Southern EPR-Segment I

Southern EPR at 18.5°S (Segment I)

割れ目火口 · Undersea Features · 2600m (海底)

Black smoker vents emitting low-chlorinity fluids at 374°C were photographed at the "RM28" site at 18°26’S on Segment I of the Southern East Pacific Rise in November 1994 from the Japanese submersible Shinkai 6500. The narrow axial crest of Segment I of the Southern East Pacific Rise in some places is less than 50 m wide. The largest lava flow field in this area is the Animal Farm flow, named after a thriving low-temperature hydrothermal site discovered during a 1993 submersible expedition. · 写真: Image courtesy of NOAA Vents Program, 1994 (www.pmel.noaa.gov/vents/chemistry/images/).

タイプ: 割れ目火口
国: Undersea Features
地域: Southern Pacific Volcanic Regions / Southern East Pacific Rise Volcanic Province
標高: 2600m (海底)
座標: -18.530, -113.420
最終噴火: 1915年
テクトニクス環境: Rift zone / Oceanic crust (< 15 km)
火山地形: Cluster
主要岩石: Basalt / Picro-Basalt

地質学的概要

The narrow axial crest of Segment I of the Southern East Pacific Rise in some places is less than 50 m wide. An axial dome is located along the southern part of the segment. The largest lava flow field in this segment is the Animal Farm flow, named after a thriving low-temperature hydrothermal site discovered during a submersible expedition in 1993. The Animal Farm lava flow was dated by magnetic paleointensity measurements at about 1880-1950 CE, and older flows were dated by similar techniques to the 17th and 19th centuries.

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

詳細タイムライン

1915年 (±40年)VEI 0地質学的推定
1915 ~ 進行中
1860年VEI 0地質学的推定
1860 ~ 進行中
1620年VEI 0地質学的推定
1620 ~ 進行中

外部リンク

日本語版Wikipediaには未登録です。Wikidataで作成できます。
🔗 Smithsonian GVP 原典ページ

⚠ 参考情報です。緊急対応には使用しないでください。