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Application of Fuzzy Logic Method in Integration of Lead and Zinc Exploration Data in GIS Environment for Mapping Potential Zones in Chichakloo Area, East of Takab

Document Type : Original Research Paper

Authors

1 Faculty of Mining, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, Iran.

2 Faculty of Mining, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, Iran

3 Faculty of Geography, University of Tehran, Tehran, Iran.

Abstract

Chichakloo Lead and Zinc ore deposit is one of mineral potential areas, located in Lead and Zinc belt limit of Takab zone and 25 km far from Anguran mine. This ore deposit has been prospected and explored in different scales several times within the last few decades. The last exploration activity over the deposit is the detailed geophysical survey (using resistivity and induced polarization methods) and also geochemical survey for potential mapping of Lead and Zinc zones.  In this paper, after modeling and interpretation of geophysical data and processing and interpretation of geochemical data, we have prepared suitable exploration maps in GIS environment. For this, we have taken a new fuzzy approach for exploration maps using trapezoidal membership function. Then, for integration of exploration fuzzy layers, we have used fuzzy operations. The results of investigation of the final integrated exploration map indicate lead and zinc zones having a fuzzy favorability of greater than 0.5 in southeast of the study area that is obtained from remarkable overlapping of geophysical and geochemical anomalies. The results of drilling boreholes in the area confirm the exploration results obtained in this research work.

Keywords

References
 
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Scientific Quarterly Journal of Geosciences
Volume 21, Issue 82
December 2011
Pages 17-30
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