Formation of a Corrie

Question 1

Introduction
(A corrie is a deep bowl…)

Answer 1

A corrie is a deep, bowl shaped hollow on a mountainside, i.e corrie fee.

Question 2

Glacier formation 1st mark
(snow accumulates…)

Answer 2

Snow accumulates in a north/northeast facing hollow on a mountainside.

Question 3

Glacier formation 2nd mark
(here, more snow…)

Answer 3

Here more snow accumulates in the winter than melts in the summer, this snow is compressed to form neve ice.

Question 4

During glaciation 1st mark
(glacier moves…)

Answer 4

The glacier moves downhill due to gravity.

Question 5

During glaciation 2nd mark
(As this happens…)

Answer 5

As this happens, plucking occurs on the back wall, steepening it.

Question 6

During Glaciation 3rd mark
(this is when ice…)

Answer 6

This is when ice freezes on bedrock, pulling loose rocks away as it moves.

Question 7

During glaciation 4th mark
(Moraine from plucking…)

Answer 7

Moraine from plucking and freeze-thaw weathering (FTW) becomes embedded in the ice and grinds the hollow as the glacier moves.

Question 8

During glaciation 5th mark
(This is…)

Answer 8

This is abrasion.

Question 9

During glaciation 6th mark
(The weight of…)

Answer 9

The weight of the glacier pushes down causing rotational sliding.

Question 10

During glaciation 7th mark
(Which over deepens…)

Answer 10

Which over deepens the hollow.

Question 11

During glaciation 8th mark
(Friction causes…)

Answer 11

Friction causes ice to slow down at the front edge of the corrie.

Question 12

During glaciation 9th mark
(This allows…)

Answer 12

This allows a rock lip to form which traps rain water - forming a corrie tarn following glaciation