Twelve elements such as Au,Ag,Cu,Pb,Zn,As,Sb,Bi,W,Mo,Sn,Hg are analyzed for 2776 sedimentary samples of 1∶50 000 stream system in Tuoponao area of 630.29 km2.The geochemical charac-teristics of the four geoproton areas are compared and analyzed,and the rrgularity of regional element enrich-ment and depletion is found out.The factor analysis method is adopted to systematically study the factor principal components of sub-area(J3t)of volcanic rock and intrusive rock(ηγ∈3O1,γπ ∈ 3 O1)of Tamu-langou Formation with characteristic values greater than 1.The study result indicates that the Bao14Hs-30 a-nomaly in the volcanic rock sub-area is caused by gold-lead-zinc mineralization,and a gold lead zinc mineral spot has been discovered in this sub-area.The Bao-14Hs-4 anomaly in the intrusive rock zone is caused by tin mineralization.On this basis,the prospecting indicator for gold and lead-zinc mineralization in the region is summarized,and one tin mineralization prospect area is delineated within the region.
关键词
水系沉积物测量/元素异常特征/因子分析/找矿预测/黑龙江椭坡垴地区
Key words
stream sedimentary survey/element anomaly characteristics/factor analysis/prospecting predic-tion/Tuoponao area in Heilongjiang
维普
万方数据