Meander Formation
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Meanders form through the process of helicoidal flow. At bends in the river, centripetal force throws water towards the outer bank, eroding and undercutting it. Slower flow on the inside of bends leads to deposition and the formation of point bars. Helicoidal flow causes eroded material to be deposited downstream in the next meander loop, furthering the meandering shape over time as the river seeks the most efficient path.
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