Durdle Door - CS Flashcards
1
Q
What + geology (2)
A
Natural sea arch
Resistant Portland and Purbeck Limestone
2
Q
Type of coast
A
Concordant
3
Q
What is the rock privy to (3)
A
Wave attack on both sides = arch
The crumpling of the sediment layers can be seen = faults + cracks
Leaves the rock susceptible to weathering processes and rockfalls
4
Q
Overtime what (2)
A
Arch will widen = wave attack at base and roof will weaken due to sub-aerial processes
Eventually roof will collapse = sea stack
