航空磁法在澳大利亚北领地Tennant Creek金矿田勘探中的应用Application of Airborne Magnetic Prospecting in Tennant Creek Gold Orefield,Northern Territory,Australia
杨恺,代凤红,李华,陈旭
摘要(Abstract)：
Tennant Creek金矿田矿床类型属铁氧化物型铜金矿(IOCG),含矿部位均呈现高的航磁异常。本区矿体地表露头以褐铁矿为主,深部以磁铁矿为主,高品位的金通常位于铁矿体底部,呈细脉-浸染状产出。为了进一步寻找IOCG型矿床,在Tennant Creek金矿田内28 904区块开展了大比例尺航空磁法工作,综合分析航磁-地层特征,圈出航磁异常17处。其中2处异常经地表查证,发现了大型褐铁矿化带,并有Au异常显示。下一步若对其它异常进行钻探验证,证明其深部存在IOGC型金矿,则说明大比例尺航空磁法测量在Tennant Creek金矿田是有效的找矿方法。
关键词(KeyWords)： Tennant Creek;IOCG型矿床;航空磁法;磁异常
基金项目(Foundation):
作者(Author): 杨恺,代凤红,李华,陈旭
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