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← GeographyWhich outcome primarily occurs from long-term sediment displacement into a glacial lake?
A)Formation of varved lake sediments✓
B)Increased lake water salinity
C)Development of thermohaline circulation
D)Elevation of lake water temperature
💡 Explanation
When sediment accumulates in glacial lakes, rhythmical layering develops because seasonal variations in sediment deposition create alternating coarse and fine layers. Therefore varved lake sediment forms, rather than salinity increase, thermohaline circulation, or warming, which require different climate and hydrological conditions.
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