Abstract: Based on study of minerogenetic background and typical deposit-Pulang porphyry copper deposit, the space relationship between known occurrences and regional geologic gravity, aeromagnetic, geochemical and remote sensing data were analyzed in Shangri-La area. The prospecting criteria of porphyry copper deposit were generalized, according to which geologic variants have been extracted and established. Weighting of evidence based on MRAS was used here to calculate posterior probability of all grid cells of 2 km by 2 km forecasting prospect areas have been divided into three grades of A,B and C. Comparative analysis shows that Pulang super-large porphyry copper deposit, Hongshan skarn-porphyry copper deposit, and some copper polymetal deposits (occurrences) such as Songnuo, Qiansui, Yaza and Laba were all matched with grade A prospect area, which shows that the assessment results can reasonably reflect potentiality of porphyry copper deposit in Shangri-La area, and the results can be used as reference to deploy the further work.

Key words: multi-source information, metallogenic assessment, MRAS, weighting evidence, Shangri-La