Dorset coast: concordant and discordant Flashcards
1
Q
the ……………….section (………….Cove) of Dorset’s coastline is concordant
A
south western section (Lulworth Cove)
2
Q
concordant coastlines are where the different layers of rock run………………to the sea
A
parallel
3
Q
discordant coastlines are where the different layers of rock run………………….to the sea
A
perpendicular
4
Q
Lulworth formed because
A
- the first layer of rock to the sea is well-jointed limestone, meaning there are lines of weakness
- these lines of weakness have been exploited by the sea to pass to the softer rock behind and create a cove
- differential erosion means the softer clay behind the limestone is more quickly eroded, forming the cove
5
Q
on the eastern section of Dorset coast, the coastline is…….cordant
A
discordant
6
Q
features of discordant coastlines include: 2 items
A
- bays and headlands (Swanage Bay)
- cave, arches, stacks and stumps
7
Q
the bands of soft rock on the discordant section of dorset are made up of:
A
- sands and gravel
- clays
8
Q
the bands of hard rock on the discordant section of dorset are made up of:
A
- chalk
- limestone
