Argentina · Stratovulcano
Aracar
- Tipo
- Stratovulcano
- Altitudine
- 6095 m
- Ultima eruzione
- Sconosciuto
- Tipo
- Stratovulcano
- Paese
- Argentina
- Regione
- Sud America / Central Andean Volcanic Arc
- Altitudine
- 6095 m
- Coordinate
- -24.290, -67.783
- Ultima eruzione
- Sconosciuto
- Contesto tettonico
- Zona di subduzione / Crosta continentale (> 25 km)
- Forma vulcanica
- Composito
- Roccia principale
- Andesite / Andesite basaltica
Sintesi geologica
Aracar is a steep-sided stratovolcano with a youthful-looking summit crater 1-1.5 km in diameter that contains a small lake. It is located just east of the Argentina-Chile border. The volcano was constructed during three eruptive cycles dating back to the Pliocene. The andesitic stratovolcano overlies dacitic lava domes. Lava flows found at the base of the volcano below 4500 m elevation are relatively well preserved, but upper-flank lavas, often an indication of youthful activity, are not present (de Silva, 2007 pers. comm.). There were reports of possible ash columns from the summit in 1993, but it is not known whether these were rockfall dust or eruption plumes.
Sintesi da Wikipedia
Riassunto in ingleseAracar is a large conical stratovolcano in northwestern Argentina, just east of the Chilean border. It has a main summit crater about 1–1.5 kilometres (0.6–0.9 mi) in diameter and sometimes contains crater lakes and a secondary crater. The volcano has formed, starting during the Pliocene, on top of a lava platform and an older basement. Constructed on a base with an altitude of 4,100 metres (13,500 ft), it covers a surface area of 192.4 square kilometres (74.3 sq mi) and has a volume of 148 cubic kilometres (36 cu mi). The only observed volcanic activity was a possible steam or ash plume on March 28, 1993, seen from the village of Tolar Grande about 50 km (31 mi) southeast of the volcano, but with no evidence of deformation of the volcano from satellite observations. Inca archeological sites are found on the volcano.
Wikipedia · CC BY-SA · Leggi l'articolo completo →
Storia delle eruzioni
1 registrateGlossarioCronologia dettagliata
- 1993VEI 2Metodo non indicato1993-03-28 – fine sconosciuta
Vulcani nelle vicinanze
Link esterni
⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.