A river flowing through a region of horizontally bedded sedimentary rock cuts downward from a shale into a quartz sandstone after being rejuvenated by regional uplift.What difference would you see in the sediment load of the river?
A) increased rock fragment content
B) increased black sand content
C) increased quartz sand content
D) increased dissolved mineral (ion) content

Question

Quizplus · Accepted Answer

As the river cuts into the quartz sandstone, the sediment load will be dominated by the quartz sand from the rock. The shale may have had a more diverse sediment load, but since the river has cut into the sandstone it will predominantly transport quartz sand.

A River Flowing Through a Region of Horizontally Bedded Sedimentary