Which erosional feature results from differential freeze-thaw weathering within a glacial cirque headwall?

💡 Explanation

When differential freeze-thaw weathering affects a cirque headwall, shattering occurs because ice lens expansion dislodges fractured rock, forming a bergschrund. Therefore the bergschrund is produced, rather than eskers, rock polygons, or loess which require fluvial or aeolian processes.

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