The Lenglongling area,located in the eastern segment of the North Qilian metallogenic belt,Qinghai Province, is a favorable area for forming marine volcanic-associated massive sulfide deposits and magmatic hydrothermal deposits, which has a good prospecting potential. The previous 1∶200 000 regional geochemical anomalies lacked further detailed analysis.In this paper, based on the results of the 1∶50 000 stream sediment survey,the geochemical characteristics of 17 elements, such as Au, Cu, Pb, Zn, etc., were preliminarily analyzed. The abundance value of elements such as Ag,Pb,Zn,W,Sn,Bi,Mo,Ba,Cd in the Lenglongling area is much higher than the average background abundance of Qinghai Province and Qilian area;The distribution characteristics of elements show all elements in the Yingou Group are enriched of different degrees except for Hg,La,Ce.The Caledonian intrusive rocks have a higher content of Ag, Cu, Pb, Zn, W, Au,Sn,Bi and the Ba, La, Ce enrichment of the Hercynian syenite is more significant,respectively. R type cluster analysis and factor analysis show that Cu-Pb-Ag-Mo-Ba-La-Ce are the major metallogenic element assemblage in the region and Au had the potential of independent mineralization. The geochemical parameters including the enrichment and discrete characteristics indicate that the survey area might be a prospective area for Au,Ag,Cu,Pb,Zn,Mo,La and Ce. This study has defined eight integrated anomalies.By comparing geological and geochemical characteristics of Langlike copper deposit and Qingfenling gold deposit,in combination with the metallogenic geologic background, the characteristics and verifying results of 1∶50 000 geochemical anomalies, the authors delineated two metallogenic prospective areas,namely Ganshahe and Sandaolujuan-Daoyanghe.
