1. Faculty of Science, Technology, Engineering and Mathematics, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK
2. Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
3. British Geological Survey, The Lyell Centre, Research Avenue South, Edinburgh EH14 4AP, UK
4. Department of Geography, College of Science, Swansea University, Singleton Park, Swansea SA2 8PP, UK
5. Institute of Geological Sciences, University of Bern, Baltzerstrasse 1, 3012 Bern, Switzerland
6. School of Earth and Ocean Sciences, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK