Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← GeographyWhich mechanism initiates desert pavement formation within an alluvial fan environment?
A)Cryoturbation sorting during freeze-thaw cycles
B)Deflation sorting by wind action over time✓
C)Dissolution of exposed calcrete layers
D)Chemical weathering creating resistant clasts
💡 Explanation
When fine sediment is removed, deflation sorting occurs because wind action selectively transports smaller particles (e.g., silt, clay), leaving behind larger, more resistant rocks and pebbles that interlock to form desert pavement. Therefore deflation is the initiating mechanisim; cryoturbation, dissolution, or resistance do not primarily dictate this sedimentary process.
🏆 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 seasonally thawed active layer over permafrost experiences saturation on a moderate slope?
- Which outcome occurs during a volcanic eruption where pyroclastic density currents encounter a body of water?
- Which geologic outcome occurs when a transform fault offsets a mid-ocean ridge?
- Which consequence results when strong pressure gradients interact with the Coriolis effect in the upper troposphere?
- Which mechanism causes cyclonic rotation in low-pressure weather systems in the Northern Hemisphere?
- Which mechanism causes the offset of river channels along strike-slip transform plate boundaries?
