How far offshore is the edge of the north american continent

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Questions on Where Terranes Collide: The Geology of Western Canada

  1. How far offshore is the edge of the North American Continent? How fast does Chris Yorath say the Juan de Fuca Plate is converging with the North American Plate?
  2. Seventeen hundred million years ago a supercontinent hereabouts surrounding an inland sea consisted of parts of which three present continents?
  3. This landlocked sea collected eroding sediments from these continents. Over how long? And how thick was this sedimentary sequence of strata?
  4. These sedimentary rock layers in the mountains record what?
  5. Define "terrane" according to this film.
  6. The Wrangellia Terrane: what two major rock types compose this terrane, and where did they originate?
  7. The Intramontane Superterrane was formed from rocks originating in two distinct settings, and each setting produced two different rock types. What were these original geologic settings, and what were these rock types?
  8. what caused the formation of the mountains of Western Canada?
  9. How many terranes were amalgamated (joined together) into the Intramontane Superterrane?
  10. What is a melange rock, and where do they typically originate? Does Chris love these rocks?
  11. What happened to the rocks forming the edge of the continent as they collided with the continent
  12. When did the last Ice Age begin? What effect did this have on the rate of erosion?
  13. The Big Rock was finally deposited, with the retreat of the North American glaciation, along the boundary marking the meeting of which two ice sheets? (An example of foreshadowing!)
  14. Is the Cordillera still growing? Are the Forces of Tectonics still operating? Are collisions still occurring?
  15. What is the prediction made about the formation of the next Supercontinent?

Video: Where Terranes Collide: The Geology of Western Canada

Reference no: EM133363763

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