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近年来我们对石英脉型金矿进行了小面积和剖面性次生晕试验工作,发现砷在土壤中形成之分散晕与含金石英脉吻合,得到较满意的地质效果.本区为侵蚀中山区,呈壮年期地形,一般坡度10°-30°,大陆性气候,温差变化较大,水量尚充沛,原岩多被疏松沉积物所覆盖,疏松层以残坡积物为主,复土厚为0.5-2米,有些地段可达3米.土壤自然层位:A层为黑色松软的腐植土,一般厚10-
In recent years, we conducted a small area and cross-section secondary halo test on quartz vein type gold deposits, and found that the dispersion halo formed by arsenic in the soil is consistent with the gold-bearing quartz vein, which gives more satisfactory geological results. The area has a mature terrain with a typical gradient of 10 ° -30 °. In the continental climate, the temperature difference varies greatly and the amount of water is plentiful. Most of the original rock is covered by loose sediments, while the loose layer is dominated by residual slope sediments. Thick 0.5-2 meters, some lots up to 3 meters. Soil natural horizon: A layer of black soft humus soil, the general thickness of 10-