Evidence That Support The Sea Floor Spreading Theory

The second piece of evidence in support of continental drift came during the late 1950s and early 60s from data on the bathymetry of the deep ocean floors and the nature of the oceanic crust such as magnetic properties and more generally with the development of marine geology which gave evidence for the association of seafloor spreading along.

Evidence that support the sea floor spreading theory. Harry hess s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory. Evidence from molten material. It was the greatest support of sea fall spreading. Samples of the deep ocean floor are evidence of seafloor spreading because the basaltic oceanic crust and overlapping sediment become younger.

Tuzo said that earth s crust or lithosphere was divided into large rigid pieces called plates. As upwelling of magma continues the plates continue to diverge a process known as seafloor spreading samples collected from the ocean floor show that the age of oceanic crust increases with distance from the spreading centre important evidence in favour of this process. Evidence of molten material in the year of 1960 scientists derived ocean floor in alvin. In 1965 a canadian geophysicist j.

Evidence of magnetic stripes magnetic poles have been reversed which is magical for the scientists. Evidence for sea floor spreading. This evidence was from the investigations of the molten material seafloor drilling radiometric age dating and fossil ages and the magnetic stripes. Rocks had shaped like toothpaste and squeezed pillows.

This evidence led scientists to look again at wegener s hypothesis of continental drift. 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. Convergence supports the theory of seafloor spreading. Evidence of sea floor spreading.

Strong evidence of seafloor spreading and plate tectonics. Evidence of seafloor spreading theory 1. Paleomagnetism led the revival of the continental drift hypothesis and its transformation into theories of sea floor spreading and plate tectonics. Eruptions of molten material magnetic stripes in the rock of the ocean floor and the ages of the rocks themselves.

These plates float atop an underlying rock layer called the asthenosphere. The regions that hold the unique record of earth s magnetic field lie along the mid ocean ridges where the sea floor is spreading. Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them.