Headlands and bays + Cave arch slump stack sequence

Question 1

What are the 2 types of coast?

Answer 1

Discordant and Concordant

Question 2

What is a concordant coast

Answer 2

Concordant coastline occurs where beds, or layers, of differing rock types are folded into ridges that run parallel to the coast. The outer hard rock provides a protective barrier to erosion of the softer rocks further inland

Question 3

What is a discordant coast

Answer 3

A discordant coastline occurs where bands of different rock type run perpendicular to the coast. The differing resistance to erosion leads to the formation of headlands and bays

Question 4

Cave, arch, stack, stump sequence step 1

Answer 4

Marine erosion processes create sea caves along a line of weakness

Question 5

Cave, arch, stack, stump sequence step 2

Answer 5

Further erosion results in caves either sides of a small headland which eventually meet to form an arch.

Question 6

Cave, arch, stack, stump sequence step 3

Answer 6

Overtime the arch becomes unstable and collapses leaving an isolated pillar of rock (A stack)

Question 7

Cave, arch, stack, stump sequence step 4

Answer 7

Erosion processes attack the stack causing it to collapse, leaving a short section (A stump)