Geology Unit 2 Part 1

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  1. Remember about the frist 3 questions involving paragrapsh and drawings
    • 1.) Did you turn in you team written paragraphs about hypoxia?
    • 2.)Did you complete the drawings fro the continental shelf?
    • 3.) did you turn in the Unit 2 Video Web Hit paragraph?
  2. Did you remember to write your hypoxia paper?
  3. Which two energy sources are principaly driving the hydrologic system?
    the major energy process that drives changes in all these spheres is heat- either from the Sun or radioactive heat from the Earth's interior. Gravity is the secondary energy force.
  4. How is a non-absolute geologic time scale measured?
    It's based on life forms (biota) and not a calender!
  5. how is absolute geologic time scale measured?
    By documents or calenders showing the exact years. Or by radiometric age dating to assign absolute years to all subdivisions in a non-absolute geologic time scale.
  6. What are the key premises for the doctrine of Uniformitarianism?
    A theory that present day geologic processes can be used for interpreting the past geologic processes and might be use to prediciting future geologic events.
  7. What are the key premises for the doctrine of catastrophism?
    States that all rocks and fossils were created in six days; then 6,000 years ago, a catastrophic event destroyed all fossil life and created the rock layers we see today.
  8. What is the name of the 250 million year old ocean basin found in West Texas?
    The Permian Basin.
  9. Why are ancient and present-day ocean basins economically important today? 
    All major oil and gas deposits are associated with large basins, and it is also true for the Permian Basin.
  10. Whic important education fund receives money from Texas Permian Basin oil and gas royalty payments?
    Texas Permanent University Fund, which supplies about $575 milion for the UT and TAMU college systems (2/3 for UT; 1/3 for A&M).
  11. Where could we find a nearby, modern day example of the ancient Texas Permian Basin?
    The Bahama Islands area off the coast of Florida and Cuba
  12. How do we know the ancient shallow seas and islands that covered the San Antonio-Dallas area?
    Shallow water sea fossils and dinosaur footprints are found in limestone rocks throughout this area.
  13. What is the name of the meteorite that ended the reign of the dinosaurs?
  14. Where is the dinosaur-killing meteor crater located?
    Located within the Yucatan Peninsula of Mexico, less than 600 miles from Texas.
  15. Can you physically touch the walls of the crater? If not, why not?
    No, because the crater was buried by more than 3,000 feet of rock.
  16. Draw and label all components of a continental margin.
    Image Upload 1
  17. Located where the gas hydrate is on the continental margin.
    On continental slope and continental rise.
  18. What is the general length and width (miles) of the GOM (Gulf of Mexico).
    The GOM basin extends 500 miles wide by 1,000 miles long. 38% of the seawater is less than 60 feet deep and about 20% is deeper than 9,000.
  19. What is the greatest depth of the GOM?
    The deepest part of the GOM is off the Texas coast at 14,300 feet deep and is called the "Sigsbee Deep" (with burried salt domes).
  20. What happens to deeply buried salt (over time), that causes this deep salt to rise?
    Deeply buried salt becomes hot and less dense and will rise toward the surface as a ridge or dome of pure salt. 
  21. What valuable minerals have been found around salt domes?
Card Set:
Geology Unit 2 Part 1
2013-02-08 17:04:37
Geology Gulf Mexico oceanic crust continental

Possible questions onf exam regarding Unit 2.
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