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 |
|---|---|---|---|
| 399 ± 149 years | — | 3 | Xitle · Isotopic: 14C (calibrated) |
| 203 ± 131 years | — | 3 | Chichinautzin · Isotopic: 14C (calibrated) |
| 2,238 BCE ± 1,413 years | — | 3 | Guespalapa · Isotopic: 14C (calibrated) |
| 4,250 BCE ± 75 years | — | 3 | Tláloc · Isotopic: 14C (uncalibrated) |
| 5,840 BCE ± 500 years | — | ? | Cuauhtzin · Isotopic: 14C (uncalibrated) |
| 7,340 BCE ± 1,050 years | — | 0 | Cerro Tetepetl · Isotopic: 14C (calibrated) |
| 7,370 BCE ± 300 years | — | 4 | Tres Cruces · Isotopic: 14C (calibrated) |
| 7,930 BCE ± 500 years | — | 3 | Volcán Pelado · Isotopic: 14C (uncalibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#341080)