Bridging the gap: 40Ar/39Ar dating of volcanic eruptions from the ‘Age of Discovery’

  title={Bridging the gap: 40Ar/39Ar dating of volcanic eruptions from the ‘Age of Discovery’},
  author={Katie J. Preece and Darren F. Mark and Jenni Barclay and Benjamin E. Cohen and Katy J. Chamberlain and Claire Jowitt and Charlotte Vye-Brown and Richard J. Brown and Scott Hamilton},
Many volcanoes worldwide still have poorly resolved eruption histories, with the date of the last eruption often undetermined. One such example is Ascension Island, where the timing of the last eruption, and consequently, the activity status of the volcano, is unclear. Here, we use the 40Ar/39Ar dating technique to resolve ages of the three youngest lava flows on the island, which are hawaiites and mugearite with 1.5 – 1.9 wt% K2O. In dating these lavas, we provide the first evidence of… 

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