Cards (7)

  • Alluvial deposits, sediment deposited from high energy environments will be large clasts and low energy environments will deposit fine clasts like clay. 
     
  • Densities:
    • Platinum
    • Gold
    • Iron
    • Tin
    • Diamonds
    • Gravel
    • Sand
    • Clay
  • processes involved in sedimentation:
    • Weathering
    • Erosion
    • Deposition
    • Compaction and burial
    • Cementation
  • Biological sediments are found from marine environments, made from shells, coral and coccolithophores. 
  • Proterozoic marine sediments contain iron ore deposits. Dissolved iron compounds oxidise and precipitate out of solution and are deposited on the sea bed. 
  • Evaporites are formed when a body of water evaporates and minerals are left behind.  
    Calcite
    Gypsum
    Anhydrite
    Halite
    Potassium-magnesium salts 
     
  • Biological deposits are things like coal and oil. Found in delta sequences