No latest activity reported for Irruputuncu.

Below is a summary of eruption dates and Volcanic Explosivity Indices (VEI).

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Banks N G, 1991. . (pers. comm.)

Casertano L, 1963a. Chilean Continent. {Catalog of Active Volcanoes of the World and Solfatara Fields}, Rome: IAVCEI, 15: 1-55

de Silva S L, Francis P W, 1991. {Volcanoes of the Central Andes}. Berlin: Springer-Verlag, 216 p

Gonzalez-Ferran O, 1995. {Volcanes de Chile}. Santiago: Instituto Geografico Militar, 635 p

Smithsonian Institution-GVN, 1990-. [Monthly event reports]. {Bull Global Volc Network}, v 15-33

Irruputuncu is a small stratovolcano that straddles the Chile/Bolivia border. It is the youngest and most southerly of a NE-SW-trending chain of volcanoes. Irruputuncu was constructed within the collapse scarp of a Holocene debris avalanche whose deposit extends to the SW. Subsequent eruptions filled much of this scarp and produced thick, viscous lava flows down the western flank. The summit complex contains two craters, the southernmost of which is fumarolically active. The first unambiguous historical eruption from Irruputuncu took place in November 1995, when phreatic explosions produced dark ash clouds.