What could cause a canyon to be deeper upstream than downstream?
A)the area upstream could be uplifted more than areas downstream
B)the area upstream is higher above base level and so results in deep erosion
C)a steeper gradient allows more erosion upstream
D)all of these

Question

What could cause a canyon to be deeper upstream than downstream? 
A)the area upstream could be uplifted more than areas downstream 
B)the area upstream is higher above base level and so results in deep erosion 
C)a steeper gradient allows more erosion upstream 
D)all of these

Quizplus · Accepted Answer

All of these factors could contribute to a canyon being deeper upstream than downstream. If the area upstream is uplifted more than downstream, it could result in deeper erosion. If the area upstream is higher above base level, it could also result in deeper erosion due to the steeper gradient. A steeper gradient upstream could also allow for more erosion, resulting in a deeper canyon.

What Could Cause a Canyon to Be Deeper Upstream Than