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Collapsed ice-walled lakebed
| Глоссарий геологических терминов |
A lakebed that formed in a lake bounded by stagnant ice, but floored by solid ground, usually till. collapse features are limited to the lakebed margins. presently, these materials and sedimentary structures generally occur as roughly circular-shaped hills of till capped by lacustrine sediments, generally at elevations higher than surrounding disintegration moraine. compare - collapsed ice-floored lakebed, collapsed lake plain. sw & cf
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Sedimentary, английский
Lacustrine, английский
Belonging or referring to a lake.
Surrounding, английский
Disintegration, английский
- Of concrete or the like, the deterioration into small fragments or particles.
- Разрушение; дробление, измельчение; распад; расслоение
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Collapsed lake plain, английский
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
Collapsed ice-floored lakebed, английский
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 sediments cap present-day topographic highs and generally lie at elevations higher than the surrounding disintegration moraine. compare - collapsed lake plain, collapsed ice-walled lakebed. sw & cf
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