high energy coastal environment- Saltburn to Flamborough head Flashcards
what is the geology of Flamborough coastline
-adjacent north York Moors rise up to 400m above sea level- mainly sandstone, shales and limestone.
-Flamborough head is a chalk headland- topped with till- glacial deposit
-the high cliffs, headlands and bays ( varied coastline) due to different rock resistance.
what is the wave energy like at Flamborough?
Saltburn is north facing so receives the highest inputs of wave energy.
rates of erosion differ due to wave energy also type of rock -clay 0.8m per year
-sandstone & limestone 0.1m
High energy also responsible for longshore drift, where headlands interrupt this, beaches are formed- Filey bay.
what are the beaches like on Flamborough coastline?
-few well developed coastlines eg Filey Bay
what are the headlands and bays like on Flamborough coastline?
the rock formation has led to a range of headlands and bays.
Flamborough head made of chalk with deep bays either side made of clay.
what are the main sediment sources and cells for the Flamborough coastline
coastline is sub-cell 1D of sediment cell 1 which extends from south Scotland to Flamborough.
sediment can be supplied through cliff erosion
what are the shore platforms like along the Flamborough coastline.
High wave energy and active erosion means cliffs retreat and leave behind rocky shore platforms
Robins hood bay 1-15 degrees sloping
what are the landforms like on headlands along the Flamborough coastline.
Wave energy is concentrated on resistant headlands- weaknesses like joints are exploited enlarging them to form caves and arches.
GREEN STACKS- example of stack after the roof of arch collapsed.
50 geos developed - where they meet faults blowholes have developed.
what are cliffs like along the Flamborough coastline
horizontally bedded- vertical cliff face- most have a layer of glacial till
Cliffs at Flamborough made of chalk and usually 20-30M.
