1. Department of Earth Sciences University of Cambridge Cambridge UK
2. Now at College of Earth, Ocean, and Atmospheric Sciences Oregon State University Corvallis OR USA
3. Department of Geology University of Hawai'i at Hilo Hilo HI USA
4. School of Environment, Earth and Ecosystem Sciences The Open University Milton Keynes UK
5. Division of Geological and Planetary Sciences California Institute of Technology Pasadena CA USA
6. USGS Hawaiian Volcano Observatory Hilo HI USA
7. Edinburgh Ion Microprobe Facility School of Geosciences University of Edinburgh Edinburgh UK