Coasts case study high energy coastline- The Jurassic Coast Flashcards
1
Q
Where is the Jurassic coast located?
A
Southern coast of England
2
Q
Why is it high energy?
A
- Coast faces southwest, direction of prevailing winds
- Very long fetch
- large destructive swell waves
3
Q
What is the tidal range?
A
3m, so it is mesotidal
4
Q
What is the fetch length?
A
over 3100 miles
5
Q
How does the coast vary along the coastline?
A
Southern part of coast is concordant whilst to the East there is discordant coastline
6
Q
What is the geology of the concordant Southern part?
A
Resistant Portland limestone
7
Q
What are the consequences of the Portland limestone in the south?
A
- As it is very resistant, the coast is protected against erosion
- so the sea is only allowed to breach the cliffs in a few places
8
Q
What is the geology of the East?
A
Weaker clays and gravel
9
Q
What are the consequences of the clays and gravel in the east?
A
- weaker clays and gravel are eroded more easily/quickly
- producing large bays flanked by headlands
