摘要
本文论述了633-2铀矿床断裂与成矿之间的规律性。它立足于地质构造动力学说和多阶段叠加成矿的观点,应用莫尔力学强度理论和有限单元法、赤平极射投影、数理统计的分析方法,不仅对成矿构造应力场和叠加断裂作用进行了理论分析,还对不同成矿阶段叠加矿化强度进行了数值计算。研究结果表明,633-2铀矿床断裂与成矿之间在空间上有明显的关系。
This paper deals with the relation of faulting to mineralization in the 633-2 uranium deposit. Based on dynamic theory of geologic structure and viewpoint of polystage superimposed mineralization, the authors, using Mohr's theory of mechnical strength, finite element method, stereographic projection and mathematical statistics, not only made an theoretical analysis of ore-forming tectonic stress field and superimposed faulting, but performed numerical calculation for superimposed mineralization intensity of different ore-forming stages as well. The results obtained show that obvious spatial and temporal relationship between faulting and mineralization does exist in the 633-2 uranium deposit. In the ore-forming process, the previously-formed faults produced three times of uperimposed faulting, accompanied by three times of superimposed mineralization; mineralization intensity epended largely on the properties and types of superimposed faults, and spatial distribution of orebodies was ecided by tectonic stress field at the ore-forming stage and characteristics of ore-bearing faults.
出处
《矿床地质》
CAS
CSCD
北大核心
1990年第4期363-370,共8页
Mineral Deposits
