Geol Test Three

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Author:
cait.smith96
ID:
15919
Filename:
Geol Test Three
Updated:
2010-04-24 00:32:44
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geology dehon
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Answers to Third Exam
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  1. Rocks near the surface deform mostly as brittle. T or F
    True
  2. Beds always dip in the direction of younger beds. T or F
    True
  3. Faults are clearly an example of brittle strain. T or F
    True
  4. Folds and thrust faults are caused by tension in the earths crust. T or F
    False
  5. Most sedimentary rocks were originally deposited as flat-lying beds. T or F
    True
  6. The difference in the arrival time of the P and S wave is related to-
    A. the distance to the earthquake from the seismic station
    B. the density of the rocks through which the waves travel
    C. the magnitude of the earthquake
    D. the intensity of the earthquake
    A. the distance to the earthquake from the seismic station
    (this multiple choice question has been scrambled)
  7. Which one of the following is consistent with deformation by folding?
    A. the crust is thinned
    B. the crust is stretched
    C. the crust is shortened perpendicular to the fold axis
    D. folding is accompanied by normal faulting
    C. the crust is shortened perpendicular to the fold axis
    (this multiple choice question has been scrambled)
  8. A ___ is a prominent ridge formed by different erosion of a resistant layer of dopping strata.
    A. horst
    B. hogback
    C. wadi
    D. mesa
    B. hogback
    (this multiple choice question has been scrambled)
  9. A ____ is a flat topped hill that is usually an indication of flat lying strata.
    A. cuesta
    B. horst
    C. wadi
    D. mesa
    D. mesa
    (this multiple choice question has been scrambled)
  10. A sea large wave created by an earthquake is properly called a -
    A. rouge wave
    B. tsunami
    C. tidal surge
    D. tidal bore
    B. tsunami
    (this multiple choice question has been scrambled)
  11. If a deformed body recovers its original shape as stress is released, it is said to be -
    A. brittle
    B. fluid
    C. elastic
    D. plastic
    C. elastic
    (this multiple choice question has been scrambled)
  12. Which of the hollowing would NOT be characteristic of an anticline:
    A. oldest beds in the center
    B. plastic strain response
    C. beds dip away from the axial plane
    D. an upward arch
    E. horizontal limbs
    E. horizontal limbs
    (this multiple choice question has been scrambled)
  13. A structural basin is simply a circular:
    A. syncline
    B. normal fault
    C. dome
    D. anticline
    A. syncline
    (this multiple choice question has been scrambled)
  14. The block of material overlying an inclined fault plane is the:
    A. hanging wall
    B. foot wall
    C. isoclinal wall
    D. plunging
    A. hanging wall
    (this multiple choice question has been scrambled)
  15. If the hanging wall has moved down, the fault is -
    A. normal
    B. thrust
    C. strike-slip
    D. reverse
    A. normal
    (this multiple choice question has been scrambled)
  16. A bed that dips due east, must strike:
    A. north-south
    B. North 45 degrees West
    C. due west
    D. North 45 degrees East
    E. dip to the east is unrelated to strike
    A. north-south
    (this multiple choice question has been scrambled)
  17. If the surface exposures (map view) of folded beds resemble Avas or horseshoes, then the folds must be:
    A. plunging
    B. recumbent
    C. overturned
    D. isoclinal
    A. plunging
    (this multiple choice question has been scrambled)
  18. The San Andreas Fault system can be described as -
    A. normal dip-slip
    B. strike-slip
    C. thrust dip-slip
    D. reverse oblique-slip
    E. left lateral
    B. strike-slip
    (this multiple choice question has been scrambled)
  19. Geologic structures (faults and folds) are important in oil and gas exploration because -
    A. all geologic structures contain oil and gas deposits
    B. structures can trap oil and gas
    C. structures are caused by oil and gas generation
    D. structures only form where there is oil and gas
    B. structures can trap oil and gas
    (this multiple choice question has been scrambled)
  20. A ___ is a fracture in bedrock along with movement has taken place
    A. fault
    B. strike
    C. plane
    D. joint
    A. fault
    (this multiple choice question has been scrambled)
  21. In an overturned fold, the limbs dip -
    A. perpendicular to each other
    B. at an obtuse angle to each other
    C. in the opposite direction
    D. in the same direction
    D. in the same direction
    (this multiple choice question has been scrambled)
  22. If the fault dips toward the up-thrown block, the fault is-
    A. normal
    B. strike-slip
    C. thrust
    D. reverse
    D. reverse
    (this multiple choice question has been scrambled)
  23. If a sequence of beds gets younger toward the east, then they must be dipping to the-
    A. west
    B. south
    C. no dip
    D. north
    E. east
    E. east
    (this multiple choice question has been scrambled)
  24. We know what the mantle is made of because-
    A. we have obtained samples from drill holes
    B. seismic waves are able to determine mineral composition of rocks traversed
    C. because the surface of the moon is made up of mantle material
    D. samples of the shallow mantle are brought up in some volcanoes
    D. samples of the shallow mantle are brought up in some volcanoes
    (this multiple choice question has been scrambled)
  25. Show me the Rift Valley of East Africa, and I'll show you a-
    A. back arc spreading center
    B. converging plate boundary
    C. transform plate boundary
    D. diverging plate boundary
    D. diverging plate boundary
    (this multiple choice question has been scrambled)
  26. The Himalayan Mountains formed by-
    A. ocean-ocean convergence
    B. continent-continent convergence
    C. spreading center
    D. continent-ocean convergence
    B. continent-continent convergence
    (this multiple choice question has been scrambled)
  27. The Red Sea is interpreted as-
    A. a flooded rift valley
    B. a convergent plate boundary
    C. a newly developed trench system
    D. a transform margin
    A. a flooded rift valley
    (this multiple choice question has been scrambled)
  28. Most of the world's largest mountain belts were formed in response to-
    A. tensional stress
    B. metamorphism
    C. compressional stress
    D. intrusions
    C. compressional stress
    (this multiple choice question has been scrambled)
  29. The Basin and Range Province of the western US are characterized by a large number of-
    A. folded mountains
    B. ice covered mountain peaks
    C. fault block mountains
    D. volcanoes
    C. fault block mountains
    (this multiple choice question has been scrambled)
  30. A fold that exposes beds that dip in toward the center of the fold is a-
    A. syncline
    B. anticline
    C. monocline
    D. homocline
    A. syncline
    (this multiple choice question has been scrambled)
  31. The low-standing plains between horst-blocks are-
    A. graben
    B. draboids
    C. monoclines
    D. anti-horst
    A. graben
    (this multiple choice question has been scrambled)
  32. According to the concept of ___, "floating" mountains adjust their elevation in response to the erosion by upward buoyancy as surface material is removed.
    A. isostasy
    B. block faulting
    C. geosynclines
    D. delamination
    A. isostasy
    (this multiple choice question has been scrambled)
  33. The Alps, Himalayas, and Appalachains-
    A. are horst blocks
    B. are folded mountains
    C. have little in common
    D. are volcanic
    B. are folded mountains
    (this multiple choice question has been scrambled)
  34. The compass direction formed by the intersection of a dipping surface and a horizontal place is the-
    A. dip
    B. rake
    C. plunge
    D. strike
    D. strike
    (this multiple choice question has been scrambled)
  35. Fractures in rock without movement along the fractures are called-
    A. fracts
    B. ankles
    C. joints
    D. dips
    C. joints
    (this multiple choice question has been scrambled)
  36. Source materials for the sedimentary rocks in the Appalachian Mountains was located to the ____ of the present day mountains.
    A. north
    B. west
    C. east
    D. south
    C. east
    (this multiple choice question has been scrambled)
  37. The Coast Ranges of Washington, Oregon, and northern California are formed by-
    A. faulting
    B. laccoliths
    C. folding
    D. volcanoes
    D. volcanoes
    (this multiple choice question has been scrambled)
  38. The Andres Mountains of South America are an example of mountains formed by-
    A. ocean plate-continental plate convergence
    B. rifting
    C. stretching the crust
    D. collision of China and South America
    A. ocean-continental convergence
    (this multiple choice question has been scrambled)
  39. The Basin and Range topography of western US is related to-
    A. squeezing the crust
    B. stretching the crust
    C. folding the crust
    B. stretching the crust
    (this multiple choice question has been scrambled)
  40. The stable interior of the continent is known as its-
    A. neutron
    B. cruton
    C. craton
    D. futon
    C. craton
    (this multiple choice question has been scrambled)
  41. The Texas Hill Country and the Ozark Mountains are examples of mountain or hilly terrain formed by-
    A. dissection by stream erosion
    B. faulting
    C. vocanism
    D. folding
    A. dissection by stream erosion
    (this multiple choice question has been scrambled)
  42. The core of the Sierra Nevada Mountains and Smoky Mountains exposes-
    A. volcanic rock
    B. folded layers
    C. igneous rock
    C. igneous rock
    (this multiple choice question has been scrambled)
  43. The North American continent has grown progressively-
    A. fatter by sedimentation
    B. smaller by transform faulting
    C. taller by crustal loading
    D. larger by continental accretion
    D. larger by continental accretion
    (this multiple choice question has been scrambled)
  44. The term Aorogeny refers to-
    A. mountain building
    B. a type of fault
    C. volcanism
    D. a type of fold
    A. mountain building
    (this multiple choice question has been scrambled)
  45. The oldest rocks in North America can be found in-
    A. Canada
    B. Kansas
    C. California
    D. Florida
    A. Canada
    (this multiple choice question has been scrambled)

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