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甘肃北山地形低缓地区利用水系沉积物测量方法找矿的效果并不十分明显。项目组在北山开展1∶5万矿产远景调查时,针对地表矿化对水系弱异常开展了1∶1万岩屑测量的查证工作,在该景观区开展岩屑地球化学测量时选择C层-4~+20目粒级的样品可以有效地排除风成砂的干扰,突出成矿及指示元素的地球化学异常特征,提高找矿效果,通过对圈出岩屑异常的查证工作发现了任家山金矿,并对岩屑测量在甘肃北山景观区地球化学水系弱异常找矿中的应用进行探讨。
The effect of prospecting for sediments in the low terrain of Beishan Gansu terrain by means of water sediment measurement is not very obvious. During a 1: 50000 prospect survey in Beishan, the project team verified the 1: 10000 rock cuttings for the weakness of surface water mineralization in surface mineralization. When conducting the cuttings geochemical survey in this area, Samples of 4 ~ +20 mesh size can effectively eliminate the interference of aeolian sand, highlighting the geochemical anomaly characteristics of mineralization and indicator elements, and improve the prospecting effect. Through the verification work of ring debris anomaly, Gold mine, and discusses the application of cuttings measurement in the weak anomaly prospecting of geochemical water system in Beishan landscape area of Gansu Province.