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Michinmahuida

成層火山 · Chile · 2452m

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. · 写真: NASA International Space Station image ISS006-E-42260, 2003 (http://eol.jsc.nasa.gov/). · Wikimedia Commons
タイプ
成層火山
国
Chile
地域
South America Volcanic Regions / Southern Andean Volcanic Arc
標高
2452m
座標
-42.799, -72.445
最終噴火
1835年
テクトニクス環境
Subduction zone / Continental crust (> 25 km)
火山地形
Composite
主要岩石
Andesite / Basaltic Andesite
地質学的概要

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.

Wikipedia の要約

英語版の要約

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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噴火履歴

概要 (VEI時系列)
バーをクリックすると個別の噴火が表示されます
8400 BCE~8056 BCE · 1件 · 最大 VEI 65649 BCE~5305 BCE · 1件 · 最大 VEI 5540~884 · 1件 · 最大 VEI ?1227~1571 · 1件 · 最大 VEI 41571~1915 · 6件 · 最大 VEI 28400 BCE5993 BCE3242 BCE836 BCE1571

詳細タイムライン

  1. 1915年 (±25年)VEI 2地質学的推定
    1915 ~ 進行中
  2. 1835年VEI 0観測記録
    1835-02-20 ~ 1835-03-15
  3. 1834年VEI 2観測記録
    1834-11-25 ~ 進行中
  4. 1775年 (±40年)VEI 2地質学的推定
    1775 ~ 進行中
  5. 1742年VEI 2観測記録
    1742 ~ 進行中
  6. 1650年 (±50年)VEI ?地質学的推定
    1650 ~ 進行中
  7. 1550年 (±100年)VEI 4地質学的推定
    1550 ~ 進行中
  8. 700年 (±100年)VEI ?地質学的推定
    700 ~ 進行中
  9. 紀元前 5500年 (±150年)VEI 5地質学的推定
    BCE 5500 ~ 進行中
  10. 紀元前 8400年 (±150年)VEI 6地質学的推定
    BCE 8400 ~ 進行中

外部リンク

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