スキャルドブレイズゥル
Prestahnukur
割れ目火口 · Iceland · 1385m
- タイプ
- 割れ目火口
- 国
- Iceland
- 地域
- Atlantic Ocean Volcanic Regions / Iceland Neovolcanic Rift Volcanic Province
- 標高
- 1385m
- 座標
- 64.583, -20.666
- 最終噴火
- -3350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 Prestahnúkur volcanic system is located on the W side of the Langjökull icecap at the west margin of the Western Volcanic Zone, and overlaps with the Hengill volcanic system north of Lake Þingvallavatn. It is about 90 km long and 15 km wide, with a subglacially erupted rhyolite peak and associated rift zones to the N and SW that have erupted during the Holocene. A large part of the volcanic system is underlain by early to mid Pleistocene plateau basalts. Olivine tholeiite basalt lava shields have erupted during the Holocene.
Wikipedia の要約
英語版の要約Skjaldbreiður is an Icelandic lava shield formed in a huge and quite protracted eruption series from about roughly 9,500 years ago. The extensive lava fields which were produced by this eruption, flowed southwards, and formed the basin of Þingvallavatn, Iceland's largest lake, and Þingvellir, the "Parliament Plains" where the Icelandic national assembly, the Alþing was founded in 930.
Wikipedia · CC BY-SA · 記事全文を読む →
噴火履歴
詳細タイムライン
- 紀元前 3350年VEI 0地質学的推定BCE 3350 ~ 進行中Sköflungur
- 紀元前 6950年VEI 0地質学的推定BCE 6950 ~ 進行中Geitlandshraun II
- 紀元前 7550年 (±500年)VEI 0地質学的推定BCE 7550 ~ 進行中Skjaldbreidur
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。