Periglaciation
Natural processes associated with freezing and thawing in regions close to glaciers / From Wikipedia, the free encyclopedia
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Periglaciation (adjective: "periglacial", referring to places at the edges of glacial areas) describes geomorphic processes that result from seasonal thawing and freezing, very often in areas of permafrost. The meltwater may refreeze in ice wedges and other structures.[1][2] "Periglacial" originally suggested an environment located on the margin of past glaciers. However, freeze and thaw cycles influence landscapes also outside areas of past glaciation.[3] Therefore, periglacial environments are anywhere when freezing and thawing modify the landscape in a significant manner.[4]