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There are no activity reports for Lonquimay.
Summary of eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1988 Dec 25||1990 Jan 24 ± 1 days||Confirmed||3||Historical Observations||NE flank (Navidad Crater)|
|[ 1940 Feb ]||[ Unknown ]||Uncertain|
|1933 Jan 4||Unknown||Confirmed||2||Historical Observations|
|1887 Jun 2||1890 Jan||Confirmed||3||Historical Observations||NE flank|
|1853 Feb||Unknown||Confirmed||3||Historical Observations|
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.
Casertano L, 1963a. Chilean Continent. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 15: 1-55.
Gonzalez-Ferran O, 1995. Volcanes de Chile. Santiago: Instituto Geografico Militar, 635 p.
Moreno H, 1992. Estudio preliminar del riesgo volcanico del area de Ralco. Proyecto Ralco, INGENDESA, Chile, unpublished rpt.
Moreno H, Gardeweg M C, 1989. La erupcion reciente en el complejo volcanico Lonquimay (Diciembre 1988-), Andes del Sur. Rev Geol Chile, 16: 93-117.
Narranjo J A, Sparks R S J, Stasiuk M V, Moreno H, Ablay G J, 1992. Morphological, structural and textural variations in the 1988-1990 andesite lava of Lonquimay volcano, Chile. Geol Mag, 129: 657-678.
Lonquimay is a small, flat-topped, symmetrical stratovolcano of late-Pleistocene to dominantly Holocene age immediately SE of Tolguaca volcano. A glacier fills its summit crater and spills down the south flank. The volcano is dominantly andesitic, but basaltic and dacitic rocks are also present. An E-W-trending fissure is present, but a prominent NE-SW fissure cuts across the entire volcano. The Cordón Fissural Oriental fissure zone extends 10 km to the NE and has produced a series of NE-flank vents and cinder cones, some of which have been the source of voluminous lava flows in historical time. Major lava flows erupted during 1887-90 and 1988-90 traveled up to 10 km from their NE-flank vents.