Glacial And Flucioglacial Landforms

Question 1

Describe a terminal moraine

Answer 1

Narrow ridge of un sorted material extending across a valley

Question 2

Describe a recessional moraine

Answer 2

Series of narrow ridges extending across the valley

Question 3

Describe a lateral moraine

Answer 3

Un sorted material found along the sides of glaciers/ glaciated valleys

Question 4

Describe a medial moraine

Answer 4

Mounds of material found in the centres of glaciers

Question 5

Describe a push moraine

Answer 5

Un sorted material found across a valley with stones tilted at an angle

Question 6

Describe a drumlin

Answer 6

Small elongated mounds with a steep end (stoss) facing up valley, a gentle sloping end (lee) facing down valley. Streamlined shape and found in swarms.

Question 7

Describe an erratic

Answer 7

Rocks which are not native to the area.

Question 8

Describe a kettle hole lake

Answer 8

Small, shallow lake containing stratified material

Question 9

Describe an esker

Answer 9

Long, sinuous, linear ridge of sorted material

Question 10

Describe a kame

Answer 10

Mounds of sorted material deposited by meltwater along the valley sides or as a delta at the ice front.

Question 11

Describe the out wash plain

Answer 11

Sorted deposits of gravel, sand and clay spread over a long wide lowland area

Question 12

Describe the formation of till

Answer 12

Mainly unsorted sub glacial materials deposited by meltwater

Question 13

Describe the formation of a terminal moraine

Answer 13

Mounds of boulders deposited at maximum advance of the ice

Question 14

Describe the formation of a recessional moraine

Answer 14

Deposited when the glacier halts while retreating

Question 15

Describe the formation off lateral moraine

Answer 15

Material found along the sides of a glacier as a result of frost shattering

Question 16

Describe the formation of a medial moraine

Answer 16

Meeting of two lateral moraies

Question 17

Describe the formation of a push moraine

Answer 17

Materials already deposited on the valley floor pushed upwards by a temporary ice advance

Question 18

Describe the formation of drumlins

Answer 18

Too much material in the glacier so it can’t be carried and is deposited.

Question 19

Describe the formation of erratics

Answer 19

Rocks carried by a glacier from the source to an area of different rock

Question 20

Describe the formation of kettle hole lakes

Answer 20

Blocks of dead ice (detached) left by a melting ice sheet surrounded by sediment, then melts and water remains in lakes.

Question 21

What is dead ice

Answer 21

A detached block of ice from a melting glacier

Question 22

Describe the formation of an esker

Answer 22

Sub glacial river deposition. Glacier retreats leaving behind the ridge of sediment

Question 23

Describe the formation of a Kame

Answer 23

Material deposited where the meltwater streams are in contact with the ice

Question 24

Describe the formation of an out wash plain

Answer 24

Meltwater spreads out over low land areas, velocity decreases and deposits load of gravel sand and clay

Question 25

Describe a till.

Answer 25

Unsorted, angular deposits of rock, sand and clay. (Boulder clay)