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The Formation of Fold Mountains

The Formation of Fold Mountains. You will need: Several towels – preferably all different colours and of a similar size Two (reasonably heavy) boxes. Create a large area of desk space and lay the towels flat over the top of each other. If some towels are too large, fold them in half . .

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The Formation of Fold Mountains

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  1. The Formation of Fold Mountains You will need: Several towels – preferably all different colours and of a similar size Two (reasonably heavy) boxes W.N.Christiansen January 2014

  2. Create a large area of desk space and lay the towels flat over the top of each other. • If some towels are too large, fold them in half. W.N.Christiansen January 2014

  3. Add labels to the two boxes: CONTINENTAL CRUST and arrows showing the direction of plate movement • The towels represent individual sedimentary rock strata within an ocean basin (the Tethys Sea, for example). • the boxes represent two plates moving towards each other at a collision margin (the Eurasian plate and the Indo-Australian plate, for example). • It may be effective to tuck in ‘excess towel’ at the sides so that the rock strata are more visible W.N.Christiansen January 2014

  4. Get two pupils to slowly push the boxes towards each other • Observe what happens to the rock strata within the ocean basin W.N.Christiansen January 2014

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  10. From a different angle W.N.Christiansen January 2014

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  18. And you have created fold mountains! • Note for teachers: it may be more effective to lay the boxes flat so that the mountains formed rise above the plates W.N.Christiansen January 2014

  19. Using brightly coloured towels is particularly helpful for showing how individual strata bend and are thrusted upwards W.N.Christiansen January 2014

  20. An excellent summary video clip to use as a plenary (esp. if your experiment didn’t work that well!) http://www.bbc.co.uk/learningzone/clips/fold-mountain-formation/12924.html W.N.Christiansen January 2014

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