| The Serirong area is located in the Middle East of the qinghai-tibet plateau,and the administrative division is under the jurisdiction of the xiongxiong county,linzhou county and the nagqu district of,Lasha the Tibet autonomous region.The tectonic location of the study area is located in the south-central part of the eastern section of Gangdise Massif of the tethys tectonic domain,South of the jiali fault,north of the mila mountain fault,it belongs to the east section of the Gangdise arcs fault belt.The multistage composite superposition reconstruction in the study area makes its structure complex and diverse,special development of various and different types of fracture structure,the metallogenic condition is good.The research area belongs to the metallogenic belt of the Gangdise in the regional metallogenic background,and has the geological background of forming cuprum polymetallic ore.Due to the weak geology and mineral investigation in the research area,the investigation of the system geology and mineral resources is not conducted,and the overall research degree is low.Paper through the 1:50000 regional geological survey and1:50000 stream sediment survey in the study area,such as geological prospecting work,to stream sediment Au,Ag,Cu,Pb,Zn,W,Bi,Sn,Mo,Bi,Ba,As,Sb and other 12 kinds of elements As the research object,on each element geochemical characteristics statistics and exception information recognition and extraction,the anomalies delineated and evaluation,and delineating metallogenic perspective area and prospecting target area.Through the analysis of the variation coefficient and concentration coefficient of each element,it can be seen that the metallogenic possibility of Au,Pb,Cu,Zn and Sb is relatively high.After correlation analysis and cluster analysis of the zone elements,the Au-As-Sb,Pb-Cu-Zn-Ag,W-Sn-Bi-Mo three groups of elements was determined.After the traditional iterative method is used to determine the threshold,using one or two times and four times the threshold could be divided into outer,middle and inner abnormal level 3 concentration zoning,based on threshold and the level 3 concentration points make single element anomalies.On the basis of single element anomaly,combined with the geological background of the study area,16 comprehensive anomalies have been delineated,among them,there are 8 Class A abnormalities and 8 Class B abnormalities,these anomaly overlaping with the known mineralization point are good.The comprehensive anomalies of six sites including Rongduobei(HS-2-B3),Xiabusongdong(HS-9-A1),Yunonglang(HS-10-A2),Halongduo,(HS-11-A2)Pilongku(HS-12-A2)and Yizhanan(HS-16-A1)were analyzed and evaluated.To provide favorable prospecting information for further prospecting work,on the basis of the comprehensive anomalies,in combination with geological background in the study area,the three grade three ? metallogenic prospective areas and 16 prospecting target areas are delineated,of A class target area two,class B target area six,class C target area eight,among which,no.A1,B2 B4,B5,B6,A2,and so on,six key prospecting target areas in the process of anomalies,discovered ore point,has great prospecting potential.Through research,it has been found that W,Cu,Pb,Zn and Au are highly concentrated in the major geochemical anomalies.The prospecting work in the region should focus on hydrothermal lead deposits,hydrothermal filling and replacement gold polymetals.Mineral,porphyry-hydrothermal mixed lead-polymetallic ore,and hot water deposition-hydrothermal superimposed copper polymetallic ore deposits. |
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