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南海北部ODP 1148A孔(18°50.17′N, 116°33.93′E, 水深3308.3 m)中新世24-5 Ma底栖有孔Cibicidoides wuellerstorfi 和 C. kullenbergi及18-5 Ma浮游有孔虫Globigerinoides sacculifer两者的δ13C曲线总体上同步波动, 呈现由早-中期重值向晚期轻值的演化趋势; 记录了早-中期23.1-22.2和17.3-13.6 Ma两次显著的正位移和晚期10.2-9.4和6.9-6.2 Ma的两次负位移, 这些位移都具全球意义, 为南海与全球进行同位素地层学对比提供了基础, 更是研究全球碳储库及其相关的气候变化的重要资料.
ODP 1148A Holes (18 ° 50.17’N, 116 ° 33.93’E, 3308.3 m) in the northern South China Sea Cibicidoides wuellerstorfi and C. kullenbergi and 18-5 Ma Holocene Globigerinoides sacculifer The δ13C curves of the two curves fluctuated synchronously as a whole, showing a trend of evolution from early to mid-term heavy values to late light values. Two significant positive and early phases of early and mid-term 23.1-22.2 and 17.3-13.6 Ma were recorded The two negative displacements of 6.9-6.2 Ma, all of which have global significance, provide the basis for the isotope stratigraphy comparison between the South China Sea and the world. They are also important information for studying the global carbon storage and its related climate change.