Boisa

sopka (bez známé erupce za posledních ~12 000 let), Papua New Guinea, Southwestern Pacific Volcanic Regions

Kde

Papua New Guinea, Southwestern Pacific Volcanic Regions

Typ (GVP)

Stratovolcano

Nadmořská výška

205 m

Poloha

-3,994°, 144,966°

The 1.4 x 1.7 km Boisa (or Aris) Island consists of a basaltic-andesitic cone with a summit crater open to the north whose rim extends to the island's east coast. The crater of the basaltic older cone is filled by two steep-sided andesitic lava domes. A third lava dome, separated from the eastern cone by a low saddle, forms a peninsula on the western side of the island. Although Gust and Johnson (1981) suggest that the last eruption "may have been quite recent" based on the visible island morphology, there is no thermal activity and no reports of activity or dated eruptions.

Text: Smithsonian Global Volcanism Program.

Údaje o sopce: Smithsonian Global Volcanism Program. Další sopky a průduchy.