Sea Floor Spreading Evidence For Continental Drift

This evidence however was also used to support the theory of continental drift.

Sea floor spreading evidence for continental drift.

Fellow scientists at the time thought the theory was ludicrous. How did seafloor spreading provide evidence for continental drift. Seafloor spreading disproves an early part of the theory of continental drift. Tuzo wilson combined the continental drift and seafloor spreading hypotheses to propose the theory of plate tectonics.

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. 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. The existence of mid ocean ridges where seafloor spreading starts b. Which of the following lines of evidence for continental drift plate tectonics was found after wegener published his theory.

Seafloor spreading proves that the ocean itself is a site of tectonic activity. 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. Alfred wegener a german meteorologist born in 1880 developed the idea of continental drift.

He suggested that continents moved around the earth like giant rafts. This evidence was from the investigations of the molten material seafloor drilling radiometric age dating and fossil ages and the magnetic stripes. In 1965 a canadian geophysicist j. Tuzo said that earth s crust or lithosphere was divided into large rigid pieces called plates.

See also continental drift a veritable legion of evidence supports the seafloor spreading hypothesis. The theory maintains that the crust and uppermost mantle or lithosphere is segmented into a number of solid rigid slabs called lithospheric plates. Evidence of similar paleoclimates in belts across pangaean latitudes. Plates are composed of lithosphere about 100 km thick that float on the ductile asthenosphere.

Whats people lookup in this blog. 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. These plates float atop an underlying rock layer called the asthenosphere. The matching of the distribution of similar fossils across oceans.

In 1963 fred vine and d h. Seafloor spreading evidence for continental drift.