チリ · 成層火山
Nevado de Longaví
Longavi, Nevado de
- タイプ
- 成層火山
- 標高
- 3175m
- 最終噴火
- -4890年
- タイプ
- 成層火山
- 国
- チリ
- 地域
- 南アメリカ / 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
- 沈み込み帯 / 大陸地殻 (> 25 km)
- 火山地形
- 複成火山
- 主要岩石
- 安山岩 / 玄武岩質安山岩
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
1件の記録用語集詳細タイムライン
- 紀元前 4890年 (±75年)VEI ?地質学的推定紀元前 4890 ~ 終了日不明
近くの火山
外部リンク
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