Incised Meanders
If the slope of an established meandering stream is suddenly increased, it will resume downward erosion – this happens when the base level of the stream is reduced, for example due to tectonic uplift of the region, a global fall in sea-level, collapse of a moraine-dammed lake downstream, or by capture of the stream by a steeper one. As the stream erodes downwards, its established meandering pattern will remain as a deep valley known as an incised meander or entrenched meander. Rivers in the Colorado Plateau and streams in the Ozark Plateau are noted for these incised meanders.
Read more about this topic: Meander, Associated Landforms, Deposits