小秦岭金矿田航磁异常特征及找矿潜力分析

Analysis of Aeromagnetic Anomaly Characteristics and Exploration Potential in Xiaoqinling Gold Field

小秦岭作为我国第二大金矿田,随着浅部资源的消耗殆尽,探矿工作进入攻深找盲阶段。虽然开采历史悠久,但中深部勘查工作程度仍较低。笔者基于2020年小秦岭地区开展的1∶2.5万高精度航磁测量工作,在对航磁测量资料分析处理、数据反演和调查验证的基础上,结合区域成矿地质条件,分析总结了(隐伏)岩体、构造的航磁异常特征,建立了航磁异常推断解译标志,并对构造、隐伏岩体进行推断解译,为该区成矿预测及深部矿产资源勘查提供了地球物理依据。

As the second largest gold mine in China,the Xiaoqinling Mountains have entered a blind stage of exploration due to the depletion of shallow resources.Although the mining history is long and the level of shallow work is high,the level of deep work is relatively low.Based on the 1:25000 high-precision aeromagnetic survey conducted in the Xiaoqinling area of Tongguan,Shaanxi in 2019,the author analyzed and processed the aeromagnetic survey data,conducted data inversion and investigation verification,combined with the regional ore-forming geological conditions,analyzed and summarized the aeromagnetic anomaly characteristics of the regional magnetic field,(hidden)rock mass,and structure,established inference and interpretation criteria,and inferred and interpreted the structure and hidden rock mass,providing aeromagnetic basis for deep ore-forming prediction and mineral resource exploration and development in the area.