Geochemical, N concentrations and N isotopic data of the altered basalts recovered from IODP Holes U1500B, U1503A, U1431E, U1433B and U1434A in the South China sea

Supplemental Table S1. Major elements (wt%), trace elements (ppm), N concentration and N-Sr isotopes analyses of standard reference material.
Supplemental Table S2. Major elements (wt%), trace elements (ppm) and Sr isotopes date of the oceanic crust basalts from the SCS.
Supplemental Table S3. Bulk mineral concentrations of Hole U1503A basalts.
Supplementary material. Supplementary Figure; Estimation of N input flux of upper oceanic crust into Manila subduction zone; Proportion of subducted sediments.

补充表S1：标准参考物质的主量元素（wt%）、微量元素（ppm）、氮浓度及氮-锶同位素分析数据。
补充表S2：南海（South China Sea, SCS）洋壳玄武岩的主量元素（wt%）、微量元素（ppm）及锶同位素分析数据。
补充表S3：U1503A钻孔玄武岩的全岩矿物含量。
补充材料：补充图；马尼拉俯冲带洋壳上部氮输入通量估算；俯冲沉积物占比。