lsu fall final 2013

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saiya9
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252914
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lsu fall final 2013
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2013-12-12 21:22:37
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LSU Geol 1001
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amy fall final exam 3 questions
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  1. Refer to this figure.
    This is a cross-sectional view of an outcrop. What is the correct geologic history?
    A. Deposition of sedimentary rocks followed by intrusion of dikes.
    B. Intrusion of dikes followed by deposition of the sedimentary rocks.
    C. Eruption of mudstone and sandstone, intrusion of rhyolite dike, eruption of shale and finally intrusion of basaltic dike.
    D. Deposition of mudstone and sandstone, intrusion of rhyolite dike, deposition of shale and intrusion of basalt dike.
    D. Deposition of mudstone and sandstone, intrusion of rhyolite dike, deposition of shale and intrusion of basalt dike.
    (this multiple choice question has been scrambled)


  2. This is a cross-sectional view of an outcrop.
    What is the name for the contact between the shale and sandstone?
    A. Depositional
    B. Angular unconformity
    C. Disconformity
    D. Nonconformity
    C. Disconformity
    (this multiple choice question has been scrambled)


  3. This is a cross-sectional view of an outcrop.
    What is the name for the contact between the mudstone and sandstone?
    A. Nonconformity
    B. Disconformity
    C. Depositional
    D. Angular unconformity
    C. Depositional
    (this multiple choice question has been scrambled)


  4. This is a cross-sectional view of an outcrop.
    What type of fault is this?
    A. Normal
    B. Reverse/Thrust
    C. Left-lateral strike-slip
    D. Right-lateral strike-slip
    A. Normal
    (this multiple choice question has been scrambled)

  5. This is a cross-sectional view of an outcrop.  Which is younger, the basalt layer or the
    fault?
    A. Basalt layer
    B. Fault
    A. Basalt layer


  6. This is a cross-sectional view of an outcrop. Which side of the fault is the hanging wall?
    A. Neither because it is a strike-slip fault
    B. Left side
    C. Right side
    B. Left side
    (this multiple choice question has been scrambled)
  7. A hot body of rock is more likely to exhibit ______ than a cold body of rock.
    A. Ductile behavior
    B. Brittle behavior
    A. Ductile behavior
  8. Earthquakes only occur  ________ the brittle/ductile transition.
    A. Above
    B. Below
    C. At or near
    A. Above
    (this multiple choice question has been scrambled)
  9. A body of rock affected by tensile stress will likely undergo__________.
    A. Stretching
    B. Shear strain
    C. Shortening
    A. Stretching
    (this multiple choice question has been scrambled)
  10. Change in shape, induced by stress, is termed ___________.
    A. Strain
    B. Plastic deformation
    C. Pressure release
    D. Metamorphosis
    A. Strain
    (this multiple choice question has been scrambled)
  11. Movement along faults often produces sharply angled rock fragments termed ____________.
    A. Slickensides
    B. Fault breccia
    C. Fault gouge
    D. Rock flour
    B. Fault breccia
    (this multiple choice question has been scrambled)


  12. What type of fold is shown in the figure?
    A. Syncline
    B. Anticline
    C. Basin
    D. Monocline
    B. Anticline
    (this multiple choice question has been scrambled)
  13. What do we call the point of maximum curvature of the fold (hint: where the limbs meet)?
    A. Axial plane
    B. Arms
    C. Hinge
    D. Fault gouge
    C. Hinge
    (this multiple choice question has been scrambled)

  14. What is a fold called if the axial plane is vertical (e.g. like the fold in this figure)?
    A. Upright
    B. Plunging
    C. Vertical
    D. Non-plunging
    E. Overturned
    A. Upright
    (this multiple choice question has been scrambled)
  15. What stress field will create a strike-slip fault?
    A. Shear
    B. Left-lateral
    C. Tensile
    D. Compressional
    A. Shear
    (this multiple choice question has been scrambled)
  16. True or false: Rifting can create mountain ranges.
    A. True
    B. False
    A. True
  17. True or false: The orogenic event that created the mountains in the western US is older than the orogenic event that created the mountains in the eastern US.
    A. True
    B. False
    B. False
  18. Which statement best defines the Principle of Uniformitarianism?
    A. Sediments originally accumulate in horizontal layers.
    B. Earth processes observed today also operated in the past at about the same rates.
    C. Layers lower in a stratigraphic column are older than those above.
    D. Sediments generally accumulate in continuous sheets across a region.
    E. If one geologic feature cuts across another, the feature that is cut is older.
    B. Earth processes observed today also operated in the past at about the same rates.
  19. Which statement best defines the Principle of Superposition?
    A. Sediments originally accumulate in horizontal layers.
    B. Earth processes observed today also operated in the past at about the same rates.
    C. Layers lower in a stratigraphic column are older than those above.
    D. Sediments generally accumulate in continuous sheets across a region.
    E. If one geologic feature cuts across another, the feature that is cut is older.
    C. Layers lower in a stratigraphic column are older than those above.
  20. What does an unconformity in a rock sequence indicate? 
    A. The rock layers must have been faulted in the past.
    B. It defines the age of the rock layers.
    C. It reveals the order in which the rocks were originally deposited.
    D. There is a time gap in the geologic record.
    D. There is a time gap in the geologic record.
    (this multiple choice question has been scrambled)
  21. Isotopic dating of sedimentary rocks gives _____________.
    A. A minimum age
    B. A maximum age
    C. An exact age
    D. A reset age
    B. A maximum age
    (this multiple choice question has been scrambled)
  22. What type of boundary creates an orogenic belt that has a fold-and-thrust belt?
    A. Collisional boundary
    B. Extensional boundary
    C. Transform boundary
    A. Collisional boundary
    (this multiple choice question has been scrambled)
  23. True or false: Continents are built by accretion of extinct arcs.
    A. True
    B. False
    B. False
  24. The contact between sedimentary rocks and metamorphic rocks is called:
    A. Conformity
    B. Nonconformity
    C. Angular unconformity
    B. Nonconformity
    (this multiple choice question has been scrambled)

  25. What is the oldest unit in this geologic cross section?
    A. Granite
    B. Basalt
    C. Limestone
    D. Marble
    E. Shale
    C. Limestone
    (this multiple choice question has been scrambled)


  26. Which is younger, the basalt dike or the fault?
    A. You cannot tell
    B. The fault
    C. The dike
    A. You cannot tell
    (this multiple choice question has been scrambled)

  27. If the limestone is 10 Ma and the dike is 8 Ma, how old is the shale?
    A. Between 10 and 8 Ma
    B. Older than 10 Ma
    C. Younger than 8 Ma
    A. Between 10 and 8 Ma
    (this multiple choice question has been scrambled)
  28. True or false: A half-life is the amount of time it takes for half the parent to decay to daughter.
    A. True
    B. False
    A. True
  29. If all of Earth history were compressed into a single year, Homo sapiens would first appear on ________.
    A. February 26
    B. April 15
    C. December 31, at 11:59 PM
    D. October 31
    C. December 31, at 11:59 PM
    (this multiple choice question has been scrambled)
  30. Which of the following is not a geologic deformation?
    A. Displacement
    B. Rotation
    C. Dissolution
    D. Strain
    C. Dissolution
    (this multiple choice question has been scrambled)
  31. Earth became internally differentiated, with a metallic core distinct from the rocky mantle, during the _________.
    A. Archean eon
    B. Hadean eon
    C. Proterozoic eon
    D. Paleozoic era
    B. Hadean eon
    (this multiple choice question has been scrambled)
  32. Banded-iron formations formed in the Proterozoic Eon because of the abundance of iron and _________.
    A. Nitrogen
    B. Carbon
    C. Oxygen
    D. Silica
    C. Oxygen
    (this multiple choice question has been scrambled)
  33. Oxygen in Earth’s atmosphere was probably derived from ________________.
    A.  Volcanic outgassing
    B.  Animal respiration
    C. Water from the oceans breaking down into hydrogen and oxygen during evaporation.
    D.  Photosynthesis
    D.  Photosynthesis
    (this multiple choice question has been scrambled)
  34. Where are cratons found on a continent?
    A. Interior
    B. In between the edges and interior
    C. Edges
    A. Interior
    (this multiple choice question has been scrambled)
  35. Rodinia and Pangaea
    are supercontinents that assembled during the _______ and __________,
    respectively.
    A. Archean Proterozoic
    B. Paleozoic; Mesozoic
    C. Hadean; Archean
    D. Proterozoic; Paleozoic
    D. Proterozoic; Paleozoic
    (this multiple choice question has been scrambled)
  36. The eon represented by abundant deposits of strata with shelly fossils is the ____________.
    A. Phanerozoic
    B. Hadean
    C. Proterozoic
    D. Archean
    A. Phanerozoic
    (this multiple choice question has been scrambled)
  37. Dinosaurs first appeared during the ____________ Period.
    A. Cambrian
    B. Devonian
    C. Permian
    D. Triassic
    D. Triassic
    (this multiple choice question has been scrambled)
  38. A fold-thrust belt is _________.
    A. A low-lying region where Hadean and Archean rocks are covered by Phanerozoic sedimentary strata
    B. Synonymous with “shield”
    C. A low-lying region where Precambrian rocks crop out
    D. A region of compressed rock located near a convergent continental margin.
    D. A region of compressed rock located near a convergent continental margin.
    (this multiple choice question has been scrambled)
  39. The Himalayas and Tibetan Plateau were produced by the collision of __________with southern Asia during the Cenozoic.
    A. Australia
    B. Africa
    C. India
    D. Europe
    C. India
    (this multiple choice question has been scrambled)
  40. The Cretaceous-Tertiary (K-T) boundary event took place how many millions of years ago?
    A. 540
    B. 245
    C. 65
    D. 25
    C. 65
    (this multiple choice question has been scrambled)
  41. Two atoms of a single element that differ in number of neutrons are said to represent two distinct ________ of that element.
    A. Isotopes
    B. Isotherms
    C. Atomic species
    D. Isomers
    A. Isotopes
    (this multiple choice question has been scrambled)
  42. Which proportion of a radioactive isotope is expected to remain in an unaltered (unreacted) state after the passage of 3 half-lives?
    A. One-eighth
    B. One-sixth
    C. Three-halves
    D. One-third
    A. One-eighth
    (this multiple choice question has been scrambled)
  43. Numerical ages for boundaries between time units on the geologic time scale primarily result from the study of __________, in conjunction with relative age data.
    A. Fossil content and spatial relationships among sedimentary rocks
    B. Radiometric dating of sedimentary rocks
    C. Fossil content and spatial relationships among igneous rocks
    D. Radiometric dating of igneous rocks
    D. Radiometric dating of igneous rocks
    (this multiple choice question has been scrambled)
  44. Why do mountains occur in distinctive belts?
    A. The processes that create mountains are linear
    B. Plates move linearly over hot spots
    C. Continents are linear features
    D. None of the above
    C. Continents are linear features
    (this multiple choice question has been scrambled)
  45. Which type of fault slopes less than 35 degrees from horizontal and the hanging-wall block moves up relative to the footwall block?
    A. Normal
    B. Detachment
    C. Reverse
    D. Strike-slip
    E. Thrust
    E. Thrust
    (this multiple choice question has been scrambled)
  46. If the lithology and fossil content of two bodies of rock on opposite sides of a canyon are identical, we assume these remaining outcrops were likely connected at one time. This idea summarizes the principle of __________.
    A. Superposition
    B. Lateral continuity
    C. Uniformitarianism
    D. Original horizontality
    B. Lateral continuity
    (this multiple choice question has been scrambled)

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