高精度磁测在多金属矿整装勘查区成矿规律研究中的应用

Application of high precision magnetic measurement in the study of metallogenic regularity of multi-metallic ore deposit exploration area

以最新成矿理论为指导,在多金属矿整装勘查区开展1:5万地面高精度磁法测量,为进一步地层、构造划分及矿产勘查工作提供有力地球物理依据.在充分收集并研究前人成果资料的基础上,对磁测数据进行化极、延拓等处理,并对采集的物性标本磁化率及剩磁进行分类统计,查明工作区磁场分布特征,圈定局部磁异常,研究磁异常与中酸性岩体、地质构造、成矿条件等之间的关系,从而圈定隐伏-半隐伏中酸岩体13处,划分构造26条,划定成矿有利靶区2处.对部分重点高磁异常布置1:1万的综合剖面测量,利用二度半人机交互反演,拟出了异常体埋深和形态.后经地质矿产检查证实推测结果与实际情况相吻合,因此证明高精度磁测在该区对构造相关的多金属矿成矿规律的研究有良好的效果.

We used the lastest mineralization theory as a guide to complete the 1:50000 ground high-precision magnetic measurement in multi-metallic ore deposit exploration area.It can be used in mineral exploration and provide clues to divide the strata and the structure.Based on the systematically collecting and further studying on the previous geological data,we use the magnetic data processed with methods of reduction to the pole and upward continuation.Besids that,the specimen collected in the survey were identified and the magnetic susceptibility and residual magnetization data about the specimen were statistically analyzed.By identifying the distribution characteristics of the field,delineating magnetic anomaly in working area and studying the relationship between magnetic anomaly and medium acid rock mass,we delineate the thirteen Concealed-half concealed acid rock mass,divide the txenty-six structure and put forward the two prospecting target area.We used the 1:10000 comprehensive profile measurement in the area with special magnetic anomaly.We deduce the depth and morphology of the anomalous body by inversing the data.The conjectures consistent with actual result on the basis of relevant geological data,the high precision magnetic measurement has a good effect on the study of the metallogenic regularity of multi-metallic ore deposit exploration area.