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Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics
Continental Drift & Plate Tectonics

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Editor's Notes

  1. Yet still it moves! (mu-ov-ay)
  2. Introductory textbook. Earth sciences are now like physics?
  3. Earth was more violent in the past
  4. Evidence for contraction? Cracking such as this in Iceland
  5. By 1904 ...
  6. Worked in Grand Canyon area
  7. Mesozoic: 251 - 65 mybp; problem to solve: similarity of S Am and African fauna / Cynognathus / Mesosaurus (FW not Marine) / Glossopteris
  8. Mesozoic: 251 - 65 mybp; problem to solve: similarity of S Am and African fauna / Cynognathus / Mesosaurus (FW not Marine) / Glossopteris
  9. Mesozoic: 251 - 65 mybp; problem to solve: similarity of S Am and African fauna / Cynognathus / Mesosaurus (FW not Marine) / Glossopteris
  10. Mesozoic: 251 - 65 mybp; problem to solve: similarity of S Am and African fauna / Cynognathus / Mesosaurus (FW not Marine) / Glossopteris
  11. Mesozoic: 251 - 65 mybp; problem to solve: similarity of S Am and African fauna / Cynognathus / Mesosaurus (FW not Marine) / Glossopteris
  12. Explained using land bridge / approx 1750 miles … and no trace of the landbridge /How did it sink if it was lighter? / Hidden continent?? / Also fauna of Antarctica, India & Australia!!!!
  13. Pioneered the use of weather balloons / Disappeared with a companion. Body found the next year.
  14. Work was a unification of geophysics, geology and geography / Translated in 1922
  15. Shared uplifts
  16. These are just the idea of isostacy.
  17. #3 had been held for a long time
  18. LHS noticed fit of continents / RHS had a theory of drift due to geological forces / Wegener only learned of these after his theory was in place.
  19. Also see this with present day earthworms
  20. Contiguous mountain ranges
  21. Paleoclimate only makes sense – evidence of glaciers
  22. But what was the mechanism?
  23. In short, drift was a likely but unproven hypothesis. Response in US was different - we’ll see why
  24. doo tooey
  25. Unconvincing - how not to write a scientific sentence
  26. Arthur Holmes
  27. No one paid any attention. / It wasn’t until the after WW2 that evidence began to accumulate.
  28. sonography and magnetometers were products of hunt for submarines! / seismographs were installed to monitor underground nuclear tests!
  29. It’s the plates that move, not the continents!
  30. a rift valley in iceland / the bridge (built in 2002) will actually be slowly ripped apart ~ 4cm per year
  31. divergent plate boundary: ridges leading to seafloor spreading convergent plate boundary: subduction @ trenches often with volcanic island arcs on landward side mountains forming (e.g. Rockies and Andes) where continent is riding over a subduction zone.
  32. Evidence for ... similarities of pattern and form
  33. Evidence for ... quantifiable geophysical evidence; A new kind of evidence that was dependent on Cold War technologies.
  34. over CD
  35. scientists and historians - effect of Kuhn???