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Minchinmavida

Michinmahuida

Stratovulcano · Chile · 2452 m

Glacier-covered Volcán Minchinmávida is elongated along a NE-SW direction. The volcano has a mostly obscured 3-km-wide caldera, and a youthful eruptive center is located on the ENE side of the complex. An eruption from Minchinmávida was reported in 1742. Darwin observed the volcano in activity in 1834 on his renowned voyage that took him to the Galápagos Islands.
Glacier-covered Volcán Minchinmávida is elongated along a NE-SW direction. The volcano has a mostly obscured 3-km-wide caldera, and a youthful eruptive center is located on the ENE side of the complex. An eruption from Minchinmávida was reported in 1742. Darwin observed the volcano in activity in 1834 on his renowned voyage that took him to the Galápagos Islands. · Foto: NASA International Space Station image ISS006-E-42260, 2003 (http://eol.jsc.nasa.gov/). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Chile
Regione
South America Volcanic Regions / Southern Andean Volcanic Arc
Altitudine
2452 m
Coordinate
-42.799, -72.445
Ultima eruzione
1835
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

The glacier-covered basaltic-to-andesitic Volcán Michinmahuida, located west of Lago Reñihue, has a saddle-shaped summit with an elongated 3-km-wide caldera. The massive edifice is elongated in a NE-SW direction, and a youthful eruptive center is located on the ENE side of the complex. A major explosive eruption at the beginning of the Holocene produced the Amarillo Ignimbrite that may have created the now ice-filled summit caldera, and Holocene tephra deposits from summit and flank vents have been identified. An eruption was reported in 1742, and Charles Darwin observed activity in 1834. The latest known eruption, February-March 1835, produced a lava flow from a flank crater and lahars that reached the coast at Punta Chana.

Sintesi da Wikipedia

Il Michinmahuida è uno stratovulcano nelle Ande, nel sud del Cile, alto 2.404 m s.l.m.., attualmente quiescente.

Wikipedia · CC BY-SA · Leggi l'articolo completo →

Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
8400 BCE~8056 BCE · 1 eruzioni · VEI max. 65649 BCE~5305 BCE · 1 eruzioni · VEI max. 5540~884 · 1 eruzioni · VEI max. ?1227~1571 · 1 eruzioni · VEI max. 41571~1915 · 6 eruzioni · VEI max. 28400 BCE5993 BCE3242 BCE836 BCE1571

Cronologia dettagliata

  1. 1915 (±25 anni)VEI 2Stima geologica
    1915 – In corso
  2. 1835VEI 0Osservata
    1835-02-20 – 1835-03-15
  3. 1834VEI 2Osservata
    1834-11-25 – In corso
  4. 1775 (±40 anni)VEI 2Stima geologica
    1775 – In corso
  5. 1742VEI 2Osservata
    1742 – In corso
  6. 1650 (±50 anni)VEI ?Stima geologica
    1650 – In corso
  7. 1550 (±100 anni)VEI 4Stima geologica
    1550 – In corso
  8. 700 (±100 anni)VEI ?Stima geologica
    700 – In corso
  9. 5500 a.C. (±150 anni)VEI 5Stima geologica
    BCE 5500 – In corso
  10. 8400 a.C. (±150 anni)VEI 6Stima geologica
    BCE 8400 – In corso

Link esterni

⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.