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 |
|---|---|---|---|
| c. 950 | — | 2 | East flank? · Correlation: Tephrochronology |
| c. 200 | — | 2 | Correlation: Tephrochronology |
| c. 300 BCE | — | 2 | Correlation: Tephrochronology |
| c. 400 BCE | — | 2 | Correlation: Tephrochronology |
| 550 BCE ± 1,000 years | — | 2 | Correlation: Tephrochronology |
| c. 1,850 BCE | — | 1 | SSE flank (2100 m) · Correlation: Tephrochronology |
| 2,650 BCE ± 300 years | — | 2 | Correlation: Tephrochronology |
| 2,950 BCE ± 100 years | — | 1 | SSE flank (2600 m) · Correlation: Tephrochronology |
| 3,250 BCE ± 300 years | — | 2 | Correlation: Tephrochronology |
| c. 3,550 BCE | — | 2 | Correlation: Tephrochronology |
| 3,800 BCE ± 1,950 years | — | 1 | NNE flank (2100-2250 m) · Correlation: Tephrochronology |
| 4,050 BCE ± 500 years | — | 2 | Upper SW flank? · Correlation: Tephrochronology |
| c. 4,550 BCE | — | 2 | NW flank (2200-2400 m) · Correlation: Tephrochronology |
| 5,150 BCE ± 500 years | — | 2 | Correlation: Tephrochronology |
| 7,050 BCE ± 1,000 years | — | 2 | Correlation: Tephrochronology |
Data: Global Volcanism Program, Smithsonian Institution (#321040)