Seafloor Spreading Theory Byju S

To understand the concept of seafloor spreading we must first understand some basic concepts that form the cornerstones for the concept of seafloor spreading.

Seafloor spreading theory byju s.

Seafloor spreading theory that oceanic crust forms along submarine mountain zones known collectively as the mid ocean ridge system and spreads out laterally away from them. Seafloor spreading was proposed by an american geophysicist harry h. In 1963 fred vine and d h. The theory of seafloor spreading the mid ocean ridge is where the seafloor spreading occurs in which tectonic plates large slabs of earth s lithosphere split apart from each other.

These cornerstones are convectional current theory and paleomagnetism. Mapping of sea floor in 1950s 3. As per seafloor spreading theory the mid oceanic ridge is the region where at the crest of oceanic ridges through the rupture of the oceanic crust and the crack continuous new lava eruption thrusts into it consequently pushing the oceanic crust on either side. Convection current theory convection current theory is the soul of seafloor spreading theory.

Beginning of sea floor spreading theory 2. It leads to the formation of new material on the ridge. Sea floor spreading theory. Matthews used paleomagnetism to test the theory of seafloor spreading by studying paleomagnetic data from a portion of the midocean ridge system if the seafloor has spread laterally by the addition of new crust at the oceanic ridges there should be a relatively symmetrical pattern of magnetic orientation normal polarity reversed polarity normal polarity and.