广西大厂91、92号锡多金属矿体的成矿构造特征

Metallotectonics of the Lodes No.91 and No.92 of the Dachang Sn Orefield in Guangxi

文章以大厂矿田91、92号矿体为主要研究对象,通过对大厂矿田成矿背景及91、92号矿体的矿石构造、成矿构造类型及成矿构造系列等研究,主要取得成果和认识:①大厂矿田91号、92号矿体矿石构造有韵律层纹条带状构造、网脉状构造、节理脉状构造等,矿体成矿构造类型划分为同生沉积型成矿构造、构造型成矿构造和叠加型成矿构造;②通过构造解析,将大厂矿田成矿构造划分为沉积型成矿构造系列、挤压型成矿构造系列、挤压-走滑成矿构造系列三类,分别对应早期(海西期)喷流沉积成矿系列、中期(印支期)剪切带型成矿系列、晚期(燕山期)花岗岩型成矿系列。

This paper has a discussion on ore structure,metallotectonics type and metallotectonics series of the Lodes No.91 and No.92 of the Dachang Sn orefield in Guangxi.The study indicates that ore structures of the lodes No.91 and No.92 of the Dachang Sn Orefield are rhythmic stringing structure,network structure and joint-vein structure,and metallotectonics may be divided into syndepositional,structural and superimposed ones and sedimentary metallotectonics series,compressional metallotectonics series and compression-strike-slip metallotectonics series which are corresponding to sedimentary exhalative minerogenetic series of ore deposits in the Hercynian epoch,shearing minerogenetic series of ore deposits in the Indo-Sinian epoch and granite minerogenetic series of ore deposits in the Yanshanian epoch,respectively.