Factors that affect plucking and abrasion

Question 1

hardness of bedrock

Answer 1

effective abrasion=resistant rock particles pass over weaker bedrock. if particles are soft=little erosion

Question 2

presence of debris in basal ice

Answer 2

pure ice can’t abrade solid rock. more debris=more erosion.

Question 3

velocity of glacier

Answer 3

faster flowing ice=more erosion. depends on gradient

Question 4

jointing in rock

Answer 4

well jointed=more easily plucked e.g the Burren in County Clare, Ireland

Question 5

ice thickness

Answer 5

greater thickness=greater vertical pressure exerted on paarticles=successful abrasion