Cile · Stratovulcano
Nevados de Chillán
Chillan, Nevados de
- Tipo
- Stratovulcano
- Altitudine
- 3180 m
- Ultima eruzione
- 2022
- Tipo
- Stratovulcano
- Paese
- Cile
- Regione
- Sud America / Southern Andean Volcanic Arc
- Altitudine
- 3180 m
- Coordinate
- -36.868, -71.378
- Ultima eruzione
- 2022
- Contesto tettonico
- Zona di subduzione / Crosta continentale (> 25 km)
- Forma vulcanica
- Composito
- Roccia principale
- Andesite / Andesite basaltica
Sintesi geologica
The compound volcano of Nevados de Chillán is one of the most active of the Central Andes. Three late-Pleistocene to Holocene stratovolcanoes were constructed along a NNW-SSE line within three nested Pleistocene calderas, which produced ignimbrite sheets extending more than 100 km into the Central Depression of Chile. The dominantly andesitic Cerro Blanco (Volcán Nevado) stratovolcano is located at the NW end of the massif. Volcán Viejo (Volcán Chillán), which was the main active vent during the 17th-19th centuries, occupies the SE end. The Volcán Nuevo lava-dome complex formed during 1906-1945 on the NW flank of Viejo. The Volcán Arrau dome complex was then constructed on the SE side of Volcán Nuevo between 1973 and 1986, and eventually exceeded its height. Smaller domes or cones are present in the 5-km valley between the two major edifices.
Sintesi da Wikipedia
Riassunto in ingleseNevados de Chillán is a group of stratovolcanoes located in the Andes of Ñuble Region, Central Chile, and is one of the most active volcanoes in the region. It consists of three overlapping peaks, 3,212 m (10,538 ft) Cerro Blanco in the northwest and 3,089 m (10,135 ft) Volcán Viejo in the southeast, with Volcán Nuevo in the middle. Volcán Viejo was the main active vent during the 17th-19th centuries, and the new Volcán Nuevo lava dome complex formed between 1906 and 1945, eventually growing to exceed Viejo in height by the mid-1980s.
Wikipedia · CC BY-SA · Leggi l'articolo completo →
Storia delle eruzioni
32 registrateGlossarioCronologia dettagliata
- 2016VEI 2Osservata2016-01-08 – 2022-10-17Nicanor crater
- 2009VEI ?Metodo non indicato2009-01-21 – 2009-01-22
- 2003VEI 1Osservata2003-08-29 – 2003-09-15Saddle between Nuevo & Arrau volcanoes
- 1973VEI 2Osservata1973-07-16 – 1986-07-02Volcán Arrau (SE flank of Volcán Nuevo)
- 1972VEI ?Metodo non indicato1972-07-02 – fine sconosciutaVolcán Nuevo
- 1965VEI ?Metodo non indicato1965-07-02 – fine sconosciutaVolcán Nuevo
- 1946VEI 2Osservata1946-07-02 – 1947-07-02Volcán Nuevo
- 1945VEI ?Metodo non indicato1945-07-02 – fine sconosciutaVolcán Nuevo
- 1935VEI 2Osservata1935-07-02 – fine sconosciutaWest flank of Volcán Viejo
- 1934VEI 2Osservata1934-01-17 – fine sconosciutaVolcán Nuevo
- 1928VEI 2Osservata1928-11-30 – 1929-07-02Volcán Nuevo
- 1927VEI 2Osservata1927-04-10 – fine sconosciutaVolcán Nuevo
- 1923VEI 2Metodo non indicato1923-07-02 – fine sconosciutaVolcán Nuevo
- 1914VEI 2Osservata1914-07-02 – fine sconosciutaVolcán Nuevo
- 1907VEI 1Osservata1907-07-02 – fine sconosciutaVolcán Nuevo
- 1906VEI 2Osservata1906-08-06 – 1906-12-16Volcán Nuevo
- 1898VEI 2Osservata1898-07-02 – fine sconosciutaVolcán Viejo
- 1893VEI 2Osservata1893-03-04 – fine sconosciutaVolcán Viejo
- 1891VEI 2Osservata1891-02-16 – fine sconosciutaVolcán Viejo
- 1883VEI 2Metodo non indicato1883-01-21 – fine sconosciutaVolcán Viejo (Volcán las Aguilas?)
- 1877VEI 2Osservata1877-02-12 – fine sconosciutaVolcán Chillán
- 1872VEI 2Osservata1872-07-22 – fine sconosciutaVolcán Chillán
- 1864VEI 3Osservata1864-11-30 – 1865-02-03NW flank of Cerro Blanco (Santa Gertrudis)
- 1861VEI 2Osservata1861-06-16 – 1863-07-02NW flank of Cerro Blanco (Santa Gertrudis)
- 1860VEI 2Osservata1860-07-25 – fine sconosciutaW flank of Volcán Viejo (Volcán Renegado)
- 1752VEI 2Osservata1752-01-30 – fine sconosciutaCerro Blanco and Volcán Viejo?
- 1749VEI 3Osservata1749 – 1751Volcán Viejo
- 1650 (±50 anni)VEI 3Osservata1650 – fine sconosciutaVolcán Viejo
- 320 a.C. (±75 anni)VEI ?Stima geologica320 a.C. – fine sconosciutaVolcán Viejo
- 1510 a.C. (±50 anni)VEI ?Stima geologica1510 a.C. – fine sconosciutaVolcán Viejo
- 3660 a.C. (±500 anni)VEI ?Stima geologica3660 a.C. – fine sconosciutaVolcán Viejo
- 6890 a.C. (±500 anni)VEI ?Stima geologica6890 a.C. – fine sconosciutaVolcán Viejo
Vulcani nelle vicinanze
Link esterni
⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.