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 |
|---|---|---|---|
| 960 ± 10 years | — | 2 | Raudhalsar · Correlation: Anthropology |
| 665 BCE ± 100 years | — | 2 | Ytri and Stóri Raudamelskula · Isotopic: 14C (uncalibrated) |
| 1,750 BCE ± 150 years | — | 2 | Grábrók · Isotopic: 14C (uncalibrated) |
| c. 2,050 BCE | — | 3 | Krothraunskula, Raudakúla, Graakula · Correlation: Tephrochronology |
| c. 7,050 BCE | — | 2 | Eldborg · Correlation: Tephrochronology |
Data: Global Volcanism Program, Smithsonian Institution (#370030)