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Matu 11 limestone features 1

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Matu 11 limestone features 1

  1. 1. Limestone Features To be able to explain the formation of limestone features
  2. 2. Can you describe Limestone?
  3. 3. Limestone is a sedimentary rock
  4. 4. Can you explain how Limestone formed? • Include.... –Tropical –Sea Creatures –Sedimentation –Compression –Lithification –Uplift –Joints –Bedding planes
  5. 5. The main features of Limestone Group Teach - Notes • Structure • Permeability • Vulnerability
  6. 6. Jura Mountains (1)
  7. 7. Jura Mountains (2)
  8. 8. Doline
  9. 9. Limestone landscapes Press play on the animations below to see different ways in which limestone is weathered.
  10. 10. Limestone properties Unlike some other forms of limestone, carboniferous limestone is very hard. It has been used as a building material for thousands of years. Carboniferous limestone was even used to build the Great Pyramid of Giza, which is the only wonder of the ancient world still standing. It is over 4,500 years old.
  11. 11. Gravestone from south-east England This gravestone is also made out of carboniferous limestone. It has only been around for 300 years – but it’s not in as good shape. There is even a hole right through the middle. Limestone properties
  12. 12. Limestone weathering Carboniferous limestone is made up of calcium carbonate (CaCO3). Calcium carbonate is vulnerable to chemical solution, a form of chemical weathering caused by rainfall. When rainwater absorbs carbon dioxide, it forms carbonic acid (H2CO3). This is a weak acid which over time will dissolve limestone to produce various exotic features. This process is known as chemical solution or limestone solution.
  13. 13. The Main Limestone Feature – Identify, Diagrams and explanations... • Surface • Swallow Holes • Limestone Pavement (Clints and Grykes) • Dry Valleys • Gorge (collapsed Cavern) • Doline/ Sink Hole • Spring/ Resurgence • Underground • Caverns • Stalactites and Stalagmites (Pillars)
  14. 14. Extension.... • Devise a 10 question quiz for the class on Limestone features. All questions must be True/ False answers.....
  15. 15. Name the landforms
  16. 16. • A Question of Limestone......

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