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El Misti

Misti, El

Stratovulcano · Peru · 5793 m

El Misti, Perú's best known volcano, is a symmetrical stratovolcano that towers above the city of Arequipa. It is seen here from the west at the margin of Arequipa's airport. The modern symmetrical cone has a small, 1.5-km-wide summit caldera containing nested craters. It caps an older Pleistocene volcano that collapsed, producing debris avalanches to the west and SW. El Misti's most recent activity has been dominantly pyroclastic. Historical eruptions date back to the 15th century.
El Misti, Perú's best known volcano, is a symmetrical stratovolcano that towers above the city of Arequipa. It is seen here from the west at the margin of Arequipa's airport. The modern symmetrical cone has a small, 1.5-km-wide summit caldera containing nested craters. It caps an older Pleistocene volcano that collapsed, producing debris avalanches to the west and SW. El Misti's most recent activity has been dominantly pyroclastic. Historical eruptions date back to the 15th century. · Foto: Photo by Norm Banks, 1988 (U.S. Geological Survey). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Peru
Regione
South America Volcanic Regions / Central Andean Volcanic Arc
Altitudine
5793 m
Coordinate
-16.299, -71.406
Ultima eruzione
1985
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

El Misti is a symmetrical andesitic stratovolcano with nested summit craters immediately NE of the city of Arequipa, Peru. Eruptions from the active cone began about 13,700 and 11,300 years ago, within a 1.5 x 2 km caldera that underwent collapse about 50,000 years ago. A large scoria cone has grown with the 830-m-wide outer summit crater. At least 20 tephra-fall deposits and numerous pyroclastic-flow deposits have been documented during the past 50,000 years, including a pyroclastic flow that traveled 12 km S about 2,000 years ago. The most recent activity has been dominantly pyroclastic, and strong winds have formed a parabolic dune field of volcanic ash extending up to 20 km downwind. An eruption in the 15th century affected nearby Inca inhabitants. Some reported eruptions may represent increased fumarolic activity.

Sintesi da Wikipedia

El Misti, noto anche come “Guagua-Putina” è uno stratovulcano situato nel Perù meridionale, vicino alla città di Arequipa. Con la sua cima innevata in inverno e il cono simmetrico, El Misti spicca per 5.822 m sul livello del mare e giace tra il monte Chachani e il vulcano Pikchu Pikchu.

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
7190 BCE~6884 BCE · 1 eruzioni · VEI max. ?5661 BCE~5355 BCE · 1 eruzioni · VEI max. ?4132 BCE~3826 BCE · 1 eruzioni · VEI max. ?3520 BCE~3214 BCE · 1 eruzioni · VEI max. ?2297 BCE~1991 BCE · 1 eruzioni · VEI max. ?462 BCE~156 BCE · 1 eruzioni · VEI max. ?156 BCE~150 · 2 eruzioni · VEI max. 4456~762 · 1 eruzioni · VEI max. ?1068~1373 · 1 eruzioni · VEI max. ?1373~1679 · 4 eruzioni · VEI max. 21679~1985 · 8 eruzioni · VEI max. 27190 BCE5049 BCE2602 BCE462 BCE1679

Cronologia dettagliata

  1. 1985VEI 1Osservata
    1985-07-02 – In corso
  2. 1870VEI 1Stima geologica
    1870-03 – In corso
  3. 1869VEI 1Stima geologica
    1869-09 – In corso
  4. 1831VEI 1Stima geologica
    1831-08 – In corso
  5. 1830VEI 1Stima geologica
    1830-08 – In corso
  6. 1826VEI 1Stima geologica
    1826-08 – In corso
  7. 1787VEI 1Osservata
    1787-07-28 – 1787-10-10
  8. 1784VEI 2Osservata
    1784-07-09 – In corso
  9. 1677VEI 2Osservata
    1677-05-02 – In corso
  10. 1599VEI 1Stima geologica
    1599 – In corso
  11. 1542VEI 1Stima geologica
    1542 – In corso
  12. 1454 (±16 anni)VEI 2Osservata
    1454 – In corso
  13. 1350 (±50 anni)VEI ?Stima geologica
    1350 – In corso
  14. 760 (±100 anni)VEI ?Stima geologica
    760 – In corso
  15. 90 (±300 anni)VEI ?Stima geologica
    90 – In corso
  16. 80 a.C. (±75 anni)VEI 4Stima geologica
    BCE 80 – In corso
  17. 310 a.C. (±100 anni)VEI ?Stima geologica
    BCE 310 – In corso
  18. 2230 a.C. (±200 anni)VEI ?Stima geologica
    BCE 2230 – In corso
  19. 3510 a.C. (±150 anni)VEI ?Stima geologica
    BCE 3510 – In corso
  20. 4020 a.C. (±200 anni)VEI ?Stima geologica
    BCE 4020 – In corso
  21. 5390 a.C. (±75 anni)VEI ?Stima geologica
    BCE 5390 – In corso
  22. 7190 a.C. (±150 anni)VEI ?Stima geologica
    BCE 7190 – In corso

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