Ellen R M Druffel¹, Sheila Griffin², Ning Wang^3,4, Christian Blair Lewis¹, Noreen Garcia², Niels Hauksson¹, Ann P McNichol⁵, Robert M Key⁶ and Brett Walker⁷, (1)University of California Irvine, Earth System Science, Irvine, CA, United States, (2)University of California Irvine, Irvine, CA, United States, (3)Nanjing University, Nanjing, China, (4)Chinese Academy of Sciences, State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry,, Beijing, China, (5)Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, (6)Princeton Univ, Princeton, NJ, United States, (7)University of Ottawa, Department of Earth and Environmental Sciences, Ottawa, ON, Canada