Landforms of deposition
- Created by: Sharon
- Created on: 16-04-15 14:18
View mindmap
- Landforms of deposition
- Beaches
- Swash aligned - waves breaking parallel to shore
- Drift aligned - beach pro-grades to become parallel to max drift (LSD)
- Zeta - combination of both
- Berms
- At back of beach by strong spring high tide. Large boulders below set of ridges marking lower high tide = Berms
- Runnels &Cusps
- Material carried down beach, drain water off beach.
- Semi circular depressions. when swash and backwash strong, junction of shingle and sand.
- Spits
- narrow land one end on mainland rest to sea. LSD until break in coastline or shallow water. wave refracts = end curved. Sand and shingle
- Bars
- if spit develops with no strong water from landward side = sediment reach across other side
- Dunes
- accumulation of sand shaped by wind
- Embryo dunes - colonise grass growth upwards= stabalisation
- Growth up = Fore dunes - only reachable by storm tides.
- Dunes become fixed and organic layer develops. improved nutrients = more colonization
- Dune slacks develop (water table near surface) behind yellow and grey less sand
- Dunes become fixed and organic layer develops. improved nutrients = more colonization
- Growth up = Fore dunes - only reachable by storm tides.
- Salt Marshes
- Sheltered estuaries or behind spits. Silt and mud. Vegetation develops "Halosere"
- pioneers develop vegetation develops over mud slowing tides too.
- Beaches
Comments
No comments have yet been made