アルゼンチン · 成層火山
Aracar
- タイプ
- 成層火山
- 標高
- 6095m
- 最終噴火
- 不明
- タイプ
- 成層火山
- 国
- アルゼンチン
- 地域
- 南アメリカ / Central Andean Volcanic Arc
- 標高
- 6095m
- 座標
- -24.290, -67.783
- 最終噴火
- 不明
- 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
Aracar is a steep-sided stratovolcano with a youthful-looking summit crater 1-1.5 km in diameter that contains a small lake. It is located just east of the Argentina-Chile border. The volcano was constructed during three eruptive cycles dating back to the Pliocene. The andesitic stratovolcano overlies dacitic lava domes. Lava flows found at the base of the volcano below 4500 m elevation are relatively well preserved, but upper-flank lavas, often an indication of youthful activity, are not present (de Silva, 2007 pers. comm.). There were reports of possible ash columns from the summit in 1993, but it is not known whether these were rockfall dust or eruption plumes.
Wikipedia の要約
英語版の要約Aracar is a large conical stratovolcano in northwestern Argentina, just east of the Chilean border. It has a main summit crater about 1–1.5 kilometres (0.6–0.9 mi) in diameter and sometimes contains crater lakes and a secondary crater. The volcano has formed, starting during the Pliocene, on top of a lava platform and an older basement. Constructed on a base with an altitude of 4,100 metres (13,500 ft), it covers a surface area of 192.4 square kilometres (74.3 sq mi) and has a volume of 148 cubic kilometres (36 cu mi). The only observed volcanic activity was a possible steam or ash plume on March 28, 1993, seen from the village of Tolar Grande about 50 km (31 mi) southeast of the volcano, but with no evidence of deformation of the volcano from satellite observations. Inca archeological sites are found on the volcano.
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噴火履歴
1件の記録用語集詳細タイムライン
- 1993年VEI 2根拠の記載なし1993-03-28 ~ 終了日不明
近くの火山
外部リンク
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