1. School of Earth Sciences, University College Dublin, Belfield, Dublin 4, Ireland
2. Irish Centre for Research in Applied Geosciences (iCRAG), Belfield, Dublin 4, Ireland
3. Geological Survey Ireland, Beggars Bush, Dublin 4, Ireland
4. Laboratory for Isotope Geology, Swedish Museum of Natural History, SE-104 05 Stockholm, Sweden
5. Institut für Geowissenschaften, Johannes Gutenberg-Universität, 55099 Mainz, Germany
6. Department of Geology, School of Natural Sciences, Trinity College Dublin, Dublin 2, Ireland