Fukujin
Stratovolcano in United States
Last Eruption: 1974
Key Facts
Elevation
-217 m (-712 ft)
Type
Stratovolcano
Location
21.930°, 143.470°
Region
Mariana Volcanic Arc
Rock Type
Andesite / Basaltic Andesite
Tectonic Setting
Subduction zone
Location
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Overview
Fukujin seamount in the Mariana Volcanic Arc has risen on occasion to just beneath the ocean surface. Intermittent periods of water discoloration have been observed since the mid-20th century, and eruptions producing floating pumice were noted on several occasions.
Volcanic Hazards & Risk Assessment
Primary Hazards
- Pyroclastic flows
- Lava flows
- Volcanic bombs and ballistics
- Lahars and mudflows
Risk Level
Population at RiskModerate
Infrastructure RiskHigh
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
Eruption Observed
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 | 52 years ago | Historical | Recently active |
Monitoring & Alert Status
Monitoring Networks
Global Volcanism Program
International eruption database
Current Status
Normal
No recent activity. Routine monitoring continues.
Nearby Volcanoes in Northwestern Pacific Volcanic Regions
Regional Volcanic Activity
The Northwestern 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: 284133
- •Evidence: Eruption Observed
- •Epoch: Holocene
Authority Sources
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Basic Information
This page shows basic data from the Smithsonian Global Volcanism Program. For more detailed information, visit the official Smithsonian page.