GIS-based prospectivity mapping for orogenic gold: a case study from the Andorinhas region, Brasil

Ford, A., and Miller, J.M. (2012) GIS-based prospectivity mapping for orogenic gold: a case study from the Andorinhas region, Brasil. In: Proceedings of the International Conference on Geospatial Technologies and Applications, pp. 650-652. From: Geomatrix’12: International Conference on Geospatial Technologies and Applications, 26-29 February 2012, Mumbai, India.

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Abstract

This study involves the generation of new geological and structural maps through analysis and interpretation from high resolution geophysical and remote sensing datasets over the Andorinhas region, located in the Rio Maria Granite-Greenstone Belt in the southern part of the Carajás Mineral Province, Brasil. Using available aeromagnetic, gamma-ray spectrometer data and Landsat imagery, revised geological and structural maps were generated for the area using GIS-based methodologies. The structural history was then reviewed based on field-based observations to give a timing to the structures relative to the mineralization in the region. Exploration targets for orogenic gold were then derived by integrating these datasets using the fuzzy logic technique for mineral prospectivity analysis. These targets were then followed up with higher resolution field mapping and geochemical sampling.

Item ID: 40043
Item Type: Conference Item (Abstract / Summary)
Keywords: Brasil, fuzzy Logic, GIS, orogenic gold, prospectivity
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Date Deposited: 03 Sep 2015 00:14
FoR Codes: 04 EARTH SCIENCES > 0403 Geology > 040399 Geology not elsewhere classified @ 100%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8401 Mineral Exploration > 840105 Precious (Noble) Metal Ore Exploration @ 100%
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