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them. Spreading rates determine if the ridge is fast intermediate or slow.
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