Which outcome results alongside island arc formation due to subduction?

💡 Explanation

Mantle wedge metasomatism increases partial melting above the subducting slab, because the addition of water and other volatiles lowers the mantle's solidus; therefore, increased volcanism and arc formation, rather than suppressed activity, follows due to flux melting.

• Which risk increases when rainfall reduces loess infiltration?
• Which long-term ecological change accelerates during a barrier island breaching event?
• Which outcome results when impermeable artificial groynes interrupt longshore drift?
• Which outcome results when significant tephra deposition reduces stream capacity?
• Which mechanism inhibits stream formation downstream when continental ice sheets melt?
• Which outcome results when an atmospheric blocking pattern stagnates above major stream confluences?