1. Features of erosion and deposition associated with glaciated landscapes
Moving Ice

2. The Ice Age… One third of the Earth was covered with ice.
The last Ice Age ended about years ago .
One third of the Earth was covered with ice.

3. Glaciers- masses of ice that cover the land and move slowly downhill
Glaciation is changes caused to a landscape by the action (movement) of glaciers.

4. Glaciers have enormous power, therefore they can erode valleys.
Glaciers also carry a load of loose rocks and stones.
Moving ice can also cause interlocking spurs.
 BUT over time a V-shaped valley turns into a U-shaped valley.
Spurs get eroded into truncated or shortened spurs.

5. Glacial Erosion
Glacial Erosion.mp4

6. Glacial erosion results in valleys

7. Over time the valley gets ‘scooped out’ = U-shaped valleys

8. U-shaped valleys Formed by the powerful erosive action of glaciers.
It removes large
masses of material
from the valley
sides.

9. Hanging valleys
After the glacier melts former river valleys remain high above the main valley. These are called hanging valleys.

10. Moraines
Glaciers pick up large amount of material or moraine.

11. Moraine is given different names according to where it is deposited
Lateral moraines  when glaciers carry moraines and they erode valley sides.
Medial moraines  erosion of the middle of the valley.
End moraines  If moraines are carried no further and are deposited

12. Glacial striations
On page 57 in your textbook you will see a picture of glacial striations in the Northern Cape.
Striations (scratched lines) are scratch marks made on the rock surface by the moving glacier.

13. Video
Glaciers and Glacial Landforms.mp4