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 landform evolution results when multiple cirques erode different sides of a mountain?
• Which outcome occurs when polar cells weaken disproportionately?
• Which outcome occurs when persistent offshore winds drive surface currents away from a coastline?
• Which outcome is favored along strike-slip faults exhibiting geometric complexity?
• Which atmospheric phenomenon results when the subtropical jet stream weakens poleward of Hadley cells during summer?
• Which effect results when lithospheric plates shift along a transform boundary?