Lagoon, created by the low-energy tidal environment behind the spit, Tidal gap – between the two spits, which have formed in different directions. Water moving through/back prevents the two spits meeting. , Wave refraction – created by the island which is now connected to the mainland. The consequent low energy environment promotes sediment deposition., Direction – either because of two dominant winds, so the spit creates wave refraction causing deposition in a different direction. , Very flat. Origin of beach material – either from the headland, or rolled inland as sea-level has risen., Ridges created by high-tide (the highest points that swash deposit beach material), Ridges of sand or shingle running parallel to the coast in an offshore zone. Form from sediment eroded by destructive waves and carried seawards by backwash. ,

Year 12 Coasts 3.4 How has sediment transport been distinctive?

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