Seafloor Spreading Theory Byju S

3 questions raised after sea floor mapping 4.

Seafloor spreading theory byju s.

Seafloor spreading was proposed by an american geophysicist harry 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. In 1963 fred vine and d h. These cornerstones are convectional current theory and paleomagnetism.

Beginning of sea floor spreading theory 2. Arthur holmes in 1930s discussed the possibility of convection currents. Mapping of sea floor in 1950s 3. To understand the concept of seafloor spreading we must first understand some basic concepts that form the cornerstones for the concept of seafloor spreading.

It leads to the formation of new material on the ridge. 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. 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. Convection current theory convection current theory is the soul of seafloor spreading theory.