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Coastal Zone Shaping the Coastal Zone Geography Revision




Coastal Weathering & Erosion
Weathering
Rock is broken down through Mechanical and Chemical Weathering

Chemical Weathering: The breakdown of rock by changing its chemical composition.
Carbonation weathering is a type of chemical weathering which happens in warm and wet climates

Rainwater has…

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Coastal Zone Shaping the Coastal Zone Geography Revision




Coastal Landforms Caused by Erosion
Cliff Retreat
Cliff retreat occurs at the foot of a cliff
The processes which cause cliff retreat are hydraulic action and abrasion
Initially, hydraulic action, quickened by corrosion, form cracks at the base of the cliff
These…

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Coastal Zone Shaping the Coastal Zone Geography Revision




Headland Erosion




Headlands are made from resistant materials, which is why they stick out. However, they
have weaknesses ­ such as cracks which have formed by mechanical weathering over time
Waves crash into the headlands and enlarge the cracks, mainly through hydraulic…

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Coastal Zone Shaping the Coastal Zone Geography Revision




Coastal Transportation and Deposition
Transportation ­ The Movement of Material
Material is transported along coasts by the process of longshore drift:
o Waves follow the direction of the prevailing (most common) wind
o These usually hit the coast at an oblique angle…

Page 5

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Coastal Zone Shaping the Coastal Zone Geography Revision




Coastal Landforms Caused by Deposition
Beaches
Beaches are found on coasts between the high water and low water mark
They are formed by constructive waves depositing material such as sand and shingle
o Sand beaches are flat and wide ­ as sand…

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