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Continental Drift Theory (Abraham Ortelius)
He said that America was torn away from Europe and Africa because of earthquakes and floods. -
Continental Drift
In 1915, Alfred Wegener came out with the Continental Drift theory. It stated that the continents formed a super continent called Pangaea, then the continents drifted apart. -
Continental Drift Theory (Alfred Wegener)
In 1915, Alfred Wegener said that the Continental Drift occurred and it made the continents that formed Pangaea split up. -
Arthur Holmes Theory
He said that Earth's mantle had convection cells that eliminated radioactive heat. He proved it by showing that mid ocean ridges were hotter than other areas. -
Henry Hess
Henry Hess discovered that there were mountains, ridges, and canyons in the ocean during World War 2 -
Drummond Hoyle Matthews Theory
He said that plate tectonics caused the seafloor to spread. This was caused by the magnetic strips in the ocean ridge. -
Lawrence Morley
He said that the ocean had a magnetic pattern of igneous rocks that made lava come out. The lava had iron in it and it was located in a mid ocean ridge which proved his theory. -
Frederick J. Vine
He said if ocean ridges were the site of seafloor creation and if the magnetic field of Earth reversed, lava would produce rock magnetized to the magnetic field of Earth. He proved it by showing that the sides of the ridges on the ocean floor had magnetic strips
