2.5 - Does The Coast Ever Stop Eroding Flashcards
5 Major Factors Likely To Affect A Coastline
Rock Type
Tides
Consolidation Of Rock
Gradient Of Slope
Sea-Level Change
Rock Type
Geology of the rock, is it soft rock or hard rock
TIdes
Wave energy (storm waves and swell waves)
TIdes
Wave energy (storm waves and swell waves)
Consolidation Of Rock
The impact any sub-aerial or marine processes have had on the rocks
Gradient Of Slope
Tectonics - is it a landward or seaward dip at high or low angle
Sea level change
Eustatic or isostatic fall or rise
Dunluce Coast Tectonics
Landward dip towards the castle only slightly but this makes it more stable
Dunluce Coast Geology
Igneous rock - Basalt rock
Dunluce Coast Sea-level
Isostatic sea-level fall due to isostatic rebound, as a result there is also vegetation on the slopes
Dunluce Coast Wave Energy
Constructive waves, given the shingle beach
Dunluce Coast Sub-Aerial Processes
Sediment at the bottom of the cliff due to sub-aerial processes. Seed germination reducing stability, molluscs eroding into rock, oxidation, seaweed acid.
Factors Make It More Secure
Landward Dip - Harder for wave cut notches
Igneous Rock - Increased resistance against sea erosion
Sediment And Large Rocks - Sediment absorbs wave energy before it reaches the cliff face.
Factors Increasing Vulnerability
Germinating Seeds
Isostatic SLR
Increasing Surface Area Of Coast
Biological Weathering
Big Rock In The Middle
Reduces wave energy
