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Água de Pau

Agua de Pau

成層火山 · Portugal · 947m

Lagoa do Fogo, seen here from the west, partially fills the younger of two Pleistocene calderas on Agua de Pau stratovolcano in central Sao Miguel Island. The walls of the caldera surrounding the lake rise to a maximum of about 370 m above the surface. Eruptions have occurred both inside the caldera and on the flanks, where multiple cones and domes can be found. Two major explosive eruptions have occurred in the Holocene from the caldera: the Ribeira Cha (8,000 to 12,000 years ago) and Fogo A (about 4,600 years ago).
Lagoa do Fogo, seen here from the west, partially fills the younger of two Pleistocene calderas on Agua de Pau stratovolcano in central Sao Miguel Island. The walls of the caldera surrounding the lake rise to a maximum of about 370 m above the surface. Eruptions have occurred both inside the caldera and on the flanks, where multiple cones and domes can be found. Two major explosive eruptions have occurred in the Holocene from the caldera: the Ribeira Cha (8,000 to 12,000 years ago) and Fogo A (about 4,600 years ago). · 写真: Photo by Rick Wunderman, 1977 (Smithsonian Institution). · Wikimedia Commons
タイプ
成層火山
国
Portugal
地域
Atlantic Ocean Volcanic Regions / Azores-Terceira Rift Volcanic Province
標高
947m
座標
37.770, -25.470
最終噴火
1564年
テクトニクス環境
Rift zone / Oceanic crust (< 15 km)
火山地形
Composite
主要岩石
Trachyte / Trachydacite
地質学的概要

The Agua de Pau stratovolcano in central Sao Miguel Island contains an outer 4 x 7 km caldera formed about 30,000-45,000 years ago and an inner 2.5 x 3 km caldera that was created about 15,000 years ago. The younger caldera is partially filled by the Lagoa do Fogo caldera lake. Several post-caldera lava domes were emplaced on the northern and western flanks, but activity in the caldera did not resume until about 5000 years ago. The 3 km3 Fogo-A plinian pumice fall deposit was emplaced at this time. Numerous flank cinder cones mark radial and concentric fissures, some of which have been active during historical time. The latest trachytic explosive eruption took place during 1563. Prominent hot springs are located on the NW flank.

Wikipedia の要約

英語版の要約

Água de Pau Massif is a stratovolcanic complex, located in the central part of the island of São Miguel, in the Portuguese archipelago of the Azores. More recognizable for the Lagoa do Fogo at its centre, the volcanic complex includes centuries of geomorphological structures that include lava domes, cones and encrusted lava flows that have marked its history from, the last, 45,000 years BC.

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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
6750 BCE~6473 BCE · 1件 · 最大 VEI ?4810 BCE~4533 BCE · 1件 · 最大 VEI ?3147 BCE~2870 BCE · 1件 · 最大 VEI 52316 BCE~2039 BCE · 1件 · 最大 VEI ?2039 BCE~1762 BCE · 1件 · 最大 VEI 31484 BCE~1207 BCE · 1件 · 最大 VEI 499 BCE~178 · 1件 · 最大 VEI ?455~733 · 1件 · 最大 VEI ?1287~1564 · 2件 · 最大 VEI 56750 BCE4810 BCE2593 BCE653 BCE1287

詳細タイムライン

  1. 1564年VEI 2観測記録
    1564-02-10 ~ 1564-02-12
    Lagoa do Fogo caldera
  2. 1563年VEI 5観測記録
    1563-06-28 ~ 1563-07-26
    Caldera, NW flank (Cerro Queimado)
  3. 700年 (±150年)VEI ?地質学的推定
    700 ~ 進行中
    WNW flank (Mos)
  4. 160年 (±150年)VEI ?地質学的推定
    160 ~ 進行中
    NW flank (251 m)
  5. 紀元前 1290年VEI 4地質学的推定
    BCE 1290 ~ 進行中
    Lagoa do Fogo caldera
  6. 紀元前 1850年 (±500年)VEI 3地質学的推定
    BCE 1850 ~ 進行中
    East flank (Lagoa do Congro)
  7. 紀元前 2210年 (±150年)VEI ?地質学的推定
    BCE 2210 ~ 進行中
    East flank (East Congo maar)
  8. 紀元前 2990年VEI 5地質学的推定
    BCE 2990 ~ 進行中
    Lagoa do Fogo caldera and north flank
  9. 紀元前 4550年 (±100年)VEI ?地質学的推定
    BCE 4550 ~ 進行中
    SW flank (449 m)
  10. 紀元前 6750年 (±200年)VEI ?地質学的推定
    BCE 6750 ~ 進行中
    West flank (Pico Joao Fernandes)

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。