燕山地区京西坳陷青白口地区新元古界沉积相演化*
郭芪恒, 金振奎, 朱小二, 李硕, 史书婷, 王俊杰, 程逸凡

Sedimentary facies evolution of the Neoproterozoic in Qingbaikou area of Jingxi Depression, Yanshan region
Guo Qi-Heng, Jin Zhen-Kui, Zhu Xiao-Er, Li Shuo, Shi Shu-Ting, Wang Jun-Jie, Cheng Yi-Fan
京西坳陷青白口地区下马岭组砂质碎屑流特征 a—下马岭组砂质碎屑流岩性柱状图;b—下马岭组砂质碎屑流野外照片,照片点位①;c—平行层面的泥岩撕裂屑,单偏光,采样点位①;d—泥岩软沉积变形褶皱,单偏光,采样点位①