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Monte Rainier

Rainier

Estratovolcán · United States · 4392 m

Mount Rainier is located east of the Puget Sound region, seen here from High Knob to the SW in 1981. Large Holocene mudflows from this heavily glaciated volcano have reached as far as the Puget Sound lowlands. Several postglacial tephras have erupted from Rainier, with tree-ring dating placing the last recognizable tephra deposit during the 19th century. Extensive hydrothermal alteration of the upper portion of the volcano has contributed to its structural weakness.
Mount Rainier is located east of the Puget Sound region, seen here from High Knob to the SW in 1981. Large Holocene mudflows from this heavily glaciated volcano have reached as far as the Puget Sound lowlands. Several postglacial tephras have erupted from Rainier, with tree-ring dating placing the last recognizable tephra deposit during the 19th century. Extensive hydrothermal alteration of the upper portion of the volcano has contributed to its structural weakness. · Foto: Photo by Lee Siebert, 1981 (Smithsonian Institution). · Wikimedia Commons
Tipo
Estratovolcán
País
United States
Región
América del Norte / High Cascades Volcanic Arc
Altitud
4392 m
Coordenadas
46.853, -121.760
Última erupción
1450
Contexto tectónico
Subduction zone / Continental crust (> 25 km)
Forma volcánica
Composite
Roca principal
Andesite / Basaltic Andesite
Resumen geológico

Mount Rainier is a heavily glaciated andesitic volcano in the Puget Sound region. Large Holocene mudflows from collapse have reached as far as the Puget Sound lowlands. The present summit was constructed within a large crater breached to the NE, formed by collapse during a major explosive eruption about 5,600 years ago that deposited the widespread Osceola Mudflow. Rainier has produced eruptions throughout the Holocene, including about a dozen during the past 2,600 years; the largest of these occurred about 2,200 years ago. The present summit cone is capped by two overlapping craters. Extensive hydrothermal alteration of the upper portion of the volcano has contributed to its structural weakness; an active thermal system has caused periodic melting on flank glaciers and produced an elaborate system of steam caves in the summit icecap. Reported uncertain 19th-century eruptions, including a possible but not confirmed phreatic eruption in 1894, have not left identifiable deposits.

Resumen de Wikipedia

Resumen en inglés

Mount Rainier, also known as Tahoma, is a large, active stratovolcano in the Cascade Range of the Pacific Northwest in the United States. The mountain is located in Mount Rainier National Park about 59 miles (95 km) south-southeast of Seattle. At 14,406 ft (4,391 m) it is the highest mountain in the U.S. state of Washington, the most topographically prominent mountain in the contiguous United States, and the tallest in the Cascade Volcanic Arc.

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Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
8050 BCE~7719 BCE · 2 erupciones · VEI máx. 35730 BCE~5398 BCE · 1 erupciones · VEI máx. 25398 BCE~5067 BCE · 1 erupciones · VEI máx. 35067 BCE~4735 BCE · 2 erupciones · VEI máx. 34072 BCE~3741 BCE · 1 erupciones · VEI máx. ?3741 BCE~3409 BCE · 1 erupciones · VEI máx. 33078 BCE~2747 BCE · 1 erupciones · VEI máx. 22747 BCE~2415 BCE · 1 erupciones · VEI máx. 3758 BCE~426 BCE · 4 erupciones · VEI máx. ?426 BCE~95 BCE · 3 erupciones · VEI máx. 4237~568 · 1 erupciones · VEI máx. ?900~1231 · 1 erupciones · VEI máx. ?1231~1563 · 1 erupciones · VEI máx. ?1563~1894 · 7 erupciones · VEI máx. 28050 BCE5730 BCE3078 BCE758 BCE1563

Línea de tiempo detallada

  1. 1894VEI 1Observado
    1894-11-21 – 1894-12-24
  2. 1882VEI 2Estimación geológica
    1882-07-02 – En curso
  3. 1879VEI 2Estimación geológica
    1879-07-02 – En curso
  4. 1870VEI 2Estimación geológica
    1870-07-02 – En curso
  5. 1858VEI 2Estimación geológica
    1858-07-02 – En curso
  6. 1854VEI 2Estimación geológica
    1854-07-02 – En curso
  7. 1843VEI 2Estimación geológica
    1843-07-02 – En curso
  8. 1450 (±100 años)VEI ?Estimación geológica
    1450 – En curso
  9. 910 (±500 años)VEI ?Estimación geológica
    910 – En curso
  10. 440 (±100 años)VEI ?Estimación geológica
    440 – En curso
  11. 150 a. C.VEI ?Estimación geológica
    BCE 150 – En curso
  12. 250 a. C. (±200 años)VEI 4Estimación geológica
    BCE 250 – En curso
  13. 400 a. C. (±50 años)VEI ?Estimación geológica
    BCE 400 – En curso
  14. 500 a. C. (±50 años)VEI ?Estimación geológica
    BCE 500 – En curso
  15. 610 a. C. (±100 años)VEI ?Estimación geológica
    BCE 610 – En curso
  16. 650 a. C. (±50 años)VEI ?Estimación geológica
    BCE 650 – En curso
  17. 700 a. C. (±50 años)VEI ?Estimación geológica
    BCE 700 – En curso
  18. 2550 a. C.VEI 3Estimación geológica
    BCE 2550 – En curso
  19. 2750 a. C.VEI 2Estimación geológica
    BCE 2750 – En curso
  20. 3650 a. C.VEI 3Estimación geológica
    BCE 3650 – En curso
  21. 3850 a. C. (±200 años)VEI ?Estimación geológica
    BCE 3850 – En curso
  22. 4850 a. C.VEI 2Estimación geológica
    BCE 4850 – En curso
  23. 5050 a. C.VEI 3Estimación geológica
    BCE 5050 – En curso
  24. 5350 a. C.VEI 3Estimación geológica
    BCE 5350 – En curso
  25. 5550 a. C.VEI 2Estimación geológica
    BCE 5550 – En curso
  26. 7800 a. C. (±300 años)VEI ?Estimación geológica
    BCE 7800 – En curso
  27. 8050 a. C.VEI 3Estimación geológica
    BCE 8050 – En curso

Enlaces externos

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