Definition Of Sea Floor Spreading In Science

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.

Definition of sea floor spreading in science. 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. Sea floor spreading synonyms sea floor spreading pronunciation sea floor spreading translation english dictionary definition of sea floor spreading. Mantle convection is the slow churning motion of earth s mantle. Seafloor spreading and other tectonic activity processes are the result of mantle convection.

Spreading rates determine if the ridge is fast intermediate or slow. Meaning of seafloor spreading. 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. 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.

Seafloor spreading is the mechanism for wegener s drifting continents. Convection currents carry heat from the lower mantle and core to the lithosphere. Information and translations of seafloor spreading in the most comprehensive dictionary definitions resource on the web. Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them.

This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century. 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. Spreading rate is the rate at which an ocean basin widens due to seafloor spreading.