(Table 2) epsilon-Nd values for ODP Sites 121-758 and 121-157@en

Sediment depth is given in mbsf. Comparison of epsilonNd measured by our technique (acetic acid leach) and standard methods (Burton and Vance, 2000; Bayon et al., 2002). Comparisons were performed on the same sample or on successive sampling at the same depth in the same core. Comparison with Burton and Vance (2000)'s data were performed on Site ODP 758. Comparison with the Bayon et al., 2002 method was performed on Sites ODP 758, 757 and 707. All techniques give undistinguishable results within the statistical errors. Are also presented duplicates obtained with our method on separate sub-samples.沉积物深度以米深海海底以下（meters below sea floor，简称mbsf）为单位。本研究对采用乙酸浸提（acetic acid leach）技术测得的εNd值（epsilonNd）与两类标准方法（Burton与Vance，2000；Bayon等，2002）的测试结果开展了对比。对比实验均采用同一岩芯的同一样品，或同一岩芯内同一深度的连续采样样品进行。其中，与Burton和Vance（2000）的数据对比仅在大洋钻探计划（Ocean Drilling Program，简称ODP）758站位实施；与Bayon等（2002）方法的对比则覆盖ODP 758、757及707三个站位。所有测试方法的结果在统计误差范围内均无显著差异。此外，本研究还展示了采用本方法对独立子样进行测试得到的平行样数据。