Glaciers
- Created by: Jadelouisestokes
- Created on: 31-03-18 10:24
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- Glaciers
- Masses of ice that fill valleys and move downhill
- Erode landscapes when the move
- Plucking
- Melt water freezes on rock and is pulled out
- Abrasion
- Rock on bottom grinds on rock below (sandpaper)
- Rotational slip
- Top of glacier, ice moves in circular motion
- Erodes hollows which deepen to bowel shapes
- Plucking
- Landforms
- Arete
- 2 glaciers, steep sided ridge
- Striding ridge (lake district)
- Pyramidal peak
- 3 or more glaciers
- Snowdon- Wales
- Corries
- Begin as hollows, leaves a tarn
- Red tarn (lake district)
- Ribbon lakes
- form after glacier retreats
- Truncated spurs
- Spurs cut off as glacier passes- creates cliff like edges
- Hanging Valley
- Formed by small glaciers that flow into larger one
- When glaciers melt, valley left at higher level
- Glacial troughs
- steep sided valleys with flat bottom (V-U)
- Arete
- Till
- Unsorted mixture of rocks, sand...
- Glaciers transport this- through bulldozing
- When ice melts, morraines and drumlins form
- Morraines
- Lateral, medial, terminal, ground
- Drumlins
- Elongated hills
- round and blunt upstream, tapered and pointed downstream
- Largest over 1000m long, 500m wide and 50m high
- Erratics
- Large rocks that are picked up and deposited
- Morraines
- When ice melts, morraines and drumlins form
- Land use
- Farming (sheep uphill)
- Forestry for timber
- Quarrying of slate, limestone...
- Tourism eg Lake District
- Causes conflicts
- Strategies to overcome
- Resurface paths
- Reseed vegetation
- More public transoport
- Litter signs
- Encourage tourists to keep dogs on leads/close gates
- Strategies to overcome
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