The Theory Of Seafloor Spreading Is Supported By

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.

The theory of seafloor spreading is supported by.

This process later called seafloor spreading operating over many millions of years has built the 50 000 km long system of mid ocean ridges. 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. Convection currents also recycle lithospheric materials back to the mantle. Harry hess s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory.

Theory of plate tectonics when the concept of seafloor spreading came along scientists recognized that it was the mechanism to explain how continents could move around earth s surface. This hypothesis was supported by several lines of evidence. Seafloor spreading theory of lithospheric evolution that holds that the ocean floors are spreading outward from vast underwater ridges. Seafloor spreading and other tectonic activity processes are the result of mantle convection.

This evidence was from the investigations of the molten material seafloor drilling radiometric age dating and fossil ages and the magnetic stripes. Convection current s carry heat from the lower mantle and core to the lithosphere. Hess its major tenets gave great support to the theory of continental drift continental drift. This evidence however was also used to support the theory of continental drift.

A veritable legion of evidence supports the seafloor spreading hypothesis. 1 at or near the crest of the ridge the rocks are very young and they become. Morgan later outlined the theory in 1968. Mantle convection is the slow churn ing motion of earth s mantle.

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. In 1967 mckenzie and parker suggested the theory of plate tectonics. Like the scientists before us we will now merge the ideas of continental drift and seafloor spreading into the theory of plate tectonics.

First proposed in the early 1960s by the american geologist harry h. Seafloor spreading theory of lithospheric evolution that holds that the ocean floors are spreading outward from vast underwater ridges. First proposed in the early 1960s by the american geologist harry h.