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L5 Distictive Coastal Deposition Features
1. Coastal Deposition Key idea: Distinctive landforms result from different processes. NT page 154 – 155 CGP pg 67
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4. Beach : a zone of deposited sand and shingle above the low water mark Processes : Constructive waves Destructive waves Deposition Transportation Longshore drift Sediment grading Words to use: storm beach gradient sand shingle swash backwash
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8. The Formation of a Spit The processes of long shore drift and deposition combine to form coastal spits.
10. Spurn Head Spurn Head Spit is a example of a spit on the east coast near Hull.
11. Spit : a long, narrow accumulation of sand or shingle formed by longshore drift with one end attached to the land Examples: Dawlish Warren (below),Spurn Head, Orford Ness, Blakeney Point Processes: Longshore drift Transportation Deposition Words to use: Hooked end Direction of longshore drift Prevailing winds Change in coastline direction/estuary Second dominant wind direction beach Stabilised shingle and sand saltmarsh dunes Zig zag movement Silt and mud accumulates
14. Bar and lagoon: a spit linking two headlands and trapping water on the landward side such as at Slapton Ley in Devon (below) Processes: Longshore drift Transportation Deposition Words to use: bay headland bar lagoon brackish silting and infilling beach Direction of longshore drift
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