Postgraduate Profiles

Jessica Bogossian

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Thesis: Magmatic and metamorphic evolution of the Faina greenstone belt and its implication for the metallogeny of Au-Cu-Fe mineral systems

The project focuses on the characterization of mineralization styles related to the Faina greenstone belt (FGB) and the role of igneous intrusions in its geological setting. The study area is located in the central region of Brazil in the Archean-Paleoproterozoic block, known as the Goiás Massif, which has other four volcano sedimentary sequences, three currently being mined. The Faina belt was mined between 2003 and 2007 by Troy Resources (Sertão Mine, 250,000 Oz Au @ 29g/ton).

Improved understanding of the mineralization processes will be attained through isotopic ratios of U-Pb and Hf-O, integrated with trace element geochemistry of igneous rocks within and surrounding the FGB will be determined in order to constrain the magma source and crustal evolution of the study area. The deposit scale will constrain the present mineralization styles in the FGB (Cascavel, Sertão) by a structural and petrogenetic analysis and related alteration patterns followed by ore dating for posterior correlation.

Why my research is important

The methodology applied in this work can provide worldwide correlations with other Archean/ Paleoproterozoic terrains to provide crustal evolution insights and its relation with mineralization processes.

Funding

May 2015

May 2019

Supervisors