黔西南那郎金矿矿床特征及演化分析

The characteristics and evolution of nalang gold deposit in southwestern guizhou

那郎金矿构造位置处于江南复合造山带,主要构造方向为北东向及北西向。沉积环境经历由海转陆的相变阶段,出路的地层主要有海相的二叠系碳酸盐岩及三叠系陆源碎屑岩。矿体以断控型为主,土型金矿为辅,导矿通道为深部大断裂,赋矿位置为背斜构造及两翼断层。本文通过实地调查并结合已有的资料,对矿区的沉积历史,构造演变及成矿进行了简要分析,并对下一步工作提出了建议。

The nalang gold deposit is located in the jiangnan composite orogenic belt,and the main tectonic directions are nne and nw.The sedimentary environment underwent a phase transition from sea to land,and the main strata of the outlet were Marine Permian carbonate rocks and Triassic terrigenous clastic rocks.The ore body is dominated by fault-controlled type,supplemented by earth-type gold deposit,and the ore channel is a deep fault.Based on the field investigation and the existing data,this paper briefly analyzes the sedimentary history,tectonic evolution and mineralization of the mining area,and puts forward some Suggestions for the next step.