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Volcán Cerro Machín

Machin

成層火山 · Colombia · 2749m

Two central lava domes of Cerro Machín volcano are seen here from the SW. A 3-km-wide caldera, whose rim is the horizontal change in slope across the center of the photo, opens towards the south. Late-Holocene eruptions produced block-and-ash flows that traveled to the west and south, beyond the caldera. Deposits from some of these eruptions form the eroded slopes in the lower part of the photo along the valley of the Toche River.
Two central lava domes of Cerro Machín volcano are seen here from the SW. A 3-km-wide caldera, whose rim is the horizontal change in slope across the center of the photo, opens towards the south. Late-Holocene eruptions produced block-and-ash flows that traveled to the west and south, beyond the caldera. Deposits from some of these eruptions form the eroded slopes in the lower part of the photo along the valley of the Toche River. · 写真: Photo by José Macías, 1996 (Universidad Autómona de México). · Wikimedia Commons
タイプ
成層火山
国
Colombia
地域
South America Volcanic Regions / Northern Andean Volcanic Arc
標高
2749m
座標
4.487, -75.389
最終噴火
1180年
テクトニクス環境
Subduction zone / Continental crust (> 25 km)
火山地形
Composite
主要岩石
Dacite
地質学的概要

The small Cerro Machín stratovolcano lies at the southern end of the Ruiz-Tolima massif about 20 km WNW of the city of Ibagué. A 3-km-wide caldera is breached to the south and contains three forested dacitic lava domes. Voluminous pyroclastic flows traveled up to 40 km away during eruptions in the mid-to-late Holocene, perhaps associated with formation of the caldera. Late-Holocene eruptions produced dacitic block-and-ash flows that traveled through the breach in the caldera rim to the west and south. The latest known eruption of took place about 800 years ago.

Wikipedia の要約

英語版の要約

Cerro Machín is a stratovolcano located in Tolima Department, Colombia. Considered the most dangerous active volcano of Colombia, Cerro Machin is a volcanic plug that is approximately the same age as the Ruiz-Tolima Massif and has the appearance of being part of that volcanic system.

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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
3800 BCE~3601 BCE · 1件 · 最大 VEI ?2804 BCE~2605 BCE · 1件 · 最大 VEI ?2406 BCE~2206 BCE · 1件 · 最大 VEI ?2206 BCE~2007 BCE · 1件 · 最大 VEI ?812 BCE~613 BCE · 1件 · 最大 VEI ?582~782 · 1件 · 最大 VEI ?981~1180 · 1件 · 最大 VEI ?3800 BCE2605 BCE1410 BCE214 BCE981

詳細タイムライン

  1. 1180年 (±150年)VEI ?地質学的推定
    1180 ~ 進行中
  2. 750年VEI ?地質学的推定
    750 ~ 進行中
  3. 紀元前 650年VEI ?地質学的推定
    BCE 650 ~ 進行中
  4. 紀元前 2100年 (±200年)VEI ?地質学的推定
    BCE 2100 ~ 進行中
  5. 紀元前 2240年 (±300年)VEI ?地質学的推定
    BCE 2240 ~ 進行中
  6. 紀元前 2650年VEI ?地質学的推定
    BCE 2650 ~ 進行中
  7. 紀元前 3800年 (±150年)VEI ?地質学的推定
    BCE 3800 ~ 進行中

外部リンク

⚠ 参考情報です。緊急対応には使用しないでください。