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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
a mountain massif on the eastern slope of the Cordillera de los Andes in Argentina, near 32° S lat. Elevation, 6,770 m. It is composed of quartz porphyries and andesites. There is perennial snow above 5,000 m.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.