Desert Landforms

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  • Created by: bayleyc
  • Created on: 31-03-16 23:18
Yardangs
Rock ridges that lie parallel to the prevailing wind. Strata are steeply dipping and the edge of landform is defined by changes in rock type. Formed by abrasion.
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Zeugen
Rock ridges lying parallel to prevailing wind, formed by abrasion. Strata is horizontal and ridges often have cap of resistant rock.
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Sand Dunes
Formed by the shaping of loose sand by the wind. Their shape is dependent upon their relationship to the wind.
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Barchan Sand Dunes
Crescent shaped with two horns facing down wind. Formed by prevailing wind coming from one direction. Horns move further as there is less sand to carry. Windward slope is gentle, leeward slope is steeper. Saltation builds up windward slope.
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Linear Ridges and Seif Dunes
Linear ridges are elongated dunes with crests influenced by prevailing wind. Self dunes have serrated crests and sides. Shape is determined by localised wind eddies. Can be 100km long and 200m high.
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Star Dunes
Develop when strong winds blow from several directions with no dominant one. Pyramidal shape with 3 or more slip faces that join in a high central mound of sand.
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Other cards in this set

Card 2

Front

Rock ridges lying parallel to prevailing wind, formed by abrasion. Strata is horizontal and ridges often have cap of resistant rock.

Back

Zeugen

Card 3

Front

Formed by the shaping of loose sand by the wind. Their shape is dependent upon their relationship to the wind.

Back

Preview of the back of card 3

Card 4

Front

Crescent shaped with two horns facing down wind. Formed by prevailing wind coming from one direction. Horns move further as there is less sand to carry. Windward slope is gentle, leeward slope is steeper. Saltation builds up windward slope.

Back

Preview of the back of card 4

Card 5

Front

Linear ridges are elongated dunes with crests influenced by prevailing wind. Self dunes have serrated crests and sides. Shape is determined by localised wind eddies. Can be 100km long and 200m high.

Back

Preview of the back of card 5
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