Eruption history
VEI – Volcanic Explosivity Index: 0 = lava outpouring, 4 = like Eyjafjallajökull 2010, 6 = like Pinatubo 1991, 7 = like Tambora 1815. The scale is logarithmic – each step is about 10 times more material.
| Start | End | VEI | Vent and dating |
|---|---|---|---|
| 29 August 885 | 28 September 885 | 4 | Kaimon · Observations: Reported |
| 29 March 874 | July 874 | 4 | Kaimon · Observations: Reported |
| c. 770 | — | 4 | Kaimon · Correlation: Tephrochronology |
| c. 720 | — | 4 | Kaimon · Correlation: Tephrochronology |
| c. 660 | — | 4 | Kaimon · Correlation: Tephrochronology |
| c. 600 | — | 4 | Kaimon · Correlation: Tephrochronology |
| c. 550 | — | 2 | Kaimon · Correlation: Tephrochronology |
| c. 270 | — | 3 | Kaimon · Correlation: Tephrochronology |
| c. 150 | — | 4 | Kaimon · Correlation: Tephrochronology |
| c. 130 | — | 4 | Kaimon · Correlation: Tephrochronology |
| c. 30 | — | 3 | Kaimon · Correlation: Tephrochronology |
| c. 80 BCE | — | 4 | Kaimon · Correlation: Tephrochronology |
| c. 270 BCE | — | 4 | Kaimon · Correlation: Tephrochronology |
| c. 650 BCE | — | 4 | Kaimon · Correlation: Tephrochronology |
| c. 700 BCE | — | 2 | Kaimon · Correlation: Tephrochronology |
| c. 1,450 BCE | — | ? | Mizunashi, Kagami, Ikezoko maars · Correlation: Tephrochronology |
| c. 1,500 BCE | — | 4 | Kaimon · Correlation: Tephrochronology |
| c. 1,550 BCE | — | ? | Nabeshima-dake · Correlation: Tephrochronology |
| c. 1,610 BCE | — | 3 | Kaimon · Correlation: Tephrochronology |
| c. 1,780 BCE | — | 4 | Kaimon · Correlation: Tephrochronology |
| c. 2,010 BCE | — | 4 | Kaimon · Correlation: Tephrochronology |
| 2,690 BCE ± 75 years | — | 5 | Ikeda-ko caldera · Isotopic: 14C (uncalibrated) |
| c. 5,050 BCE | — | ? | Unagi, Narikawa and Yamakawa maars · Correlation: Tephrochronology |
Data: Global Volcanism Program, Smithsonian Institution (#282070)