Which process causes silicic magma formation above subducting plates?

💡 Explanation

Flux melting occurs because water released from the subducting slab lowers the melting point of the mantle wedge above. This favors magma formation, therefore, mantle wedge melting is correct rather than other mechanisms which do not account for hydration.

• Which mechanism causes alluvial fan formation commonly observed in arid intermontane basins?
• Which mechanism exacerbates flood risk when constructing buildings within an alluvial fan?
• Which outcome occurs when tectonic plate subduction ceases?
• Which mechanical consequence results when intense bioturbation disrupts weathering?
• Which outcome results when nearshore bathymetry obstructs coastal upwelling?
• Which process causes the formation of a volcanic island arc along a subduction zone?