Bristol Isotope Group, Department of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, United Kingdom
Department of Earth Sciences, University of Oxford, Oxford, OX1 3PR, United Kingdom ; Bristol Isotope Group, Department of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, United Kingdom
Bristol Isotope Group, Department of Earth Sciences, University of Bristol, Bristol, BS8 1RJ, United Kingdom