1. Institute for Geosciences University of Mainz Mainz Germany
2. Institute of Environmental Physics University of Heidelberg Heidelberg Germany
3. Institute of Earth Sciences Heidelberg University Heidelberg Germany
4. Department of Marine Sciences University of Puerto Rico Mayagüez Puerto Rico
5. Earth and Environmental Systems Department Indiana State University Terre Haute IN USA
6. Institute of Geology University of Innsbruck Innsbruck Austria
7. Department of Geology University of Puerto Rico Mayagüez Puerto Rico
8. Climate Geochemistry Department Max Planck Institute for Chemistry Mainz Germany