Jailolo

Stratovolcano in Indonesia

Key Facts

Elevation

993 m (3,258 ft)

Type

Stratovolcano

Location

1.080°, 127.439°

Region

Halmahera Volcanic Arc

Rock Type

Andesite / Basaltic Andesite

Tectonic Setting

Subduction zone

Location

Loading map...

Overview

The Jailolo volcanic complex forms a peninsula west of Jailolo Bay on the western coast of Halmahera Island. The stratovolcano at the center of the complex has youthful lava flows on its E flank. Small calderas are located to the W and SW.

The westernmost caldera, Idamdehe, truncates an older volcanic edifice. Hot springs occur along the NW coast of the caldera. Kailupa cone forms a small volcanic island off the southern coast of the peninsula.

Hot mudflows were reported shortly prior to 1883, but no eruptions are known.

Volcanic Hazards & Risk Assessment

Primary Hazards

Pyroclastic flows
Lava flows
Volcanic bombs and ballistics
Lahars and mudflows

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

Evidence Credible

Eruption Statistics & Analysis

Metric	Value	Global Ranking	Significance
Total Recorded Eruptions	Unknown	Low	Moderately active volcano
Maximum VEI	VEI Unknown	Minor	Local impact potential
Recent Activity	Unknown	Historical	Historically active

Monitoring & Alert Status

Monitoring Networks

Global Volcanism Program

International eruption database

Current Status

Normal

No recent activity. Routine monitoring continues.

Nearby Volcanoes in Western Pacific Volcanic Regions

Regional Volcanic Activity

The Western 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: 268051
•Evidence: Evidence Credible
•Epoch: Holocene

About the Photo

The Jailolo volcanic complex (center) forms a roughly 10-km-long peninsula west of Jailolo Bay (bottom-right) in this NASA Landsat image (with north to the top). Jailolo stratovolcano in the center of the complex is flanked by small calderas to the west and SW. Kailupa cone forms the east side of the small island off the southern coast of the peninsula. Hot mudflows were reported from Jailolo volcano shortly prior to 1883, but no eruptions are known during historical time.

NASA Landsat 7 image (worldwind.arc.nasa.gov)