Depositional landforms

Question 1

Moraine

Answer 1

Used as a generic term for landforms associated with the depostion of till from a glacier

Question 2

Ground moraine

Answer 2

The sediment beneath the glacier that is smeared over the underlying bedrock - can be several metres thick and often forms hummocky surface topography

Question 3

Terminal moraine

Answer 3

Sediment piled up at the furthest extent of an advancing glacier - appears as a line of hills rather than a continuous ridge due to meltwater streams

Question 4

Recessional moraine

Answer 4

A retreating glacier often experiences periods of stability where a secondary ridge can form. same characteristics as terminal moraine apart from the location.

Question 5

Lateral moraine

Answer 5

A high almost symetrical ridge formed alongside a glacier primarily from the build-up of screeslopes

Question 6

Medial moraine

Answer 6

When 2 glaciers merge, lateral moraines at the edges of the 2 glaciers join. this line travels down the centre of the glacier. When the ice melts, the medial moraine is deposited to form a low ridge

Question 7

Erratics

Answer 7

Boulders or small rocks that have been deposited in a location that is foreign to its origin. They give clues in establishing the direction of the ice movement.