Geology Final Exam: Introduction to Plate Tectonics

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Canvas47
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253071
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Geology Final Exam: Introduction to Plate Tectonics
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2013-12-13 23:49:03
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Geology Exam Final Plate Tectonics
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Geology Final Exam for Plate Tectonics
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  1. Describe several pieces of evidence for Continental Drift.
    • Continents Fit
    • Rock Types and Geologic Structures match
    • Fossil Evidence
    • Paleoclimatic Evidence
    •      -Past glaciation
    •      -Past equitorial climates
  2. Who proposed the hypothesis of Continental Drift and why was it rejected?
    Alfred Wagner

    His hypothesis was rejected because he didn't have enough evidence to explain why continental drift happened. He was also a German scientist in the midst of WWII.
  3. What are the three major types of plate boundaries?
    • Divergent
    • Convergent(O/C, O/O, C/C)
    • Transform
  4. What is a real world example of a Divergent plate boundary?
    African & South American plate diverge to form the mid-Atlantic ridge.
  5. What are some real world examples of an OC Convergent plate boundary?
    Nazca plate subducts under South American plate to form Andies.

    Jaun de Fuca plate subducts under North American plate to form Cascades.
  6. What is a real world example of an O/O Convergent plate boundary?
    Pacific plate subducts under North American plate to form Aleutian Islands.
  7. What is a real world example of a C/C Convergent plate boundary?
    Eurasian Plate and the Indo-Australian Plate converge to form the Himalayas.
  8. What are the major features of a Divergent plate boundary?
    • Oceanic Lithosphere
    • Decompression Melting
    • Magma Rising
  9. What are the major features of an O/C Convergent plate boundary?
    Oceanic Lithosphere subducting under the Continental Lithosphere creates a Deep Ocean Trench and Acretionary Wedge. Partial Melting causes magma to rise to produce Continental Volcanic Arc.
  10. What are the major features of an O/O Convergent plate boundary?
    Oceanic Lithosphere subducting under an oceanic lithosphere creates a Deep Ocean Trench. Partial Melting cause magma to rise to produce a Volcanic Island Arc.
  11. What are the major features of a C/C Convergent plate boundary.
    Two Continental Lithospheres converge and Move Upward creating Compressional Mountains.
  12. What are hot-spots?
    Stationary masses of magma that exist deep in the mantle.
  13. What are some real world example of a hot spot?
    Hawaiian Islands, Iceland, Yellowstone
  14. What forces drive plate motions?
    Convection Currents - Unequal distribution of heat within the Earth's interior.

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