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。
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.
出处
《海洋科学》
CAS
CSCD
北大核心
1991年第2期56-58,共3页
Marine Sciences
关键词
超微化石
钙质
岩芯
柱状
地层年代
Calcareous nannorossils, Carbonate compensation depth (CCD), Index fossil
