LIU, Xiao-Ming, Department of Earth, Marine and Environmental Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3315, KAH, Linda, Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996, KNOLL, Andrew H., Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, NC 02138, CUI, Huan, Stable Isotope Laboratory, Department of Earth Sciences, University of Toronto, Toronto, ON ON M5S, Canada; Department of Geosciences, Mississippi State University, Mississippi State, MS 39762, WANG, Chao, 104 South RD., 213 Mitchell Hall, Chapel Hill, NC 27599; Department of Earth, Marine and Environmental Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3315, BEKKER, Andrey, Dept. of Earth and Planetary Sciences, Univ. of California, Riverside, 900 University Avenue, Riverside, CA 92521 and HAZEN, Robert M., Earth and Planets Laboratory, Carnegie Institution for Science, 5251 Broad Branch Road NW, Washington, DC 20015