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
北京十三陵地区古地理图(a,据 王鸿祯,1985 ;有修改)及九龙山组剖面地层柱状图(b)