Coastlines 2

Coastlines 2

1. Deposition will occur..

   • 1. If waves enter shallow water 2. If there is not a lot of wind. 3. If the material is heavy

2. LANDFORMS CREATED BY EROSION

   • Headlands and Bays
   • Arches, Caves, Stacks & Stumps
     • 1. Waves attack the fault which is a weakness in the headland
     • 2. A cave is formed, through processes of erosion such as hydraulic action and corrasion
     • 3. Eventually, the cave erode through the headland to form an arch
     • 4. The roof of the arch collapses leaving a column of rock called a stack
     • 5. The stack collapses leaving a stump
     • Example **OLD HARRY AND HIS WIFE IN DORSET**

3. LANDFORMS CREATED BY DEPOSITION

   • Deposition spit
     • Example **HURST CASTLE SPIT IN HAMPSHIRE**
     • A spit is an area of sand or shingle which either extends at a gentle angle out to sea or which grows across a river estuary. Many spits are characterised by a hooked, or curved end. Spits only develop in places where longshore drift moves large amounts of material along the beach, or if there is a sudden change in the direction of the coastline or even if the sea is relatively shallow and becomes progressively more sheltered.
     • How it is formed: Prevailing winds from the south west. Material carried east along the beach by longshore drift. Sand and shingles get deposited where coastline changes direction. Spit continues to grow outwards. Speed of river prevents spit growing all the way across the estuary.

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