Aconcagua (wine region) both from the province where it is located, San Felipe de Aconcagua, and also from the Aconcagua mountain, the highest peak in the Andes at 6,956 meters (22,828 feet). The snow-capped peak of Aconcagua and the surrounding mountains delivers essential melt water to the valley below. The small, 1,098-hectare winegrowing area is well known for its red wines, which have earned international acclaim, with Vina Errázuriz’s “Seña” placing ahead of both Château Lafite and Château Margaux in blind tasting held in Berlin in 2004, a milestone for the Chilean wine industry. Although the valley is primarily known for the red
Ojos del Salado of the Nazca Plate beneath the South America Plate became increasingly shallower and this caused volcanism to shift from the Maricunga Belt to the Ojos del Salado region. The Paleozoic basement crops out only northwest of Nevado Tres Cruces. Other geologic units in the region are Oligocene sedimentary units and volcanic rocks ranging from Oligocene age to less than 1.5 million years old. The area is part of a tectonic boundary between a volcanically active region north of the boundary and a less volcanically active region south of the boundary, which is also characterized by geographical differences, e.g. the presence