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对太平洋１７８７站柱状沉积物进行了碎屑组分分布和来源的研究，并根据碎屑组分的分布特征对火山活动和南极底流活动状况进行探讨。结果表明，沉积物中的碎屑组分主要是生物来源、海洋自生来源和火山源，并推测本柱芯沉积期曾有１１次火山活动期和９次南极底流入侵。在火山活动期，沉积物中火山来源矿物含量显著增加；在南极底流活动期，沉积物中褐铁矿和微结核等形成于氧化环境的矿物含量较高，生物扰动构造发育。所推测的底流活动期在氧同位素曲线上均有明显反映，并与古地磁资料得出的沉积间断基本吻合，表明沉积物的碎屑组分分布特征能间接指示古海洋事件。
Based on the distribution characteristics of detrital components, the volcanic activities and the activities of the Antarctic underflow were discussed. The results show that the detrital components in the sediments are mainly from biological sources, marine authigenic sources and volcanic sources. It is presumed that there were 11 volcanic activities and 9 inflows to the Antarctic. During the volcanic period, the mineral content of volcanic sources in sediments increased significantly. During the period of the Antarctic underflow, the content of minerals such as limonite and micro-nodules formed in the oxidized environment in the sediments was relatively high, and the bioturbation structure developed. The predicted insolation period is obviously reflected in the oxygen isotope curve and basically coincides with the sedimentary discontinuity obtained from the paleomagnetic data, indicating that the distribution of the detrital components of the sediments can indirectly indicate the paleoceanographic events.