landforms of coastal deposition

Question 1

landforms of coastal deposition

Answer 1

occurs on coastlines where sand and shingle accumulate at a faster rate than they are removed from the coastline
low energy waves
rapid coastal erosion provides supply of material

Question 2

spits

Answer 2

formed where coast suddenly changes direction and LSD deposits material in a sheltered area, usually behind a headland within a bay
e.g. spurn head, humber estuary

Question 3

formation of spits

Answer 3

• material moves in direction of prevailing wind along coast through LSD
• change in shape of coastline causes deposition
• material is deposited and builds up forming a spit
• large volumes of sediment deposited helps spit form
• change in prevailing wind causes spit to curve (recurved spit)
• behind spit is a sheltered area where salt marsh forms

Question 4

bar

Answer 4

spit connects between two headlands blocking off a bay
e.g. slapton ley, devon

Question 5

tombolo

Answer 5

spit connects from a headland to an island
e.g. angel road in Japan

Question 6

salt marshes

Answer 6

low energy environments, shelter from wind or waves
shelter is often provided by depositional landforms (spits)
often formed on tidal flats
input of sediment is greater than the output
coastal accretion evaluates the tidal flat
halophytic plants grow due to saline conditions
= HALOSERE SUCCESSION CAUSES SALT MARSHES TO GROW

Question 7

sand dune succession

Answer 7

large quantity of sand, large tidal range and onshore prevailing winds
sand is trapped at back of beach causes embryo dunes to develop, pioneer plants hold sand together and stabilise dune
plant succession allows dune to develop

Question 8

halosere succession

Answer 8

primary succession = uninterrupted development from first colonisation to climax vegetation
secondary succession = succession takes place over natural conditions
climatic climax = trees are able to colonise the area