次生晕和分散流化探方法是当前用于普查找矿工作中最主要的化探方法,历来所完成的化探工作量中,这两种方法占有的比重高达百分之九十以上。这两种方法主要基于系统研究土壤及水系沉积物中微迹金属的分 Secondary halo and dispersive fluid method are the most important geochemical methods currently used for prospecting work in census. Of the total geochemical exploration work done in the past, these two methods occupy as much as 90% of the total geochemical exploration work. Both of these methods are based on a systematic study of the fraction of trace metals in soil and sediments