Emergent features: Isle of Arran

Question 1

the 3 types of emergent features are:

they are formed in general because of

Answer 1

• raised beaches
• relict cliffs
• marine platform

-form because of eustatic fall and/or isostatic rise

Question 2

eustatic fall is when

Answer 2

the sea level fall due to the increased formation of ice caps

Question 3

isostatic rise is when

Answer 3

the melting of ice caps leads to the rise of the land beneath, like a sponge after weight is removed

Question 4

raised beaches formed on the Isle of Arran by:

Answer 4

• eustatic fall led to an area of wave cut platforms to become exposed
• the removal of glaciers also means the land has risen (isostatic rise) by an estimated 8-30m

Question 5

relict cliffs formed on the Isle of Arran by:

Answer 5

• eustatic fall has moved the new coastline seaward, so the old cliff is no longer in contact with the sea, and has been ‘left’ behind by the falling sea levels
• isostatic rise in the area also meant that, 10,000 years ago, when the last ice age ended, these relict cliffs formed from the rising land

Question 6

marine platforms on the Isle of Arran formed by:

Answer 6

-when eustatic falls in different periods of time accompanied by isostatic rises create a terraced effect where a series of relict cliffs and raised beaches create ‘steps’ down the to the sea