The Theory Of Seafloor Spreading Is Supported By

First proposed in the early 1960s by the american geologist harry h.

The theory of seafloor spreading is supported by.

Seafloor spreading and other tectonic activity processes are the result of mantle convection. In 1967 mckenzie and parker suggested the theory of plate tectonics. Convection current s carry heat from the lower mantle and core to the lithosphere. This evidence was from the investigations of the molten material seafloor drilling radiometric age dating and fossil ages and the magnetic stripes.

A veritable legion of evidence supports the seafloor spreading hypothesis. Since then it has been shown that the motion of the continents is linked to seafloor spreading by the theory of plate tectonics. The vine matthews morley hypothesis also known as the morley vine matthews hypothesis was the first key scientific test of the seafloor spreading theory of continental drift and plate tectonics. First proposed in the early 1960s by the american geologist harry h.

1 at or near the crest of the ridge the rocks are very young and they become. This process later called seafloor spreading operating over many millions of years has built the 50 000 km long system of mid ocean ridges. Hess its major tenets gave great support to the theory of continental drift continental drift. Studies conducted with thermal probes for example indicate that the heat flow through bottom sediments is generally comparable to that through the continents except over the mid ocean ridges where at some sites the heat flow measures three to four times the normal value.

Seafloor spreading theory of lithospheric evolution that holds that the ocean floors are spreading outward from vast underwater ridges. Hess its major tenets gave great support to the theory of continental drift continental drift. Its key impact was that it allowed the rates of plate motions at mid ocean ridges to be computed. Harry hess s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory.

This hypothesis was supported by several lines of evidence. Morgan later outlined the theory in 1968. This evidence however was also used to support the theory of continental drift. The driver for seafloor spreading in plates with active margins is the weight of the cool dense subducting slabs that pull them along or slab pull.

Mantle convection is the slow churn ing motion of earth s mantle. Plate tectonics it was from the continental drift theory convection current theory and the theory of seafloor spreading the theory of plate tectonics was formulated. Seafloor spreading theory of lithospheric evolution that holds that the ocean floors are spreading outward from vast underwater ridges.