Saltburn to Flamborough Head : high energy Flashcards
Where is the coastline located?
North Yorkshire
How long is the coastline?
60km
How high are the adjacent North York Moors?
400m above sea level
What is the composition of the Moors?
Sandstone, shale and limestone - formed in the Jurassic period
What is the geology of Flamborough Head?
- Chalk headland
- Cliffs topped with glacial till
What is the wave direction?
North and North East
What is the fetch of the waves?
> 1500km
In what direction does LSD take place?
North to South
What is the erosion rate of weak shale and clay?
0.6m per year
What is the erosion rate of resistant sandstone and limestone?
<0.1m per year
What are the average wave heights at Whitby Bay?
> 4m
Which sediment cell is the coastline located within?
1d
What is origin of the coastal sediment?
- Cliff erosion
- Offshore sediment, driven onshore after the last ice age
- Small fluvial deposition from the River Esk
Why is fluvial deposition limited?
Construction of weirs and reinforced banks
How much sediment was input between 2008-2011?
9245m³, relatively large due to Winter storms
What is the placement of sedimentary rock?
Horizontally bedded, creating a vertical and steep cliff profile
What are the cliffs at Flamborough Head composed of?
Resistant chalk, with strong mineral bonds
How tall are the cliffs?
20-30m
What angle are cliffs lowered to? Why?
40° due to mass movement of glacial till
What coastal landscape feature can be found at Robin Hood’s Bay?
- Shore platform
- Slope ranges from 1° to 15°
- 500m wide
What coastal landscape features may be found at Selwick’s Bay?
- Caves and arches in the chalk
- Stack at Green Stack’s Pinnacle
- > 50 gets
- Blowholes
Where may beaches be found along the coastline?
Sheltered, low energy environments (e.g. Filey Bay)
What prevents spits from forming by LSD?
High tidal range→3-6m
How does the rock strata alternate?
Discordantly
What two locations contain bays and headlands along the coastline?
Robin Hood’s Bay→Weak shale bay; resistant sandstone headlands
Flamborough Head→Resistant chalk headland; weak clay bays either side
