BIF型铁矿床全球分布规律与勘探方法

Global distribution of BIF type iron deposits and exploration methods

近些年,全球铁矿石价格的不断波动,对我国铁矿石的贸易影响很大,BIF型铁矿床是全球最重要的铁矿床类型,因此了解BIF型铁矿床的全球分布规律很有必要。本文对国外及我国BIF型铁矿床主要矿区的地质情况及有效的勘探手段进行了总结,希望能够对我国铁矿勘查和铁矿石贸易有所帮助,BIF全球范围内主要分布于早前寒武纪克拉通范围内,受地层控制明显,后期的变质变形会造成铁矿的再富集,对于出露区的BIF型铁矿遥感和地质结合是有效的勘探方法,对于隐伏区综合物探,航磁-高精度磁法-重力-地质的联合勘探较为有效。

In recent years,the continuous fluctuation of the global iron ore price has a great impact on China’s iron ore trade,so it is necessary to understand the global distribution of BIF iron ore deposits.In this paper,the main production areas of BIF of geological conditions and effective exploration methods are summarized,hoping to be helpful to the iron ore trade in China.BIF are mainly distributed in early Precambrian cratonic,controlled by strata,late metamorphic deformation can cause iron ore enrichment again,for the exposed area BIF iron ore of remote sensing and geological combination is an effective means of comprehensive geophysical prospecting,for concealed area,aeromagnetic–high precision magnetic method,gravity–the combination of geological exploration is more effective.