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← GeographyWhich outcome is accelerated by increased saturation during subduction?
A)Mantle wedge melting increase✓
B)Trench sediment accumulation lessens
C)Slab dehydration reactions slow
D)Subduction zone magmatism stalls
💡 Explanation
Increased water saturation enhances mantle wedge melting because it lowers the mantle's solidus temperature via flux melting; therefore, more magma genesis occurs, rather than decreased melting associated with lower saturation.
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