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 |
|---|---|---|---|
| 2 July 1840 | — | 3 | Upper northern flank · Observations: Reported |
| 550 BCE | — | ? | Summit (?) and north flank · Correlation: Anthropology |
| 2,450 BCE ± 50 years | — | ? | NW flank · Correlation: Anthropology |
Data: Global Volcanism Program, Smithsonian Institution (#213040)