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 |
|---|---|---|---|
| 1690 ± 10 years | — | 3 | SE flank · Observations: Reported |
| c. 1,350 BCE | — | ? | Northern flank · Isotopic: 14C (uncalibrated) |
| c. 4,050 BCE | — | ? | NW flank (Gorely) · Correlation: Tephrochronology |
| c. 4,550 BCE | — | ? | Eastern cone · Isotopic: 14C (uncalibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#300020)