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← GeographyWhich outcome occurs when differential stress initiates hydration during subduction?
A)Reduced mantle wedge melting point✓
B)Increased exhumation of eclogites
C)Enhanced development of lithospheric thinning
D)Promoted formation of sedimentary basins
💡 Explanation
Hydration leads to serpentinization, lowering the mantle wedge's melting point via flux melting, facilitating magma generation because water acts as a flux. Therefore, partial melting occurs rather than direct eclogite exhumation, lithospheric thinning, or basin formation, which result from different mechanisms.
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