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Zufallsfotos
News
Map of recent earthquakes at Mt Churchill volcano in eastern Alaska
Friday, Jul 19, 2013
A seismic swarm with magnitudes up to 3.5 has been occurring in the Wrangell Arc about 40 km NE of Mt. Churchill volcano during the past few days. The intensity and frequency of the quakes has calmed down yesterday. ... [mehr]
 

Churchill Vulkan

Stratovolcano 5005 m / 16,420 ft
United States, Eastern Alaska, 61.38°N / -141.75°W
Aktueller Status: normal / ruhend (1 von 5) | Berichte
Churchill Vulkan-B cher
Last update: 19 Jul 2013 (seismic swarm in mid July)
Typische Aktivität: unspecified
Ausbrüche des Churchill: 800 AD ± 100 years
UhrzeitMag. / TiefeDistanceOrt
Mon, 19 Aug 2019
Mon, 19 Aug 10:13 UTCM 1.616 km146km E of Chitina, Alaska (USA)
Mon, 19 Aug 06:35 UTCM 1.2 / 22.1 km17 km153km E of Chitina, Alaska (USA)
Wed, 14 Aug 2019
Wed, 14 Aug 22:22 UTCM 0.6 / 3.3 km15 km153km E of Chitina, Alaska (USA)
Tue, 13 Aug 2019
Tue, 13 Aug 09:11 UTCM 1.0 / 11.4 km20 km151km E of Chitina, Alaska (USA)
Fri, 9 Aug 2019
Fri, 9 Aug 03:38 UTCM 1.629 km160km E of Chitina, Alaska (USA)
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Beschreibung:

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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