(Table 3) Rb, Sr, Sm and Pb isotopic ratios of basalts obtained during R/V Ak...

Please note, that strontium concentrations in Table 2 and 3 vary considerably. The reason for this is not mentioned in the article.请注意：表2与表3中的锶（strontium）浓度差异显著，本文未提及该差异的成因。