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Lonquimay

成層火山 · Chile · 2832m

Lonquimay (left) is a small, flat-topped, symmetrical stratovolcano of late-Pleistocene to dominantly Holocene age located immediately SE of the largely Pleistocene Tolguaca volcano (extreme right). The Cordón Fissural Oriental fissure zone extends 10 km NE of Lonquimay and has produced a series of vents and cinder cones that have been the source of voluminous lava flows in historical time. Major lava flows erupted during 1887-90 and 1988-90 traveled up to 10 km from their NE-flank vents.
Lonquimay (left) is a small, flat-topped, symmetrical stratovolcano of late-Pleistocene to dominantly Holocene age located immediately SE of the largely Pleistocene Tolguaca volcano (extreme right). The Cordón Fissural Oriental fissure zone extends 10 km NE of Lonquimay and has produced a series of vents and cinder cones that have been the source of voluminous lava flows in historical time. Major lava flows erupted during 1887-90 and 1988-90 traveled up to 10 km from their NE-flank vents. · 写真: Photo by Norm Banks, 1990 (U.S. Geological Survey). · Wikimedia Commons
タイプ
成層火山
国
Chile
地域
South America Volcanic Regions / Southern Andean Volcanic Arc
標高
2832m
座標
-38.379, -71.586
最終噴火
1990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

Lonquimay is a small, flat-topped, symmetrical stratovolcano of late-Pleistocene to dominantly Holocene age immediately SE of Tolguaca volcano. A glacier fills its summit crater and flows down the S flank. It is dominantly andesitic, but basalt and dacite are also found. The prominent NE-SW Cordón Fissural Oriental fissure zone cuts across the entire volcano. A series of NE-flank vents and scoria cones were built along an E-W fissure, some of which have been the source of voluminous lava flows, including those during 1887-90 and 1988-90, that extended out to 10 km.

Wikipedia の要約

英語版の要約

Lonquimay Volcano is a stratovolcano of late-Pleistocene to dominantly Holocene age, with the shape of a truncated cone. The cone is largely andesitic, though basaltic and dacitic rocks are present. It is located in the La Araucanía Region of Chile, immediately SE of Tolhuaca volcano. Sierra Nevada and Llaima are their neighbors to the south. The snow-capped volcano lies within the protected area Malalcahuello-Nalcas.

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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
1853~1867 · 1件 · 最大 VEI 31880~1894 · 1件 · 最大 VEI 31921~1934 · 1件 · 最大 VEI 21934~1948 · 1件 · 最大 VEI ?1975~1988 · 1件 · 最大 VEI 318531880192119481975

詳細タイムライン

  1. 1988年VEI 3観測記録
    1988-12-25 ~ 1990-01-24
    NE flank (Navidad Crater)
  2. 1940年VEI ?地質学的推定
    1940-02 ~ 進行中
  3. 1933年VEI 2観測記録
    1933-01-04 ~ 進行中
  4. 1887年VEI 3観測記録
    1887-06-02 ~ 1890-01
    NE flank
  5. 1853年VEI 3観測記録
    1853-02 ~ 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。