Dea Floor Spreading

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.

Dea floor spreading. Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor. The formation of the new crust is due to the rising of the molten material magma from the mantle by convection current. The process of sea floor spreading. Hess its major tenets gave great support to the theory of continental drift continental drift geological theory that the relative positions of the continents on the earth s surface have.

The mid ocean ridge is the region where new oceanic crust is created. 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 theory of lithospheric evolution that holds that the ocean floors are spreading outward from vast underwater ridges. 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.

Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them. First proposed in the early 1960s by the american geologist harry h.