bays and headlands

Question 1

what factors influence coastal landforms?

Answer 1

rock type;
•some rocks are more resistant to erosion than others like chalk and limestone
•softer rocks like clay and sands are more easily eroded forming bays
•mass movement varies
and geological structure;
•how rock lays are folded or tilted
•whether they have lots of joints and faults which allow them to erode quicker
•there are concordant and discordant coastlines that create specific landforms

Question 2

what is a discordant coastline?

Answer 2

where bands of different rock type run perpendicular to the coastline.

Question 3

what is a concordant coastline?

Answer 3

where the rock bands run parallel to the coast.

Question 4

how are headlands and bays formed?

Answer 4

•formed on a discordant coast, destructive waves erode the coast through abrasion
•differential erosion occurs, soft rock erodes faster creating bays
•hard rock erodes slower and remains jutting out creating headlands

Question 5

dorset coastline, swanage

Answer 5

swanage is situated on a discordant coastline

Question 6

how can erosional landforms be created along the coast? (repeated question)

Answer 6

•headlands and bays form on a discordant coastline (bands of hard and soft rock)
•destructive waves erode the coastline through processes like abrasion
•due to differential erosion, the soft rock erodes at a faster rate creating bays
•the harder rock erodes more slowly and so is just let jutting out to sea as headlands