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Glaciation Types Alpine glaciation: found in mountainous regionsAlpine glaciation: found in mountainous regions Continental glaciation: exists where a large part of a continent is covered by glacial iceContinental glaciation: exists where a large part of a continent is covered by glacial ice Cover vast areas
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Glaciers
• Glacier: a large, long-lasting mass of ice, formed on Glacier: a large, long-lasting mass of ice, formed on land that moves under the influence of gravity and land that moves under the influence of gravity and its own weight its own weight
• Glaciers form by accumulation and compaction of Glaciers form by accumulation and compaction of snowsnow– Packed snow becomes Packed snow becomes firm– Then refreezes to iceThen refreezes to ice
Glaciation Types
• Alpine glaciation: found in mountainous Alpine glaciation: found in mountainous regions regions
• Continental glaciation: exists where a Continental glaciation: exists where a large part of a continent is covered by large part of a continent is covered by glacial iceglacial iceCover vast areas
Horn Arete
A steep-sided, pyramid-shaped peak produced
by headward erosion ofseveral cirques.
A sharp, jagged, knife-edge ridge
between two cirques or glaciated valleys.
GlacialTill
Loess
GlacialSediments ___________________
Unsorted and unstratified sediments
that collect directlyfrom the melting of ice.
Unstratified sheets ofclayey silt that are
transported beyond themargins of a glacier by
wind and/or braided streams______________________
Kettles
A round lake in a depression in glacial drift...formed by melting of an isolated block of ice.
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