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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 6.52°S
  • 155.62°E

  • 1887 m
    6189 ft

  • 255030
  • Latitude
  • Longitude

  • Summit

  • Volcano

There are no activity reports for Loloru.

 Available Weekly Reports

There are no Weekly Reports available for Loloru.

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1050 BCE (?) Unknown Confirmed   Radiocarbon (uncorrected)
1260 BCE ± 300 years Unknown Confirmed   Radiocarbon (uncorrected)
2150 BCE (?) Unknown Confirmed   Radiocarbon (uncorrected)
3150 BCE (?) Unknown Confirmed   Radiocarbon (uncorrected)
4150 BCE (?) Unknown Confirmed   Radiocarbon (uncorrected)
6950 BCE (?) Unknown Confirmed   Radiocarbon (uncorrected)

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Blake D H, Miezitis Y, 1967. Geology of Bougainville and Buka Islands, New Guinea. Aust Bur Min Resour Geol Geophys Bull, 93: 1-56.

Cooke R J S, Johnson R W, 1978. Volcanoes and volcanology in Papua New Guinea. Geol Surv Papua New Guinea Rpt, 78/2: 1-46.

Fisher N H, 1957. Melanesia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 5: 1-105.

McKee C O, Johnson R W, Patia H, 1989. Assessment of volcanic hazards on Bougainville Island, Papua New Guinea (abs). New Mexico Bur Mines Min Resour Bull, 131: 182.

McKee C O, Johnson R W, Rogerson R, 1990. Explosive volcanism on Bougainville Island: ignimbrites, calderas, and volcanic hazards. Proc Pacific Rim Cong 1990, 2: 237-245.

Rogerson R J, Hilyard D B, Finlayson E J, Johnson R W, Mckee C O, 1989. The geology and mineral resources of Bougainville and Buka Islands, Papua New Guinea. Geol Surv Papua New Guinea Mem, no 16.

Loloru, the SE-most volcano on Bougainville Island, is the source of a broad ignimbrite apron that covers much of the southern part of the island. The summit consists of two nested calderas, and a forested andesitic lava dome that restricts a crescent-shaped lake to the eastern side of the younger caldera. The smooth flanks of the pyroclastic shield are dissected by radiating deep valleys. A pristine lava flow occurs on the SE flank. Loloru is constructed within the 10 x 15 km Pleistocene Laluai caldera. The topographically higher Taroka group of volcanoes to the NW and the Takuan group to the north also were constructed within the caldera and served to deflect the bulk of Loloru ignimbrites to the south. The most recent of several major Holocene explosive eruptions at Loloru took place about 3000 years ago.