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← GeographyWhich outcome occurs when rapid isostatic rebound exposes coastal alluvial deposits after deglaciation?
A)Increased soil cryoturbation and frost heave✓
B)Widespread coastal plain isostatic subsidence
C)Significant aeolian dune ridge formation
D)Intensified chemical weathering via oxidation
💡 Explanation
Increased soil cryoturbation and frost heave will occur via freeze-thaw weathering, because isostatic rebound exposes previously protected alluvial silts to periglacial climate conditions. Therefore, silts become more physically weathered, rather than experiencing subsidence or aeolian processes.
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