LiviB
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#1
Report Thread starter 3 years ago
#1
Last minute cramming for geo tomorrow )
Thanks xxx
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username2088165
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#2
Report 3 years ago
#2
This is my understanding

Periglacial loess originates as sediment deposited by braided rivers during periods of glacial ablation. When the climate becomes drier, the glacial streams dry up and the deposited sediment becomes subaerially exposed. As the wind blows across the outwash plain, the process of winnowing occurs, i.e. the smallest sediment (clay and silt-sized particles) are transported away, leaving the coarser material behind. The clay and silt are transported by the wind and redeposited as a fine-grained layer of loess (sediment which comprises predominantly silt-sized grains)
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