华北中元古代浅海碳酸盐沉淀方式变化:海水氧化还原条件波动的响应?*
吴孟亭1,2, 方浩3, 孙龙飞3, 史晓颖1,3, 汤冬杰1,2

Variations in precipitation pathways of Mesoproterozoic shallow seawater carbonates from North China Platform:response in seawater redox fluctuations?
Wu Meng-Ting1,2, Fang Hao3, Sun Long-Fei3, Shi Xiao-Ying1,3, Tang Dong-Jie1,2
华北蓟县高于庄组、凌源雾迷山组四段下部和蓟县铁岭组地层柱状图和地球化学特征 图中问号处缺乏Ce异常数据,据Ⅰ/(Ca+Mg)值为0 μmol/mol推测Ce/Ce*值约为1(据Zhang et al .,2018;孙龙飞等,2020;周泓屹,2020;有修改)