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20 Matching questions

  1. Flint, chert, and jasper are microcrystalline forms of ________.
  2. What is the main difference between a conglomerate and a sedimentary breccia?
  3. Which of the following applies to the basic constituents of halite, gypsum, and sylvite?
  4. A cherty limestone would contain which major constituents?
  5. Compaction is a very important part of the lithification process for which of the following sediments?
  6. Which type of limestone consists mainly of tiny, marine fossils composed of calcite?
  7. Studies of deep-sea sediment cores have contributed greatly to scientific knowledge of ________.
  8. Coal beds originate in ________.
  9. Which of the following best describes bedded gypsum and halite?
  10. Which characteristic is absolutely necessary for a sedimentary rock to have potential as a possible reservoir rock for oil or gas?
  11. Detrital sedimentary rocks are classified (named) based on the ________.
  12. What is probably the single most important, original, depositional feature in sedimentary rocks?
  13. Which of the following sedimentary rocks would you expect to have originally been deposited by fast-moving streams?
  14. ________ cement produces bright-red and yellow colors in some sandstone.
  15. Oolitic limestone is most likely to form in what type of depositional environment?
  16. ________ is a form of calcium carbonate.
  17. ________, a common mineral found in igneous rocks, is the most abundant mineral in detrital sedimentary rocks.
  18. Sedimentary rocks account for about what percentage of the Earth's outermost 10 kilometers of rock (first percentage). Also, what percentage of the Earth's continental area is covered by sedimentary rocks (second percentage)?
  19. What is the chemical formula for dolomite, the major mineral in dolostones?
  20. Nonclastic textures are common in which of the following sedimentary rocks?
  1. a climatic changes during the last four million years
  2. b high porosity
  3. c CaMg(CO3)2
  4. d Travertine
  5. e quartz (SiO2)
  6. f silica; calcite
  7. g grain sizes of the detrital particles
  8. h 5%; 75%
  9. i Iron oxide
  10. j evaporates; chemical, sedimentary rocks
  11. k transported as dissolved ions; deposited by evaporation
  12. l Quartz
  13. m Mud
  14. n conglomerate
  15. o chalk
  16. p Breccia clasts are angular; conglomerate clasts are rounded.
  17. q limestones
  18. r bedding or stratification
  19. s freshwater coastal swamps and bogs
  20. t shallow, clear, marine waters with vigorous current activity