Vai al contenuto principale
← Torna alla mappa
⇄ Confronta

Gaua

Stratovulcano · Vanuatu · 729 m

A plume rises from the active crater of Mount Garat in this view across Lake Letas, within the 6 x 9 km summit caldera of Gaua volcano (also known as Santa Maria). Three craters are located at the top of Mount Garat. The onset of eruptive activity from a vent high on the SE flank in 1962 ended a long period of dormancy.
A plume rises from the active crater of Mount Garat in this view across Lake Letas, within the 6 x 9 km summit caldera of Gaua volcano (also known as Santa Maria). Three craters are located at the top of Mount Garat. The onset of eruptive activity from a vent high on the SE flank in 1962 ended a long period of dormancy. · Foto: Photo by John Seach, 1999. · Wikimedia Commons
Tipo
Stratovulcano
Paese
Vanuatu
Regione
Southwestern Pacific Volcanic Regions / Vanuatu Volcanic Arc
Altitudine
729 m
Coordinate
-14.281, 167.514
Ultima eruzione
2022
Contesto tettonico
Subduction zone / Intermediate crust (15-25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

The roughly 20-km-diameter Gaua Island, also known as Santa Maria, consists of a basaltic-to-andesitic stratovolcano with an 6 x 9 km summit caldera. Small vents near the caldera rim fed Pleistocene lava flows that reached the coast on several sides of the island; littoral cones were formed where these lava flows reached the ocean. Quiet collapse that formed the roughly 700-m-deep caldera was followed by extensive ash eruptions. The active Mount Garet (or Garat) cone in the SW part of the caldera has three pit craters across the summit area. Construction of Garet and other small cinder cones has left a crescent-shaped lake. Eruptions have been frequent since the onset of activity from a vent high on the SE flank in 1962.

Sintesi da Wikipedia

Gaua è la più grande delle isole Banks, un gruppo insulare nella parte settentrionale di Vanuatu. Copre una superficie di 342 km².

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
1875~1890 · 1 eruzioni · VEI max. ?1949~1963 · 2 eruzioni · VEI max. 21963~1978 · 9 eruzioni · VEI max. 31978~1993 · 3 eruzioni · VEI max. 22007~2022 · 4 eruzioni · VEI max. 218751904194919782007

Cronologia dettagliata

  1. 2022VEI 1Osservata
    2022-05-03 – 2022-05-03
    Mt. Garet
  2. 2021VEI 1Osservata
    2021-11-16 – 2021-11-16
    Mt. Garet
  3. 2011VEI 1Osservata
    2011-09-17 – 2011-10-10
    Mt. Garat
  4. 2009VEI 2Osservata
    2009-09-27 – 2010-06-19
    Mt. Garat
  5. 1982VEI 2Osservata
    1982-04-18 – 1982-04-18
    Mt. Garat
  6. 1981VEI 1Osservata
    1981-07-09 – 1981-07-09
    Mt. Garat
  7. 1980VEI 1Osservata
    1980-07-02 – In corso
    Mt. Garat
  8. 1977VEI 2Osservata
    1977-04-13 – 1977-04-13
    Mt. Garat
  9. 1976VEI 2Osservata
    1976-01-15 – In corso
    Mt. Garat
  10. 1973VEI 2Osservata
    1973-10-09 – 1974-01-21
    Mt. Garat (upper SE flank)
  11. 1971VEI 2Osservata
    1971-05-12 – 1971-05-13
    Mt. Garat (upper SE flank)
  12. 1969VEI 2Osservata
    1969-09-22 – In corso
    Mt. Garat
  13. 1968VEI 2Osservata
    1968-07-02 – 1968-12-01
    Mt. Garat (upper SE flank)
  14. 1967VEI 2Osservata
    1967-07-16 – In corso
    Mt. Garat
  15. 1966VEI 2Osservata
    1966-07-02 – In corso
    Mt. Garat
  16. 1965VEI 3Osservata
    1965-09-27 – 1965-09-30
    Mt. Garat
  17. 1963VEI 2Osservata
    1963-09-15 – 1963-11-09
    Mt. Garat (upper SE flank)
  18. 1962VEI 2Osservata
    1962-07-16 – In corso
    Mt. Garat
  19. 1875VEI ?Osservata
    1875-06 – In corso

Link esterni

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