 This subduction is responsible for the volcanism in the Austral Volcanic Zone, whereas earthquake activity is low; this is possibly because the subducting plate is too hot and too slow moving.The basement below Aguilera is of Paleozoic-early Mesozoic age and consists of metamorphic rocks.The volcano sits at the easterly margin of the Patagonian Batholith, a Mesozoic-Cenozoic igneous rock province.