Iliwerung
Complex in Indonesia
Key Facts
Elevation
583 m (1,913 ft)
Type
Complex
Location
-8.532°, 123.573°
Region
Sunda Volcanic Arc
Total Eruptions
14
Max VEI
VEI 3
Rock Type
Basalt / Picro-Basalt
Tectonic Setting
Subduction zone
Location
Loading map...
Eruption Timeline
Most recent confirmed eruption
Historical eruption (estimated)
Historical eruption (estimated)
Historical eruption (estimated)
Historical eruption (estimated)
Historical eruption (estimated)
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Historical eruption (estimated)
Historical eruption (estimated)
Historical eruption (estimated)
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Historical eruption (estimated)
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Overview
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.
Volcanic Hazards & Risk Assessment
Primary Hazards
Risk Level
Geological Composition & Structure
Rock Types
Tectonic Setting
Age & Formation
Eruption Statistics & Analysis
| Metric | Value | Global Ranking | Significance |
|---|---|---|---|
| Total Recorded Eruptions | 14 | Moderate | Moderately active volcano |
| Maximum VEI | VEI 3 | Moderate | Local impact potential |
| Recent Activity | 5 years ago | Very Recent | Currently active |
Monitoring & Alert Status
Monitoring Networks
Current Status
Nearby Volcanoes in Sunda-Banda Volcanic Regions
Quick Info
- •Smithsonian ID: 264250
- •Evidence: Eruption Observed
- •Epoch: Holocene
About the Photo
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 by Volcanological Survey of Indonesia.
Authority Sources
Related Volcanoes
Basic Information
This page shows basic data from the Smithsonian Global Volcanism Program. For more detailed information, visit the official Smithsonian page.