1. A.P. Vinogradov Institute of Geochemistry Siberian Branch of Russian Academy of Sciences Irkutsk Russia
2. Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Research Unit Potsdam Potsdam Germany
3. Facultad de Ingeniería, Laboratorio de análisis isotópico Universidad Andrés Bello Viña del Mar Chile
4. Centro de Investigación para la Sustentabilidad Universidad Andrés Bello Santiago Chile
5. Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research Bremerhaven Germany
6. Institute of Geological Sciences, Palaeontology Freie Universität Berlin Berlin Germany