(Table 2) Strontium, oxygen, and carbon isotopic data of ODP Holes 119-739C and 119-743A@en

The 87Sr/8 6Sr ratio of NBS 987 is 0.710260 with a total range of ± 0.000026, which is reported as the minimum uncertainty. The modern seawater value based on 11 samples from the North Atlantic and Central Pacific is 0.709175. All ratios are fractionation corrected to an 86Sr/88Sr ratio of 0.1194.NBS 987的87Sr/86Sr比值为0.710260，总不确定度范围为±0.000026，该结果以最小不确定度形式报告。基于北大西洋和中太平洋的11个样品测得的现代海水锶同位素比值为0.709175。所有比值均已进行分馏校正，校正至86Sr/88Sr比值为0.1194。