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. 1600 | — | ? | Alney volcano · Isotopic: 14C (uncalibrated) |
| 650 BCE ± 75 years | — | 3 | East flank of Alney (Kireunsky) · Isotopic: 14C (uncalibrated) |
| 660 BCE ± 75 years | — | 3 | E of Chashakondzha (Levaya Belaya) · Isotopic: 14C (uncalibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#300450)