 Volcanism occurs along much of the Andes, partly due to the subduction of the Antarctic Plate and partly due to the subduction of the Nazca Plate, in each case beneath the South America Plate.The latter subduction gives rise to the Northern Volcanic Zone, the Central Volcanic Zone and the Southern Volcanic Zone of the Andes, the Austral Volcanic Zone was once considered part of the Southern Volcanic Zone.Aguilera has erupted dacites with intermediate contents of potassium, defining a calc-alkaline suite with adakitic characteristics.