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The Antofagasta de la Sierra volcanic field contains some of the youngest volcanic vents of the Argentinian Puna region. The volcanic field is located SW of Beltran volcano and between the Salar de Antofalla on the west and the massive Cerro Galán caldera on the east. The Antofagasta de la Sierra volcanic field contains several very youthful looking basaltic-andesite scoria cones and fresh-looking lava flows, which may only be a few thousand years old (Francis, 1982; de Silva and Francis, 1991). A concentration of scoria cones and lava flows east of the NE-SW-trending Salar de Antofalla, known as the Salar de Antofalla volcanic field, also have a youthful appearance, although precise ages are not known.
The Global Volcanism Program is not aware of any Holocene eruptions from Antofagasta. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Antofagasta page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.
|Antofagasta de la Sierra|
|Feature Name||Feature Type||Elevation||Latitude||Longitude|
|Salar de Antofalla||Volcanic field||25° 50' 0" S||67° 37' 0" W|
|The Antofagasta de la Sierra volcanic field, located between the elongated NE-SW-trending Salar de Antofalla and the massive Cerro Galán caldera to the east, contains the youngest volcanic vents of the Argentinian Puna region. The area includes several "extremely youthful" scoria cones, such as the ones seen here from the SW. Some cones have been estimated to be only a few thousand years old.
Photo by Ben Edwards, 1998 (Dickinson College, Pennsylvania).
The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. 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.
de Silva S L, Francis P W, 1991. Volcanoes of the Central Andes. Berlin: Springer-Verlag, 216 p.
Francis P W, 1982. The Cerro Galan caldera, Argentina. Earthq Inf Bull, 14: 124-133.
Francis P W, Hammill M, Kretzschmar G, Thorpe R S, 1978. The Cerro Galan caldera, north-west Argentina and its tectonic setting. Nature, 274: 749-751.
Francis P W, Sparks R S J, Hawkesworth C J, Thorpe R S, Pyle D M, Tait S R, Mantovani M S, McDermott F, 1989. Petrology and geochemistry of volcanic rocks of the Cerro Galan caldera, northwest Argentina. Geol Mag, 126: 515-547.
Hormann P K, Pichler H, Zeil W, 1973. New data on the young volcanism in the Puna of NW-Argentina. Geol Rundschau, 62: 397-405.