1. Unit 4: Weathering, Erosion and Landscapes
4.6 Glaciation
Unit 4: Weathering, Erosion and Landscapes
December 13, 2011
Sanders

2. Unit 4: Weathering, Erosion and Landscapes
Glaciation
Glaciers are rivers that are massive and frozen.
Glaciers flow slowly.
Glaciers change the appearance of the landscape.
April 26, 2019
Unit 4: Weathering, Erosion and Landscapes

3. Unit 4: Weathering, Erosion and Landscapes
April 26, 2019
Unit 4: Weathering, Erosion and Landscapes

4. Unit 4: Weathering, Erosion and Landscapes
Retreating Glacier
A glacier doesn’t move backwards, it melts.
Anything that it may have covered becomes exposed.
April 26, 2019
Unit 4: Weathering, Erosion and Landscapes

5. Unit 4: Weathering, Erosion and Landscapes
Kames
A kame is a geological feature, an irregularly shaped hill or mound composed of sand, gravel and till.
April 26, 2019
Unit 4: Weathering, Erosion and Landscapes

6. Unit 4: Weathering, Erosion and Landscapes
Drumlins
Drumlins are tearshaped mounds of till that are deposited by retreating glaciers.
These mounds are aligned north - south.
April 26, 2019
Unit 4: Weathering, Erosion and Landscapes

7. Unit 4: Weathering, Erosion and Landscapes
Kettles
Kettles are small lakes that are created by glaciers.
Notice the size of the lake.
April 26, 2019
Unit 4: Weathering, Erosion and Landscapes

8. Unit 4: Weathering, Erosion and Landscapes
Eskers
Snaking hill that is a pile debris.
The sediment was piled under the glacier.
April 26, 2019
Unit 4: Weathering, Erosion and Landscapes

9. Unit 4: Weathering, Erosion and Landscapes
Till
Unsorted and unlayered sediment.
April 26, 2019
Unit 4: Weathering, Erosion and Landscapes

10. Unit 4: Weathering, Erosion and Landscapes
Erratics
Glaciers leave behind large boulders.
In this case, the boulder is balanced on a few boulders.
April 26, 2019
Unit 4: Weathering, Erosion and Landscapes

11. Unit 4: Weathering, Erosion and Landscapes
U Shaped Valleys
Glaciers carve out U-Shaped valleys.
April 26, 2019
Unit 4: Weathering, Erosion and Landscapes