Researches in Earth Sciences

Researches in Earth Sciences

Implementation of Fuzzy-AHP and Fuzzy-GAMMA approaches for discovering the prospectivity areas of Au mineralization in Takhte-Soleyman district

Document Type : علمی -پژوهشی

Authors
Reza Ghezelbash 1
Abbas Maghsoudi 2
Mehrdad Daviran 3
1 Ph.D Student in Exploration, Faculty of Mining and Metallurgical Engineering, Amirkabir University of Technology
2 Assistant Professor, Faculty of Mining and Metallurgical Engineering, Amirkabir University of Technology
3 MS.c Student in Exploration, School of Mining, Petroleum and Geophysics Engineering, Shahrood University of Technology
10.52547/esrj.10.1.143
Abstract
Fuzzy analytical hierarchy process (Fuzzy-AHP) technique as a knowledge-driven approach relies on the geologist’s input to weight the importance of each evidence layer is applied for prospectivity modeling of Au mineralization within the Takhte-soleyman district. Firstly, in current study, all of the criteria and sub-criteria which are gained from exploratory data (geochemistry, remote sensing, geology and tectonic) are weighted by using AHP and thereafter are transformed into [0-1] range based on the fuzzy logic. All fuzzified layers according to the calculated weights were synthesized and prospectivity modeling of Au mineralization based on the Fuzzy-AHP technique was generated. In this study, it was used another fuzzy method based on the fuzzy operators (OR and GAMMA) that called “Fuzzy-GAMMA” to generate the map of promising areas of Au mineralization in the study area. Finally, in order to evaluate the ability of the applied methods in delineating reliable promising areas, locations of Au occurrences in the study area were used. Consequently, the results demonstrate the more acceptable outcomes for Fuzzy-AHP model by comparison with Fuzzy-GAMMA model.
Keywords
MPM
Fuzzy-AHP
Fuzzy-GAMMA
Synthesis
Au mineralization
Takhte-soleyman