Billy Mitchell (volcano)
|Billy Mitchell volcano|
The dark-colored caldera lake of Billy Mitchell is at right, above an ash plume originating from Bagana.
|Elevation||1,544 m (5,066 ft)|
|Location||Bougainville, Papua New Guinea|
|Parent range||Emperor Range|
|Mountain type||Pyroclastic shield|
|Volcanic arc/belt||Bougainville & Solomon Is.|
|Last eruption||1580 ± 20 years|
|Basin countries||Papua New Guinea|
|Surface area||~3 square kilometres (1.2 sq mi)|
|Max. depth||~90 metres (300 ft)|
Billy Mitchell is a volcano in the central part of the island of Bougainville, just northeast of the Bagana Volcano in Papua New Guinea. It is a small pyroclastic shield truncated by a 2 km wide caldera filled by a crater lake.
The last two major eruptions were in 1580 AD ± 20 years and about 1030 AD. They were among the largest Holocene eruptions in Papua New Guinea. Both were explosive eruptions with a Volcanic Explosivity Index of at least 5. The 1580 AD ± 20 years eruption produced pyroclastic flows and probably formed its caldera. The ignimbrite deposit from that eruption, which had a VEI of 6, extends 22 kilometres (14 mi) from the caldera to the coast, and its volume is around 10 cubic kilometres (2.4 cu mi).
- List of volcanoes in Papua New Guinea
- Mount Billy Mitchell (Chugach Mountains)
- Timetable of major worldwide volcanic eruptions
- Photo of the Billy Mitchell Crater Lake
- "Billy Mitchell". Global Volcanism Program. Smithsonian Institution. Retrieved 2011-11-08.
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