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Plate Tectonics

Plate Tectonics. Who thought of that?!. The first time someone noticed the similar coastlines was in the late 1500s Cartographers Alfred Wegener was the first with the idea of moving continents Provided the basis for Plate Tectonics . Wegener. Developed the idea of continental drift

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Plate Tectonics

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  1. Plate Tectonics

  2. Who thought of that?! • The first time someone noticed the similar coastlines was in the late 1500s • Cartographers • Alfred Wegener was the first with the idea of moving continents • Provided the basis for Plate Tectonics

  3. Wegener • Developed the idea of continental drift • First to use evidence • Rock formations • Fossils • climate

  4. No Way! • Wegener’s ideas were not accepted until after he died • Why? • No “good” mechanism

  5. Evidences • Fossils • Mesosaurus • Reptile that lived 270mya • Found in parts of South America and Africa

  6. Evidences • Landforms • Mountain chains are similar • Mid-Atlantic ridge • Glacial evidence • Appalachian mountain rock layers identical to those in Greenland and Europe

  7. Evidences • Environmental • Coal deposits mean tropical climate • PA used to be a swamp PA

  8. Continents on the Move

  9. Drifting Apart

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