Autogenic entrenchment patterns and terraces due to coupling with lateral erosion in incising alluvial channels

  title={Autogenic entrenchment patterns and terraces due to coupling with lateral erosion in incising alluvial channels},
  author={Luca C. Malatesta and Jeffrey P. Prancevic and Jean-Philippe Avouac},
The abandonment of terraces in incising alluvial rivers can be used to infer tectonic and climatic histories. A river incising into alluvium erodes both vertically and laterally as it abandons fill-cut terraces. We argue that the input of sediment from the valley walls during entrenchment can alter the incision dynamics of a stream by promoting vertical incision over lateral erosion. Using a numerical model, we investigate how valley wall feedbacks may affect incision rates and terrace… CONTINUE READING
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