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Structural Evolution of the Gold-rich Ashanti Belt, SW Ghana

Abstract : The Paleoproterozoic Ashanti Belt hosts numerous world class gold deposits such as the Obuasi deposit (60 million ounces) and the Tarkwa deposit (40 million ounces). Characterising the regional structural and magmatic evolution provides new insight into the geotectonic context forming these deposits. In this work, we propose (1) a new geologic and structural map of the area using field observations and airborne geophysical data, (2) a structural context of early gold mineralisation in the Wassa mine, (3) an interpretation of the magmatic evolution during the Eburnean Orogeny and (4) a three-dimensional model of the Ashanti Belt showing possible litho-structural control of the mineralisations.
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Submitted on : Friday, January 11, 2013 - 11:14:02 AM
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  • HAL Id : tel-00772832, version 1



Stephane Perrouty. Structural Evolution of the Gold-rich Ashanti Belt, SW Ghana. Tectonics. Université Paul Sabatier - Toulouse III, 2012. English. ⟨tel-00772832⟩



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