Which outcome is driven by density stratification during subduction?

💡 Explanation

Mantle wedge magma generation results from volatile release during subduction; the downgoing plate releases fluids, reducing the mantle's melting point. This is Slab-derived dehydration melting because the addition of water lowers solidus. Therefore the mantle melts rather than remaining solid.

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• Which mechanism initiates the eutrophication process in freshwater lakes experiencing agricultural runoff?
• Which outcome increases rates of erosion in cirques?
• Which risk increases when a hydroelectric dam is built across a transform fault?
• Which mechanism primarily governs sediment deposition patterns in the deepest sections of fjord environments?