The region of the Argentine Northwest is formed by three formation orographic: The Fist Is the zone of the plateau, that also occupies part of Bolivia, the south of Peru and north of Chile. It is a set of separated plateaus by lifted of volcanic nature, with volcanos of high altitude, like the Socompa, the Llullaillaco, Tridente, at the moment inactive cords. The Eastern Mountain range is formed by two parallel cords (western and the Eastern one), of paleozoic formation, later ascended by the Andean folding, separated by broken and valleys. The western cord presents/displays majors heights and their snow-covered hill more stop of the Chai, of 6200m. The Eastern cord is of smaller height, and the Black Hill of Zucho reaches 4850m.
The gorges are the communication channels of this zone, of generally pluvial origin, are extended and narrow valleys. Most important and colorful, they are the gorge of Huamahuaca, the Toro and Santa Maria Guachipas. Also are some valleys in zones sunk and stuffed with sedimentation, with climate subtropical, and where cultures are realised and the cities are based. Most outstanding they are the Valley of Lerma, of Jujuy and Field Santo. The Andean Mountain ranges Are lower, and covered by the subtropical vegetation, and its greater elevation is the Ceibal hill, of 2.580m. The Climate Coexists in the region two types different from climate: the barren climate of high mountain with bioma of semi-empty, and the subtropical climate of the mountain ranges, with subtropical forest. Geography In the Fist salares and salt mines have formed. From the Eastern Mountain range and the Andean Mountain ranges the rivers descend the Bermejos and Salado of the North, who are going to descend and to comprise of the River basin of the Silver.
Population and Society the active process of urbanization Is clearly visible and the little presence of population of European origin, grouped mainly in the provincial capitals (San Miguel de Tucuman, Jumps, San Salvador de Jujuy), and in the city of Oran. In the most inhospitable areas of the Fist and the gorges indigenous groups are based, coyas (quechuas omaguacas and calchaques, with great incaica influence), towns that dominated the techniques of the irrigation, for the culture, especially of the maize, the art of the weave and the ceramics, the metallurgy of gold, copper and the silver. The language quechua is at the moment of use common in the Argentine northwest. Economy the agriculture of the zone is specialized in subtropical cultures (cane of sugar, tropical tobacco, horticulture and fruits) and the industrial activities (transformation of farming and mining products) in process of intensification and diversification. It is realised the young and mestizacin of the zebu. The mineral resources constitute sulphur, iron, borax, lithium, lead, silver, petroleum and gas. Tourism and Destinies the tourism constitutes an important economic resource, by the landscaping and cultural attractions, by the colorful thing of geography, the people and her customs, the typical thing of its historical clothes, their dances and their ceremonies, and monuments that can there be visited. There there are places in which the time it seems to have itself stopped. They deserve to stand out like places to visit, besides already mentioned, San Antonio of Cobres, pucares of Tilcara and Santa Rosa de Tastil, the National Parks of Barit and Property the King, the Churches of San Carlos, Cach, and Yavi; and countless attractive natural.