摘要
The siliceous rocks in the barite deposits of Devonian from Zhenning County revealed some characteristics. Characteristics of ∑REE, Ce/Ce*, Eu/Eu*, (La/Ce)N and (La/Lu)N indicate that during the diagenetic process of the siliceous rocks obvious evidences related to involvement of hydrothermal venting-flowing were observed, indicating its hydrothermal genesis, the paragenetic relationship of hydrothermal sedimentogenic silicious rocks and barite deposits manifest that the barite deposits were formed by hydrothermal exhalative mineralization. They were deposited in the platform basin facies that controlled by a syngenetic deep faults structure of Shuicheng-Ziyun-Nandan during the Late Palaeozoic.