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Japan · Stratovolcano

Aogashima

Type
Stratovolcano
Elevation
423m
Last eruption
1785
Aogashima
Photo: Soica2001 (talk) · Public domain · Wikimedia Commons
Type
Stratovolcano
Country
Japan
Region
Northwestern Pacific / Izu Volcanic Arc
Elevation
423m
Coordinates
32.458, 139.759
Last eruption
1785
Tectonic setting
Subduction zone / Oceanic crust (< 15 km)
Landform
Composite
Major rock type
Basalt / Picro-basalt

Geological summary

The small 2.5 x 3.5 km dominantly basaltic island of Aogashima is surrounded by steep cliffs and contains a small 1.7 x 1.5-km-wide caldera.

Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →

From Wikipedia

Aogashima (青ヶ島) is a volcanic island to the south of Japan in northernmost Micronesia. It is the southernmost and most isolated inhabited island of the Izu Islands. The islands border the northeast Philippine Sea and lie north of the Ogasawara Islands. The island lies approximately 358 kilometres (222 mi) south of mainland Tokyo and 64 kilometres (40 mi) south of Hachijō-jima.

Wikipedia · CC BY-SA · Read full article →

Eruption history

7 recordedGlossary

Record summary

Confirmed eruptions
7
Uncertain eruptions
0
Span of confirmed record
1800 BCE (±100 yrs) – 1785
Largest confirmed eruption
VEI 4 (600 BCE)
Confirmed eruptions since 1900
0
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
1800 BCE~1601 BCE · 1 eruptions · max VEI 21203 BCE~1004 BCE · 2 eruptions · max VEI ?607 BCE~408 BCE · 1 eruptions · max VEI 41581~1780 · 3 eruptions · max VEI 31800 BCE1004 BCE10 BCE7861581

Detailed timeline

  1. 1780VEI 3Observed
    1780-07-27 – 1785-05
    Maru-yama, SW part of Ikenosawa crater
  2. 1670VEI 2Observed
    1670 – 1680
    Ikenosawa crater
  3. 1652VEI 3Observed
    1652 – end unknown
    Ikenosawa crater
  4. 600 BCE (±200 yrs)VEI 4Geological estimate
    600 BCE – end unknown
    SE flank (Kintagaura)
  5. 1100 BCE (±300 yrs)VEI ?Geological estimate
    1100 BCE – end unknown
    NNW flank
  6. 1200 BCE (±50 yrs)VEI ?Geological estimate
    1200 BCE – end unknown
  7. 1800 BCE (±100 yrs)VEI 2Geological estimate
    1800 BCE – end unknown
    Northwest flank

Nearby volcanoes

External links

⚠ For reference only. Not for emergency response.