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Types of Mountains

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Ethan McAleese

on 22 April 2010

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Transcript of Types of Mountains

Types of Mountains There are five types of mountains they are, Fold, Fault-Block, Dome, Volcanic and Plateau mountains. Folded Mountains -They are the most common type of mountain. -They are also the worlds largest types of mountains. -They get formed when two plates collide, cracking the crust. -The plate that goes up is called anticlines and the ones that go down is called synclines. These are the Himalayan Mountains and they are "fold" mountains. Fault-Block Mountains They were formed when India crasjed into Asia. -They are formed when the breaks in the earth forced rocks up and others down. -It break apart and sometimes the blocks/chunks go up or down. -As they move apart they stack up on each other. The Sierra Nevada mountains in USA is 400km's big. The height of the mountains increases from North to South. This is a picture of Owens Valley and the Sierra Escarpment. Dome Mountains -Dome mountains are formed by magma that force itself up under the crust. -It doesn't push itself up to the ground, it pushes up the layers above it. -The layers of rock that are over pushed up to form the "dome". -The surrounding rock laters are still flat. Solo This picture shows dome mountains. Volcanic Mountains -These types of mountains are formed by volcanos. These mountains are formed when the magma erupts and then goes up on to the surface. -The ash and lava then cools which builds a cone of rock. -The rock and lava layer on top of each other. This shows the layers An example of this is Mt. St. Helens. Plateau Mountains -Plateau Mountains are formed by erosion. -They are Plateau's if they are over 600 meters high up and flat. They are also usually found near fold mountains. -Over a large amount of years rivers and steams erode the Plateau's in valleys which is why there are mountains between valleys.
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