Central North Island eruption ages

This graph shows all of the ages obtained for the Taupō first millennium eruption, sorted by age, plotted on a digital model of the North Island of New Zealand. Lake Taupō is the caldera from which the eruption occurred. The oldest ages for the eruption are clustered around Lake Taupō, and older ages are located further from the volcano. Researchers interpret this pattern as being caused by contamination of red areas with volcanic carbon dioxide.