Title of article :
Application of a hybrid method combining multilevel fuzzy comprehensive evaluation with asymmetric fuzzy relation analysis to mapping prospectivity
Author/Authors :
Zuo، نويسنده , , Renguang and Cheng، نويسنده , , Qiuming and Agterberg، نويسنده , , Frederik P.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
8
From page :
101
To page :
108
Abstract :
A case application of a hybrid method combining multilevel fuzzy comprehensive evaluation with asymmetric fuzzy relation analysis is demonstrated to map porphyry-copper prospectivity in the Gangdese district, Tibet, western China. Two-level binary geoscience variables including favorable rocks, intrusive rocks, faults and geochemical anomalies, are identified based on porphyry-copper mineral deposit model and ranked using asymmetric fuzzy relation analysis. The prospective target areas are identified by fuzzy membership values greater than 0.82 and corresponding uncertainty less than 0.36. The target areas occupy only 7.0% of the study area but contain 52.4% of the total number of known deposits. The prospectivity map illustrates that the targets are not only directly associated with the known deposits in the central part of the study area, but also with E–W and N–E oriented faults in the northern part of the study area. The targets can be used to guide further exploration for undiscovered porphyry copper in Gangdese district.
Keywords :
uncertainty , porphyry copper , Mineral potential mapping , Tibet , Multilevel fuzzy comprehensive evaluation , Asymmetric fuzzy relation analysis
Journal title :
Ore Geology Reviews
Serial Year :
2009
Journal title :
Ore Geology Reviews
Record number :
2283361
Link To Document :
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