geology lecture test 2

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morgansmash
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299192
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geology lecture test 2
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2015-03-25 19:15:58
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  1. a desert receives less than (  ) of rainfall a year
    10 inches
  2. 2 reasons why deserts exist
    exist in shadow of a mountain, extreme in temperatures
  3. wind picking up particles and carrying them away
    deflation
  4. particles that are typically carried in the suspended load of wind
    clay and silt
  5. 2 types of crescent shaped sand dunes
    barchan, parabolic
  6. dune that is formed when the wind changes direction often
    star
  7. source of loess
    glacial outwash
  8. area in deserts surrounded from which water doesn't drain
    bolson
  9. gently sloping edges of a bolson, made from alluvial fans
    bajada
  10. extrusive
    volcanic
  11. gasses that escape from lava
    volatiles
  12. 2 gasses that escape from lava
    water vapor, carbon dioxide
  13. igneous texture with no crystals
    glassy
  14. glassy textures occur due to (  ) cooling
    extremely rapid
  15. 2 minerals found in granite
    biotite mica, potassium feldspar
  16. 2 extrusive mafic rocks
    basalt, scoria
  17. extrusive intermediate rock
    rhyolite
  18. minerals or elements often associated with hypothermal solutions
    gold and silver
  19. high viscosity lava
    aa lava
  20. smooth sided rocks caused by wind abrasion
    ventifact
  21. volcanic bomb
    still molten when ejected
  22. sand sized pyroclastic material
    ash
  23. golf ball sized pyroclastic material
    lapilli
  24. depression at the top of a volcano
    crater
  25. large depression at the top of a volcano
    caldera
  26. smallest type of volcano
    cinder cone
  27. cinder cone volcano made of
    cinders
  28. largest type of volcanos
    shield volcanos
  29. steepness of shield volcanos
    least steep
  30. mt. vesuvius, mt. st. helens, mt fuji
    composite cones
  31. small volcano on the side of larger one
    parasitic cone
  32. area of intensive volcanic activity around edge of Pacific Ocean
    Ring of Fire
  33. common type of plate boundary in Ring of Fire
    converged
  34. volcanism typically occurs at bottom of oceans
    spreading center
  35. columnar jointing occurs because
    magma shrinks as it cools
  36. tabular concordant pluton
    laccolith
  37. discordant means that the pluton is (  ) to existing rock layers
    not parallel
  38. 2 places mostly covered by glaciars
    Antarctica, Greenland
  39. ability to bend without breaking
    plastic
  40. surface of a glacier that cannot bend w/o breaking
    zone of fracture
  41. 2 types of glacial ablation
    melting, calving
  42. when a glacier picks up a chunk of rock and carries it away
    plucking
  43. plucking causes
    cirque
  44. glaciated valley
    glacial trough
  45. drowned glacial valley
    fjord
  46. scattered rocks and boulders brought to area by glaciars
    erratics
  47. (  ) moraine is first in series of end moraines
    terminal moraine
  48. tear drop shaped mound of glacial material
    dromlin
  49. rock flour
  50. glacial outwash is composed of

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