| 西菲律宾海盆-马里亚纳海槽区柱状岩芯中钙质超微化石分析及地层时代 |
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| 引用本文： | 李文勤.西菲律宾海盆-马里亚纳海槽区柱状岩芯中钙质超微化石分析及地层时代[J].海洋科学,1991(2). |
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| 作者姓名： | 李文勤 |
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| 作者单位： | 国家海洋局第一海洋研究所 青岛 |
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| 摘 要： | 本文通过对取自西菲律宾海盆及马里亚纳海糟区85kL和77KG,66KG,6lKL,57KL岩芯中钙质超微化石的分析研究,划分了上述岩芯的地层时代。66KG,61KL,57KL地层时代为更新世晚期;77KG0～l0cm和10～20cm地层时代分别为更新世晚、中期;以下(20～30cm)地层时代为早中新世晚期。85kL所处水深位于碳酸盐补偿深度(CCD)以下,岩芯中无化石保存。
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| 关 键 词： | 钙质超微化石 碳酸盐补偿深度 标准化石 |
CALCAREOUS NANNOFOSSILS ANALYSIS AND THE AGE OF CORES FROM WEST PHILIPPINE BASIN-MARIANA TRENCH |
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| Li Wenqin.CALCAREOUS NANNOFOSSILS ANALYSIS AND THE AGE OF CORES FROM WEST PHILIPPINE BASIN-MARIANA TRENCH[J].Marine Sciences,1991(2). |
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| Authors: | Li Wenqin |
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| Abstract: | Through the analysis of the calcareous nannofossils in the cores 85KL, 77KG, 66.KG, 61KL and 57KL from the west Philppine Basin and the Mariana Trench, the strata are divided into different geological ages. The age of 66KG, 61KL, 57KL is of late Pleistocene. The age of stratum (0-10cm and 10-20cm) in the 77KG is. of late Pleistocene and middle Pleistocene respectively. Stratum between 20-30cm is of the later period of the early Miocene. There are no fossils in the core 85KL because it is below the CCD. |
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| Keywords: | Calcareous nannorossils Carbonate compensation depth (CCD) Index fossil |
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