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← GeographyWhich mechanism initiates lake formation following glacial retreat in mountainous regions?
A)Isostatic rebound causing basin subsidience
B)Differential erosion creating bedrock depressions
C)Moraine deposition damming meltwater streams✓
D)Volcanic activity forming caldera depressions
💡 Explanation
Following glacial retreat, moraine deposition occurs as glaciers deposit unsorted sediments, forming natural dams across meltwater streams, leading to water accumulation behind these dams. Therefore, moraine damming causes lake formation rather than isostatic rebound, erosion, or volcanic activity which require distinct geological settings.
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