综合物探方法在江西大面岭钨矿勘查中的应用
An application of integrated geophysical method to exploring the Tungsten deposit in DaMianLing,Jiangxi province
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摘要: 大面岭矿区位于赣中南褶隆之信丰-于都拗褶断束中段,为钨多金属矿远景区。本次勘查利用高精度磁法反映控矿地质体的磁性变化,了解隐伏的控矿岩体、构造和含矿蚀变破碎带的分布,同时利用EH4大地电磁测深清晰的反映了地质体的电性特征,推断出地层展布状态。结合地质资料,综合两种地球物理方法在大面岭矿区取得了明显效果,发现了与成矿相关的磁性及电性异常,两种方法的综合运用能更准确地分析矿体的形态,增加推断解释的准确性,减少投资风险,为后续地质找矿工作提供了参考依据。Abstract: Damianling tungsten deposit located in the middle of Xinfeng-Yudu depression and fold of central-south of Jiangxi province is tungsten-metallic deposits,The method of high accuracy magnetic prospecting indicates the magnetic change of geological body which controlling the tungsten mine and the dist- ribution of hidden rock mass,structures and alteration crush belts in this prospecting,at the same time,EH4 electromagnetic sounding reflects the electrical characteristics of geological body clearly and infers expansion state of the strata.We find magnetic and electric anomaly related to mineralization combining geological data and integrating remarkable results achieved by two geophysical methods.Application of integrating two methods can analyse the form of ore body more accurately,increase the accuracy of inference and interpretation of anomalies,reduce investment risk,and provide more accurate reference for subsequent geological prospecting.
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