青海省玉树地区高精度航磁调查与应用研究  

Application study on high precision aero magnetic survey to Yushu area of Qinghai province

作　　者：王牧 金世杰 要悦稳 习肖伟 WANG Mu;JIN Shijie;YAO Yuewen;XI Xiaowei(Geophysical Exploration Academy of China Metallurgical Geology Bureau, Baoding 071051, Hebei, China)

机构地区：[1]中国冶金地质总局地球物理勘查院,河北保定071051

出　　处：《地质找矿论丛》2021年第2期202-209,共8页Contributions to Geology and Mineral Resources Research

摘　　要：青海玉树地区位于我国重要的西南“三江”成矿带,具有高海拔、切割剧烈等特点,而高精度航磁调查是一种精度高、见效快、成本低的方法技术手段。在该区运用直升机长杆硬架技术并采取随地形缓起伏的方法,获取了高质量的原始数据。在高精度航磁图上,磁异常信息十分丰富,通过详细的物性资料分析和严谨的异常解释工作,摸清了区域磁场基本特征,推断了52条航磁反映的断裂,通过分析航磁异常找矿效果,新发现了3处与铁矿相关的异常。根据该区完成的航磁调查应用效果看,笔者认为在青海玉树地区开展高精度航磁测量的方法是行之有效的。Yushu area is located in the important San Jiang ore belt of the Northwest China characterized by high altitude and deep dissection.The technique of long iron frame equipped with helicopter and flying with relief is applied to high precision aero magnetic survey in the Yushu area.High quality raw data are obtained and abundant magnetic anomalies are drawn on the magnetic map.Physical property is detailedly analyzed and anomalies rigorously interpreted and is made clear of characteristics of the regional magnetic field.52 faults are inferred.Based on analyzing results of aeromagnetic anomaly-based ore prospecting three iron ore-related anomalies ate put forward.The application shows that such survey is effective in such area.

关 键 词：玉树地区 高精度航磁调查 航磁异常查证 断裂构造 磁铁矿 青海省 

分 类 号：P631.222[天文地球—地质矿产勘探] P618.31[天文地球—地质学]