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 |
|---|---|---|---|
| 17 March 2006 | 17 March 2006 | 1 | Green Lake crater · Observations: Reported |
| 19 November 1964 | 25 April 1965 | 2 | West side of Green Lake, Denham caldera · Observations: Reported |
| 16 March 1886 | — | 0 | NNE flank (7.5 km from Raoul Island) · Observations: Reported |
| 20 June 1870 | 3 October 1870 | 3 | Denham caldera, Green Lake · Observations: Reported |
| 9 March 1814 | — | 3 | Denham caldera and Smith Crater · Observations: Reported |
| 1720 ± 50 years | — | 4 | Denham Bay?, Tui Lake Crater · Isotopic: 14C (uncalibrated) |
| 1630 ± 50 years | — | 4 | Rangitahua Crater · Isotopic: 14C (uncalibrated) |
| c. 1450 | — | ? | NE of Raoul Island (Meyer Islands) · Correlation: Tephrochronology |
| c. 850 | — | 4 | Expedition Crater · Correlation: Tephrochronology |
| c. 700 | — | 3 | Pukekohu Crater · Correlation: Tephrochronology |
| c. 550 | — | 4 | Green Lake Pumice Crater · Isotopic: 14C (uncalibrated) |
| c. 400 | — | 4 | S part Raoul Caldera · Correlation: Tephrochronology |
| c. 100 | — | 4 | N flank Moumoukai volcano · Correlation: Tephrochronology |
| c. 50 BCE | — | 3 | Denham caldera? · Correlation: Tephrochronology |
| 250 BCE ± 75 years | — | 6 | Denham caldera · Isotopic: 14C (uncalibrated) |
| 1,200 BCE ± 150 years | — | 4 | SW part of Raoul caldera · Isotopic: 14C (uncalibrated) |
| 2,000 BCE ± 100 years | — | 4 | SE Raoul caldera · Isotopic: 14C (uncalibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#242030)