How can surface water move weathered materials?

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Nov 24, 2016


Usually by rivers.


Detritus, which is the remnant of erosion, may slide down a mountain slope, but usually does not go very far. The only way it can move for hundreds or thousands of kilometres is when transported by rivers.

That is the reason why, unless there are strong marine currents at the estuary, rivers form huge deltas accumulating whatever materials they have acquired in their course.

Think of the Grand Cañon, it was excavated in all its magnitude by the Colorado River.
The Colorado not only dug out the valley, it also transported the detritus all the way to the Gulf of California.

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