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对西菲律宾海MD06-3047和MD06-3050两个柱状样第四纪沉积物进行了钙质超微化石和微玻陨石分析.经过鉴定统计,识别出自2.36Ma以来的7个钙质超微化石地层学事件,分别是Discoaster brouweri的末现、Calcidiscus macintyrei的末现、Large Gephyrocapsa的初现、Large Gephyrocapsa的末现、Pseudoemiliania lacunosa的末现、Gephyrocapsa caribbeanica的快速增长、以及Emiliania huxleyi的初现.同时,在MD06-3050柱状样岩芯1340~1374cm层位发现大量微玻陨石.通过氧同位素年代曲线对比,得出这些钙质超微化石生物学事件和微玻陨石事件的年龄.
Calcareous microfossils and microlite glass were analyzed for two columnar-like Quaternary sediments in West Philippine Sea (MD06-3047) and MD06-3050. After identification and analysis, seven calcareous nannofossils from 2.36Ma Stratigraphy events are the end of Discoaster brouweri, the end of Calcidiscus macintyrei, the appearance of Large Gephyrocapsa, the end of Large Gephyrocapsa, the end of Pseudoemiliania lacunosa, the rapid growth of Gephyrocapsa caribbeanica and the beginning of Emiliania huxleyi. , A large number of microglite meteorites were found in the layers of 1340 ~ 1374cm in the core of MD06-3050 column.The ages of these calcareous nannofossil biological events and microlite glass events were obtained by comparing the ages of oxygen isotopes.