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Iliwerung

Complex volcano · Indonesia · 583m

A lava dome, formed during the first historical eruption of Iliwerung volcano in 1870, occupies the summit crater of the volcano, seen here in 1979 from the rim of Ado Wajung crater. Iliwerung forms one of the south-facing peninsulas on Lembata (formerly Lomblen) Island, and has a series of lava domes and craters along N-S and NW-SE lines. Many of these vents, including submarine vents offshore, have erupted in historical time.
A lava dome, formed during the first historical eruption of Iliwerung volcano in 1870, occupies the summit crater of the volcano, seen here in 1979 from the rim of Ado Wajung crater. Iliwerung forms one of the south-facing peninsulas on Lembata (formerly Lomblen) Island, and has a series of lava domes and craters along N-S and NW-SE lines. Many of these vents, including submarine vents offshore, have erupted in historical time. · Photo: Photo by Volcanological Survey of Indonesia. · Wikimedia Commons
Type
Complex volcano
Country
Indonesia
Region
Sunda-Banda Volcanic Regions / Sunda Volcanic Arc
Elevation
583m
Coordinates
-8.532, 123.573
Last eruption
2021
Tectonic setting
Subduction zone / Crustal thickness unknown
Landform
Composite
Major rock type
Basalt / Picro-Basalt
Geological summary

Constructed on the southern rim of the Lerek caldera, Iliwerung forms a prominent south-facing peninsula on Lembata (formerly Lomblen) Island. Craters and lava domes have formed along N-S and NW-SE lines on the complex volcano; activity has been observed at vents from the summit to the submarine SE flank. The summit lava dome was formed during an eruption in 1870. In 1948 the Iligripe lava dome grew on the E flank at 120 m elevation. Beginning in 1973-74, when three ephemeral islands were formed, submarine eruptions began on the lower ESE flank at a vent named Hobal; several other eruptions have since taken place at this vent.

From Wikipedia

Iliwerung or Illiwerung is a complex volcano forming a prominent south-facing peninsula on Lembata Island in southern Indonesia. It contains north-south and northwest-southeast trending lines of craters and lava domes, with the summit dome having formed by a VEI-3 eruption in 1870.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
1870~1885 · 1 eruptions · max VEI 31900~1915 · 1 eruptions · max VEI 21915~1930 · 1 eruptions · max VEI 21930~1946 · 1 eruptions · max VEI ?1946~1961 · 5 eruptions · max VEI 21961~1976 · 1 eruptions · max VEI 21976~1991 · 2 eruptions · max VEI 11991~2006 · 2 eruptions · max VEI 22006~2021 · 2 eruptions · max VEI 018701900194619762006

Detailed timeline

  1. 2021VEI 0Observed
    2021-11-28 – 2021-11-29
  2. 2013VEI 0Observed
    2013-08-20 – 2013-08-20
    Hobal (submarine vent on SE flank)
  3. 1999VEI 0Observed
    1999-05-22 – 1999-09-16
    Hobal (submarine vent on SE flank)
  4. 1993VEI 2Observed
    1993-09-15 – 1993-09-19
    Hobal (submarine vent on SE flank)
  5. 1983VEI 1Observed
    1983-08-17 – 1983-08-18
    Hobal (submarine vent on SE flank)
  6. 1976VEI 0Geological estimate
    1976-03-08 – Ongoing
    Hobal (submarine vent on SE flank)
  7. 1973VEI 2Observed
    1973-12-05 – 1974-08-22
    Hobal (submarine vent on SE flank)
  8. 1952VEI 1Observed
    1952-03-24 – Ongoing
  9. 1951VEI 2Observed
    1951-11-12 – 1951-11-16
  10. 1950VEI 2Observed
    1950-09-10 – 1950-10-02
  11. 1949VEI 2Observed
    1949-04-09 – 1949-04-29
  12. 1948VEI 2Observed
    1948-04-07 – 1948-11-26
    East flank (Iligripe)
  13. 1941VEI ?Geological estimate
    1941-06-05 – Ongoing
  14. 1928VEI 2Observed
    1928 – Ongoing
    Iliwerung
  15. 1910VEI 2Observed
    1910 – Ongoing
    Iliwerung
  16. 1870VEI 3Observed
    1870 – Ongoing
    Iliwerung (Iliadowajo)

External links

⚠ For reference only. Not for emergency response.