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Fotos al azar
News
Map of recent earthquakes at Mt Churchill volcano in eastern Alaska
Friday, Jul 19, 2013
Un enjambre sísmico con magnitudes hasta 3.5 ha estado ocurriendo en el arco de Wrangell cerca de 40 kilómetros de volcán NE de Monte Churchill durante los últimos días. La intensidad y frecuencia de los terremotos ha calmado abajo ayer. ... [Leer más]
 

Churchill volcano

Stratovolcano 5005 m / 16,420 ft
United States, Eastern Alaska, 61.38°N / -141.75°W
Current status: normal or dormant (1 out of 5) | Reports
Churchill volcano books
Last update: 19 Jul 2013 (seismic swarm in mid July)
Typical eruption style: sin especificar
Erupciones del volcán Churchill: 800 AD ± 100 years
Fecha / HoraRevista / ProfundidadDistanciaUbicación
Sun, 13 Oct 2019
Sun, 13 Oct 07:23 UTCM 1.126 km152km E of Chitina, Alaska (USA)
Thu, 10 Oct 2019
Thu, 10 Oct 09:53 UTCM 1.5 / 13.8 km9 km146km E of Chitina, Alaska (USA)
Tue, 8 Oct 2019
Tue, 8 Oct 10:35 UTCM 1.2 / 6.6 km14 km146km E of Chitina, Alaska (USA)
Fri, 27 Sep 2019
Fri, 27 Sep 21:00 UTCM 1.1 / 7.4 km22 km152km NNE of Cape Yakataga, Alaska (USA)
Thu, 12 Sep 2019
Thu, 12 Sep 11:37 UTCM 1.2 / 18.4 km15 kmSouthern Alaska (USA)
Ver los sismos recientes

Background:

The Bona-Churchill massif in the St. Elias Mountains forms the highest Quaternary volcano in the United States. A 2.7 x 4.2 km wide caldera caps the summit of 4766-m-high Mount Churchill, which is now known to be the source of the White River Ash, produced during two of the largest explosive eruptions in North America during the past 2000 years (McGimsey et al. 1992). The 5005-m-high summit of Mount Bona lies 4 km across a high saddle from the younger Mount Churchill. The source vent of the widespread bilobate White River Ash deposit, which blankets more than 340,000 sq km of eastern Alaska and NW Canada, was initially thought to be a pumice mound that is mostly buried beneath the Klutlan Glacier NE of Churchill volcano. More recent work has revealed thick young pumice deposits mineralogically and chemically similar to the White River Ash deposits along the rim of the Mount Churchill caldera.
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Smithsonian / GVP volcano information


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