Physical Geography-Glacial Material

Question 1

Supraglacial

Answer 1

Debris carried on the SURFACE OF THE GLACIER
Comes from WEATHERING AND ROCKFALL

Question 2

Englacial

Answer 2

Debris carried WITHIN the GLACIER
Can be supraglacial material that has fallen into crevasses or sunk in snow

Question 3

Subglacial

Answer 3

Debris EMBEDDED IN THE BASE of the Glacier
May have derived from PLUCKING/ABRASION

Question 4

Drift

Answer 4

All material deposited during glaciation

Question 5

Till

Answer 5

Material deposited by the Ice

Question 6

Outwash

Answer 6

Material deposited by the MELTWATER

Question 7

Two types of till

Answer 7

Lodgement till
Ablation till

Question 8

Lodgement till

Answer 8

Material deposited by ADVANCING ICE
-due to DOWNWARD PRESSURE exerted by Thick ice
Drumlins are an example of this

Question 9

Ablation till

Answer 9

Material deposited by MELTING ICE
From glaciers that are stagnant or are in retreat
Occurs during warm periods or at the end of glacial events
Most glacial depositional landform are of this type

Question 10

Characteristics of Till

Answer 10

Angular or sub-angular in shape
Unsorted -different sizes in particles
Unstratified-mounds in material