FLUVIAL LANDFORMS FORMED BY DEPOSITION

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What are flood plains?
- Wide valley floor on either side of river which occasionally gets flooded.
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Formation of flood plains
-River floods onto flood plain=water slows down+deposits material(builds up flood plain(makes it higher)).-Meanders migrate across flood plain, making it wider,+migrate downstream, flattening out valley floor.-Slip-off slopes' deposition builds upFP
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What are levees?
-Natural embankments along edges of river channel.-During flood eroded material is deposited over whole flood plain.-Heaviest material is deposited closest to river channel, as it gets dropped first when river slows down.-Deposited material builds up
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What are estuaries?
-Found at mouth of river.-Land close to sea level+river valley is at its widest.-Water is tidal here(changing water levels)
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Formation of estuaries
.-Water floods over river banks carrying silt+sand onto valley floor.-High tide=water moves very slowly so sediment is deposited.-Overtime, more+more mud builds up, creating large areas of mudflats.-Low tide=the wide,muddy banks are exposed.
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Other cards in this set

Card 2

Front

Formation of flood plains

Back

-River floods onto flood plain=water slows down+deposits material(builds up flood plain(makes it higher)).-Meanders migrate across flood plain, making it wider,+migrate downstream, flattening out valley floor.-Slip-off slopes' deposition builds upFP

Card 3

Front

What are levees?

Back

Preview of the front of card 3

Card 4

Front

What are estuaries?

Back

Preview of the front of card 4

Card 5

Front

Formation of estuaries

Back

Preview of the front of card 5

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