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 |
|---|---|---|---|
| 5 July 1854 | — | 3 | Observations: Reported |
| c. 1250 | — | 3 | Correlation: Tephrochronology |
| 1,590 BCE ± 70 years | — | 3 | Isotopic: 14C (calibrated) |
| c. 1,850 BCE | — | 1 | Correlation: Tephrochronology |
| c. 3,150 BCE | — | 3 | Correlation: Tephrochronology |
| c. 3,850 BCE | — | 2 | Correlation: Tephrochronology |
| c. 4,850 BCE | — | 1 | Correlation: Tephrochronology |
| c. 5,250 BCE | — | 2 | Correlation: Tephrochronology |
| 5,340 BCE ± 30 years | — | 3 | Isotopic: 14C (calibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#290340)