Which geological outcome is directly amplified during plate subduction?

💡 Explanation

During subduction, water released from the subducting plate lowers the mantle melting point at depth, which then generates magma with higher silica, therefore increasing andesitic magma viscosity, rather than basaltic, because the hydrous melting effect predominates over decompression melting.

• Which outcome of glacial rebound causes crustal earthquakes?
• Which risk increases when a river's sinuosity nears cut-off?
• Which geological outcome is accelerated when sediment accumulates near subduction zones?
• Which effect determines the direction ocean currents are deflected relative to wind direction?
• Which outcome sharply increases when newly formed volcanic islands experience high rainfall?
• Which outcome occurs when a river levee is rapidly saturated during an extreme flood event exceeding design capacity?