In this unit we will look at… Limestone Landscapes Coastal Landscapes You will… Learn about the landforms associated with each landscape Have to be able to draw sketches of some landforms Have to know the processes that shaped these landscapes Learn how to identify landscape features on an O.S map
Glaciated Landscapes Throughout the lithosphere unit you will use O.S maps to identify features, using 4 and 6 figure grid references. Task 1; Look at the O.S map of the Cairngorms on the next slide and describe the evidence which shows that this area was once affected by glaciation. Find features of glaciation on the map extract, and use 4 and 6 figure grid references to show where the features are on the map.
Remember!
U-shaped valleys and glacial erosion. But what processes have shaped these landforms, and other landforms of glacial erosion?
Plucking; Plucking; When rocks have become weakened by freeze-thaw, the moving glacier freezes onto the valley sides and floor As the glacier moves downslope by gravity, the rocks that the glacier has frozen onto are torn away from the valley sides and floor By tearing away huge rocks, the valley sides are left very steep and the base very flat. Abrasion; The jagged rocks and stones embedded at the base of the glacier or ice sheet, scrapes along the valley sides and base. Where the rocks embedded in the glacier scratch along the surface, striations may be left on the rock surface. Striations are scratch marks on the rock surface.
Homework For tomorrow… Answer the 1998 past paper question on Glaciation (3b)
Task 1: Using the information that you have just heard and your notes, answer the following question; and explain the processes involved in the formation of this feature.
Annotated diagrams may be used.
3 marks
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