Geochemical Characteristics And Prospective Prognosis Of The Yalu River Metallogenic Belt Based On Stream Sediment Survey

The Yalu River metallogenic belt is located in the Liaodong rift in the Yalu River, controlled by the main fault and multiple faults, gold polymetallic ore resources are abundant, is one of the important metallogenic belt in China. The study in the system to collect sorting on the basis of previous data, 1:50000 stream sediment survey work was carried out, to advanced geological mineralization theory as a guide, the use of comprehensive methods of geology, geochemistry, geophysics means, in polymetallic mineral and metallogenic plastid characteristics to identify, find new mineralization clues and mineralization points, analysis of mineral formation geological background and metallogenic geological conditions, in order to geochemical and geophysical anomaly interpretation and study of metallogenic regularity and find ore delineation of target areas to provide data of geology and mineral resources.The spatial distribution characteristics of geochemical field in the study area show that the ore-forming elements have obvious metallogenic specialization in the old strata, and different elements are different in the different times of intrusive rocks. The mineralization in the area is closely related to the magmatic hydrothermal activity, which exhibits complex diversity and multi period superposition. Factor analysis showed that Au, B and other elements of mineralization is more than a single, basically formed by a mineralization period.Area were delineated various elements and 1387 anomalies, 23 integrated anomaly. Closely related to spatial distribution of geochemical anomalies and regional tectonic and geological body, most abnormal elements were complex, a variety of ore-forming elements closely associated, has the characteristics of multi period superimposed hydrothermal activity. Various types of abnormal distribution have both similarities and differences between.Through the summary of the typical deposits in the study area geological characteristics and metallogenic regularity of that area according to the main minerals of Au ore-forming geological features are classified as and late Yanshanian intermediate acidic magmatic rocks are related to copper, iron, lead, zinc, gold and molybdenum metallogenic series, and three deposit types: contact metasomatic copper, zinc, iron, copper molybdenum(Pb) deposits, porphyry Au(Pb Zn) deposits and magmatic hydrothermal fluid type gold and silver copper, lead and zinc deposit. In the area of four mineral prediction type: Wanbao intrusive rock type copper molybdenum deposit, Wulong magmatic hydrothermal type gold deposit, Yangmugan type volcanic sedimentary metamorphic type boron ore and Yanglin type volcanic sedimentary metamorphic type iron ore are identified.In the study area is circled three metallogenic area: Hushan-Yongdian gold polymetallic into far area, Kuandian boron Eastern, iron and gold metallogenic far scenic spots and Budayuan-Wanbao copper molybdenum zinc gold metallogenic area. In each metallogenic prospect area and circle the multiple best metallogenic prediction area. Through the main anomaly inspection summary and comprehensive considerations, and to determine the three prospecting target areas: Kuandian Gongjia gou iron molybdenum polymetallic ore prospecting target area, Kuandian erbaiqianling copper silver polymetallic find ore target area and Kuandian Sunjiabaozi boron and gold polymetallic ore prospecting target area.