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Abraham Ortelius
He is the first geographer to push forward the idea of continental drift. He got this idea from his map-making career. His theory wasn't accepted until Alfred Wegener expanded his theory with more evidence. -
Alfred Wegener
Alfred Wegener expanded Ortenius's theory with more evidence on continental drift. His evidence was Jig saw fit, Tectonic fit, Glacial deposits, and Fossil evidence. Although it was a lot of evidence, scientists were still skeptical because he had no evidence on how the continents moved. -
Arthur Holmes
He agreed with Wegener in the theory of Continental Drift in a time that it wasn't widely accepted, other scientists didnt believe in it because there was no evidence of how the continents move. Holmes proposed that earth's mantle has convection cells that give off radioactive heat which goes to the crust allowing the continents to move.Since he gave a explanation of how the continents moved, the Continental Drift theory was a bit more widely accepted. -
Lawrence Morley
He attempted to explain the continental drift theory with his own , he stated that new magma rises up at a mid-ocean ridge with iron in its composition and the magnetic element would hold the rocks in place. As the magnetic poles reverse, it changes the orientation making the movement. -
Harry Hess
In 1962 he published "The history of Ocean Basins" in which he gave a theory that could explain how the Continents actually moved. His theory is that oceans grew from their centres, with molten material oozing up from the Earth’s mantle along the mid ocean ridges. This created new seafloor which then spread away from the ridge in both directions. -
Drummond Hoyle Matthews and Fredrick .J Vine
In 1963 Drummond Matthews a professor at Cambridge University and his PhD student Fredrick Vine. They believed that the sea floor spreads from mid ocean ridges with a symmetrical pattern of magnetic reversals in the basalt rock. -
JOHN TUZO-WILSON
He had more evidence for the Continental Drift theory, he suggested that the idea of a third type of plate boundary - transform faults. Also known as a conservative plate boundaries, these faults slip horizontally, connecting oceanic ridges to ocean trenches. Transform faults allowed for plates to slide past each other without any oceanic crust being created or destroyed. -
Dan McKenzie
After he heard Fredrick Vine's theory of floor spreading he suggested with his own knowledge of thermodynamics there are two layers in the mantle, each of which are in motion, controlling the movement and behavior of the tectonic plates above. -
Abraham Ortelius
