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The Global Volcanism Program has no activity reports for Cochiquito Volcanic Group.
The Global Volcanism Program has no Weekly Reports available for Cochiquito Volcanic Group.
The Global Volcanism Program has no Bulletin Reports available for Cochiquito Volcanic Group.
A small group of young Argentinian volcanoes lies north of the town of Buta Ranquil, near where the Río Grande and Río Barrancas join to form the Río Colorado. Volcán Cochiquito is an alkaline basaltic stratovolcano of estimated Pleistocene-Holocene age north of the junction and has eight satellitic cones. Volcán Sillanegra (or Malal) is pyroclastic cone complex with two craters and basaltic aa lava flows located east of the Río Grande. Its age was estimated to be Holocene (González-Ferrán, 1995). Volcán Ranquil del Sur is a small stratovolcano south of the Río Barranca with an estimated Pleistocene-Holocene age that contains a 600-m-wide crater and produced andesitic pyroclastic material and lava flows.
The Global Volcanism Program is not aware of any Holocene eruptions from Cochiquito Volcanic Group. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Cochiquito Volcanic Group 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.
|Feature Name||Feature Type||Elevation||Latitude||Longitude|
|Cochiquito, Volcán||Stratovolcano||1435 m||-36° 44' 20" S||-69° 50' 2" W|
|Ranquil del Sur, Volcán||Pyroclastic cone||36° 53' 0" S||69° 59' 0" W|
|Pyroclastic cone||1945 m||36° 49' 0" S||69° 41' 0" W|
|The small stratovolcano surrounded by an apron of lava flows in the center of this NASA Landsat image (with north to the top) is Cochiquito volcano. The alkaline basaltic volcano has eight satellitic cones and lies near the junction of the Río Barrancas (cutting diagonally across the image from the upper left) and the Río Grande (right-center). Lava flows from the Sillanegra pyroclastic cone complex can be seen across the Río Grande below and to the right of Cochiquito.
NASA Landsat7 image (worldwind.arc.nasa.gov)
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.
Gonzalez-Ferran O, 1995. Volcanes de Chile. Santiago: Instituto Geografico Militar, 635 p.