Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← GeographyWhich outcome results from crustal flow obstruction during subduction?
A)Formation of an accretionary wedge✓
B)Increased mantle plume upwelling
C)Decreased volcanic arc activity
D)Enhanced fault creep deformation
💡 Explanation
An accretionary wedge forms due to sediment and crustal material scraping off the subducting plate and accumulating, because crustal flow is obstructed; this creates a build-up of material scraped from the subducting plate, therefore forming an accretionary wedge rather than other outcomes associated with mantle dynamics.
🏆 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 outcome occurs when housing development disrupts sediment supply to barrier islands?
- Which landform primarily results from nivation processes eroding a mountainside to create a bowl-shaped depression?
- Which effect results from crustal dilation near fault lines?
- Which outcome occurs when excessive stress accumulates along a transform plate boundary?
- Which landscape outcome occurs with intensified arid region winds?
- Which mechanism causes a meandering stream to erode one bank while depositing sediment on the opposite bank?
