综合物探方法在阿里地区矿调中的应用

The Application of Comprehensive Geophysical Method in the Mineral Geological Survey of Ali Region

阿里地区位于青藏高原西部,气候恶劣,被誉为“世界第三极”。在该区域进行矿产地质调查工作时,前期物探资料的收集显得尤为重要。在初步了解工作区的区域地质背景及航磁异常情况下,首先采用地面高精度磁法测量大致确定矿化岩层及分布;再选择重点区域进行激电剖面测量和测深,了解浅部矿化体特征与激电异常的对应关系;最后进行AMT测量,了解深部地层结构或构造。物探工作由面及线,由浅入深,由已知到未知,循序渐进,提高了工作效率,为今后类似矿区工作提供了经验。

Ali Region is located in the Western qinghai-tibet Plateau,the climate is harsh,known as the"third pole of the world.".It is very important to collect the early geophysical prospecting data for the Geological Survey of mineral resources in this area.After a preliminary understanding of the regional geological background and aeromagnetic anomalies in the working area,the mineralized strata and their distribution are roughly determined by high-precision magnetic survey on the ground,and the IP profile survey and sounding are carried out in the selected key areas,finally,AMT measurement is carried out to understand the deep stratum structure or structure.The geophysical prospecting work from surface to line,from shallow to deep,from known to unknown,has improved the working efficiency step by step,and has provided the experience for the similar mining area work in the future.