纳米比亚奥姆博姆博航磁异常特征及找矿意义  

Aeromagetic anomalie charateristics and the ore-prospecting significance in Ombombo,Namibia

作　　者：周锡明[1,2] 张光军[2] 陈超[1] 李爱勇[2] 张明鹏[2] 

机构地区：[1]中国地质大学地球物理与空间信息学院,武汉430074 [2]江苏省有色金属华东地质勘查局814队,江苏镇江212005

出　　处：《地质找矿论丛》2013年第3期468-473,共6页Contributions to Geology and Mineral Resources Research

摘　　要：纳米比亚奥姆博姆博地区ΔT航磁化极异常以正异常为主,反映了朝斯组的分布范围。磁铁矿露头是找矿直接标志,一般分布在磁异常梯度带上。朝斯组高磁异常带是寻找磁铁矿床的优选目标靶区。通过野外地质调查及钻井揭露,在高磁异常带上发现了较好的磁铁矿体,预测该地区具有较大磁铁矿勘探潜力。△T aeromagnetic anomaly of reducting to the pole of Ombombo area of Namibia is dominated by positive anomly that basically reflects distribution extent of Nch formation.. Iron ore outcrops are di rect mark for iron ore prospectring and generally distributed in gradient of the magnetic anomalies zone. High magnetic anomaly zone is the preferred target for magnetite deposit in Nch formation. Through field geological survey and drilling better magnetite ore bodies are discovered and the area is predicted potential for magnetite ore prospecting.

关 键 词：ΔT航磁异常 化极 磁铁矿 找矿标志 纳米比亚 

分 类 号：P631.24[天文地球—地质矿产勘探] P618.41[天文地球—地质学]