Slides in this set
4 Sub-Aerial Processes
6 Coastal Erosion
8 Coastal Transportation
9 Coastal Deposition
10 Coastal Flooding
11 Coastal Management
14 Salt Marshes
Land Based Processes:
Weathering - the weakening of rock surfaces.
Physical / Mechanical (Freeze-Thaw = Cold! &
Onion Skin / Exfoliation = Hot!)
Biological (plants, sea-life etc.)
Chemical (acidity, salt etc.)
Mass-Movement - the downhill movement of
material due to gravity.
Rockfall - fragments of rock break away from cliff
face, often due to physical / mechanical
Landslide - blocks of rock slide downhill.
Mudflow - saturated soil / weak rock flows down a
Rotational Slip - saturated soil / weak rock `slumps'
along a curved surface.
There are two types of waves:
Constructive (Depositional) Destructive (Eroding)
Breaks Gently `Lash' The Cliff
Calm Weather Stormy Weather
The direction of the waves is influenced by
In the UK, the prevailing wind is south-westerly.
The size is influenced by wind strength and
The coastline is weakened by sub-aerial
weathering processes and is eroded by
the four types of erosion.
This results in:
Headlands & Bays - where alternating bands
of rock exist: