カナダ · 楯状火山
Heart Peaks
- タイプ
- 楯状火山
- 標高
- 2012m
- 最終噴火
- 不明
- タイプ
- 楯状火山
- 国
- カナダ
- 地域
- 北アメリカ / Northern Cordilleran Volcanic Province
- 標高
- 2012m
- 座標
- 58.600, -131.970
- 最終噴火
- 不明
- テクトニクス環境
- プレート内部 / 大陸地殻 (> 25 km)
- 火山地形
- 楯状火山
- 主要岩石
- 玄武岩 / ピクライト質玄武岩
地質学的概要
The late-Cenozoic Heart Peaks shield volcano, located NW of Level Mountain in NW British Columbia, is capped by rhyolitic lava domes. The basal shield rises above local topography and is composed of flat-lying basaltic and trachybasaltic lava flows and pyroclastics. The most recent eruptive activity is of dominantly Pleistocene age; late-stage Holocene activity is uncertain (Edwards and Russell, 2000; Edwards 2004, pers. comm.). The volcano rises above the Heart Peaks Plateau, which is sculpted on all sides by tributaries of the Inklin River. The colorful bright green and pink, steep-sided lava domes of the Heart Peaks Formation are formed of porphyritic rhyolitic and minor trachytic rocks and occupy the western side of the plateau.
Wikipedia の要約
英語版の要約Heart Peaks, originally known as the Heart Mountains, is a mountain massif in the Northern Interior of British Columbia, Canada. It is 90 km (56 mi) northwest of the small community of Telegraph Creek and just southwest of Callison Ranch. With a maximum elevation of 2,012 m (6,601 ft), it rises above the surrounding landscape on the Nahlin Plateau, which is part of the western Stikine Plateau. Heart Peaks has been an area of prospecting since the 1980s with the discovery of precious metals.
Wikipedia · CC BY-SA · 記事全文を読む →
噴火履歴
用語集詳細タイムライン
噴火記録はありません。
近くの火山
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。