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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. A caldera lake on the SE side drains through a narrow gap in the northern caldera wall. The latest caldera-forming eruption of Hargy volcano took place about 11,000 years ago. The dacitic Galloseulo lava cone rises above and partially overtops the western rim of the caldera. A double crater occupies a larger 700-m-wide crater. Numerous small eruptions have taken place at Galloseulo over the past 7000 years, the last occurring about 1000 years ago.

Eruption history

2 recordedGlossary
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

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