Geochemical Anomaly Information Extraction And Evaluation

Prospecting geochemistry is an exploration method to find and evaluate thegeochemical anomaly and prospecting target area by investigating the elementdistribution of elements in geologic bodies. The determination of anomaly threshold isnot only the basic research contents but also the critical issue in explorationgeochemistry.The thesis, on the basis of the data of Geochemical rock survey in Kalagayishafrom East Xinjiang province, presents the comparisons of anomaly thresholdsdetermined by traditional method, fractal concentration-area method, followed bycomparisons of plural anomalies delineated by the factor score method andsuperposed with individual anomalies, so as to get some simple, fast and accurate dataprocessing methods of regional geochemistry, and provide scientific support forreasonable delineation of anomaly and selection of ore exploration perspectives.1269geochemical survey samples are collected in research area, Au、Ag、Cu、Pb、Zn、Mn、Mo、Sb、Bi in each sample are tested,The traditional mathematicsgeology, such as correlation analysis, cluster analysis, principal factor analysis, waseffectively applied to study the geochemical anomalies, and the principal factor scoreanomalies were used by characterizing association anomalies of main metal logaoedicelements. The studied results show as follows: The area of high scores of F1[Cu-Ag]is element represents the association of main mineralized element, the study area hascopper silver polymetallic metallogenic potential.Using different methods to determine element anomaly threshold, then theindividual element anomalies such as anomalous area and strength are compared. Theresults mentioned above and the processes to get element thresholds show that fractalcontent-area method is superior to the traditional method. Without normal inspectionof element content distribution, with the moderate delineated range of anomaly.Compared to two kinds of method to determine the comprehensive anomalies, F1factor score high value zone and traditional methods of HS-1abnormal location,scope and other basic is consistent, which are distributed in the study area innorth-central, indicate that using the factor score method delineated compositeanomalies is feasible, in the study area this anomalies as the target areas, the next step to find the focus of the ore.