Case Studies - Depositional Landforms Flashcards
What case study do we use for a bar in the UK?
Slapton Sands Bar, Devon.
How long and wide is Slapton Bar?
Roughly 100-150m wide and 4km long.
What is Slapton Bar made from?
It is formed from shingle, mostly flint, transported from off shore deposits.
The local rock, slate, is easily eroded and so very little is seen on the bar.
How old is Slapton Bar?
Dating of the sediments in the lagoon behind it suggest it is around 3,000 years old.
Where is Dawlish Warren located?
It protrudes from into the mouth of the River Exe on the South Coast of Devon.
What has been done in Dawlish Warren as tourism is high in the area?
Many buildings have tried to be protected using defences like groynes, rock armour, gabions and breakwaters.
What problems does Dawlish Warren spit face?
Less erosion upstream meaning less sediment for the beach.
Longshore drift restricted by the construction of defences.
Less constructive waves than in the past.
Why do people want to protect Dawlish Warren spit?
It is a valuable habitat for many species.
It is highly popular with tourists so helps boost the economy.
The spit protects other low-lying areas from flooding.
How big is Dawlish Warren spit?
1.5 miles long and 0.5 miles wide on average.
