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Marine Landforms or Coastal Landforms and Cycle of Erosion

Filed under: Geography Hydrosphere on 2021-07-29 16:08:54
Marine Landforms or Coastal Landforms

# Erosional Landforms: Chasms, Wave-Cut Platform, Sea Cliff, Sea Caves, Sea Arches, Stacks/Skarries/Chimney Rock, Blow Holes or Spouting Horns etc..

# Depositional Landforms: Beach, Bar, Barrier, Spit and Hook, Tombolos etc..

# Coastlines: Coastline of Emergence, Coastline of Submergence, Neutral coastline, Compound coastline and Fault coastline

Marine Landforms and Cycle of Erosion: 

# Sea waves, aided by winds, currents, tides and storms carry on the erosional and depositional processes.
# The erosive work of the sea depends upon size and strength of waves, slope, height of the shore between low and high tides, shape of the coast, composition of rocks, depth of water, human activity etc.
# The wave pressure compresses the air trapped inside rock fissures, joints, faults, etc. forcing it to expand and rupture the rocks along weak points. This is how rocks undergo weathering under wave action.
# Waves also use rock debris as instruments of erosion (glaciers are quite good at this). These rock fragments carried by waves themselves get worn down by striking against the coast or against one another.
# The solvent or chemical action of waves is another mode of erosion, but it is pronounced only in case of soluble rocks like limestone and chalk.
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