Limestone

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  • Limestone
    • formed under water
    • sea creatures die and decay and sea bed
    • over time calcium carbonate becomes compressed to become limestone
    • overtime sea level changes and tectonic processes bring the limestone to the surface
    • Chemical solution
      • rainwater absorbs C02 and becomes acidic. This dissolves limestone
    • Limestone Pavements
      • water gets into cracks and dissolves away the rock.
      • flat surface is called clints
      • cracks called grykes
    • Cavern
      • acidic rainwater dissolves away the rock, until a hole becomes larger and larger
      • until water can flow through, eroding it
    • Swallow holes
      • depression in the ground, usually in limestone that is connected and formed by rain.
      • can also be formed by the collapse of a cavern roof
    • StalaCtites
      • hangs from the ceiling
      • form from the deposition of limestone, they then solidfy
      • grow downwards
    • StalaGmites
      • rises from the ground
      • formed from rain water dripping from ceiling
    • Pillar
      • when stalagmites and stalactites meet
    • Gorges
      • when rooves of caverns collapse.
      • acidic rainwater erodes the inside of caverns until cannot support roof
    • Land use- tourism quarrying farming militry
    • Quarrying
      • Benefits
        • jobs
        • transport links
        • money into economy
      • Problems
        • dust and noise pollution
        • scars landscape
        • heavy traffic
        • destroys animal habitats

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