Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← GeographyWhich outcome occurs when increased sediment loading affects marine trench subduction zones?
A)Enhanced mechanical abrasion of forearc ridges
B)Increased seismicity due to fluid pressure
C)Reduced mantle wedge melting rates✓
D)Decreased volcanic arc eruption frequency
💡 Explanation
Mantle wedge melting decreases because subducted sediment reduces melt-generation efficiency. Introduction changes the volatile and thermal fluxes; therefore melt production declines, rather than causing increased melting caused by other factors.
🏆 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 risk increases for settlements immediately behind artificial levees?
- Which horizon characteristic indicates accelerated pedogenesis due to deciduous forest cover?
- Which process primarily regulates water temperature within an ocean gyre's core?
- Which outcome frequently destabilizes surrounding regions because of volcanism within volcanic arcs?
- Which outcome occurs when seasonally thawed active layer over permafrost experiences saturation on a moderate slope?
- Which primary volcanic outcome from coastal subduction increases tsunami risk?
