Which outcome results when sediment deposition obstructs a river delta distributary channel?

💡 Explanation

Channel avulsion occurs because the **sediment diversion** increases flow resistance, diverting streamflow into a steeper, unobstructed path; therefore, avulsion shifts the river course upstream, rather than only increasing deposition downstream or near the blockage.

• Which event develops when seismic moment concentrates near fault asperities?
• Which outcome commonly results when topographic features disrupt airflow?
• Which geologic process primarily scours and deepens a fjord's U-shaped valley profile?
• Which mechanism causes relatively shallow sill depths at the mouth of many fjords?
• Which risk increases when fluid injection lowers effective stress along a fault?
• Which geological process is accelerated when permafrost thaws beneath an Arctic tundra oil pipeline?