Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← GeographyWhich outcome results from plate subduction along continental margins?
A)Andesitic volcanic arc formation✓
B)Rift valley widening
C)Extensive sandstone deposition
D)Shield volcano development
💡 Explanation
Andesitic volcanic arc formation results from flux melting. Water released during subduction lowers the mantle's melting point, which then generates magma that rises to form a volcanic arc because the hydrated minerals destabilize at depth, rather than causing rifting.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Geography →- Which topographic consequence results when regions experience long-term permafrost thaw?
- Which mineral precipitation change accelerates speleothem (stalactite) elongation?
- Which increased process alters cave stalactite δ18O ratios?
- Which landscape change accelerates when permafrost thaw increases earthworm bioturbation?
- In wetlands, which outcome from iron oxidation accelerating?
- Which outcome results from excess water saturation within permafrost soil?