Holderness And Processes Flashcards
What type of mass movement occurs in holderness?
Slumping
Rock falls
Why does mass movement occur ?
Due to weak boulder clay cliff
Easily eroded by sea itself and sub aerial processes
Why is erosion / mass movement of chalk cliffs bad?
As much of it is dissolved in solution meaning no sediment to be deposited.
Why is holderness so easily eroded ?
Long fetch
Weak bolder clay cliffs
Destructive waves
Prevailing wind Ne
All combine to promote erosion
Climate change causing thermal expansion meaning eustatic rise in sea level and also more story conditions so more erosion.
What features does erosion form on coastline?
Cave
Arch
Stack
Stump
Bay/ headlands
Blowholes
What landforms does weathering contribute to ?
Cave - creates joint
Arch - ftw
How to mass movement and erosion combine to form cliff erosion ?
Soft boulder clay cliffs become saturated with rain water.
Steep cliff fails with excessive lubrication and landslide / slump takes place.
Fallen debris on cliff.
Storm waves remove debris via erosion like abrasion and cliff steepens and cycle begins again
How much are cliffs eroded every year ?
1.5 to 2m every year
What is flamborough head made of ?
Chalk
Dissolves in solution
How much has Bridlington bay retreated?
Up to 5km since Roman times accounting for loss of settlements
When was weak rock deposited ?
12,000 years ago by glaciers
What features present in flamboriygh ?
Caves
Arches
Stacks
Headland
Why is mapplton in danger ?
Main road 50m from cliff edge
Processes / features / issues occurring in flamborough
Process;
Erosion
Ftw
Solution
Features;
Chalk
Headland/arch/stack/stump/
Issues;
Rock falls
Processes / features / issues occurring in Bridlington
Processes; Slumping Erosion Retreat LSD
Features;
Boulder clay
Bay
Issues;
Erosion
