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34 True/False questions

  1. SortingA succession of sedimentary beds.

          

  2. shaleA succession of sedimentary beds.

          

  3. biochemical sedimentary rockSedimentary rock made up of minerals that precipitate directly from water solution.

          

  4. regressionThe inland migration of shoreline resulting from a rise in sea level.

          

  5. diagenesisA fragment of detritus (e.g., a sand grain or a pebble).

          

  6. graded bedA layer of clastic sediment or sedimentary rock in which clast size progressively decreases from the base to the top of the bed; graded beds form by deposition from a turbidity current.

          

  7. SubsidenceVery fine-grained sedimentary rock that will not easily split into sheets.

          

  8. dolostoneA type of carbonate sedimentary rock that contains significant quantities of dolomite.

          

  9. brecciaCoarse sedimentary rock consisting of angular fragments; or rock broken into angular fragments by faulting.

          

  10. mudstoneVery fine-grained sedimentary rock that will not easily split into sheets.

          

  11. clastic sedimentary rockSedimentary rock consisting of cemented-together detritus derived from the weathering of preexisting rock.

          

  12. sedimentary rockA depression, created as a consequence of subsidence, that fills with sediment.

          

  13. SandstoneCoarse-grained sedimentary rock consisting almost entirely of quartz.

          

  14. organic sedimentary rockSedimentary rock consisting of cemented-together detritus derived from the weathering of preexisting rock.

          

  15. arkoseThe grinding away and removal of Earth's surface materials by moving water, air, or ice.

          

  16. travertineSedimentary rock composed of calcite.

          

  17. DepositionThe process by which sediment settles out of a transporting medium.

          

  18. ClastsVery fine-grained sedimentary rock that breaks into thin sheets.

          

  19. cross bedA lamination inclined to the main bedding; it represents the slip face of a layer deposited in a current.

          

  20. lithificationThe transformation of loose sediment into solid rock through compaction and cementation.

          

  21. sedimentary basinRock that forms either by the cementing together of fragments broken off preexisting rock or by the precipitation of mineral crystals out of water solutions at or near the Earth_s surface.

          

  22. transgressionThe seaward migration of a shoreline caused by a lowering of sea level.

          

  23. bedVery fine-grained sedimentary rock that breaks into thin sheets.

          

  24. turbidity currentA submarine avalanche of sediment and water that speeds down a submarine slope.

          

  25. chemical sedimentary rockSedimentary rock made up of minerals that precipitate directly from water solution.

          

  26. stratigraphic formationThe transformation of loose sediment into solid rock through compaction and cementation.

          

  27. siltstoneFine-grained sedimentary rock generally composed of very small quartz grains.

          

  28. sedimentary structureRock that forms either by the cementing together of fragments broken off preexisting rock or by the precipitation of mineral crystals out of water solutions at or near the Earth_s surface.

          

  29. strataVery fine-grained sedimentary rock that breaks into thin sheets.

          

  30. LimestoneSedimentary rock composed of calcite.

          

  31. erosionThe grinding away and removal of Earth's surface materials by moving water, air, or ice.

          

  32. ConglomerateA type of carbonate sedimentary rock that contains significant quantities of dolomite.

          

  33. CementationThe process by which sediment settles out of a transporting medium.

          

  34. ripple marksWave-like ridges and troughs on the surface of a sedimentary layer formed during deposition in a current.