This can affect the amount of movement that is made by the glacier by a large percentage especially if the slope on which it lies is low. The traction caused by this sediment can halt a steadily moving glacier if it interferes with the underlying sediment or water that was helping to carry it.
Sediment deposition on a glacier's path can significantly slow down its movement, especially on gentle slopes. This is because the sediment can interfere with the glacier's ability to move smoothly over the surface by disrupting the underlying material and water that were previously supporting its flow.