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Ch14_Outline - Chapter 14 Convergent Boundaries Mountain...

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1 Chapter 14 Convergent Boundaries: Mountain Building and the Evolution of Continents Mountain building Mountain building has occurred during the recent geologic past American Cordillera – the western margin of the Americas from Cape Horn to Alaska which includes the Andes and Rocky Mountains Alpine-Himalayan chain Mountainous terrains of the western Pacific Mountain building Older Paleozoic- and Precambrian-age mountains Appalachians Urals in Russia Orogenesis – the processes that collectively produce a mountain belt Includes folding, thrust faulting, metamorphism, and igneous activity
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2 Mountain building Orogenesis – the processes that collectively produce a mountain belt Compressional forces producing folding and thrust faulting Metamorphism Igneous activity Mountain building Several hypotheses have been proposed for the formations of Earth’s mountain belts With the development of plate tectonics it appears that most mountain building occurs at convergent plate boundaries Earth’s major mountain belts Figure 14.3
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