Coastal Features - Landforms
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Transcript of Coastal Features - Landforms
EROSION – TRANSPORTATION - DEPOSITION
Coasts Page
LANDFORMS PRODUCED BY WAVE
EROSION Headland • This is a part of
the coastline that juts out into the sea and usually ends in a cliff.
Bay • A wide curved
inlet of a sea.
LANDFORMS PRODUCED BY WAVE EROSION
Wave cut notch • The foot of the
cliff which is undercut.
Wave cut platform
• This is the gently sloping land left on the foot of a retreating cliff.
Arch • An opening
through a rock.
Cave
• A deep hollow produced by the action of the waves usually at the foot of a cliff.
LANDFORMS PRODUCED BY WAVE EROSION
Stack • A pillar for rock
which has been isolated from the cliff due to the erosive nature of the waves.
LANDFORMS PRODUCED BY WAVE EROSION
WAVE CUT PLATFORM
Formation of headlands and bays
Sea attacking a coastline of varying resistance will erode
the weaker rock more quickly
The result is that a series of headlands form on the harder
rocks………
…..and sheltered bays form in the weaker
rocks
HEADLANDS, BAYS AND BEACHES
1. a. Waves attack both sides of a headland, producing caves;
2. b. Sometimes these are eroded right through the headland to form arches.
3. c. When the roof of the arch collapses it leaves a pillar or stack;
4. d. When the stack collapses it leaves a stump.
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Development of Old Harry
BLOW HOLES
• Caves develop well in jointed rocks as bedding planes are open by abrasion and hydraulic action. If a joint runs from the cave to the cliff top the hydraulic action can eventually force this joint open like a chimney inside the cliff .
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