Define The Term Sea Floor Spreading

Seafloor spreading synonyms seafloor spreading pronunciation seafloor spreading translation english dictionary definition of seafloor spreading.

Define the term sea floor spreading. In the theory of plate tectonics the process by which new oceanic crust is formed by the convective upwelling of magma at mid ocean ridges resulting in. Spreading rate is the rate at which an ocean basin widens due to seafloor spreading. Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor. 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 rates determine if the ridge is fast intermediate or slow. 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 mid atlantic ridge for instance separates the north american plate from the eurasian plate and the south american plate from the african plate the east pacific rise is a mid ocean ridge that runs through the eastern pacific ocean and separates the pacific plate from the north american.