Geochemical data for research paper titled "EM1-signature in the North Fiji Basin: Evidence for stagnant slab-derived mantle upwelling beneath the trench-distal back-arc basin"

(1) Table S1. Major and trace elements, Sr-Nd-Pb-He isotope data for analyzed Central Spreading Ridge basalts (2) Table S2. Geologic reference materials analyzed for major and trace elements and Sr-Nd-Pb-He isotopes (3) Table S3. Result of principal component analysis (PCA) of the selected geochemical proxies of the CSR basalts with those from other locations (4) Table S4. Reference data (major and trace elements, and isotopic ratios) from literatures used in some plots for comparison