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Krysuvik-Trolladyngja

火口列 · Iceland · 360m

The Krýsuvík-Trölladyngja volcanic system consists of NE-SW-trending crater rows and small shield volcanoes cutting the central Reykjanes Peninsula west of Kleifarvatn lake (top center). Several eruptions have taken place since the settlement of Iceland, including the emplacement of a large lava flow from the Ogmundargigar crater row around the 12th century. The lava flow was confined to the valley between the two parallel ridges (top left), before reaching the southern coast of the Reykjanes Peninsula (lower right) along a broad front.
The Krýsuvík-Trölladyngja volcanic system consists of NE-SW-trending crater rows and small shield volcanoes cutting the central Reykjanes Peninsula west of Kleifarvatn lake (top center). Several eruptions have taken place since the settlement of Iceland, including the emplacement of a large lava flow from the Ogmundargigar crater row around the 12th century. The lava flow was confined to the valley between the two parallel ridges (top left), before reaching the southern coast of the Reykjanes Peninsula (lower right) along a broad front. · 写真: Photo by Oddur Sigurdsson, 1983 (Icelandic National Energy Authority). · Wikimedia Commons
タイプ
火口列
国
Iceland
地域
Atlantic Ocean Volcanic Regions / Iceland Neovolcanic Rift Volcanic Province
標高
360m
座標
63.917, -22.067
最終噴火
1340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 Krýsuvík-Trölladyngja volcanic system is described by the Catalogue of Icelandic Volcanoes as an approximately 50-km-long composite fissure swarm trending about N38°E, including a 30-km-long swarm of fissures, with no central volcano. It is one of the volcanic systems arranged en-echelon along the Reykjanes Peninsula west of Kleifarvatn lake. The Fagradalsfjall and Krýsuvík fissure swarms are considered splits or secondary swarms of the Krýsuvík–Trölladyngja volcanic system. Small shield volcanoes have produced a large portion of the erupted volume within the system. Several eruptions have taken place since the settlement of Iceland, including the eruption of a large basaltic lava flow from the Ogmundargigar crater row around the 12th century. The latest eruption, identified through tephrochronology, took place during the 14th century.

Wikipedia の要約

英語版の要約

The volcanic system of Krýsuvík, is situated in the south–west of Iceland on the Reykjanes peninsula. It is located in the middle of Reykjanes and on the divergent plate boundary of the Mid-Atlantic Ridge which traverses Iceland. It was named after the Krýsuvík area which is part of it and consists of a fissure system without a central volcano. However, there are some indications—namely, the discovery by geophysical methods of what scientists interpret as a buried caldera, combined with the well-known, vigorous hydrothermal system above it—that an embryonic central magma chamber may already exist or be actively developing.

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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
8500 BCE~8172 BCE · 1件 · 最大 VEI 06204 BCE~5876 BCE · 1件 · 最大 VEI 05548 BCE~5220 BCE · 1件 · 最大 VEI 21284 BCE~956 BCE · 1件 · 最大 VEI 0300 BCE~28 · 1件 · 最大 VEI 2684~1012 · 1件 · 最大 VEI 21012~1340 · 5件 · 最大 VEI 18500 BCE6204 BCE3580 BCE1284 BCE1012

詳細タイムライン

  1. 1340年VEI 1地質学的推定
    1340 ~ 進行中
    Tradarfjöll
  2. 1325年VEI 1地質学的推定
    1325 ~ 進行中
    Elborg vid Trolladyngju
  3. 1188年VEI 1観測記録
    1188 ~ 進行中
    Mavahlidargigir
  4. 1151年VEI 1観測記録
    1151 ~ 進行中
    Ogmundargigar and other vents
  5. 1075年 (±75年)VEI 0地質学的推定
    1075 ~ 進行中
    Gvendarselsgigar
  6. 900年VEI 2地質学的推定
    900 ~ 進行中
    Melholl, Afstapahraun
  7. 紀元前 190年 (±75年)VEI 2地質学的推定
    BCE 190 ~ 進行中
    Obrinnisholar
  8. 紀元前 1060年 (±75年)VEI 0地質学的推定
    BCE 1060 ~ 進行中
    Sandfellskofagigir
  9. 紀元前 5290年 (±150年)VEI 2地質学的推定
    BCE 5290 ~ 進行中
    Burfell
  10. 紀元前 6000年VEI 0地質学的推定
    BCE 6000 ~ 進行中
    Hrútagjár
  11. 紀元前 8500年VEI 0地質学的推定
    BCE 8500 ~ 進行中
    Hagafell

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。