1. Geomicrobiology Research Group, Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR), The Open University, Milton Keynes, UK.
2. Volcano Dynamics Group, Department of Earth Sciences, The Open University, Milton Keynes, UK.
3. Edinburgh Sequencing Facility, Institute of Evolutionary Biology, University of Edinburgh, Edinburgh, UK.
4. Centre of Geosciences, University of Göttingen, Department of Geobiology, Göttingen, Germany.
5. Hydrology Division, National Energy Authority, Reykjavik, Iceland.
6. Department of Earth Sciences, The Open University, Milton Keynes, UK.