Which outcome occurs when a significant amount of water is carried into the mantle by a subducting slab?

💡 Explanation

When water is subducted, flux melting occurs because water lowers the melting point of the mantle rocks, leading to magma generation at lower temperatures. Therefore, a decrease in the mantle melting temperature results, rather than elevated metamorphic grade, hydrothermal vent formation, or elevated geothermal gradient that occur via separate processes.

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