Saltar al contenido principal
← Volver al mapa
⇄ Comparar

Makushin Volcano

Makushin

Estratovolcán · United States · 1800 m

Makushin is a glaciated volcano on northern Unalaska Island. This 2 March 1987 view from the NE shows a small plume originating from a vent on the left side of the broad summit and drifting about 3 km WNW. The summit contains a 2-km-wide caldera. Minor explosive eruptions have occurred during historical time.
Makushin is a glaciated volcano on northern Unalaska Island. This 2 March 1987 view from the NE shows a small plume originating from a vent on the left side of the broad summit and drifting about 3 km WNW. The summit contains a 2-km-wide caldera. Minor explosive eruptions have occurred during historical time. · Foto: Photo by Harold Wilson (Peninsula Airways), 1987 (courtesy of John Reeder, Alaska Div. Geology Geophysical Surveys). · Wikimedia Commons
Tipo
Estratovolcán
País
United States
Región
North America Volcanic Regions / Aleutian Ridge Volcanic Arc
Altitud
1800 m
Coordenadas
53.891, -166.923
Última erupción
1995
Contexto tectónico
Subduction zone / Intermediate crust (15-25 km)
Forma volcánica
Composite
Roca principal
Andesite / Basaltic Andesite
Resumen geológico

The ice-covered Makushin volcano on northern Unalaska Island is capped by a 2.5 km caldera. Its broad, dome-like structure contrasts with the steep-sided profiles of most other Aleutian stratovolcanoes. Much of the edifice was formed during the Pleistocene, but the caldera (which formed about 8,000 years ago), Sugarloaf cone on the ENE flank, and a cluster of about a dozen explosion pits and cinder cones at Point Kadin on the WNW flank, are of Holocene age. A broad band of NE-SW-trending vents cuts across the volcano. The composite Pakushin cone, with multiple summit craters, lies 8 km SW. Table Top (Pleistocene, 68 +/- 14 ka) and Wide Bay (Holocene) cinder cones are about 20 km ENE on the peninsula across the bay from the City of Unalaska. Frequent explosive eruptions have occurred during the past 4,000 years, sometimes accompanied by pyroclastic flows and surges. Geothermal areas are found in the summit caldera and on the SE and E flanks. Small-to-moderate explosive eruptions have been recorded since 1786.

Resumen de Wikipedia

Resumen en inglés

The Makushin Volcano is an ice-covered stratovolcano located on Unalaska Island in the Aleutian Islands of the U.S. state of Alaska. With an elevation of 2,036 meters (6,680 ft), its summit is the highest point on the island. Makushin is one of the most active among the 52 historically active volcanoes of Alaska. It has erupted at least two dozen times over the past several thousand years, with the last eruption occurring in 1995.

Wikipedia · CC BY-SA · Leer artículo completo →

Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
6650 BCE~6362 BCE · 1 erupciones · VEI máx. ?6362 BCE~6074 BCE · 1 erupciones · VEI máx. 53768 BCE~3480 BCE · 1 erupciones · VEI máx. 41751 BCE~1463 BCE · 1 erupciones · VEI máx. ?598 BCE~310 BCE · 1 erupciones · VEI máx. ?1131~1419 · 1 erupciones · VEI máx. ?1707~1995 · 21 erupciones · VEI máx. 36650 BCE4633 BCE2327 BCE310 BCE1707

Línea de tiempo detallada

  1. 1995VEI 1Observado
    1995-01-30 – 1995-01-30
  2. 1993VEI 1Observado
    1993-08-16 – 1994-01-19
  3. 1987VEI 1Observado
    1987-03-02 – 1987-03-02
  4. 1980VEI 1Observado
    1980-05-01 – 1980-07-04
    SE side of summit
  5. 1952VEI ?Estimación geológica
    1952-07-02 – En curso
  6. 1951VEI 1Observado
    1951-12-20 – En curso
  7. 1938VEI 2Observado
    1938-10 – En curso
  8. 1926VEI 2Observado
    1926-12-30 – En curso
  9. 1912VEI ?Estimación geológica
    1912 – En curso
  10. 1907VEI ?Observado
    1907 – En curso
  11. 1883VEI 2Observado
    1883 – En curso
  12. 1867VEI ?Estimación geológica
    1867 – En curso
  13. 1865VEI ?Observado
    1865 – En curso
  14. 1844 (±1 años)VEI ?Estimación geológica
    1844 – En curso
  15. 1827VEI 2Estimación geológica
    1827 – 1838
  16. 1826VEI 3Observado
    1826-06 – En curso
  17. 1818VEI ?Estimación geológica
    1818 – En curso
  18. 1802VEI 3Observado
    1802 – En curso
  19. 1792VEI ?Estimación geológica
    1792-02-14 – En curso
  20. 1790VEI ?Estimación geológica
    1790-06-07 – En curso
  21. 1768VEI 3Observado
    1768 – 1769
  22. 1150 (±500 años)VEI ?Estimación geológica
    1150 – En curso
  23. 550 a. C. (±900 años)VEI ?Estimación geológica
    BCE 550 – En curso
  24. 1750 a. C.VEI ?Estimación geológica
    BCE 1750 – En curso
  25. 3650 a. C. (±1850 años)VEI 4Estimación geológica
    BCE 3650 – En curso
  26. 6100 a. C. (±50 años)VEI 5Estimación geológica
    BCE 6100 – En curso
  27. 6650 a. C. (±200 años)VEI ?Estimación geológica
    BCE 6650 – En curso

Enlaces externos

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