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Papua New Guinea · Stratovolcano

Hargy

Type
Stratovolcano
Elevation
1148m
Last eruption
950
Lake Hargy (lower right) lies in the SE corner of the 10 x 12 km wide Hargy caldera. The Lobu River drains the lake through a notch in the northern caldera rim. The post-caldera cone of Galloseulo lies beneath the large cloud bank in the center of the image, about halfway from the lake to the Bismarck Sea. The Toiru River cuts across the bottom of the image. Small eruptions have taken place at Galloseulo over the past 7,000 years, the last occurring about 1,000 years ago.
Lake Hargy (lower right) lies in the SE corner of the 10 x 12 km wide Hargy caldera. The Lobu River drains the lake through a notch in the northern caldera rim. The post-caldera cone of Galloseulo lies beneath the large cloud bank in the center of the image, about halfway from the lake to the Bismarck Sea. The Toiru River cuts across the bottom of the image. Small eruptions have taken place at Galloseulo over the past 7,000 years, the last occurring about 1,000 years ago. · Photo: NASA Landsat image, 2000 (courtesy of Hawaii Synergy Project, Univ. of Hawaii Institute of Geophysics & Planetology).
Type
Stratovolcano
Country
Papua New Guinea
Region
Southwestern Pacific / Bismarck Volcanic Arc
Elevation
1148m
Coordinates
-5.330, 151.100
Last eruption
950
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Dacite

Geological summary

This little-known volcano is one of several major calderas on the island of New Britain. The 10 x 12 km Hargy caldera, whose floor is 150 m above sea level, contains an inner caldera with a steep west-facing wall.

Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →

From Wikipedia

Hargy is a large volcanic caldera on the island of New Britain, Papua New Guinea. The caldera measures 12 km (7.5 mi) by 10 km (6.2 mi), and its floor is located at 150 m (490 ft) above sea level. It also hosts an inner-caldera with a steep west-facing wall. Lake Hargy, located within the caldera, drains through a narrow river that runs along the northern wall. The caldera-forming eruption occurred approximately 11,000 years ago. At the western part of the caldera rises Galloseulo, a post-caldera dacitic lava cone with a 700 m (2,300 ft)-wide crater, occupied by a pair of smaller craters. Galloseulo has produced many small eruptions in the past 7,000 years, with the most recent in 950 CE. In September 1990, minor fumarolic activity was observed in the western summit crater of Galloseulo.

Wikipedia · CC BY-SA · Read full article →

Eruption history

2 recordedGlossary

Record summary

Confirmed eruptions
2
Uncertain eruptions
0
Span of confirmed record
5050 BCE – 950
Largest confirmed eruption
No VEI recorded
Confirmed eruptions since 1900
0
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
5050 BCE~4850 BCE · 1 eruptions · max VEI ?750~950 · 1 eruptions · max VEI ?5050 BCE3650 BCE2050 BCE650 BCE750

Detailed timeline

  1. 950VEI ?Geological estimate
    950 – end unknown
    Galloseulo
  2. 5050 BCEVEI ?Geological estimate
    5050 BCE – end unknown
    Galloseulo

Nearby volcanoes

External links

⚠ For reference only. Not for emergency response.