Porphyry Cu potential area selection using the combine AHP - TOPSIS methods: a case study in Siahrud area (NW, Iran)

Abstract

In this article, by using AHP-TOPSIS technique we propose a new method for mineral potential mapping that commonly used to other science. AHP and TOPSIS are practical and useful techniques respectively for determining the relative importance of the criteria and ranking - selection of a number of externally determined alternatives through distance measures. AHP method employed to determine the importance weights of evaluation criteria, then TOPSIS technique use for selection and ranking of study area. We used AHP-TOPSIS and GIS to provid potential maps for porphyry copper mineralization on the basis of criteria derived from geological and geochemical controls, and remote sensing data including alterations and faults in Siahrud area in North West Iran. The results demonstrate the acceptable outcomes for copper porphyry exploration.