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OUTLINE

OUTLINE. Introduction Precambrian Earth History The Paleozoic Geography of Earth Paleozoic Evolution of North America The History of Paleozoic Mobile Belts The Role of Microplates The Breakup of Pangaea The Mesozoic History of North America GEO-FOCUS 18.1: Petrified Forest National Park

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OUTLINE

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  1. OUTLINE • Introduction • Precambrian Earth History • The Paleozoic Geography of Earth • Paleozoic Evolution of North America • The History of Paleozoic Mobile Belts • The Role of Microplates • The Breakup of Pangaea • The Mesozoic History of North America • GEO-FOCUS 18.1:Petrified Forest National Park • Cenozoic Earth History • Geo-Recap

  2. OBJECTIVES 1 The Precambrian encompasses more than 88% of all geologic time, yet we know less about this episode in Earth history than we do about the other eras. 2 At the beginning of the Paleozoic, six major continents were present, and they assembled into the supercontinent Pangaea by the end of the Paleozoic. 3 The breakup of Pangaea took place in four general stages, beginning during the Triassic. 4 The geologic record of the Cenozoic is more thoroughly understood than the records of earlier eras. 5 An episode of widespread glaciation took place during the Pleistocene Epoch.

  3. Fig. 18-CO, p. 416

  4. Fig. 18-1, p. 418

  5. Fig. 18-2, p. 419

  6. Fig. 18-2a, p. 419

  7. Fig. 18-2b, p. 419

  8. Fig. 18-2c, p. 419

  9. Fig. 18-3, p. 420

  10. Fig. 18-4, p. 421

  11. Fig. 18-4a, p. 421

  12. Fig. 18-4b, p. 421

  13. Fig. 18-4c, p. 421

  14. Fig. 18-5, p. 422

  15. Fig. 18-5a, p. 422

  16. Fig. 18-5b, p. 422

  17. Fig. 18-5c, p. 422

  18. Fig. 18-6a, p. 423

  19. Fig. 18-6b, p. 423

  20. Fig. 18-6c, p. 423

  21. Fig. 18-6d, p. 423

  22. Fig. 18-7, p. 424

  23. Fig. 18-7a, p. 424

  24. Fig. 18-7b, p. 424

  25. Fig. 18-7c, p. 424

  26. Fig. 18-8a, p. 426

  27. Fig. 18-8b, p. 426

  28. Fig. 18-9a, p. 427

  29. Fig. 18-9b, p. 427

  30. Fig. 18-10, p. 429

  31. Fig. 18-11, p. 429

  32. Fig. 18-12a, p. 431

  33. Fig. 18-12b, p. 431

  34. Fig. 18-12c, p. 431

  35. Fig. 18-13, p. 432

  36. Fig. 18-14a, p. 433

  37. Fig. 18-14b, p. 433

  38. Fig. 18-15a, p. 434

  39. Fig. 18-15b, p. 434

  40. Fig. 18-15c, p. 434

  41. Fig. 18-16a, p. 436

  42. Fig. 18-16b, p. 436

  43. Fig. 18-16c, p. 437

  44. Fig. 18-17, p. 438

  45. Fig. 18-18, p. 439

  46. Fig. 18-19, p. 440

  47. Fig. 18-20a, p. 441

  48. Fig. 18-20bc, p. 441

  49. Figure 1a, p. 442

  50. Figure 1b, p. 442

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