| The workspace located in the southern of the southwest sanjiang metallogenic belt, belong to a part of the tethys tectonic belt, located in the orchid- simao basin and Yangtze basin. its structure develops well, and the magmatic activity is frequent.With a strong mineralized alteration, the metallogenic geological conditions are favorable. As the country "western development" and the state council "the decision to strengthen geological work" the implementation of the strategy, which is rich mineral resources in yunnan region has received extensive attention of geological. Application of scientific and effective geochemical exploration data process method to extract the geochemical anomaly information, under the guidance of modern metallogenic prediction theory, supported by GIS platform, through the integrated study of the geological and geochemical characteristics of stream sediments such as screening technology to rapidly and accurately evaluate geochemical prospecting information, comprehensive information ore-prospecting prognosis, obviously for the area of prospecting exploration breakthrough quickly, reduce the risk of prospecting is of great significance.The regional distribution of workplace layer are mainly Maichuqing group of Triassic, Yangjiang group and Huakaizuo group and Bazhulu group of the Jurassic, Jingxing group and Nanxin group of the Cretaceous, the Tertiary and the Quaternary.The fracture tectonic in the area develops well, which is mainly the NW-SE and NE-SW, The early main is the NW-SE Fracture. The latly main is the NE-SW Fracture,The fracture is Reverse fault, tendency to the north east,the angle is between 20 to 88.The distribution of Magmatic rocks of the surveyed area is relatively concentrated, the proportion is not large, but the type of rock is simple; Distributed in the northern spread of mengpuma country, rock mass structure position is in the midst of the "central uplift", which orchid basin show suite output, overall in north west distribution; Total area outcrop about 20 km2.The work is given priority to the 1:50000 stream sediment, which analyzed to 21 elements,includingAg,As,Au,Be,Bi,Cd,Cu,Fe,Hg,La,Li,Mn,Mo,Pb,Sb,Sn,Ti,W,Y,Z n,Zr zinc. The work was selected 305 elements anomaly totally, including the 22 anomalies of Ag,6 anomalies of As,18 anomalies of Au,4 anomalies of Be,12 anomalies of Bi,25 anomalies of Cd,29 anomalies of Cu,4 anomalies of Fe,21 anomalies of Hg,6 anomalies of La,11 anomalies of Li,31 anomalies of Mn,24 anomalies of Mo,19 anomalies of Pb,9 anomalies of Sb,2 anomalies of Sn,4 anomalies of Ti,7 anomalies of W,18 anomalies of Y,12 anomalies of Zn,21 anomalies of Zr. Also we carried out the Combination anomalies for verification.On the basis of the distribution characteristics, correlation analysis and the factor analysis of ore-forming elements, combining of geological conditions, abnormal findings and existing mine sites to verify the information, author considers the workspace has the potential to search for the Cu, Pb,Zn,Au,Ag,Fe and Sn deposit and potential of mineralized bodies.From the perspective of the stream sediment geochemistry, the article discussed the element distribution and distribution characteristics, makes a research on the element type R cluster and factor analysis. And multielement composite anomaly distribution characteristics were analyzed in the article.With the combination of regional geological metallogenic background and anomaly verification results of the inference interpretation, the author makes a prediction on the metallogenic. The research production can guide prospecting in the region and it has important theoretical and practical significance. |
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