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详细的沉积相分析表明,皖南蓝田盆地上震旦统蓝田组由局限台地相、陆棚相和陆棚边缘盆地相组成。以Mo/Mn和V/(V+Ni)比率相结合作为氧化还原环境指标,确认缺氧还原环境是蓝田组的重要特征之一。以Cl含量和Sr/Ba比率相结合作为古盐度指标,蓝田组有两个高盐度期。蓝田组沉积环境演化旋回性明显,由两个完整的旋回组成。
The detailed analysis of sedimentary facies shows that the Upper Sinian Lantian Formation in the Lantian Basin of southern Anhui consists of the limited platform facies, continental shelf facies and marginal continental shelf. Taking the ratio of Mo / Mn and V / (V + Ni) as the index of redox environment, it was confirmed that the anoxic oxygen reduction environment is one of the important characteristics of the Lantian Formation. Taking the combination of Cl content and Sr / Ba ratio as an index of ancient salinity, there are two high salinity periods in the Lantian Formation. The evolution of sedimentary environment in the Lantian Formation is obviously cyclic and consists of two complete cycles.