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← GeographyWhich morphological outcome arises during the transition when multiple cirques erode a mountain mass?
A)Formation of a pyramidal peak✓
B)Development of extensive floodplains
C)Creation of a braided river system
D)Deposition of a wide alluvial fan
💡 Explanation
When multiple cirques erode from different sides of a mountain, headwall retreat occurs because glacial processes carve amphitheater-like depressions into the mountain's upper reaches, converging to form a sharp summit. Therefore a pyramidal peak forms, rather than floodplains, braided rivers, or alluvial fans which are caused by fluvial rather than glacial processes.
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