Mapping Vegetation on the Copper River Delta Placer River ...
Delta. Where can you find delta? Mouth of river What is a delta? A flat depositional plain formed at...
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Transcript of Delta. Where can you find delta? Mouth of river What is a delta? A flat depositional plain formed at...
Discussion What are the uses of delta to man?
Explain your answer. Quote examples.
What are the favourable conditions for the formation of delta? (Think in terms of the river characteristics and the coastal environment……)
Conditions favouring the formation of delta
Characteristics of the river
River carries a large load There are few or no lakes along the
river
Characteristics of the coastal environment
Sheltered bay Weak tides and waves Removal of sediment is slower than
deposition Gentle offshore slope Shallow sea Presence of vegetation
Formation of delta When a river bring down a large
amount of sediment River reaches the sea, it slows down Particles group into larger and
heavier particles (flocculation process)
When sediment is deposited faster than it can be removed, delta is formed