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317; Lecture 22

TermDefinition
Coastal erosion the removal of sediment and rocks along the coastline due to the action of waves, currents, tides, wind-driven water, waterborne ice, or storm impacts
Shore platforms flat to gently sloping rocky surface found at the base of a sea cliff created by erosion
Horizontal shore platform A shore platform with a slope of 0°
Sloping platforms A shore platform with a slope between 1°-5°
Plunging cliffs lack any development of shore platforms
Headland an area of hard rock that extends to the shoreline and sits at a higher elevation than the shoreline
Notches develop through undercutting of steep coastal slopes
Potholes roughly cylindrical or bowl-shaped depressions in shore platforms formed by grinding induced by the swirling of sand, gravel, and pebbles
Sea caves a hollow excavated by waves in a zone of weakness on a cliff (bedding planes, joints, faults)
Blowholes upward erosion in a sea cave by spraying water from crashing waves erodes through the roof of a cave
Sea gorge narrow, steep-sided opening developed by erosion along vertical fault planes or joints
Arches waves crash on both sides of a narrow cliff that protrudes out into the sea forming an opening through the base
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Created by: turboqueen