Vai al contenuto principale
← Torna alla mappa
⇄ Confronta

Água de Pau

Agua de Pau

Stratovulcano · Portugal · 947 m

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). · Foto: Photo by Rick Wunderman, 1977 (Smithsonian Institution). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Portugal
Regione
Atlantic Ocean Volcanic Regions / Azores-Terceira Rift Volcanic Province
Altitudine
947 m
Coordinate
37.770, -25.470
Ultima eruzione
1564
Contesto tettonico
Rift zone / Oceanic crust (< 15 km)
Forma vulcanica
Composite
Roccia principale
Trachyte / Trachydacite
Sintesi geologica

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.

Sintesi da Wikipedia

Riassunto in inglese

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.

Wikipedia · CC BY-SA · Leggi l'articolo completo →

Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
6750 BCE~6473 BCE · 1 eruzioni · VEI max. ?4810 BCE~4533 BCE · 1 eruzioni · VEI max. ?3147 BCE~2870 BCE · 1 eruzioni · VEI max. 52316 BCE~2039 BCE · 1 eruzioni · VEI max. ?2039 BCE~1762 BCE · 1 eruzioni · VEI max. 31484 BCE~1207 BCE · 1 eruzioni · VEI max. 499 BCE~178 · 1 eruzioni · VEI max. ?455~733 · 1 eruzioni · VEI max. ?1287~1564 · 2 eruzioni · VEI max. 56750 BCE4810 BCE2593 BCE653 BCE1287

Cronologia dettagliata

  1. 1564VEI 2Osservata
    1564-02-10 – 1564-02-12
    Lagoa do Fogo caldera
  2. 1563VEI 5Osservata
    1563-06-28 – 1563-07-26
    Caldera, NW flank (Cerro Queimado)
  3. 700 (±150 anni)VEI ?Stima geologica
    700 – In corso
    WNW flank (Mos)
  4. 160 (±150 anni)VEI ?Stima geologica
    160 – In corso
    NW flank (251 m)
  5. 1290 a.C.VEI 4Stima geologica
    BCE 1290 – In corso
    Lagoa do Fogo caldera
  6. 1850 a.C. (±500 anni)VEI 3Stima geologica
    BCE 1850 – In corso
    East flank (Lagoa do Congro)
  7. 2210 a.C. (±150 anni)VEI ?Stima geologica
    BCE 2210 – In corso
    East flank (East Congo maar)
  8. 2990 a.C.VEI 5Stima geologica
    BCE 2990 – In corso
    Lagoa do Fogo caldera and north flank
  9. 4550 a.C. (±100 anni)VEI ?Stima geologica
    BCE 4550 – In corso
    SW flank (449 m)
  10. 6750 a.C. (±200 anni)VEI ?Stima geologica
    BCE 6750 – In corso
    West flank (Pico Joao Fernandes)

Link esterni

⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.