(Appendix 1) 87Sr/86Sr ratios of planktonic foraminifera from DSDP Hole 39-356

87Sr/86Sr values for standards equal 0.710265 for NBS 987, and 0.709175 for seawater samples from the North Atlantic and Central Pacific. Ratios are fractionation corrected to an 86Sr/S8Sr ratio of 0.1194. All samples have been assigned a minimum uncertainty of +/- 22 * 10**-6, equivalent to the variability of repeated analyses of NBS 987标准物质的87锶/86锶（87Sr/86Sr）比值数据如下：NBS 987标准的比值为0.710265，北大西洋与中太平洋海水样品的比值为0.709175。所有比值均以86锶/88锶（86Sr/88Sr）比值0.1194为基准进行分馏校正。所有样品的最小测量不确定度均设定为±22×10^-6，该不确定度与NBS 987的重复分析变异程度一致。