Prediction of Hydrothermal Copper, Gold, Silver and Lead-Zinc in Northwestern Yunnan Using Weight of Evidence Model

摘要

This paper discusses the application of the model in predicting for hydrothermal Cu, Ag, Au and Pb-Zn occurrences in northwestern Yunnan. Geochemical, lineament and lithology data were the selected recognition criteria. The mentioned criteria varied against 75 known hydrothermal occurrences; the geochemical data had a weight of (W~+ = 1.2097, W~- = —0.7481) being the maximum among the three and the rest lineament and lithology have (W~+ = 0.7424, W~- = -0.4496), (W~+ = 0.3787, W~- = -0.6243) respectively. The application was successful since the predicted results covers about 70% of the known deposits and predicted unknown areas.