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Abraham Ortelius
Abraham proposed that continents "drift" and suggested that all the continents in the planet came together. The evidence that he found was that the Americas, Eurasia and Africa fit together like a jig-saw puzzle. -
Alfred Wegener
Proposed that all the continents in the world all came together and formed a super continent called Pangaea. Evidence included that the fossils of the same organism could be found on different continents and the mountains on the east coast of the United States and Europe look like the same mountain range. -
Arthur Holmes
Holmes roposed hat the Earth's mantle contained convection cells that dissipated radioactive heat and moved the crust at the surface. His evidence was that when the mantle was heated by radioactivity, the continents would move. Scientists did not take this idea seriously, but later gained support. -
Harry Hess
He proposed that the seafloor itself moves, and carried the continents with it as it expands from a central axis. He found evidence using a WW2 warship's sound gear that there were trenches and canyons on the ocean floor. Although his theory made sense, Hess knew that he needed more evidence to support his it for other scientists to agree. -
Samuel Warren Carey
Came up with the conclusion that the Earth expanded. His evidence was that he made maps showing how the Earth once looked with deep, oceanic ridges. His theory was not supported by scientists but later gained support. -
Fredrick J. Vine
Vine and his friend Matthews both put forth that the seafloor was spreading and evidence proved that there was a symmetrical pattern of magnetic stripes on either side of the mid-ocean ridge. Scientists were skeptical because of the assumptions made. -
Drummond Hoyle Matthews
Vine and his friend Matthews both put forth that the seafloor was spreading and evidence proved that there was a symmetrical pattern of magnetic stripes on either side of the mid-ocean ridge. Scientists were skeptical because of the assumptions made. -
Lawrence Morley
He found out that the rocks on the ocean floor had a record of the direction of the planet's magnetic field. He made some research on this found igneous rock that had those patterns and similarities. Scientists accepted Morley's theory and evidence.
