Match each geomorphic landform developed through fluvial or groundwater action with its precise evolutionary process.
- Blind ValleyTermination of a surface stream channel abruptly at a swallow hole, leaving a dry valley downstream bounded by a wall.
- PoljeFormation of an expansive, flat-floored depression in limestone through combined tectonic faulting and extensive solution collapse.
- PotholesCylindrical bed depressions carved in upper river courses by swirling eddy currents executing mechanical abrasion with trapped pebbles.
- Oxbow LakeSealing of an abandoned meander loop by river silt deposition following high-discharge neck chute cut-offs.
Cevap
Blind Valley matches with abrupt river termination at a swallow hole; Polje matches with expansive solutional-tectonic depression; Potholes match with cylindrical bed grinding by eddy currents; Oxbow Lake matches with meander cut-off and depositional sealing.
Each feature is correctly matched with its specific geomorphic evolution mechanism: Blind Valley with river capture into sinkholes, Polje with large-scale structural limestone dissolution, Potholes with fluvial eddy-current corrasion, and Oxbow Lake with flood stage meander cut-off and deposition.
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Anahtar Kavram
Classification of Fluvial and Karst Geomorphic Processes and Landforms