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 |
|---|---|---|---|
| 50 BCE ± 100 years | — | 6 | Apoyeque · Correlation: Tephrochronology |
| 1,050 BCE ± 1,000 years | — | 4 | Correlation: Tephrochronology |
| 2,550 BCE ± 1,500 years | — | 5 | W Chiltepe Peninsula · Correlation: Tephrochronology |
| 4,160 BCE ± 30 years | — | 5 | Laguna Xiloá · Isotopic: 14C (uncalibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#344091)