Which mechanism creates crevasse splays when floodwater overtops a natural levee along a river?

💡 Explanation

When floodwater overtops a levee, a crevasse forms, causing a sudden decrease in stream carrying capacity because flow rapidly decelerates upon entering the floodplain, leading to sediment deposition close to crevasse opening. Therefore, crevasse splays develop through sedimentation, rather than compaction, sinuosity increases, or isostatic rebound, which involve different long-term geological processes.

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