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Geologic History

Geologic History. CGC1D Feb. 19, 2014. Big Questions for Today… . How was the Earth formed? What causes disasters such as earthquakes and volcanoes? Why doesn’t the Earth just erode away?. Geologic History. The Earth has been around for over 4.5 BILLION years! Geologic Eras SONG

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Geologic History

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  1. Geologic History CGC1D Feb. 19, 2014

  2. Big Questions for Today… • How was the Earth formed? • What causes disasters such as earthquakes and volcanoes? • Why doesn’t the Earth just erode away?

  3. Geologic History • The Earth has been around for over 4.5 BILLION years! • Geologic Eras SONG • If you think about Earth’s history thus far as ONE calendar year, the dinosaurs went extinct on Christmas Eve, and humans started roaming the earth at 8:30 P.M. on New Year’s Eve.

  4. Geologic History • Precambrian Era: 570-1500 million years ago! • Now: The Canadian Shield Vulcanism Fault Ancient Sea Igneous Rock

  5. Geologic History • Paleozoic Era: 245-570 million years ago • Now: rounded mountains and hills Erosion Erosion Sediments Sediments Igneous Rock

  6. Geologic History • Mesozoic Era: 66-245 million years ago • Now: high jagged mountains Erosion Sediments Sediments Igneous Rock Mountains Forming

  7. Geologic History • Cenozoic Era- 66 million years ago until now Sedimentary Mountains Eroding Mountains Forming Sedimentary Plains APPALACHIAN MOUNTAINS PACIFIC OCEAN ROCKY MOUNTAINS Igneous Rock ATLANTIC OCEAN INTERIOR PLAINS CANADIAN SHIELD

  8. Plate Tectonics - Continental Drift

  9. Plate Tectonics - Continental Drift

  10. Plate Tectonics - Continental Drift THE CONTINENTS TODAY Antarctica

  11. Plate Tectonics - Continental Drift PROOF!

  12. Plate Tectonics Videos • http://www.youtube.com/watch?v=1-HwPR_4mP4 • http://www.youtube.com/watch?v=ryrXAGY1dmE

  13. Plate Tectonics Map

  14. Plate Boundaries

  15. Plate Tectonics Separating (Divergent Boundary)

  16. Plate Tectonics Separating (Divergent Boundary)

  17. Plate Tectonics Colliding (Convergent Boundary)

  18. Plate Tectonics Sliding (Transform Boundary)

  19. Plate Tectonics Sliding (Transform Boundary)

  20. RICHTER SCALE • Less than 3.5 Generally not felt, but recorded. • 3.5-5.4 Often felt, but rarely causes damage. • Under 6.0 At most slight damage to well-designed buildings. • 6.1-6.9 Can be destructive in areas up to about 100 kilometers across. • 7.0-7.9 Major earthquake. Can cause serious damage over larger areas. • 8 or greater Great earthquake. Can cause serious damage in areas several hundred kilometers across.

  21. Earthquake causes Japanese Tsunami`

  22. Tomorrow… Landform regions of Canada

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