Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← GeographyWhich crustal deformation arises when a descending plate encounters increased mantle resistance?
A)Accretionary wedge formation✓
B)Oceanic fracture zone creation
C)Submarine canyon development
D)Abyssal plain subsidence
💡 Explanation
Accretionary wedge formation occurs because sediment accumulates on the overriding plate through offscraping during subduction; this deformation increases significantly when the descending plate encounters greater resistance. Therefore, an accretionary wedge forms, rather than features associated with faulting or erosion.
🏆 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 →- What chemical weathering byproduct accumulates when dissolved bedrock's buffering capacity diminishes?
- Which volcanic feature forms when magma cools rapidly in a volcanic pipe?
- Which outcome is exacerbated when groundwater pressure increases within fault zones?
- Which outcome occurs when increased glacial meltwater enters subglacial stream systems in Greenland?
- Which mechanism causes meandering stream formation across flat plains undergoing regional uplift?
- Which outcome occurs when glacial sediment blocks a valley, trapping meltwater?
