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Building Mountains By: Team 2 A mountain is a large piece of land formed by continents colliding with each other. There are 3 different types of mountains: Folded, Fault-Block, and Volcanic. Convergent boundaries form all three of these types of mountains. Folded Mountains The highest mountain ranges in the world are folded mountains. These mountains form when two continents have collided. Folded mountains form when rock layers get pushed together and squeezed upwards. Sometimes folded mountains can form from convergent boundaries. A long time ago the Appalachian Mountains were formed when North America and Africa collided. Europe , Russia, and Asia are most of the places where folded mountains were formed. Fault-Block Mountains Fault-Block mountains form when tectonic forces put enough tension on Earth’s crust, in a result, large blocks of Earth’s crust fall down to other blocks. When sedimentary rock layers are tilted upwards, they can make mountain with rough, jagged peaks. The Tetons in western Wyoming show a great example of Fault-Block mountains. Volcanic Mountains Most, if not all of the world’s major volcanic mountains are located at convergent boundaries where oceanic crust sinks into the asthenosphere at subduction zones. The rock melts in subduction zones from lava, then it rises to Earth’s surface and it erupts to form volcanic mountains. These types of mountains even can form under water, these mountains can even rise above the water and form islands, just like Hawaii. The majority of these tectonically active volcanoes on Earth have formed around the tectonically active of the edge of the Pacific Ocean. This rim is known as the ‘Ring of Fire’.