collapsed lake plain

collapsed lake plain
   A lake plain formed on, and bounded by, glacial ice and subsequently "let down" or collapsed by the melting of underlying ice resulting in contortion or folding of the sediments and sedimentary structures. Lacustrine sediments cap present topography.
   Compare: lake plain.
   SW & CF

Glossary of landform and geologic terms. 2013.

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  • collapsed outwash plain —    An outwash plain which forms on glacial ice (inside the glacial margin), and is subsequently let down or collapsed when the underlying ice melts, resulting in contortion or folding of the sediments and sedimentary structures to the extent that …   Glossary of landform and geologic terms

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  • collapsed ice-floored lakebed —    A lakebed formed in a lake on glacial ice and subsequently let down or collapsed by the melting of underlying ice, resulting in contortion or folding of the lacustrine sediment and sedimentary structures. These modified or distorted lacustrine …   Glossary of landform and geologic terms

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