Katie is currently a Research Associate at SUERC. She is reconstructing the eruptive history of Ascension by combining data collected during fieldwork on the island, with analyses in the laboratory. The rocks hold clues to Ascension’s fiery history. Therefore, by making detailed observations and measurements of the rocks on the island, Katie will be able to shed light on the number and style of eruptions that have occurred in the past. She is using state of the art 40Ar/39Ar dating of the rocks to reveal the age and frequency of these eruptions and will uncover when Ascension last erupted.