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Nevado de Longaví

Longavi, Nevado de

成層火山 · Chile · 3175m

The conical, glacier-clad Nevado de Longaví volcano is seen from the SE. In the foreground is a Holocene block-and-ash flow deposit. This late-Pleistocene to Holocene andesitic stratovolcano was constructed over a basement of sedimentary and granitic rocks. A small lava dome forms the 3242-m-high summit of Longaví. No historical eruptions are known, although fumarolic activity continues.
The conical, glacier-clad Nevado de Longaví volcano is seen from the SE. In the foreground is a Holocene block-and-ash flow deposit. This late-Pleistocene to Holocene andesitic stratovolcano was constructed over a basement of sedimentary and granitic rocks. A small lava dome forms the 3242-m-high summit of Longaví. No historical eruptions are known, although fumarolic activity continues. · 写真: Photo by José Naranjo, 2001 (Servico Nacional de Geologica y Mineria). · Wikimedia Commons
タイプ
成層火山
国
Chile
地域
South America Volcanic Regions / Southern Andean Volcanic Arc
標高
3175m
座標
-36.196, -71.164
最終噴火
-4890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 conical Nevado de Longaví is a late-Pleistocene to Holocene, dominantly andesitic stratovolcano constructed over a basement of Tertiary volcaniclastic and granitic rocks. Two edifice-collapse events modified the E and SW flanks of a pre-Holocene edifice, and Holocene activity has been concentrated at the summit and on the E flanks. Andesitic-to-dacitic lava domes occupy the summit region. The latest eruptions produced a lava dome in the upper part of the collapse scarp and summit region that partially collapsed to the E, forming block-and-ash flow deposits. Fumarolic activity has been reported.

Wikipedia の要約

英語版の要約

Nevado de Longaví is a volcano in the Andes of central Chile. The 3,242 m (10,636 ft) high volcano lies in the Linares Province, which is part of the Maule Region. It features a summit crater and several parasitic vents. The volcano is constructed principally from lava flows. Two collapses of the edifice have carved collapse scars into the volcano, one on the eastern slope known as Lomas Limpias and another on the southwestern slope known as Los Bueye. The volcano features a glacier and the Achibueno and Blanco rivers originate on the mountain.

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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
4890 BCE~4890 BCE · 1件 · 最大 VEI ?4890 BCE4890 BCE4889 BCE4889 BCE4889 BCE

詳細タイムライン

  1. 紀元前 4890年 (±75年)VEI ?地質学的推定
    BCE 4890 ~ 進行中

外部リンク

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