Which long-term outcome results when river avulsion redirects flow?

💡 Explanation

Oxbow lakes form via channel abandonment by river avulsion redirecting the primary fluvial pathway; meander cutoffs initiate **sediment deposition** across the former bend. Therefore, an oxbow lake progressively isolates and slowly infills, rather than experiencing bed incision, because active flow bypasses abandonment.

• Which geologic outcome develops due to levee failure?
• Which risk increases when tectonic uplift obstructs glacial meltwater flow?
• Which process accelerates glacial retreat and fjord deepening when warm ocean water intrudes into a fjord system?
• Which outcome results from crustal flow obstruction during subduction?
• Which outcome is least likely as deposition shifts laterally on an alluvial fan constrained by uplift?
• Which landscape change results from compromised longshore drift mechanics?