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Misti

Misti, El

Stratovolkan · 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
Tipe
Stratovolkan
Negara
Peru
Wilayah
Amerika Selatan / Central Andean Volcanic Arc
Ketinggian
5793 m
Koordinat
-16.299, -71.406
Letusan terakhir
1985
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

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.

Ringkasan Wikipedia

Ringkasan Inggris

Misti is a volcano in the southern Peruvian Andes, rising above Arequipa, Peru’s second-largest city. It has a steep conical profile and two nested summit craters. The inner crater contains an active lava plug or dome, pierced by vents that emit volcanic gases. The summit reaches 5822 m above sea level, on the rim of the outer crater. Snow covers the summit but does not persist, and there are no glaciers. The upper slopes are largely barren, while lower elevations support scrub and other bushy vegetation.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
7190 BCE~6884 BCE · 1 letusan · VEI maks. ?5661 BCE~5355 BCE · 1 letusan · VEI maks. ?4132 BCE~3826 BCE · 1 letusan · VEI maks. ?3520 BCE~3214 BCE · 1 letusan · VEI maks. ?2297 BCE~1991 BCE · 1 letusan · VEI maks. ?462 BCE~156 BCE · 1 letusan · VEI maks. ?156 BCE~150 · 2 letusan · VEI maks. 4456~762 · 1 letusan · VEI maks. ?1068~1373 · 1 letusan · VEI maks. ?1373~1679 · 4 letusan · VEI maks. 21679~1985 · 8 letusan · VEI maks. 27190 BCE5049 BCE2602 BCE462 BCE1679

Garis waktu rinci

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

Tautan eksternal

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