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Ambrym

Volcán en escudo · Vanuatu · 1334 m

The steep-walled craters of the Marum cone complex at the summit of Ambrym volcano, seen from the east. Ambrym contains a 12-km-wide caldera and is one of the most active volcanoes of the New Hebrides arc. A thick pyroclastic sequence, initially dacitic, then basaltic, overlies lava flows of a pre-caldera shield volcano. Post-caldera eruptions, primarily from Marum and Benbow cones, have partially filled the caldera floor and produced lava flows that ponded on the caldera floor or overflowed through gaps in the caldera rim.
The steep-walled craters of the Marum cone complex at the summit of Ambrym volcano, seen from the east. Ambrym contains a 12-km-wide caldera and is one of the most active volcanoes of the New Hebrides arc. A thick pyroclastic sequence, initially dacitic, then basaltic, overlies lava flows of a pre-caldera shield volcano. Post-caldera eruptions, primarily from Marum and Benbow cones, have partially filled the caldera floor and produced lava flows that ponded on the caldera floor or overflowed through gaps in the caldera rim. · Foto: Photo by Karoly Nemeth, 2005 (Massey University). · Wikimedia Commons
Tipo
Volcán en escudo
País
Vanuatu
Región
Southwestern Pacific Volcanic Regions / Vanuatu Volcanic Arc
Altitud
1334 m
Coordenadas
-16.250, 168.120
Última erupción
2024
Contexto tectónico
Subduction zone / Intermediate crust (15-25 km)
Forma volcánica
Shield
Roca principal
Basalt / Picro-Basalt
Resumen geológico

Ambrym is a large basaltic volcano with a 12-km-wide caldera formed during a major Plinian eruption with dacitic pyroclastic flows about 1,900 years ago. A thick, almost exclusively pyroclastic sequence, initially dacitic then basaltic, overlies lava flows of a pre-caldera shield volcano. Post-caldera eruptions, primarily from Marum and Benbow cones, have partially filled the caldera floor and produced lava flows that ponded on the floor or overflowed through gaps in the caldera rim. Post-caldera eruptions have also formed a series of scoria cones and maars along a fissure system oriented ENE-WSW. Eruptions have been frequently reported since 1774, though mostly limited to extra-caldera eruptions that would have affected local populations. Since 1950 observations of eruptive activity from cones within the caldera or from flank vents have occurred almost yearly.

Resumen de Wikipedia

Ambrym es una isla y volcán de Vanuatu. La región de Ambrym e islas próximas es conocida por su intensa actividad volcánica que incluye la presencia permanente de lagos de lava. Su población más grande es Eas, y sus 8.000 habitantes viven principalmente de las plantaciones de cocoteros. Ambrym, la cercana isla de Malakula y otras islas más pequeñas conforman la Provincia de Malampa.

Wikipedia · CC BY-SA · Leer artículo completo →

Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
50~247 · 1 erupciones · VEI máx. 61629~1827 · 2 erupciones · VEI máx. 21827~2024 · 57 erupciones · VEI máx. 450445103714321827

Línea de tiempo detallada

  1. 2024VEI 0Observado
    2024-01-13 – 2024-01-16
  2. 2024VEI 0Observado
    2024-10-31 – 2024-11-02
  3. 2022VEI 1Observado
    2022-01-25 – 2022-02-02
    Benbow Crater
  4. 2008VEI 2Observado
    2008-05-23 – 2018-12-17
    Benbow and Marum
  5. 2006VEI 2Observado
    2006-11-08 – 2007-12-27
    Marum (Mbwelesu)
  6. 1996VEI 1Observado
    1996-06-16 – 2005-08-16
    Benbow, Marum, Niri Mbelesu, Mbwelesu
  7. 1994VEI 1Observado
    1994-12-16 – En curso
    Benbow and Marum
  8. 1990VEI 2Observado
    1990-09-16 – 1991-07-16
    Mbwelesu, Niri Mbwelesu, Niri Taten
  9. 1989VEI 2Observado
    1989-04-24 – 1989-12-23
    Marum, Benbow, Niri Mbwelesu Taten
  10. 1988VEI 3Observado
    1988-02-12 – 1988-08-23
    Benbow, Mbwelesu, Marum, Niri Taten
  11. 1986VEI 2Observado
    1986-11-13 – 1986-11-19
    New cone 3 km east of Marum
  12. 1984VEI 2Observado
    1984-07-02 – 1986-03-08
  13. 1983VEI 2Observado
    1983-07-02 – En curso
    Marum
  14. 1981VEI 2Observado
    1981-02-20 – 1981-09-30
    Benbow, Marum
  15. 1980VEI 3Observado
    1980-05-16 – 1980-08-18
    Marum
  16. 1979VEI 2Observado
    1979-01-26 – 1979-02-18
    Benbow
  17. 1979VEI 2Observado
    1979-06-06 – 1979-09-16
    Benbow, Marum
  18. 1977VEI 2Observado
    1977-01-20 – 1977-01-28
  19. 1977VEI 2Observado
    1977-08-16 – 1977-09-30
  20. 1973VEI 3Observado
    1973-04-15 – 1976-10-14
    Benbow, Mbuelesu, Marum
  21. 1972VEI 3Observado
    1972-04-15 – 1972-08-15
    Benbow, Marum
  22. 1971VEI 2Observado
    1971-02-03 – 1971-11-05
    Marum, Benbow
  23. 1967VEI 2Observado
    1967-07-16 – 1970-08-29
    Marum, Benbow, Mbuelesu
  24. 1964VEI 2Observado
    1964-02-16 – 1966-09-16
    Marum, Benbow
  25. 1963VEI 2Observado
    1963-08-30 – 1963-09-23
    Benbow, Marum
  26. 1961VEI 3Observado
    1961-08-15 – 1963-04-03
    Benbow, Marum, south of Marum
  27. 1960VEI 1Observado
    1960-09-17 – En curso
    Mbuelesu, Benbow, near Marum
  28. 1959VEI 2Observado
    1959-04-16 – En curso
    Marum
  29. 1958VEI 2Observado
    1958-11-18 – En curso
    Benbow and Marum
  30. 1957VEI 1Observado
    1957-08-26 – 1957-10-16
    Benbow, Marum
  31. 1955VEI 2Observado
    1955-07-02 – En curso
    Benbow
  32. 1954VEI 2Observado
    1954-07-02 – En curso
    Benbow
  33. 1953VEI 2Observado
    1953-05-16 – 1953-10-13
    Benbow, Mbuelesu, S flank of Benbow
  34. 1952VEI 2Observado
    1952-08-10 – 1952-12-26
    Benbow
  35. 1950VEI 4Observado
    1950-12-06 – 1951-11-25
    Benbow
  36. 1942VEI 2Observado
    1942-06-06 – En curso
    NW flank of Benbow
  37. 1938VEI 2Observado
    1938 – En curso
    Benbow, Marum ?
  38. 1937VEI 2Observado
    1937-03-27 – 1937-04
    Benbow and west flank
  39. 1935VEI 2Observado
    1935-09 – 1936-01
    Benbow
  40. 1929VEI 2Observado
    1929-06-28 – 1929-07-01
    Benbow, west flank, Marum
  41. 1927VEI ?Observado
    1927-01-27 – 1927-01-27
  42. 1915VEI 2Observado
    1915-10-20 – En curso
    Marum, crater at SE point
  43. 1913VEI 3Observado
    1913-10-14 – 1914
    Benbow, west flank, Marum
  44. 1912VEI ?Observado
    1912 – En curso
    Marum ?, west flank ?
  45. 1910VEI 0Observado
    1910 – En curso
    Base of Marum
  46. 1909VEI 2Observado
    1909-07-28 – En curso
  47. 1908VEI 2Observado
    1908 – En curso
  48. 1898VEI 1Observado
    1898-03-26 – En curso
  49. 1894VEI 3Observado
    1894-10-15 – 1895-02-10
    Benbow and west flank
  50. 1888VEI 2Observado
    1888-02-24 – 1888-04
    SE flank (6 km from SE Point), Marum
  51. 1886VEI 2Observado
    1886-07 – En curso
  52. 1884VEI 2Observado
    1884 – En curso
    Marum and/or Benbow
  53. 1883VEI 2Observado
    1883 – En curso
    Marum
  54. 1875VEI ?Observado
    1875-05-03 – En curso
  55. 1871VEI 2Observado
    1871 – En curso
  56. 1870VEI ?Estimación geológica
    1870 – En curso
  57. 1863VEI 2Observado
    1863 – 1864
  58. 1820VEI ?Observado
    1820 – En curso
    West flank
  59. 1774VEI 2Observado
    1774-07-02 – En curso
  60. 50 (±100 años)VEI 6Estimación geológica
    50 – En curso

Enlaces externos

⚠ Solo como referencia. No apto para respuesta ante emergencias.