前人的研究已证明,有孔虫壳体的氧同位素组成取决于它们生命活动时的海水温度、生活的水体的同位素以及可能存在的生物体内的生物分馏作用。我们研究了采自我国东海海域一个钻孔中的始新世、上新世及第四纪底栖有孔虫的氧、碳稳定同位素组成。所用属种都为 Previous studies have shown that the composition of oxygen isotopes in foraminifera shells depends on the temperature of seawater in their life activities, the isotopes of living water bodies, and the possible bio-fractionation in living organisms. We studied the oxygen and carbon stable isotopic composition of the benthic foraminifera from the Eocene, Pliocene and Quaternary in a borehole in the East China Sea. The species used are