云南省某矿区磁异常特征分析

Characteristics of magnetic anomalies in a mining area of Yunnan Province

磁法勘探包括地面、航空、海洋磁法勘探及井中磁测等,是最常用的地球物理勘探方法之一,主要用于寻找铁、铅锌、铜多金属等有关矿产等。本文主要介绍高精度磁测在云南省某地航磁异常上的查证。通过地面高精度磁测数据处理,结合磁异常区的地球物理特征及其他地质特征,进一步圈定了2个大的异常范围,推断出成矿有利地段,再结合典型剖面的反演推断,为钻探工程验证布置提供充分的地球物理依据。

Magnetic prospecting, including surface, aviation, marine magnetic prospecting and borehole magnetic survey,is one of the most commonly used geophysical prospecting methods, mainly used to find iron, lead, zinc, copper and other related minerals. This paper mainly introduces the verification of aeromagnetic anomaly in Yunnan province by highprecision magnetic survey. Based on the data processing of high-precision magnetic survey on the ground and the geophysical and other geological characteristics of the magnetic anomaly area, two large anomaly areas are further delineated, and the favorable metallogenic areas are inferred. Combined with the inversion inference of typical sections, sufficient geophysical basis is provided for the verification arrangement of drilling engineering.