1) Geological process
Found on
https://www.crosswordclues.com/clue/downcutting
Downcutting, also called erosional downcutting, downward erosion or vertical erosion is a geological process that deepens the channel of a stream or valley by removing material from the stream`s bed or the valley`s floor. The speed of downcutting depends on the stream`s base level, the lowest point to which the stream can erode. Sea level is th......
Found on
http://en.wikipedia.org/wiki/Downcutting
No exact match found.
