1. 1MARUM−Center for Marine Environmental Sciences, University of Bremen, 28359 Bremen, Germany
2. 2Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA
3. 3School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK
4. 4Department of Geology and Geophysics, Yale University, 210 Whitney Avenue, New Haven, Connecticut 06511, USA
5. 5Faculty of Sciences of Tunis, University of Tunis El Manar, 2092 Tunis, Tunisia
6. 6Department of Geological Sciences and Institute of Arctic and Alpine Research (INSTAAR), University of Colorado Boulder, UCB 450, Boulder, Colorado 80309-0450, USA
7. 7Analytical, Environmental, and Geo-Chemistry, Vrije Universiteit Brussel, B-1050 Brussels, Belgium
8. 8Department of Earth and Environmental Sciences, KU Leuven, 3000 Leuven, Belgium
9. 9National Oceanography Centre Southampton, University of Southampton, Waterfront Campus, European Way, Southampton SO14 3ZH, UK
10. 10Departamento de Ciencias de la Tierra & Instituto Universitario de Ciencias Ambientales, Universidad Zaragoza, 50009 Zaragoza, Spain
11. 11GFZ German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany