Chagulak
Stratovolcano in United States
Key Facts
Elevation
1,028 m (3,373 ft)
Type
Stratovolcano
Location
52.572°, -171.138°
Region
Aleutian Ridge Volcanic Arc
Rock Type
Andesite / Basaltic Andesite
Tectonic Setting
Subduction zone
Location
Loading map...
Overview
The 3-km-diameter island of Chagulak is the exposed summit of a stratovolcano in the Islands of the Four Mountains group of the Aleutians. The sharp-topped summit is ~11 km NE of the summit of Amukta and 35 km W of Yunaska volcano. The visible edifice is steep and strongly eroded.
No eruptions have been recorded and its age is not precisely known.
Volcanic Hazards & Risk Assessment
Primary Hazards
- Pyroclastic flows
- Lava flows
- Volcanic bombs and ballistics
- Lahars and mudflows
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 | Unknown | Historical | Historically active |
Monitoring & Alert Status
Monitoring Networks
Current Status
Nearby Volcanoes in North America Volcanic Regions
Quick Info
- •Smithsonian ID: 311200
- •Evidence: Evidence Uncertain
- •Epoch: Holocene
About the Photo
The eastern side of the Chagulak volcano is seen here in the foreground and Amukta is in the background. The two volcanoes join at depth but at the surface they are separated by 7 km of ocean.
Photo by Fred Deines, 1992 (U.S. Fish and Wildlife Service).
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.