1. Godwin Laboratory for Palaeoclimate Research, Department of Earth Sciences; University of Cambridge; Cambridge UK
2. Geological Institute and Institute of Geochemistry and Petrology; ETH Zurich; Zurich Switzerland
3. Scott Polar Research Institute, Department of Geography; University of Cambridge; Cambridge UK
4. Departamento de Estratigrafía y Paleontología; Universidad de Granada; Granada Spain
5. MARUM-Center for Marine Environmental Sciences; University of Bremen; Bremen Germany
6. Department of Environmental Chemistry; Institute of Environmental Assessment and Water Research (IDAEA), Spanish Council for Scientific Research (CSIC); Barcelona Spain