If a stream-cut canyon is deep and narrow,which of the following is most likely to be true?
A)Rocks in the canyon walls are relatively hard and easy to erode.
B)The stream is probably close to its base level.
C)Downcutting is occurring faster than widening.
D)The stream contains mostly small clasts,such as silt.

Question

Quizplus · Accepted Answer

A deep and narrow canyon suggests that downcutting is occurring faster than widening, meaning that the stream is eroding vertically rather than laterally. This process creates a V-shaped canyon with steep walls. The hardness of the rocks in the canyon walls and the size of the clasts in the stream are not necessarily related to the shape of the canyon. The stream being close to its base level would result in a wider, flatter valley rather than a narrow canyon.

If a Stream-Cut Canyon Is Deep and Narrow,which of the Following