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Continental Drift and Plate Tectonics

Continental Drift and Plate Tectonics. The Permian Ice Age Problem. Wegener’s Theory. Confirmation of Continental Drift. World War II technology International Geophysical Year (IGY) 1957-58 Worldwide Standardized Seismic Network 1963-. The Geomagnetic Reversal Time Scale.

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Continental Drift and Plate Tectonics

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  1. Continental Drift and Plate Tectonics

  2. The Permian Ice Age Problem

  3. Wegener’s Theory

  4. Confirmation of Continental Drift • World War II technology • International Geophysical Year (IGY) 1957-58 • Worldwide Standardized Seismic Network 1963-

  5. The Geomagnetic Reversal Time Scale

  6. Discovery of Sea-Floor Spreading

  7. Sea-Floor Spreading

  8. Where Does Ocean Crust Go? Hugo Benioff, 1954

  9. Benioff’s Interpretation Updated

  10. Worldwide Standardized Seismic Network

  11. The Plate Tectonics Model

  12. The Plate Tectonics Model

  13. The Earth’s Plates

  14. Global Plate Motions

  15. What Drives It: Convection

  16. How Plates Move

  17. Reconstructing Plate Movements

  18. Fit of Continents Across the Atlantic

  19. Present Day Atlantic

  20. Atlantic 65 m.y. ago

  21. A Subduction Zone

  22. Paleomagnetism

  23. Why Mountains are High

  24. Where the Plates Meet

  25. Terrane Accretion

  26. Terranes in Western North America

  27. Hot Spots

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