United States · Stratovolcano
Alamagan
- Type
- Stratovolcano
- Elevation
- 744m
- Last eruption
- 870
- Type
- Stratovolcano
- Country
- United States
- Region
- Northwestern Pacific / Mariana Volcanic Arc
- Elevation
- 744m
- Coordinates
- 17.600, 145.830
- Last eruption
- 870
- Tectonic setting
- Subduction zone / Crustal thickness unknown
- Landform
- Composite
- Major rock type
- Andesite / Basaltic andesite
Geological summary
Alamagan is the emergent summit of a large stratovolcano in the central Mariana Islands with a roughly 350-m-deep summit crater east of the center of the island.
Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →
From Wikipedia
Alamagan is an island in the Northern Mariana Islands in the Pacific Ocean, 30 kilometres (16 nmi) north of Guguan, 250 kilometres (135 nmi) north of Saipan, and 60 kilometres (32 nmi) south of Pagan. It is currently undergoing resettlement since 2018, with a few people living there. The project was coordinated by the Northern Islands Mayor's office and the people there have radio contact with the mainland.
Wikipedia · CC BY-SA · Read full article →
Eruption history
4 recordedGlossaryRecord summary
- Confirmed eruptions
- 2
- Uncertain eruptions
- 2
- Span of confirmed record
- 540 (±75 yrs) – 870
- Largest confirmed eruption
- VEI 4 (870)
- Confirmed eruptions since 1900
- 0
Detailed timeline
- 1887VEI ?Method not stated1887-11-29 – end unknown
- 1864VEI ?Method not stated1864-01-16 – end unknown
- 870 (±100 yrs)VEI 4Geological estimate870 – end unknown
- 540 (±75 yrs)VEI ?Geological estimate540 – end unknown
Nearby volcanoes
External links
⚠ For reference only. Not for emergency response.