Using Index Overlay, Fuzzy Logic Method and Analytical Hierarchy Process in order to Determine Au and Cu Potential Targets in North Part of Dali Porphyry Deposit
Dali porphyry copper-gold deposit is situated geologically incontact of the Urmieh-Dokhtar magmatic belt and the Sanandaj-Sirjan zone in central of Iran and for the first time this deposit was investigated with using the satellite image processing (TM). In this research, the Northern part of the Dali deposit has been investigated in order to recognize the potential copper and gold-bearing target areas. The survey layers include the lithologic units, alteration, geophysical and geochemical results, tectonics, and copper mineralization. As a accurate decision can have a considerable effect on exploration plans, so in this research efforts have been made to make use of new combination methods including index overlay method, fuzzy logic method, and the analytical hierarchy process. These three methods support and complement each other and have revealed highly potential copper and gold mineralization areas. Among these methods, Analytical hierarchy process is the best method for combining the exploration data in this area. The investigations (for instance field evidences of outcrops, mineralization and also sampling of 7 trenches) carried out in the study area confirm this matter. Based on achieved results, geological perspective in central of studied area is appropriate for continuing mining exploration, especially for subsurface exploration in future.
Geosciences Scientific Quarterly Journal, Volume:21 Issue:83, 2013
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