Creating Landscapes Cheddar Gorge Cheddar Gorge Goughs Cave
- Slides: 28
Creating Landscapes Cheddar Gorge
Cheddar Gorge
Gough’s Cave, Cheddar Gorge
Creating landscapes: Cheddar Gorge is located in……? Where in the UK is it?
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http: //www. rgs. org/webcasts/activities/limestonelandscapept 2. html
How was Cheddar Gorge Formed? 1) Copy sentence ‘a’ and then complete sentences b to f to show the formation of Cheddar Gorge and caves. a)Over 300 million years ago a thick layer of limestone was created by dead sea creatures at the bottom of the ocean. b) Next, movement from_________________ c) After that, ______________________ d) At the end of the Ice Age________________ e) Rainwater then sunk into the limestone__________ f) Finally, this water___________________ Key words: limestone meltwater tectonic plates buckled glaciers ice age joints rainwater erosion gorge Caves dissolve
Cave formations - Do you know your stalactites and stalagmites? How do they form? How long do they take to form? What are they made of?
The formation of cave decorations (speleothems) Limestone is mainly made of calcite. When water containing dissolved calcium and carbonate reaches the cave ceiling, some of the calcium and carbonate is left behind as calcite, forming cave decorations such as stalactites. Stalactites have formed along joint lines in the limestone where water has seeped through.
The formation of cave decorations How do you think Stalagmites are formed? Stalagmites grow from the floor up, from the deposition of calcium carbonate from drops of water landing on the cave floor. 2) Draw the inside of a cave to show stalactites and stalagmites and explain how they are formed?
What might happen if… What do you think will happen as this Stalagmite and this Stalactite get bigger?
A Pillar (Column)
Extension Use your i. Pads to find out how the landscape of Cheddar Gorge is used. 3) Why might this landscape be important for the local people?
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