A knickzone is a section of a river or stream where there is a sharp change in slope, often leading to increased erosion and sediment transport. Knickzones can be caused by tectonic uplift, changes in base level, or variations in rock resistance. They are significant in the study of river dynamics and landscape evolution.
Reference: Whipple, K. X. (2001). “Fluvial Landscape Response Time: How Plausible Is Steady-State Denudation?” American Journal of Science, 301(4-5), 313-325.