从磁异常探讨德勒诺尔铁矿构造对矿体的控制作用

DISCUSSING THE CONTROL OF STRUCTURES TO ORE BODIES IN DELENUOER IRON DEPOSIT FROM GEOMAGNETIC ANOMALY

德勒诺尔铁矿赋矿地层形成时代为中元古代,其后经历过多期多次构造叠加作用,变形变质作用较为复杂。成矿期后的断裂、褶皱、节理等构造十分发育,受褶皱和断裂构造的影响,矿体的空间形态和产状极其复杂,给钻探工程部署造成很大困难。本文在地面磁测数据处理、转换及构造增强的基础上,对其所蕴含的深部构造信息进行了提取和解释,初步建立起了矿区的基本构造格架,揭示了不同期次、不同方向、不同性质的构造对矿体的控制作用,较好地解决了矿体形态复杂的找矿难题,有效提高了钻探工程的见矿率。

The formation age of Delenuoer iron mine ore-bearing strata is mesoproterozoic. Subsequently, it experiences many stages and times tectonic superimposition activities. Deformation and metamorphism is relatively complex. After metallogenic period, the fault, fold and joint are very development. By the influence of the fold and fracture structure, ore spatial form and occurrence is extremely complex, which causes great difficulty for the deployment of drilling engineering. On the basis of the ground magnetic survey data of potential field conversion and structural enhancement processing, this paper takes the information extraction and interpretation of the deep structure, initially establishes a mining area＇s basic tectonic framework, reveals different periods, different directions and different natures of structure to control the ore body, better solves a difficult problem that complex ore body shape is disadvantages of prospecting, and effectively improve ore occurrence rate of the drilling engineering.