Geography: Wind and Ice Erosion
- Created by: lineventer
- Created on: 28-10-18 12:58
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- Erosion: Wind and Ice
- Glaciers
- Erode land. The material in the ice gets dumped when melting- deposition features
- Moraines- rock left at sides (lateral) and end (terminal) of glacier as it melts.
- Eskers- Meandering ridges of sand and stones formed by rivers under glacier.
- Drumlins- Rounded hills. Materials deposited beneath ice and shaped by movement of glacier
- Eskers- Meandering ridges of sand and stones formed by rivers under glacier.
- Cirques
- Bowl-shaped hollows in glaciated mountain areas.
- Snow fills hollow, lower layers are compressed and become ice. Eventually ice will become glacier
- Weight of glacier and force of gravity moves glacier. While moving erodes into hollow making it deeper
- Arete
- Ridge on a mountain which has been eroded by a series of glaciers on both sides
- Pointed peak- horn
- U-shaped valleys
- Glaciers will come together to make bigger glaciers in lower areas- valley glaciers
- Valley glaciers cause bigger and more destructive erosion
- Spurs will be cut off that are in the valleys. The glacier widens the V shape (valley bottom) to U shape
- Remains of spurs- truncated spurs
- Wind Erosion
- Most features made by abrasion. Abrasion biggest effect close ground (most material transported by wind.
- Mushroom rock- base a lot narrower than rock above ground. Yardangs- long ridges caused by wind erosion and troughs
- Wind Deposition
- Material deposited when wind speed drops. Barchans, Sief dunes, Transverse dunes
- Most common- sand dune. Shape and position will change after storm. Never in one place for long
- Glaciers
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