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Tavui volcano

caldera 200? m / 656 feet
New Britain Island, Papua New Guinea, -4.12°S / 152.2°E
Current status: normal or dormant (1 out of 5) | Reports
Tavui volcano books
Typical eruption style: explosive
Tavui volcano eruptions: 5150 BC ± 1000 years
TimeMag. / DepthDistanceLocation
Tue, 30 Oct
Tue, 30 Oct 12:52 UTCM 4.8 / 212 km27 kmNew Britain Region, P.N.G.
Tavui is a large, mostly submerged caldera offshore from east New Britain, Papua New Guinea. It has impressive 1000 m cliffs at a location called Submarime Base, a popular diving spot in New Britain.
The volcano was last active about 7000 years ago and might still be considered active.

Background:

From Smithsonian / GVP volcano information:
The spectacular mostly submarine Tavui caldera lies off the NE tip of the Gazelle Peninsula north of Rabaul caldera. The caldera was first discovered during a bathymetric cruise in 1985. The SW wall of the roughly 10 x 12 km wide Tavui caldera cuts the NE tip of the peninsula and extends from Tavui Point at the northern tip of the peninsula SE to Laweo Point.
The 7100-year-old Raluan Ignimbrite, initially thought to have originated from Rabaul caldera, is now thought to have been produced by an eruption of Tavui caldera. A basaltic scoria layer immediately underlies the rhyolitic ignimbrite, and the introduction of basaltic magma was considered to have triggered the rhyolitic eruption. The lack of a major low-velocity region detectable beneath the caldera during a seismic tomography survey suggests that it is not currently active.


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