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Iliboleng volcano

stratovolcano 1659 m / 5,443 ft
Lesser Sunda Islands, Indonesia, -8.34°S / 123.26°E
Current status: dormant (1 out of 5)
Iliboleng volcano books
Typical eruption style: Explosive
Iliboleng volcano eruptions: 1991, 1987, 1986, 1983-84, 1982, 1973-74, 1951, 1950, 1949, 1948, 1944, 1927, 1925, 1909, 1904, 1888, 1885No recent earthquakes
TimeMag. / DepthDistanceLocation
Frequently active Iliboleng volcano (or Ili Boleng) is located in the SE corner of Adonara Island, across a narrow strait from Lomblen Island and 25 km east of Flores. Iliboleng has 5 partly overlapping summit craters and an irregular profile caused by lava flows.
A cone low on the SE flank, Balile, has also erupted lava flows. Historical eruptions were first recorded in 1885. Frequent eruptions since then consisted of moderate explosive activity. Lava flows were only observed in the eruption of 1888.

1991 eruptions
Ash eruptions occurred on 3 and 15 November 1991, ejecting columns to a maximum of ~150 m above the crater rim.

1987 eruption
A large explosion on 2 October at 22h52 local time, causing light ash fall in about a 15 km2 area around the volcano.

1986 eruption
On 28 May 1986, a single explosion ejected incandescent material and caused grass fires and ashfall on lantations and on Lamalota, Dua Muda, Tuawolo, and Kiwangona villages. 570 villagers were evacuated.
Ash eruptions were reported on 18 July and 10, 15, and 24 November. The ash plume on 24 November reached 1,000 m height and was blown NNW, covering 18.7 km2 with ca. 1 mm of ash. There were no casualties.
Source: GVP monthly reports

1984 eruptions
Ash eruptions were reported from Iliboleng volcano on 3 January and 13 April 1984, producing dark ash plumes reaching 1 km height.

1983 eruption
Ash eruptions were reported on 11 May, 22 September, and 24 November 1983. Black ash plumes rose 500 m above the crater.

1982 eruption
An ash eruption occurred on 17 November and produced an ash plume plume 1 km high. Ash fell on nearby villages.

1948 eruption
Iliboleng volcano erupted on 27 April 1948, ejecting an estimated of 500 m3 of volcanic material.

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