Dictionary of Human Evolution and Biology

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Continental Drift Theory

Proposal originally based upon similarity of coastline shapes of the circumAtlantic continents that land masses move independently over the earth’s surface. Proposed in 1912 by meteorologist Alfred Wegener, the theory was virtually proved in the 1960s when deep-sea cores from the drilling vessel Glomar Challenger showed that the floor of the Atlantic ocean is symmetrical in both composition and age on both sides of the mid-Atlantic ridge. The original concepts have been subsumed by plate tectonics. Aka Gondwanaland hypothesis, sea-floor spreading.

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