Sea Floor Spreading Evidence For Continental Drift

The matching of the distribution of similar fossils across oceans.

Sea floor spreading evidence for continental drift.

Sea floor spreading convection and seafloor spreading continental drift theory plate tectonics sea floor spreading origin of oceans and continents continental drift and seafloor spreading dive diser. By the 1960s the theories of continental drift and sea floor spreading were supported by reliable scientific data and combined to develop modern day plate tectonic theory. Tuzo wilson combined the continental drift and seafloor spreading hypotheses to propose the theory of plate tectonics. See also continental drift a veritable legion of evidence supports the seafloor spreading hypothesis.

This evidence was from the investigations of the molten material seafloor drilling radiometric age dating and fossil ages and the magnetic stripes. 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. In 1965 a canadian geophysicist j. In 1963 fred vine and d h.

How did seafloor spreading provide evidence for continental drift. Seafloor spreading evidence for continental drift. Tuzo said that earth s crust or lithosphere was divided into large rigid pieces called plates. By combining the sea floor spreading theory with continental drift and information on global seismicity the new theory of plate tectonics became a coherent theory to explain crustal movements.

This evidence however was also used to support the theory of continental drift. These plates float atop an underlying rock layer called the asthenosphere. Plates are composed of lithosphere about 100 km thick that float on the ductile asthenosphere. He suggested that continents moved around the earth like giant rafts.

Evidence of similar paleoclimates in belts across pangaean latitudes. The existence of mid ocean ridges where seafloor spreading starts b. Fellow scientists at the time thought the theory was ludicrous. The theory maintains that the crust and uppermost mantle or lithosphere is segmented into a number of solid rigid slabs called lithospheric plates.

Harry hess s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory. Plate tectonics theory convection currents and sea floor spreading. 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. Which of the following lines of evidence for continental drift plate tectonics was found after wegener published his theory.

Whats people lookup in this blog. Seafloor spreading disproves an early part of the theory of continental drift.