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Chapter 2 – The Sea Floor

Chapter 2 – The Sea Floor. The World’s Oceans. Southern Ocean. Crust. Continental Drift. Alfred Wegener (1880-1930). Continental Drift. Matching Geologic Formations. Continental Drift. Matching Geologic Formations. Plate Tectonics. and Continental Drift. Mid-Ocean Ridges Worldwide.

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Chapter 2 – The Sea Floor

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  1. Chapter 2 – The Sea Floor

  2. The World’s Oceans

  3. Southern Ocean

  4. Crust

  5. Continental Drift

  6. Alfred Wegener (1880-1930)

  7. Continental Drift Matching Geologic Formations

  8. Continental Drift Matching Geologic Formations

  9. Plate Tectonics and Continental Drift

  10. Mid-Ocean Ridges Worldwide

  11. Mid-Atlantic Ridge

  12. Mid-Atlantic Ridge, Iceland

  13. Mid-Atlantic Ridge, Iceland

  14. Lithospheric Plates

  15. Plates in contact

  16. Volcanic and earthquake activity

  17. When Continents Collide China The Himalayan Mountains formed as the Indian plate collided with the Asian plate India

  18. San Andreas Fault

  19. Alfred Wegener (1880-1930)

  20. Continental Drift -- History

  21. Continental Drift -- History

  22. Continental Drift -- History

  23. Continental Drift -- History

  24. Continental Drift -- History

  25. Illustration from Wegener’s 1912 book proposing Continental Drift

  26. Ocean Sediments

  27. Sediment core samples from ocean floor

  28. Ocean Sediments Mineral (non-living sources) sediments Amazon River Mouth

  29. Ocean Sediments Biogenous (from living sources) sediments (ooze) Calcareous ooze

  30. Calcareous ooze components Foraminiferans

  31. Calcareous ooze components Coccolithophorids

  32. Silaceous ooze components Radiolarian tests

  33. Silaceous ooze components Diatom tests

  34. Microfossils – data on oceanic temperatures

  35. Ocean Sediments Fossil Foraminiferans

  36. Geologic Provinces of the Ocean

  37. Continental Shelf

  38. Submarine Canyon off Monterrey

  39. Geologic Provinces of the Ocean

  40. Shelf Break off New Jersey

  41. Geologic Provinces of the Ocean

  42. Continental Slope Oregon Coast (from the west – looking east)

  43. Geologic Provinces of the Ocean

  44. Geologic Provinces of the Ocean

  45. Geologic Provinces of the Ocean

  46. Abyssal Plain off New Jersey (4000-6000 m)

  47. Deep Ocean Basins

  48. Hot Spots and Island Formation

  49. Mid-ocean ridge

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