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Kuwae

Caldera · Vanuatu · 2 m (sottomarino)

The forested cliff marks the upper caldera wall of the largely-submarine Kuwae caldera between Epi and Tongoa islands. The 6 x 12 km caldera contains two basins that cut the NW end of Tongoa Island and the flank of the late-Pleistocene or Holocene Tavani Ruru volcano on the SE tip of Epi Island. The Karua volcano lies near the northern rim of the caldera. It has formed several ephemeral islands since it was first observed in eruption during 1897.
The forested cliff marks the upper caldera wall of the largely-submarine Kuwae caldera between Epi and Tongoa islands. The 6 x 12 km caldera contains two basins that cut the NW end of Tongoa Island and the flank of the late-Pleistocene or Holocene Tavani Ruru volcano on the SE tip of Epi Island. The Karua volcano lies near the northern rim of the caldera. It has formed several ephemeral islands since it was first observed in eruption during 1897. · Foto: Photo by Karoly Nemeth, 2005 (Massey University). · Wikimedia Commons
Tipo
Caldera
Paese
Vanuatu
Regione
Southwestern Pacific Volcanic Regions / Vanuatu Volcanic Arc
Altitudine
2 m (sottomarino)
Coordinate
-16.830, 168.523
Ultima eruzione
1974
Contesto tettonico
Subduction zone / Intermediate crust (15-25 km)
Forma vulcanica
Caldera
Roccia principale
Basalt / Picro-Basalt
Sintesi geologica

The largely submarine Kuwae caldera occupies the area between Epi and Tongoa islands. The 6 x 12 km caldera contains two basins that cut the NW end of Tongoa Island and the flank of the Tavani Ruru volcano on the SE peninsula of Epi Island. Native legends and radiocarbon dates from pyroclastic-flow deposits have been correlated with a 1452 CE ice-core peak thought to be associated with collapse of Kuwae caldera; however, others considered the deposits to be of smaller-scale eruptions and the ice-core peak to be associated with another unknown major South Pacific eruption. The submarine Karua cone in the east-central part of the caldera has formed several ephemeral islands since it was first observed in eruption during 1897.

Sintesi da Wikipedia

Riassunto in inglese

Kuwae was a landmass that existed in the vicinity of Tongoa and was destroyed by volcanic eruption in fifteenth century, probably through caldera subsidence. The exact location of the caldera is debated. A submarine caldera, now known as Kuwae caldera and which is located between the Epi and Tongoa islands, is a candidate. Kuwae caldera cuts through the flank of the Tavani Ruru volcano on Epi and the northwestern end of Tongoa. Another potential candidate is a proposed caldera between Tongoa and Tongariki.

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
1425~1481 · 1 eruzioni · VEI max. ?1869~1925 · 2 eruzioni · VEI max. 21925~1980 · 15 eruzioni · VEI max. 314251536170318141925

Cronologia dettagliata

  1. 1980VEI 0Stima geologica
    1980-08-20 – In corso
    Karua
  2. 1979VEI 0Stima geologica
    1979-09-16 – In corso
    Karua
  3. 1977VEI 0Stima geologica
    1977-02-01 – In corso
    Karua
  4. 1974VEI 0Osservata
    1974-02-04 – 1974-09-16
    Karua
  5. 1973VEI 0Stima geologica
    1973-05-05 – 1973-10-16
    Karua
  6. 1972VEI 0Stima geologica
    1972-03-05 – 1972-05-15
    Karua
  7. 1971VEI 2Osservata
    1971-02-22 – 1971-02-22
    Karua
  8. 1970VEI 0Stima geologica
    1970-09-12 – 1970-09-20
    Karua
  9. 1959VEI 2Osservata
    1959-09-18 – 1959-09-20
    Karua
  10. 1958VEI 2Osservata
    1958-10-07 – 1958-12-18
    Karua
  11. 1953VEI 1Osservata
    1953-02-12 – In corso
    Karua
  12. 1952VEI 1Osservata
    1952-10-03 – 1952-10-03
    Karua
  13. 1949VEI 3Osservata
    1949-04 – In corso
    Karua
  14. 1949VEI 3Osservata
    1949-10 – 1949-12
    Karua
  15. 1948VEI 2Osservata
    1948-09-22 – 1948-09-29
    Karua
  16. 1923VEI 2Osservata
    1923 – 1925
    Karua
  17. 1897VEI 1Osservata
    1897-05-25 – 1901
    Karua
  18. 1425 (±5 anni)VEI ?Stima geologica
    1425 – In corso

Link esterni

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