Wikipedia:Today's featured article/August 14, 2024
Cerro Panizos is a late Miocene-age shield-shaped volcano, made up of two depressions formed by the collapse of volcanos (calderas) and a group of lava domes. It consists of ignimbrites and is in the Potosí Department of Bolivia and the Jujuy Province of Argentina. It is one of several ignimbrite or caldera systems that, along with 44 active stratovolcanoes, are part of the Andean Central Volcanic Zone (CVZ). Subduction of the Nazca Plate beneath South America is responsible for most of the volcanism in the CVZ. Panizos is the source of two major ignimbrites: Cienago ignimbrite erupted about 7.9 million years ago; and the more recent Panizos ignimbrite, erupted 6.7 million years ago. The Panizos ignimbrite has a total volume exceeding 650 cubic kilometres (160 cu mi). Several volcanic cones such as Limitayoc were active between the ignimbrite eruptions, and a plateau of lava flows and lava domes formed in the central area of the Panizos ignimbrite after the last eruptions. (Full article...)