The Baideng phosphorite deposit is of shallow-seafacies; while the Qinglongshao phosphorite belongs to continental facies.
白登磷矿是我国重要的浅海相磷块岩矿床，而青龙哨磷矿是我国重要的陆相磷块岩矿床。
2
The sedimentation environment transformed from the fluvial and lake facies to the shallow seafacies, and finally to the deep seafacies.
沉积环境经历了河流-湖泊、浅海和深海的演化过程。
3
The weathering crust of Majiagou Formation in Ordovician of Changqing Gasfield in Ordos Basin is the major pay zone with the evaporated marginal seafacies.