Glacial Transportation And Deposition

Question 1

What is transportation?

Answer 1

The glaciers ability to move material over very large distances

Question 2

What is bulldozing?

Answer 2

When the ice pushes loose material in front of it

Question 3

What is deposition?

Answer 3

When the ice carrying the glacier melts the material is dropped on the valley floor

It also occurs when the or is overloaded with material so doesn’t have enough energy to carry it all

Question 4

What landforms does the deposited material make?

Answer 4

Moraines and drumlins

Question 5

What are the five types of morraine?

Answer 5

Lateral 
Medial 
Terminal 
Recessional 
Ground

Question 6

What is lateral moraine?

Answer 6

Found on the sides of the glacier

Scree from frost shattering is an important source

Question 7

What is medial moraine?

Answer 7

Found down the middle of the glacial surface and occurs when the inner latteral moraine of two glaciers join

Question 8

What is terminal moraine?

Answer 8

Found in front of the snout of the glacier if it is stationary
It represents the maximum advance of the ice
Always the largest and widest moraine

Question 9

What is recessional moraine?

Answer 9

This is found behind terminal moraine but is not as wide or high
There may be several recessional moraines
They mark where the glacier has retreated and then stopped retreating depositing its materials

Question 10

What is ground moraine?

Answer 10

This is found at the base (bottom) of the ice
Also known as till or boulder Clay
Is comes from abrasion on the base of the glacier

Question 11

What is moraine?

Answer 11

Angular rock material that is transported and later deposited by the glacier

Question 12

What must you say in exam when explaining moraine?

Answer 12

Where the material has come from (freeze thaw weathering) for medial and lateral

For other three types of moraine mention abrasion or plucking

Must say material has been deposited by the glacier due to a rise in temperature as the glacier moves down the valley

Question 13

What is a drumlin?

Answer 13

An elongated hill of glacial deposits

Question 14

How Big can drumlins be?

Answer 14

1km in length
500m in width
50m in height

Question 15

What are the ends like and what are a group of drumlins called?

Answer 15

One blunt end
One tapered end

A swarm

Question 16

Describe the formation of a drumlin?

Answer 16

Formed when the glacier is overloaded with moraine from freeze thaw weathering abrasion and plucking , it is also melting so it has less energy to carry the material
When the glacier meets an obstacle is doesn’t have the energy to carry the moraine over the obstacle so it deposits it around the obstacle
More is deposited at first creating a blunt end as the glacier moves less is deposited creating a tapered end