Theory Of Sea Floor Spreading Was Proposed By

The seafloor spreading hypothesis was proposed by the american geophysicist harry h.

Theory of sea floor spreading was proposed by.

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. On the basis of tharp s efforts and other new discoveries about the deep ocean floor hess postulated that molten material from earth s mantle continuously wells up along the crests of the mid ocean ridges that wind for nearly 80 000 km. Hess proposed the idea that are places where. Seafloor spreading was proposed by an american geophysicist harry h.

Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor. First proposed in the early 1960s by the american geologist harry h. What evidence supports hess s theory of seafloor spreading. Seafloor spreading theory of lithospheric evolution that holds that the ocean floors are spreading outward from vast underwater ridges.

The motivating force for seafloor spreading ridges is tectonic plate slab pull at subduction zones rather than magma pressure although there is typically. Evidence that led to the development of plate tectonic theory in the 1960s came primarily from new data from the sea floor including topography and the magnetism of rocks. When oceanic plates diverge tensional stress causes fractures to occur in the lithosphere. 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 was proposed as a mechanism to drive the movement of the continents on the basis of symmetrical patterns of reversed and normal magnetic rocks on the sea. 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. First proposed in the early 1960s by the american geologist harry h. 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.

Seafloor spreading helps to explain continental drift in the theory of plate tectonics. Check all that apply. In 1912 when alfred wegener proposed that the continents had once been joined together and had split apart the biggest weakness in his hypothesis was the.