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Key Ideas - Glaciation |
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Glaciation Processes |
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 A
glacier is a system with
inputs,
flows,
stores
and
outputs.
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The balance between
accumulation
and
ablation
determines whether a glacier will advance or retreat.
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Glacial
processes include
frost
shattering,
plucking
and
abrasion.
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Frost
shattering is a type of
weathering.
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Plucking
and abrasion are processes of
erosion.
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Glaciation Landscapes |
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 Corries,
arêtes, pyramidal peaks and glacial troughs are created by
glacial erosion.
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Moraines,
drumlins and erratics are the result of
glacial deposition.
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Moraine
is a type of landform that is created when a glacier deposits the
material (till) that it has been transporting. |
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There
are
five
main types of moraine. |
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Contour
patterns
on maps can give a clear indication as to whether a
landscape has been glaciated.
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Glaciated Area Land Use |
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Pastoral farming is traditionally the main land use in
upland
glaciated areas such as the Lake District and Snowdonia.
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Other land uses include: water supply, energy production,
forestry, transport and tourist facilities including skiing.
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The main issues affecting upland glaciated
areas are the
decline in farming
and the
growth of tourism,
including the growth of second home ownership.
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| Management schemes exist in order to help upland glaciated areas adapt to recent changes. | ||