对华北中元古代海侵初期“河流相”沉积的重新认识:以天津蓟县剖面为例
钟焱1,2, 赵亮东1,2, 陈留勤1,2, 梅冥相1,2

New understanding of “fluvial facies” deposition of the early transgression period of Mesoproterozoic: An example from Jixian section in Tianjin
Zhong Yan1,2, Zhao Liangdong1,2, Chen Liuqin1,2, Mei Mingxian g1,2
常州沟组一段及二段底部样品粒度分析结果(a—一段样品;b—二段底部样品;1—累积曲线;2—概率累积曲线;3—频率曲线; X —平均值; K —峰度; S 0—分选系数; S k—偏度)