Quiz

1
Quiz 3 3/6/03

• Compaction and cementation are two common
  sedimentary processes associated with
• erosion
• transportation
• deposition
• lithification

2

• A sedimentary rock made of fragments of
  preexisting rock is
• biochemical (organic)
• chemical
• clastic

3

• Which of the following depositional environments
  would you expect to produce cross-bedding like
  that shown below?
• deep marine
• swamp
• desert
• glacier

4

• A warm, shallow, tropical marine environment can
  produce sediment with the following
  characteristics.
• inorganic and biochemically precipitated
  limestones
• sandstone with large-scale cross beds
• red, coarse, angular breccia
• black shale with tree and fern fossils

5
5. Clastic sediment that has very coarse, angular
grains (gravel) and is very poorly sorted

• has traveled very far from its source area
• is most likely to be deposited in the deep
  ocean
• is commonly transported by air.
• has not traveled very far from its source area

6

• 6. Which is not a chemical or biochemical
  sedimentary rock?
• rock salt
• shale
• limestone
• gypsum

7

• 7. What kind of sedimentary structure is shown
  in the diagram below
• mud cracks
• graded beds
• cross bedding
• ripple marks

8

• Metamorphic rocks are broadly classified based on
• texture - presence or absence of foliation
• depositional environment
• chemical composition

9

• When rocks are metamorphosed, the mineral
  components of the rock are
• recrystallized in the solid state
• melted first, then crystallized again to form
  a new rock
• shattered by mechanical processes

10

• 10. Limestone transforms during metamorphism
  into
• slate
• marble
• quartzite
• gneiss