Formation of a Wave Cut Platform Flashcards
Weaknesses…undercut…wave-cut notch
weaknesses such as joints or cracks in the cliff are undercut by erosion to form a wave-cut notch
These cracks are eroded by hydraulic action- WHAT is hydraulic action???
When the sheer force of the waves entering cracks in the rock, compressing the air and forcing pieces of rock to break off
What is abrasion?
Abrasion is when rocks carried by the water are thrown against the cliff causing abrasive action, wearing away the rock
Rock overhangs…
The rock above overhangs over the notch
Unsupported overhang collapses
Unsupported overhang collapses due to the weight and gravity
Cliff retreats, what does this leave?
The cliff retreats inland, leaving a gently-sloping rocky surface called a wave-cut platform which extends out to sea away from the cliff
