1. LITHOSPHERE GLACIATION 1 Materials carried by the glaciers are deposited in two main ways;  Glacial Deposits (unsorted) and  Fluvio-glacial deposits (sorted) LANDFORMS OF GLACIAL DEPOSITION deposition In your textbook, read the section about glacial deposition and take notes(page 99 – 104) These slide-shows are all on the Geography blog if you wish to copy any notes from them; we will not be stopping in class for you to do this

2. LITHOSPHERE GLACIATION 2  Moraine is the waste material worn away and collected by the ice.  It is angular in shape.  Glacial deposits are poorly sorted, ie all different sizes and rock types are mixed together. deposition

3. LITHOSPHERE GLACIATION 3 You can see the moraine on the surface of the glacier. deposition

4. LITHOSPHERE GLACIATION 4 TYPES OF MORAINE deposition Lateral moraine is found on the sides of the glacier. Scree, from frost shattering, is an important source. Medial moraine is found down the middle of the glacial surface and occurs when the inner lateral moraines of two glaciers join. Ground moraine is found at the base (bottom) of the ice. It is also called till or boulder clay. Englacial moraine is found inside the ice itself. Supra-glacial Terminal moraine is found in front of the snout of the glacier if it is stationary. It represents the maximum advance of the ice.

5. LITHOSPHERE GLACIATION Evidence of glacial deposition in the UK 5

6. LITHOSPHERE GLACIATION 6 Terminal moraineSnout of glacier deposition Clip In photo

7. LITHOSPHERE GLACIATION 7 Erratics are large rocks that are completely different from the type of rocks on which they rest They were carried by the ice-sheet, sometimes for hundreds of kilometres and then deposited. ERRATICS deposition

8. LITHOSPHERE GLACIATION 8 Erratics like this are often found on the valley floor. deposition

9. LITHOSPHERE GLACIATION 9 Glacial streams are found under the ice.They are loaded with debris (sand and gravel) carried by the meltwater. As the ice retreats, the river deposits its load. The built-up river bed is called an Esker. ESKER This river has all but dried up! deposition

10. LITHOSPHERE GLACIATION 10 An esker is a steep-sided, long, winding ridge, made up of gravel and sand. Most are tree-covered. deposition

11. LITHOSPHERE GLACIATION 11 Drumlins are smooth, rounded mounds of ground moraine. The steep (stoss) side faces the direction the ice Moved from. Drumlins often occur in swarms or groups on the valley floor. DRUMLIN deposition Side view Plan view

12. LITHOSPHERE GLACIATION 12 Here is a drumlin outside Buchlyvie. Can you work out the ice direction? deposition

13. LITHOSPHERE GLACIATION 13 deposition Meltwater streams bringing outwash to be distributed across an outwash plain. Note the braiding of the stream channels.

14. LITHOSPHERE GLACIATION 14 depression formed when ice melts A KETTLEHOLE LAKE depression filled with water to form kettle lake LOCH MORLICH There’s also the LAKE OF MENTEITH deposition

15. LITHOSPHERE GLACIATION 15 deposition GLACIER During the end stages of glaciation, a lake gathers at each side of the ice, filling with moraine. Once the ice has melted, the debris has been lowered to the valley floor and created a terrace with a steep side and flattish top. Kame terraces What is a kame terrace?

16. LITHOSPHERE GLACIATION 16 deposition This slide shows a set of kame terraces.

17. LITHOSPHERE GLACIATION 17 Identify the features shown on the diagram by matching the numbers to the names given. Esker / Terminal Moraine / Outwash Plain / Drumlin / Till (Ground Moraine/Boulder Clay) / Kettlehole lake / Outwash Sands and Gravels. deposition

18. LITHOSPHERE GLACIATION 18 As you go through your revision, for each feature mentioned, look back through your textbooks and this presentation. You are looking for named examples of as many features as possible. Remember that you will get marks in the exam for showing the skill of quoting places as examples from your notes! deposition