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Geological Formations

Fitz Roy

Inselbergs and Crystalline Monoliths

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Fitz Roy, also called Cerro Chalten, is a granite peak in the Southern Patagonian Andes on the border of Argentina and Chile, rising to about 3,405 meters. It formed from a body of granite that intruded into the crust and later was exposed at the surface by regional uplift and by glacial erosion, which scoured away the softer surrounding rock and sculpted the mountain's characteristic sheer, near-vertical granite faces. Its steepness, combined with notoriously severe and unpredictable weather generated by the nearby Southern Patagonian Ice Field, makes it one of the most technically demanding mountains in the world for climbers; it was first climbed in 1952 by French mountaineers Lionel Terray and Guido Magnone.

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Glaciation, Processes

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