Final answer:
Sediments transported by the Genesee River become smaller and rounder as they travel, indicating the distance from their source rock. Sediment grain size and shape serve as indicators of the sediment's history, highlighting travel distance. The widening of river channels and increased sedimentation as rivers move away from the source contribute to sediment changes.
Explanation:
Sediments that are transported by the Genesee River generally become smaller and rounder as they travel farther from their source rock due to transportation and abrasion by wind, water, or ice.
The size and shape of sediment grains are indicators of the sediment's history, with well-rounded and well-sorted grains signifying longer travel distance, while angular and poorly sorted grains indicate proximity to the source.
As a river or stream flows away from the source, the width of the channel widens, the current slows down, and more sedimentation occurs.
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