Singkut
Caldera(s) in Indonesia
Key Facts
Elevation
2,181 m (7,156 ft)
Type
Caldera(s)
Location
3.238°, 98.513°
Region
Sunda Volcanic Arc
Rock Type
Andesite / Basaltic Andesite
Tectonic Setting
Subduction zone
Location
Loading map...
Overview
The Quaternary Singkut caldera is about 7 x 4 km with the S half of the rim topographically distinct. Post-caldera cones have filled much of the crater and the N rim, including Sibayak, Pintau, and Pratektekan. The 900-m-wide Sibayak crater is partially filled on the north by Pintau.
A lava flow traveled through a gap in the western crater wall from the summit lava dome of Sibayak; the active geothermal field SE of the summit has abundant solfataras and fumaroles. Area residents record legends of eruptions. Neumann van Padang (1983) cited a report by Hoekstra of ash clouds emitted from the volcano in 1881.
The town of Berastagi is within the caldera immediately SE of the younger cones.
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 | Unknown | Low | Moderately active volcano |
| Maximum VEI | VEI Unknown | Minor | Local impact potential |
| Recent Activity | 145 years ago | Historical | Historically active |
Monitoring & Alert Status
Monitoring Networks
Current Status
Nearby Volcanoes in Sunda-Banda Volcanic Regions
Quick Info
- •Smithsonian ID: 261070
- •Evidence: Eruption Observed
- •Epoch: Holocene
About the Photo
Sibayak and Mt. Pinto are located within the Singkut caldera in NE Sumatra. The slightly higher Pinto partially overtops the 900-m-wide crater of Sibayak to the N. The summit contains a lava dome and an area of hydrothermal alteration visible in this photo. An ash eruption from Sibayak was recorded in 1881, and nearby residents have legends of eruptions.
Photo by Tom Casadevall, 1987 (U.S. Geological Survey).
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.