Hollister Ridge
割れ目火口 · Undersea Features · 1000m (海底)
- タイプ
- 割れ目火口
- 国
- Undersea Features
- 地域
- Southern Pacific Volcanic Regions / Pacific-Antarctic Ridge Volcanic Province
- 標高
- 1000m (海底)
- 座標
- -53.998, -139.845
- 最終噴火
- 不明
- テクトニクス環境
- Intraplate / Oceanic crust (< 15 km)
- 火山地形
- Cluster
- 主要岩石
- No Data (checked)
地質学的概要
Acoustic T-waves from a seismic swarm, possibly associated with magmatic activity, were recorded in 1991 from a location 130 km S of the Eltanin Fracture Zone (Bulletin of the Global Volcanism Network, 1991). The source was near a seamount shallower than 1,000 m in depth near the Pacific-Antarctic Ridge.
Wikipedia の要約
英語版の要約Hollister Ridge is a group of seamounts in the Pacific Ocean. They lie west from the Pacific-Antarctic Ridge and form three ridges that form a line; one of the ridges rises to a depth of 100 metres (330 ft) and in the past formed an island. The seamounts are composed out of basaltic and other rocks and their ages range from about 2.5 million years ago to latest Pleistocene; an acoustic swarm recorded in the southern Pacific Ocean in 1991-1992 is considered to be the manifestation of a historical eruption of the Hollister Ridge.
Wikipedia · CC BY-SA · 記事全文を読む →
噴火履歴
詳細タイムライン
- 1991年VEI 0地質学的推定1991-03-11 ~ 1991-03-19Seamount by Pacific-Antarctic Ridge?
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。