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2.3 Continental Drifting

2.3 Continental Drifting. Alfred Wegener. He saw that the continents looked like giant puzzle pieces, that seemed to all “fit” together. He hypothesized that all of the continents were once together in a giant land mass called PANGEA. Wegener’s Hypothesis. Some evidence:. Land Features

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2.3 Continental Drifting

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  1. 2.3 Continental Drifting

  2. Alfred Wegener • He saw that the continents looked like giant puzzle pieces, that seemed to all “fit” together. • He hypothesized that all of the continents were once together in a giant land mass called PANGEA.

  3. Wegener’s Hypothesis

  4. Some evidence: • Land Features • Evidence from Fossils. • Climate Change

  5. Land Features • Coal Beds • Mountains

  6. Fossils: • 3 main fossil bands that supported Wegener’s hypothesis. • Glossopteris fern. • Mesosaurus • Lystrosaurus.

  7. Climate Change • Wegener found rocks with glacial scraping in places that are too mild to have glaciers any more.

  8. Why was Wegener initially not supported? • He had no second sentence yet in his hypothesis! • It was much later when Harry Hess created his theory of Sea Floor Spreading that Wegener’s theory was accepted in the 1960’s!

  9. Maps of Wegners Evidence

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