北京十三陵地区中侏罗统九龙山组硅质岩成因模式及地质意义

李昆鹏, 邢超超, 沈冰

Analysis of genetic model of siliceous rocks of the Middle Jurassic Jiulongshan Formation in Ming Tombs area in Beijing and their geological significance

Li Kun-Peng, Xing Chao-Chao, Shen Bing

北京十三陵九龙山组样品与河流、热液REE分布特征对比 A—现代河流沉积物、热液REE分配特征(数据来源 Michard,1983 , 1986 , 1989 ; Goldstein and Jacobsen,1988 ; Douville et al. 1999 );B—北京十三陵地区九龙山组剖面研究样品REE分布特征