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What Process can shape a Limestone Pavement?
Carbonation
What is Limestone?
A Grey, Organic Sedimentary Rock
Made of Calcium Carbonate.
What Structure does Limestone Contain?
Contains Horizontal Bedding Planes
And Joints
Why is Limestone chemically Weathered?
Due to its Composition and Structure.
What Process of Chemical Weathering Effects Limestone?
Carbonation
What Happens as Rain falls through the Atmosphere?
Water mixes with CO2 in the air.
Becomes a Weak Carbonic Acid
What Happens if Acidic Water passes through the Soil?
Picks up additional Acids
Where are these Additional Acids obtained from?
Obtained from Rotting Vegetation.
What Happens when the Weak Carbonic Acid hits Limestone?
Acid Rainwater Reacts with Calcium Carbonate
Becomes Calcium Bicarbonate
What type of Solubility is Calcium Bicarbonate?
Soluble
What does the Soluble feature of Calcium Bicarbonate do?
Can Wash away
What does ‘Pervious’ mean?
Rocks which are Porous and Allow Water to flow Freely.
What happens when Joints in the Rock when the Joints Widen?
Become Grikes
Whats a feature of Limestone?
Grikes
Where can a Limestone Formation be seen?
The Burren Co. Clare
What did the Limestone in the Burren form under?
Under Soil which covered the Land.
What Specific Age Event did the Soil cover the Limestone?
During the Ice Age
What is a ‘Karren’
Smalls pits onto of a Karst Landscape / Limestone Pavement.
What are Clints ?
Clints are the flat pavements of limestone In between grikes
What are Grikes ?
Grikes are gaps in between pavement on a limestone pavement
Form as a result of joints widening
