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1911 Encyclopedia Britannica

Desert of Atacama

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An arid, barren and saline region of western South America, covering the greater part of the Chilean provinces of Atacama and Antofagasta, the Argentine territory of Los Andes, and the south-western corner of the Bolivian department of Potosi. The higher elevations are known as the Puna de Atacama, which is practically a continuation southward of the great Puna region of Peru and Bolivia. It is a broken, mountainous region, volcanic in places, saline in others, and ranges from 7000 to 13,500 ft. in general elevation. Its culminating ridges are marked by an irregular line of peaks and extinct volcanoes extending north by east from about 28° S. into southern Bolivia. On the eastern side, occasional rainfalls occur and streams from the snow-clads peaks produce some slight displays of fertility, but the general aspect of the plateaus, which are dry and cold in winter and in summer are swept by rainstorms and covered by occasional tufts of coarse grass, is barren and forbidding. They are also broken by great saline lagoons and dry salt basins. This region forms the Argentine territory of Los Andes and is habitable in places. On the western slope the land descends gradually to the Pacific, being broken into great basins, or terraces, by mountainous ridges in its higher elevations, widening out into gently-sloping sandy plains below, famous for their nitrate deposits, and terminating on the coast with sharply-sloping bluffs, having an elevation of Soo to 150o ft., and looking from the sea like a range of flat-topped hills. This desolate region, which is rainless and absolutely barren, and was considered worthless for three and a half centuries, is now a treasure-house of mineral wealth, abounding in copper, silver, lead, nickel, cobalt, iron, nitrates and borax. It is occupied by many mining settlements, and includes some of the most productive copper and silver mines of the world.

See L. Darapsky, "Zur Geographie der Puna de Atacama," Zeits. Ges. Erdk. zu Berlin, 1899; G. E. Church, "South America: an Outline of its Physical Geography," Geographical Journal, 1901; John Ball, Notes of a Naturalist in South America (London, 1887); F. O'Driscoll, "A Journey to the North of the Argentine Republic," Geographical Journal, 1904. (A. J. L.)

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Bibliography Information
Chisholm, Hugh, General Editor. Entry for 'Desert of Atacama'. 1911 Encyclopedia Britanica. 1910.

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