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选择马尔库斯-威克海山区和麦哲伦海山区的2块壳结纹层记录,进行生物地层学的精细研究,并利用钙质超微化石的生物印痕分出时代:马尔库斯-威克海山CM1D03年代为晚古新世到更新世,而麦哲伦海山CM3D06结壳年代则更久远些——白垩纪晚期(约大于70.0 Ma),这表明不同海山的富钴结壳最初形成年代和富集特征具有显著的时空差异性,而不同海山结壳层内部的古微体化石组合面貌、分布特征上的差别表明有关属种对大洋不同环境的适应性差异所致.本文还利用结壳纹层中所保存的钙质超微化石种群数进行生态学研究,寻找钙质超微化石变化与古新世末至渐新世初(E/O)界限地质事件的联系,研究发现在E/O界线之交(对应CM1D03结壳的25 mm和CM3D06结壳的58mm附近)生物群落发生明显演替和重组,这些生物群落在E/O界限上下的改变所形成独特的生态结构,无疑反映了西太平洋古生物群落对全球冷事件存在明显响应,也说明结壳生长过程与全球气候变化有着紧密联系.
Two crustal knot patterns were recorded in the Marcuse-Wick Sea and Magellan Mountains, and bio-stratigraphic studies were carried out. The age of the Marukas-Wick Seamount CM1D03 is the newest to the newest, while the Magellan seamount CM3D06 is much older - Cretaceous (about 70.0 Ma), indicating that the cobalt-rich crusts of different seamounts were first formed and enriched The differences in the distribution and features of the assemblages of the ancient fossil fossils within the different seamounts of the seamounts are caused by the differences in the adaptability of the genera to different environments in the ocean.In this paper, In order to find out the relationship between the changes of calcareous microfossils and the geological events from the Late Paleocene to the Early Oligocene (E / O). The study found that in the E / O At the junction of the boundary line (corresponding to 25 mm of CM1D03 crust and 58 mm of CM3D06 crust), significant succession and reorganization of the biomes occurred. The unique ecological structure formed by these biomes changing above and below the E / O boundary undoubtedly reflected the west Pacific paleontology Community obvious response to global cooling event, also shows crusts growth and global climate change are closely linked.