World Map › Osorezan
Volcano
Osorezan
Stratovolcano · 878 m · Japan
Osorezan sits on the Okhotsk Plate, in a subduction zone. 1 eruption is known since the end of the last ice age, the most recent in 1787.
- Elevation
- 878 m
- Type
- Stratovolcano
- Tectonic Setting
- Subduction zone, continental crust
- Dominant Rock
- Andesite / Basaltic Andesite
- Plate
- Okhotsk Plate
- Country
- Japan
- Last Eruption
- 1787
- Known Eruptions (Holocene)
- 1
Nearby Cities
Cities of more than 20,000 people within 100 km.
- 61 kmAomori298,000 people
- 66 kmHakodate303,000 people
- 93 kmHachinohe239,000 people
- 96 kmHirosaki175,000 people
Eruption Timeline
Each bar is an eruption; its height shows its explosivity (VEI 0 to 8).
Eruption Uncertain Date
Sources : Global Volcanism Program, 2026. Volcanoes of the World (v. 5.4.0; 7 Aug 2026), Smithsonian Institution, doi:10.5479/si.GVP.VOTW5-2026.5.4 (volcano.si.edu) · NOAA NCEI · USGS · Wikidata