Levin, Chapter 5

Test your knowledge by selecting an answer and pressing the Submit answer button.

  1. Why are cratons so flat?
    They are composed of basalt flows.
    They are part of the earth's original crust.
    They have undergone long-term erosion.
    They were formed before plate tectonics began.
    They were formed under the ocean.

  2. What is a diagnostic characteristic of sediments formed from turbidity currents?
    Graded bedding
    High clay content
    High quartz content
    Mud cracks
    Poor sorting

  3. Which physiographic province is cut by submarine canyons from turbidity current erosion?
    Abyssal hills
    Abyssal plains
    Continental rise
    Continental shelf
    Continental slope

  4. Which physiographic province is contains the thickest sedimentary deposits?
    Abyssal hills
    Abyssal plains
    Continental rise
    Continental shelf
    Continental slope

  5. What environments produce sediments that are very poorly sorted (all sizes of rock fragments are mixed together)?
    Alluvial fans and playa lakes
    Barrier islands and lagoons
    Glaciers
    Rivers and deltas
    Tidal flats

  6. What environments produce the bulk of coal deposits?
    Alluvial fans and playa lakes
    Barrier islands and lagoons
    Glaciers
    Rivers and deltas
    Tidal flats

  7. In what environment do alluvial fans generally form?
    Coastlines
    Deserts
    Glacial valleys
    Lakes
    River valleys

  8. In what environment do varves generally form?
    Coastlines
    Deserts
    Glacial valleys
    Lakes
    River valleys

  9. Which type of deltas have distributaries that can form a "bird's foot" extending out into a body of water?
    River-dominated
    Tide-dominated
    Wave-dominated

  10. Which type of deltas have the straightest coastlines?
    River-dominated
    Tide-dominated
    Wave-dominated

  11. How can lake sediments be distinguished from marine sediments?
    Distinctive fossils
    Greater quantities of clay
    Greater quantities of sand
    Greater quantities of silt
    Poor sorting of sediments

  12. What does black coloration in rocks usually indicate?
    Anoxic environments
    High temperature metamorphism
    Hypersaline environments
    Low temperature metamorphism
    Poor sorting of sediments

  13. What do geopetal structures help to identify?
    Direction of current flow
    Flooding events
    Glaciation
    Overturned strata
    Salinity levels

  14. Which of the following is not a characteristic of a mature sandstone?
    Few rock fragments
    Good sorting
    High clay content
    Rounded grains
    Spherical grains

  15. Which sandstone is generally the most mature (has been transported farthest)?
    Arkose
    Feldspar sandstone
    Graywacke
    Lithic sandstone
    Quartz sandstone

  16. What is a sandstone that contains more than 25% feldspar?
    Arkose
    Feldspar sandstone
    Graywacke
    Lithic sandstone
    Quartz sandstone

  17. What is chalk an example of?
    Coal
    Evaporite
    Limestone
    Sandstone
    Shale

  18. Where do sandstones generally form?
    Along beaches
    Far from shore
    In deep-sea trenches
    In deltas
    In playa lakes

  19. Where do limestones generally form?
    Along beaches
    Far from shore
    In deep-sea trenches
    In deltas
    In playa lakes

  20. What sequence of rocks (from bottom to top, of course) would likely be formed from a regression of the sea?
    An unconformity, then sandstone, shale, limestone
    An unconformity, then shale, limestone, sandstone
    An unconformity, then shale, sandstone, limestone
    Limestone, shale, sandstone, then an unconformity
    Sandstone, shale. limestone, then an unconformity

Please report any errors or problems to Dr. Heaton.
Press here to return to the ESCI 103 Home Page.