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Sulu Range

Stratovolcano(es) in Papua New Guinea

Key Facts

Elevation

610 m (2,001 ft)

Type

Stratovolcano(es)

Location

-5.500°, 150.942°

Region

Bismarck Volcanic Arc

Rock Type

Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone

Location

Loading map...

Overview

The Sulu Range consists of a cluster of partially overlapping small stratovolcanoes and lava domes in north-central New Britain off Bangula Bay. The 610-m Mount Malopu at the southern end forms the high point of the basaltic-to-rhyolitic complex. Kaiamu maar forms a peninsula with a small lake extending about 1 km into Bangula Bay at the NW side of the Sulu Range.

The Walo hydrothermal area, consisting of solfataras and mud pots, lies on the coastal plain west of the SW base of the Sulu Range. No historical eruptions are known from the Sulu Range, although some of the cones display a relatively undissected morphology. A vigorous new fumarolic vent opened in 2006, preceded by vegetation die-off, seismicity, and dust-producing landslides.

Volcanic Hazards & Risk Assessment

Primary Hazards

    Risk Level

    Population at RiskModerate
    Infrastructure RiskModerate
    Aviation RiskSignificant

    Geological Composition & Structure

    Rock Types

    Primary
    Andesite / Basaltic Andesite
    Silica Content
    Intermediate (57-63% SiO₂)

    Tectonic Setting

    Subduction zone
    Formed by oceanic plate subduction, typically producing explosive eruptions due to water-rich magmas.

    Age & Formation

    Epoch
    Holocene
    Evidence
    Unrest / Holocene

    Eruption Statistics & Analysis

    MetricValueGlobal RankingSignificance
    Total Recorded EruptionsUnknownLowModerately active volcano
    Maximum VEIVEI UnknownMinorLocal impact potential
    Recent ActivityUnknownHistoricalHistorically active

    Monitoring & Alert Status

    Monitoring Networks

    Global Volcanism Program
    International eruption database

    Current Status

    Normal
    No recent activity. Routine monitoring continues.

    Nearby Volcanoes in Southwestern Pacific Volcanic Regions

    Regional Volcanic Activity
    The Southwestern Pacific Volcanic Regions contains multiple active volcanic systems. Cross-regional magma interactions and tectonic stresses can influence eruption patterns across the entire arc. Monitor regional seismic activity and volcanic alerts.

    Quick Info

    • Smithsonian ID: 252090
    • Evidence: Unrest / Holocene
    • Epoch: Holocene

    About the Photo

    Forested volcanoes of the Sulu Range occupy the center of this NASA Landsat image (N is to the top) of west-central New Britain. This group of partially overlapping small volcanoes and lava domes off Bangula Bay reaches heights of about 600 m. Mount Karai, also known as Mount Ruckenberg, lies on the NE side of the geochemically diverse, basaltic-to-rhyolitic complex. Kaiamu maar forms the peninsula extending about 1 km into Bangula Bay at the NW side of the Sulu Range.

    NASA Landsat7 image (worldwind.arc.nasa.gov)

    Basic Information

    This page shows basic data from the Smithsonian Global Volcanism Program. For more detailed information, visit the official Smithsonian page.