物化探技术在青海天峻航磁查证中的应用  

The Application of Geophysical and Geochemical Technology to Aeromagnetic Verification in Tianjun in Qinghai Province

作　　者：姜鹏[1] 龚育龄[1] 王笠洁 邱松[1] Jiang Peng Gong Yuling Wang Lijie Qiu Song(School of Nuclear Engineering and Geophysics, East China University of Technology, Nanchang Jiangxi 330013, China)

机构地区：[1]东华理工大学核工程与地球物理学院,江西南昌330013

出　　处：《工程地球物理学报》2016年第6期752-757,共6页Chinese Journal of Engineering Geophysics

基　　金：国家自然科学基金项目(编号:41164003;41404057;41174107);放射性地质与勘探技术国防重点学科实验室开发基金项目(编号:RGET1308)

摘　　要：在大量收集青海天峻1∶50 000航磁测量区已知地质、矿产资料和以往物化探工作成果资料的基础上,对测区内五个典型的航磁异常带进行地面查证。通过对异常进行初步甄别分类之后,以编号青C-2012-117,即航磁异常Ⅰ区的地面查证工作为例,采用1∶10 000高精度磁法剖面测量、1∶10 000岩石剖面测量方法进行航磁异常三级查证,分析磁异常形成的地质原因,对不同性质的航磁异常做出定性判别,进而对区内成矿地质背景和区域成矿条件进行初步分析。在航磁异常查证中取得了很好的找矿效果。On the basis of a large number of known geological and mineral data and past physical and chemical exploration results in the 1∶50 000 Tianjun Qinghai aeromagnetic measurement area,ground-verification will be used for the five typical aeromagnetic anomaly area.In this paper,after the initial screening and classification for anomaly,taking the number Qing C-2012-117（the aeromagnetic anomaly areaⅠ）ground-verification as an example,it uses 1∶10 000high-precision magnetic profiling and 1∶10 000 rock cross-section measurement for the three-grades verification of aeromagnetic anomalies and analyzes geological reasons for the formation of magnetic anomalies.It gives qualitative discrimination for the aeromagnetic anomalies of different properties.and then analyzes the metallogenic geological background and regional metallogenic conditions in the area.Good prospecting results have been achieved in the aeromagnetic verification.

关 键 词：航磁异常查证 高精度磁测 化探异常 

分 类 号：P631.2[天文地球—地质矿产勘探]