Study on Multiple Attributes Geochemical Abnormal in Wulonggou Gold Deposit, Qinghai Province
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    Abstract:

    Wulonggou gold deposit locates in north area of the middle East Kunlun Mountains, belonging to a part of precious metal mineral exploration area in the Qaidam Basin surrounding. As a typical of orogenic gold deposits, the ore deposit is strictly controlled by the fault structure. It will be great significance to guide the exploration of the deep and the periphery of the area to further study the geochemical anomalies and its formation mechanism in the metallogenic system. The research is based on the theory of multidimensional anomaly system. By summing up the characteristics of elements enrichment and depletion, we reveal the existence of multiattribute geochemical anomalies. Then using Grant equation to calculate the migration of elements and discuss the direction of element migration. That is the abnormal formation mechanism of each attribute. At last we construct the abnormal structure model in the test area. It shows that a substantial of Na2O、Ba、Sr et al. in the Plagiogranite and Tuffaceous slate related to the gold deposit are taken out, the negative anomaly is significant. The range of negative anomaly is bigger than the positive anomaly range of oreforming elements and associated elements of Au、As、Sb. That enriched the metallogenic indication information. In addition, another important discovery is that the S and its content are closely related to the mineralization of gold deposits. The control effect of initial ore source on gold mineralization in this area is further clarified. The result of this research is a new understanding of the characteristics of the elements in the orogenic gold mineralization system and provide a deep discussion on the metallogenic mechanism and ore prospecting methods of this kind of ore deposits.

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ZHANG Dong), ZHU Lixin), SU Lei), MA Shengming), CHEN Hongqiang), LI Jingyun).2016. Study on Multiple Attributes Geochemical Abnormal in Wulonggou Gold Deposit, Qinghai Province[J]. Acta Geologica Sinica,90(10):2874-2886

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  • Online: October 25,2016
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