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Rocks - Coggle Diagram
Rocks
Sedimentary
- Formed from remains of other rocks
- Deposited on beds of seas/lakes/land
- They're then compressed and cemented together
Limestone
Formed from skeletons of seas animals piled up over millions of years + preserved in rock as fossils.
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Sandstone
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E.G., MacGillycuddy's Reeks, Galtees etc.
Igneous
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Basalt
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E.g., The Giants Causeway
Metamorphic
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Marble
When molten magma forces its way into body of limestone, puts it under great pressure + heat. It changes the make-up of the limestone, and it turns into marble.
Colour = White (pure), red, green, black
E.g., Rathlin Island, Connemara etc,
Quartzite
Formed when sandstone came into contact with magma in Earth's crust. Usually happens during periods of folding
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E.g., Croagh Patrick in Co. Mayo