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Continental Drift Theory No need to take notes I have taken them for you
Alfred was trying to get his girlfriend’s father to like him. Her father was a well-known geologist!!                                                        "Doesn't the east coast of South America fit exactly against the west coast of Africa, as if they had once been joined?" wrote Wegener to his future wife in December 1910. "This is an idea I'll have to pursue."
Alfred Wegener (Vegener) ,[object Object],[object Object],[object Object]
Wegener used 3 types of evidence to prove his theory! ,[object Object],[object Object],[object Object]
Evidence from landforms ,[object Object],[object Object]
The ‘jig-saw’ puzzle Evidence   from landforms
The ‘jig-saw’ puzzle Evidence from landforms
The ‘jig-saw’ puzzle Evidence from landforms
Evidence from Fossils ,[object Object],[object Object],Glossopteris : a fern found on the southern continents  Mesosaurus : a freshwater swimming reptile found in Africa and South America
fossil matches Evidence from Fossils
fossil matches Evidence from Fossils
Evidence from Climate ,[object Object],[object Object],[object Object]
Antarctic ice  Evidence from Climate
Ice could not have extended this far.  So...continents MUST have moved.. Evidence from Climate
Drift away Continental Drift Theory At first nobody believed Alfred Wegener’s theory….. WHY YOU ASK!
Scientists still do not appear to understand sufficiently that all earth sciences must contribute evidence toward unveiling the state of our planet in earlier times, and that the truth of the matter can only be reached by combing all this evidence. . . It is only by combing the information furnished by all the earth sciences that we can hope to determine 'truth' here, that is to say, to find the picture that sets out all the known facts in the best arrangement and that therefore has the highest degree of probability. Further, we have to be prepared always for the possibility that each new discovery, no matter what science furnishes it, may modify the conclusions we draw."  Alfred Wegener.  The Origins of Continents and Oceans  (4th edition)

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Continental Drift Theory

  • 1. Continental Drift Theory No need to take notes I have taken them for you
  • 2. Alfred was trying to get his girlfriend’s father to like him. Her father was a well-known geologist!!                                                       "Doesn't the east coast of South America fit exactly against the west coast of Africa, as if they had once been joined?" wrote Wegener to his future wife in December 1910. "This is an idea I'll have to pursue."
  • 3.
  • 4.
  • 5.
  • 6. The ‘jig-saw’ puzzle Evidence from landforms
  • 7. The ‘jig-saw’ puzzle Evidence from landforms
  • 8. The ‘jig-saw’ puzzle Evidence from landforms
  • 9.
  • 10. fossil matches Evidence from Fossils
  • 11. fossil matches Evidence from Fossils
  • 12.
  • 13. Antarctic ice Evidence from Climate
  • 14. Ice could not have extended this far. So...continents MUST have moved.. Evidence from Climate
  • 15. Drift away Continental Drift Theory At first nobody believed Alfred Wegener’s theory….. WHY YOU ASK!
  • 16. Scientists still do not appear to understand sufficiently that all earth sciences must contribute evidence toward unveiling the state of our planet in earlier times, and that the truth of the matter can only be reached by combing all this evidence. . . It is only by combing the information furnished by all the earth sciences that we can hope to determine 'truth' here, that is to say, to find the picture that sets out all the known facts in the best arrangement and that therefore has the highest degree of probability. Further, we have to be prepared always for the possibility that each new discovery, no matter what science furnishes it, may modify the conclusions we draw." Alfred Wegener. The Origins of Continents and Oceans (4th edition)