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Michinmahuida

Stratovolkan · 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
Tipe
Stratovolkan
Negara
Chile
Wilayah
South America Volcanic Regions / Southern Andean Volcanic Arc
Ketinggian
2452 m
Koordinat
-42.799, -72.445
Letusan terakhir
1835
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

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.

Ringkasan Wikipedia

Ringkasan Inggris

Michinmahuida is a glaciated stratovolcano located in Los Lagos Region of Chile. It lies about 15 km east of Chaitén volcano, and was extensively covered in ash during the 2008 eruption of Chaitén. The stratovolcano lies above the regional Liquine-Ofqui Fault zone, and the ice-covered massif towers over the south portion of Pumalín Park. It has a summit elevation of 2,450 meters above sea level.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
8400 BCE~8056 BCE · 1 letusan · VEI maks. 65649 BCE~5305 BCE · 1 letusan · VEI maks. 5540~884 · 1 letusan · VEI maks. ?1227~1571 · 1 letusan · VEI maks. 41571~1915 · 6 letusan · VEI maks. 28400 BCE5993 BCE3242 BCE836 BCE1571

Garis waktu rinci

  1. 1915 (±25 tahun)VEI 2Perkiraan geologi
    1915 – Berlangsung
  2. 1835VEI 0Teramati
    1835-02-20 – 1835-03-15
  3. 1834VEI 2Teramati
    1834-11-25 – Berlangsung
  4. 1775 (±40 tahun)VEI 2Perkiraan geologi
    1775 – Berlangsung
  5. 1742VEI 2Teramati
    1742 – Berlangsung
  6. 1650 (±50 tahun)VEI ?Perkiraan geologi
    1650 – Berlangsung
  7. 1550 (±100 tahun)VEI 4Perkiraan geologi
    1550 – Berlangsung
  8. 700 (±100 tahun)VEI ?Perkiraan geologi
    700 – Berlangsung
  9. 5500 SM (±150 tahun)VEI 5Perkiraan geologi
    BCE 5500 – Berlangsung
  10. 8400 SM (±150 tahun)VEI 6Perkiraan geologi
    BCE 8400 – Berlangsung

Tautan eksternal

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