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Rocks - Coggle Diagram

- - - - It may become trapped beneath the surface and cools very slowly. This is known as intrusive igneous rock.
        
        If it breaks through the surface it begins to cool as it hits the air. This is known as extrusive igneous rock
        
        Examples: Granite (Intrusive igneous) - Multi-coloured, used for countertops, gravestones, can be found in the Dublin-Wicklow and Mourne mountains
        
        Basalt: (Extrusive igneous) - Grey/Black in colour, crushed basalt is used in road building. Can be found in Antrim - the Giant's Causeway
  - - - Some broken pieces are dropped in layers on the sea floor.
        
        Here they become compressed and mix with dead sea creatures to form sedimentary rock.
        
        Examples: Sandstone - typically red/brown in colour. Used to make tiles. Found in MacGillicuddy Reeks, Co.Kerry
        
        Limestone: Most common rock in Ireland. Some remains of dead sea creatures are preserved on the rocks as fossils. Limestone is permeable - water can pass through. It's also soluble - it will dissolve in water. Used as a base for building roads. Found in the Burren, Co. Clare.
  - - - Formed when igneous or sedimentary rocks are put under great heat (from magma) or pressure (from folding) - it changes into a new, harder rock.
        
        Example: Marble - formed when limestone is put under great heat and pressure. Usually white but can be green or black. Used in making headstones, fireplaces. White marble found in Malin Head, Co.Donegal. Black marble in Killarney.
        
        Quartzite - formed when sandstone comes under great heat and pressure. Grey to white in colour, very hard texture. Used in surfacing roads, watches and in glass. Found at the top of the Sugarloaf in Co. Wicklow & Croagh Patrick in Co. Mayo.
- - - - Minerals are inorganic - they do not come from animals or plants
        
        Make up our landscape and provide us with many essential resources