高精度磁法测量在深部隐伏矿体勘查中的应用研究

Application of High Precision Magnetic Survey in Exploration of Deep Concealed Ore Bodies

高精度磁法勘探是最常用的地球物理勘探方法之一,是寻找磁性矿体的一种经济、快速、有效的方法。铁矿资源是钢铁工业的粮食和国民经济建设发展的基础。研究区内已知铁矿为沉积变质型铁矿,该类型铁矿具有强磁性,能引起较强的磁异常。通过对其的研究将对研究区的区域地质填图、断裂构造研究、区域矿产成矿规律研究及成矿预测等方面起到积极的指导作用。本文在研究区已有地球物理资料的基础上,结合区内的地质资料,采用高精度磁测方法对该区进行了野外磁测数据采集、室内磁测数据处理与资料推断解释等,详细地了解了区内的磁场分布特征,并对区内磁异常进行了分类解释,推断了区内的断裂构造和地层分布,圈定了区内磁异常。

The High-precision magnetic survey which is an economical,fast and effective method in looking for magnetic ore body is one of the most commonly used geophysical methods.Iron ore resources are the grain of steel industry and the basis for the development of the national economy.It is known that the iron ore in the study area is of sedimentary metamorphic type,which has strong magnetism and can cause strong magnetic anomalies.Study on it can play a positive guiding role in mapping of regional geological,studying of fracture structure,metallogenic regularity and metallogenic prediction of regional mineral resources in the study area.Based on the existing geophysical data in the study area and combined with the geological data in the area,the field magnetic survey data acquisition,indoor magnetic survey data processing and data inference and interpretation are carried out in this area by using high-precision magnetic survey method.The characteristics of magnetic field distribution in the area are understood in detail,and the magnetic anomalies in the area are classified and interpreted,and the fault structure and stratigraphic distribution in the area are inferred.The magnetic anomalies in the area are delineated.