Asked by Gisèle Mouawad on May 17, 2024
Verified
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 so 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
Stream-Cut Canyon
A deep valley formed through the prolonged action of a stream cutting through the terrain, often displaying steep sides.
Downcutting
A process by which a stream or river erodes its bed, deepening it over time, often leading to the formation of canyons or valleys.
- Explain the concepts of base level, meander migration, and sediment transport in streams.
Verified Answer
BA
Bader AlhouliMay 18, 2024
Final Answer :
C
Explanation :
Downcutting occurs faster than widening in the formation of a deep and narrow canyon, indicating that the stream is eroding its bed more quickly than it is eroding its banks. This process leads to the characteristic steep and narrow walls of a stream-cut canyon.
Learning Objectives
- Explain the concepts of base level, meander migration, and sediment transport in streams.