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青海绿梁山—双口山地区地处柴北缘成矿带,矿产资源丰富,找矿潜力巨大。该区具有典型的荒漠戈壁景观,广泛覆盖风成沙,而风成沙会掩盖水系沉积物中成矿元素的信息,严重影响野外找矿工作。通过划分构造景观区,开展风成沙粒级实验、水系沉积物粒级实验。研究发现,风成沙对绿梁山、双口山2个景观区内水系沉积物中成矿元素的影响程度不同:对前者中元素的影响系数接近1,对Cu、Cr、Ni、Co、Zn等元素的影响微弱,对Au、Ag元素的影响中等;而对后者中元素的影响系数>2,对Ag、Pb、Zn、Cr、Co、Ni等元素的影响较弱,对Au元素的影响极强。在绿梁山景观分区内,优选与Au、Cu等矿种有关的异常,选用0.3~4.0 mm的采样粒级基本合理;优选与Cr、Ni、Co等矿种有关的异常,选用0.3~2.0 mm的采样粒级是可靠的。在双口山景观分区内,圈定与Pb、Zn、Ag等矿种有关的异常,选用0.3~4.0 mm的采样粒级基本合理;圈定与Au矿种有关的异常,选用>0.335 mm的采样粒级可能是合理的。
Green Liangliangshan - Shuangkou Mountain area is located in northern Qaidam metallogenic belt, rich in mineral resources, prospecting potential. The area has a typical desert Gobi landscape, widely covering the wind into the sand, and wind into the sand will cover the water sediment element information, seriously affecting the field of prospecting work. Through the division of the landscape area, wind-blown sand-level experiment and water-system sediment particle-level experiment were carried out. The study found that the effect of aeolian sediment on the mineralization elements in the sediments is different between the two landscape areas of Lvliangshan and Shuangkou Mountain: the influence coefficient of the element to the former is close to 1, and the effect of Cu, Cr, Ni, Co, Zn Pb, Zn, Cr, Co, Ni and other elements are weaker than those of the other elements, while the effect on the elements of Au and Ag is moderate. Strong influence. In the Lvliangshan Landscape Division, the anomalies related to the Au, Cu and other minerals are preferred. The sample size 0.3 ~ 4.0 mm is reasonable. The anomalies related to Cr, Ni, Co and other minerals are preferred. 0.3 ~ 2.0 mm The sampling size is reliable. In the Shuangkou Mountain landscape zoning, delineating the anomalies related to the Pb, Zn, Ag and other minerals, the selection of 0.3 ~ 4.0 mm of the sample size is reasonable; delineation and Au mineral-related abnormalities, the use of sampling particles> 0.335 mm Level may be reasonable.