甘肃张掖白垩纪早Aptian期黑色页岩揭示的气候岁差驱动及其意义*
谢琴1,2, 陈家胜1,2, 刘晓静1,2, 刘秀铭1,2,3

Detection of climatic precession variability of black shale in the early Aptian of Cretaceous in Zhangye of Gansu Province and its significance
Xie Qin1,2, Chen Jia-Sheng1,2, Liu Xiao-Jing1,2, Liu Xiu-Ming1,2,3
甘肃张掖南台子下沟组黑色页岩Ⅱ段CaCO3含量、TOC含量和TOC/CN值变化 a—岩性随深度变化曲线;b—CaCO3含量随深度变化曲线;c—TOC含量随深度变化曲线;d—TOC/TN随深度变化曲线