Geography Karst Landscape

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  • Karst Landscape
    • bare limestone region
      • The Burren, Co.Clare
        • Chemical weathering + soil erosion =
    • Characteristics
      • lack of surface water
        • seeps through cracks & fissures
          • flows under ground
      • swallow holes
      • enclosed hollows - dolines
    • Reasons
      • permeable rock
        • water passes through fissures and bedding planes
      • rock is jointed
      • bedding planes
      • calcium carbonate
        • carbonation
          • CO2 + H2O = H2CO3
            • air + water = carbonic acid
          • CACO3 + H2CO3 = Ca(HCO3)2
            • limestone + carbonic acid = calcium bicarbonate
    • Surface features
      • limestone pavement
      • swallow holes
      • dolines
        • /sinkholes
      • turloughs
    • Underground features
      • caves
      • dripstones
        • stalactites
        • stalagmites
        • pillars
        • curtains

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