河南秧城一带金矿预查区土壤地球化学测量样品采样层位、加工粒级对比研究

Comparative study on sampling level and processing grain size of soil samples in geochemical survey in the gold pre-examination area of Yangcheng district,Henan

桐柏山-大别山地区为湿润半湿润中低山景观区,勘查地球化学找矿方法在该区找矿工作中起到了重要作用。通过对大别山北坡秧城一带金矿预查区开展土壤测量样品采样层位、加工粒级对比试验,优选出适合该区域的加工粒级和层位为-10目、B^C层;采用该方法在研究区开展的1∶1万土壤测量圈出清晰的元素地球化学异常,为地质工作提供地球化学找矿靶位。经验证,此方法行之有效,说明适应该地区的景观条件,可在同类景观区借鉴使用。

The Tongbaishan-Dabieshan area is a wet semi-humid medium-low mountain landscape area,and the geochemical exploration method plays an important role in the prospecting work in the area.According to the comparative test of sampling level and processing grain size of soil samples in geochemical survey in the gold pre-examination area in Yangcheng district,the processing grain size and suitable sampling levels are-10 mesh and B to C layers in the area.The clear geochemical element anomalies are circled out in the 1∶10,000 soil geochemical survey carried out in the research area.It is provided the geochemical prospecting targets for geological work.After verification,this method is effective.It is indicated that the method is suitable to the landscape condition of the area and can be used for reference in similar landscape areas.