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mountain |
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mountain) Mountains are created when two continental plates collide and no subduction takes place, resulting in the land at the collision zone being squeezed together and thrust upwards. ) Compassberg Mountains in South Africa. Many geological processes are at work here, particularly freeze-thaw action in which rocks are broken apart by the expansion of frozen water and repeated heating and cooling. ) A mountain landscape near Compassberg, South Africa. ) Pen y Fan, one of the major peaks or beacons that give the South Wales National Park its name, the Brecon Beacons. The mountain rises to a height of 886 m/2,907 ft above sea level and towers over Neuadd reservoir. It is a popular challenge for climbers from all over the UK. Natural upward projection of the Earth's surface, higher and steeper than a hill. Mountains are at least 330 m/1,000 ft above the surrounding topography. The existing rock below a high mountain may be subjected to high temperatures and pressures, causing metamorphism. Plutonic activity also can accompany mountain building. |
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No one can say that Guph was not brave, for he had determined to visit those dangerous creatures the Phanfasms, who resided upon the very top of the dread Mountain of Phantastico. The house occupied by the family was on the slope of a mountain, and after a long drought there was a terrible tempest which not only raised the river to a great height but loosened the surface of the mountain so that a great landslide took place. When they came to the mountain it proved to be a rugged, towering chunk of deep green glass, and looked dismal and forbidding in the extreme. |
mountain
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