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← GeographyWhich glacial outcome results from freeze-thaw weathering expanding cirques?
A)Increased pressure due to plastic flow
B)Formation of a tarn lake✓
C)Crevasse formation in the glacier
D)Erosion of lateral rock escarpments
💡 Explanation
Freeze-thaw action enlarges and deepens the cirque, creating a bedrock depression due to nivation. Meltwater then accumulates. This deepening results in a tarn lake at the base of the cirque, therefore a lake forms, rather than increased pressure within the ice.
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