Formation of splits
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Sediment is carried by long-shore drift. When there is a change in the shape of the coastline, deposition occurs. A long thin ridge of material is deposited. This is the spit.  A hooked end can form if there is a change in wind direction.  Waves cannot get past a spit, therefore the water behind a spit is very sheltered. Silts are deposited here to form salt marshes or mud flats.

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