Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

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

Document Type : Original Research Paper

Authors
S. Yousefifar 1
A. Khakzad 1
H. Asadi Harooni 2
M. R. Jafari 3
M. Vosoughi Abedin 1
1 Department of Geology, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 Mining Department, Isfahan University of Technology, Isfahan, Iran
3 Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran
10.22071/gsj.2012.54516
Abstract
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.
Keywords
Porphyry
Dali
Index overlay Method
Fuzzy logic method
Analytical Hierarchy Process
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Scientific Quarterly Journal of Geosciences
Volume 21, Issue 83
Autumn 2012
Pages 49-58