Argentina Geographic regions
Pampas
The plains west and south from Buenos Aires. Called the Humid Pampa, they cover most of the provinces of Buenos Aires and Córdoba and large portions of the provinces of Santa Fe and La Pampa. The western part of La Pampa and the province San Luis are also mostly plains (the Dry Pampa); but they are drier and used mainly for grazing. The Sierra de Córdoba in the homonymous province (extending into San Luis) is the most important geographical feature of the pampas.
 Gran Chaco
The Gran Chaco region in the north of the country is seasonal dry/wet, mainly cotton
growing and livestock raising. It covers the provinces of Chaco and Formosa. It is dotted with subtropical forests, scrubland, and some wetlands, home to a large number of plant and animal species. The province of Santiago del Estero lies in the drier region of the Gran Chaco.
Mesopotamia
The land between the Paraná and Uruguay rivers is called Mesopotamia, and it is shared by the provinces of Corrientes and Entre Ríos. It features flatland apt for grazing and plant growing, and the Iberá Wetlands in central Corrientes. Misiones Province is more tropical and belongs within the Brazilian Highlands geographic feature. It features subtropical rainforests and the Iguazú Falls.
Patagonia
The steppes of Patagonia, in the provinces of Neuquén, Río Negro, Chubut and Santa Cruz, are of tertiary origin. Most of the region is semiarid in the north to cold and arid in the far south, but forests grow in its western fringes which are dotted with several large lakes. Tierra del Fuego is cool and wet, moderated by oceanic influences. Northern Patagonia (Río Negro, south of the homonymous river, and Neuquén) can also be referred as the Comahue region.
Cuyo
West-central Argentina is dominated by the imposing Andes Mountains. To their east is the arid region known as Cuyo. Melting waters from high in the mountains form the backbone of irrigated lowland oasis, at the center of a rich fruit and wine growing region in Mendoza and San Juan provinces. Further north the region gets hotter and drier with more geographical accidents in La Rioja Province. The region's easternmost border is marked by the Sierras Pampeanas, a series of three low mountain ranges that spread from north to south in the northern half of the province of San Luis.
NOA or Northwest
This region is the highest in average elevation. Parallel mountain ranges, several of which have peaks higher than 20,000 feet (6,000 m), dominate the area. These ranges grow wider in geographic extent towards the north. They are cut by fertile river valleys, the most important being the Calchaquí Valleys in the provinces of Catamarca, Tucumán, and Salta. Farther north Jujuy Province near Bolivia lies mainly within the Altiplano plateau of the Central Andes. The Tropic of Capricorn goes through the far north of the region.
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