A hybrid approach to model the dykes in Sungun porphyry copper deposit using Dempster–Shafer theory

摘要: Modeling geological units such as dykes is a powerful tool in mineral exploration studies. The most significant issue modeling of uncertainty the studies identification domains that consist zones with exploratory factor located area under study. sequential indicator simulation (SIS) algorithm has ability to model lithological facies. Although two-point geostatistical approaches are simple, they have some substantial drawbacks. For instance, do not take into account complex and nonlinear continuities like swarm dyke. Therefore, if study units, it necessary improve SIS considering spatial patterns structures. pattern recognition method an effective approach can algorithm. It based on informative contain connectivity This paper proposes hybrid (PR-SIS) for presence several To perform approach, methods were used combined form. this end, results two by Dempster–Shafer theory (DST) approach. main purpose investigate impact proposed Sungun porphyry copper deposit (Iran). evidences been including These then applied using DST obtain final accuracy model. Final shows continuity each location optimal check respect map. overall (OA) kappa index (KI) different dimensions search windows showed provide better accuracy. In regard, values OA KI 0.889 0.792 0.901 0.805, well 0.982 0.891 method, 2.5 × 2.5 window, DST, respectively.