【摘要】 本文根据冲绳海槽7028站柱状采样取回的岩心,从中挑选出浮游有孔虫壳体作氧同位素分析,从而绘出氧同位素组成相对于岩心深度的变化曲线,获得了该岩心氧同位素组成的变化特征,并作了简要讨论。更多还原

【Abstract】 Oxygen isotopic analysis was made of the planktonic foraminifera shells in cores taken at station 7028 in Okinawa Trough. Based on this analysis a curve of oxygen isotope composition varied with depth of the core was plotted and the features of variation discussed.更多还原