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lukeiscool
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tgwktm
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(Original post by lukeiscool)
How Is a ria formed
How Is a ria formed
Submergant features
Rias
· Drowned river valleys. Fluvial erosion creates deep river valleys, flooded by rising sea levels. Flooding of main river valley and tributaries e.g. river Fal.
· After ice sheets melted, wide valleys flooded forming wide, tidal, sediment rich river mouths such as the Thames estuary.
· In hilly areas, such as in Cornwall, rias formed. Lower sections of the river valley flooded as sea level rose and picked out a pattern of former tributaries forming a tidal inlet.
· Rias become deeper as they enter the sea. Falmouth is built on the mouth of a ria, the river Fal that extends 18km inland.
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