Prediction of hydrothermal copper,gold, silver and lead-zinc in northwestern Yunnan using weight of evidence model |
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| Authors: | Jacob Kporfor Chen Jiagou |
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| Institution: | 1. Institute of Geomatics and Information Technology, State Laboratory for Earth Probe &2. Remote Sensing , China University of Geosciences , Wuhan , China |
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| Abstract: | 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. |
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| Keywords: | weight of evidence favorability maps hydrothermal mineral occurrences conditional independence and exploration |
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