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← GeographyWhich outcome occurs when a glacial outburst flood encounters a flat plain composed of thick loess deposits?
A)Fine sediment is rapidly sorted✓
B)Permafrost layer is permanently stabilized
C)Increased saltation of larger sediments
D)Oxbow lake formation is dramatically accelerated
💡 Explanation
A glacial outburst flood deposits fine sediment because hydraulic sorting occurs; the rapidly moving water separates particles by size facilitating efficient and rapid sediment grading according to density rather than differential soil support, therefore graded sediment is deposited, rather than stabilized permafrost.
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