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Ol Doinyo Lengai

Lengai, Ol Doinyo

Estratovolcán · Tanzania · 2962 m

A herd of wildebeest graze in the foreground during an explosive eruption from Tanzania's Ol Doinyo Lengai in 1966. Explosive activity began in August 1966, near the end of an eruption that began in 1960 and consisted of quiet emission of lava flows in the summit crater. Ash deposits from previous eruptions whiten the volcano's slopes. This is the only volcano known to have erupted carbonatite in historical time.
A herd of wildebeest graze in the foreground during an explosive eruption from Tanzania's Ol Doinyo Lengai in 1966. Explosive activity began in August 1966, near the end of an eruption that began in 1960 and consisted of quiet emission of lava flows in the summit crater. Ash deposits from previous eruptions whiten the volcano's slopes. This is the only volcano known to have erupted carbonatite in historical time. · Foto: Photo by Gordon Davies, 1966 (courtesy of Celia Nyamweru, Kenyatta University). · Wikimedia Commons
Tipo
Estratovolcán
País
Tanzania
Región
Eastern Africa Volcanic Regions / Kenyan Rift Volcanic Province
Altitud
2962 m
Coordenadas
-2.764, 35.914
Última erupción
2026
Contexto tectónico
Rift zone / Continental crust (> 25 km)
Forma volcánica
Composite
Roca principal
Foidite
Resumen geológico

The symmetrical Ol Doinyo Lengai is the only volcano known to have erupted carbonatite tephras and lavas in historical time. The prominent stratovolcano, known to the Maasai as "The Mountain of God," rises abruptly above the broad plain south of Lake Natron in the Gregory Rift Valley. The cone-building stage ended about 15,000 years ago and was followed by periodic ejection of natrocarbonatitic and nephelinite tephra during the Holocene. Historical eruptions have consisted of smaller tephra ejections and emission of numerous natrocarbonatitic lava flows on the floor of the summit crater and occasionally down the upper flanks. The depth and morphology of the northern crater have changed dramatically during the course of historical eruptions, ranging from steep crater walls about 200 m deep in the mid-20th century to shallow platforms mostly filling the crater. Long-term lava effusion in the summit crater beginning in 1983 had by the turn of the century mostly filled the northern crater; by late 1998 lava had begun overflowing the crater rim.

Resumen de Wikipedia

Ol Doinyo Lengai es un volcán situado al sur del lago Natron, en el extremo sur del brazo oriental del Gran Valle del Rift, en el noroeste de Tanzania. La etapa de formación del cono de este volcán simétrico de 370.000 años de antigüedad finalizó hace unos 15.000 años. Su cima la forman dos cráteres. El del sur, inactivo, está cubierto de vegetación y de ceniza volcánica. En el del norte, la actividad se centra en torno a varios hornitos y pequeños conos.

Wikipedia · CC BY-SA · Leer artículo completo →

Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
1550 BCE~1352 BCE · 1 erupciones · VEI máx. ?163 BCE~35 · 1 erupciones · VEI máx. ?630~828 · 1 erupciones · VEI máx. ?1224~1423 · 1 erupciones · VEI máx. ?1819~2017 · 23 erupciones · VEI máx. 31550 BCE757 BCE23410261819

Línea de tiempo detallada

  1. 2017VEI 0Observado
    2017-04-09 – 2026-03-31
    North Crater
  2. 2016VEI 0Observado
    2016-09-21 – 2016-10-13
    North Crater
  3. 2015VEI 0Observado
    2015-06-20 – 2015-08-24
    North Crater
  4. 2011VEI 0Observado
    2011-06-22 – 2014-07-15
    North Crater
  5. 2007VEI 3Observado
    2007-06-16 – 2010-10-09
    North Crater
  6. 1994VEI 1Observado
    1994-09-18 – 2006-07-16
    North Crater
  7. 1983VEI 2Observado
    1983-01-01 – 1993-09-24
    North Crater
  8. 1969VEI ?Estimación geológica
    1969-07-16 – En curso
  9. 1967VEI 3Observado
    1967-07-08 – 1967-09-04
    North Crater
  10. 1960VEI 3Observado
    1960-03-16 – 1966-11-28
    North Crater
  11. 1958VEI 1Observado
    1958-02-06 – En curso
    North Crater
  12. 1955VEI 2Observado
    1955-01-19 – 1955-01-20
    North Crater
  13. 1954VEI 2Observado
    1954-07-26 – 1954-09-16
    North Crater
  14. 1940VEI 3Observado
    1940-07-24 – 1941-02
    North Crater
  15. 1926VEI 2Observado
    1926 – En curso
    North Crater
  16. 1921VEI 2Observado
    1921-02 – En curso
    North Crater
  17. 1916VEI 3Observado
    1916-12-01 – 1917-06
    North Crater
  18. 1914VEI 0Observado
    1914-08-15 – 1915
    North Crater
  19. 1913VEI 0Observado
    1913 – En curso
  20. 1907 (±3 años)VEI 0Observado
    1907 – 1910-08-04
    North Crater
  21. 1904VEI 0Observado
    1904 – En curso
    North Crater
  22. 1882VEI 2Observado
    1882 – 1883
    North Crater
  23. 1880VEI 2Observado
    1880-12 – En curso
    North Crater
  24. 1350VEI ?Estimación geológica
    1350 – En curso
  25. 700VEI ?Estimación geológica
    700 – En curso
  26. 50 a. C.VEI ?Estimación geológica
    BCE 50 – En curso
  27. 1550 a. C. (±1500 años)VEI ?Estimación geológica
    BCE 1550 – En curso

Enlaces externos

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