Porphyry copper potential mapping using the weights of evidence model in a GIS,northern Shahr e Babak,Iran |
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| Authors: | M H Tangestani F Moore |
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| Institution: | Department of Geology, College of Sciences, Shiraz University, Shiraz, 71454, Iran |
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| Abstract: | A variety of spatial geological data were compiled, evaluated and integrated to produce a potential map for porphyry copper deposits in the northern Shahr e Babak, Iran, within a total area of approximately 408 km2. Remotely sensed data including LANDSAT Thematic Mapper were used to create the hydrothermal alteration haloes around intrusive bodies. Geological data, such as exposed granitic to intermediate intrusions, and part of the lineaments were extracted from available geological maps. Aeromagnetic data were also used to extract magnetic anomalies and extra lineaments. The Conditional Independence test was carried out on five binary maps representing diagnostic deposit recognition criteria, and four of them were then integrated using a weights of evidence model. The procedure generated a posterior probability map identifying favourable areas for porphyry copper deposits. The final map highlights the most important known copper deposits in high favourability domains. Some new target areas are also located in the favourability map and warrant further investigation. |
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| Keywords: | conceptual models geographic information systems Iran mineral exploration numerical models porphyry copper weights of evidence |
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