Glaciated Landforms

Question 1

Drumlins (deposition landform)

Answer 1

Mound of glaciated debris that has been streamlined into a elongated hill. Drumlins tend to occur in large groups e.g Hills Of Elsack

Question 2

Till sheets (deposition landform)

Answer 2

Drift (debris) deposited at the end of an ice sheet advance. Till itself varies in composition, depending greatly on the nature of rocks over the ice has moved

Question 3

Erratics

Answer 3

Individual pieces of rock varying in size which is a different type of geology to the rock type it’s been deposited in

Question 4

Terminal moraine

Answer 4

Ridge of till extending across a glacial trough. These landforms make the position of the maximum advance of the ice. Any debris that is been accumulated via plucking and abrasion at the front of the ice will be deposited here in a heap

Question 5

Lateral moraine

Answer 5

Ridge of till running along the edge of a glacial valley. They are parallel ridges of debris deposited along the sides of a glacier.

Question 6

Recessional moraine

Answer 6

Small ridges left as a glacier pauses during its retreat. (Leaving little pause marks- (ridges))

Question 7

Medial moraine

Answer 7

Ridge of moraine that runs down the centre of a valley floor. It forms when 2 glaciers meet and the debris on the edges of the 2 glacier sides join and are carried on top of the enlarged glacier

Question 8

Push moraine

Answer 8

Forms when the advance of a lowland glacier pushes sediment into a pile

Question 9

Pyramidal peak

Answer 9

3 or more Corries develop around hill or mountain top and their back walls retreat

Question 10

Arête

Answer 10

Narrow, steep sided ridge found between two corries, the ridge is often narrow (knife-edged). They form from glacial erosion. Example - Striding edge in Lake District

Question 11

Troughs

Answer 11

Glaciers flow down pre-existing Rover valleys by gravity and as they flow down they erode the sides and floor of the valley making it deeper and wider like a U. (AKA U-shaped Valleys)

Question 12

Striations

Answer 12

Scratches or grooves in the rock surface traveled on by the glacier. They are made by debris embedded in the glacier scraping away on the rock surface as the glacier moves

Question 13

Hanging Valleys

Answer 13

Hanging valleys are created where smaller valleys meet the main glaciated valley. The glaciers in the smaller valleys are not so powerful, so they don’t erode such deep valleys. This means the smaller valleys are left above

Question 14

Ribbon Lake

Answer 14

Long, deep, finger-shaped lake usually found in a glacial trough.

Question 15

Interlocking Spurs

Answer 15

Projecting Ridges that extend alternately from the opposite side of the V-Shaped Valley. /\/

Question 16

Roche Moutonee

Answer 16

Rock formation created by the passing of a glacier. It indicates the direction the ice moved through an area. They vary in size around 1-5M Hugh and 5-20M long. They are like small waves of rock.