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Shaping Earths Crust

Weathering Junior cert revision notes

TermDefinition
Denudation Occurs by Weathering and Erosion
Weathering This is the breakdown and decay of rocks that are exposed to the weather. Waste material is not removed
Erosion This is the breaking down of rocks and the removal of the particles that result
Mechanical Weathering Causes rock to be physically broken into smaller pieces
Chemical Weathering This occurs when rocks decay or dissolve due to a chemical change
Freeze thaw action A type of mechanical weathering, can be known as frost action
Carbonation A type of chemical weathering,needs carbon dioxide and rainwater to occur
Stalactites Icicle shaped pieces of calcite that hang from the ceiling of a cavern
Stalagmites Cone shaped pieces of calcite that build up from the ground
Pillar/Column Feature formed when a stalactite and stalagmite join together
Cavern The chamber formed when a cave is enlarged
Swallow Hole The passage through which a river disappears in a Karst region
Grikes Gashes on limestone pavement that are enlarged by carbonation
Limestone Pavement Flat terraces of exposed Limestone
Bedding Planes The horizontal cracks in limestone
Joints The vertical cracks in limestone
Scree The waste material formed as a result of freeze thaw action
Flora The plant life of an area
Fauna The wildlife of an area
Carbonic Acid The weak acid rain formed when carbon dioxide and rainwater are mixed
Karst Region An area where soil has been removed and limestone is exposed at the surface
Calcium Carbonate Otherwise known as dissolved limestone (CC)
The Burren Karst landscape of world importance, comes from the Irish for 'rocky place'
Created by: dxm1055