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The role of volatiles in the petrogenesis of mafic magmatism in the South East Siberian Traps

South East Siberia

This project aims to unravel the geochronological and geochemical features of the dolerite sills of the Angara Syncline, Siberia (Russia). The dolerite sills are thought to be part of the large permo-triassic Siberian Traps event, which hosts the world class Noril'sk Talnack deposit. However, existing data are not conclusive as to whether the two magmatic events are coheval. 

This work will define the geochemical signature of the dolerite sills of the Angara Syncline, with specific focus on their PGE budget, and will also investigate the role of volatiles in the petrogenesis of these systems. This work will shed light on the overall prospectivity for the region to host Ni-Cu-PGE systems. Furthermore, data generated within the framework of this project will aid in the reconstruction of the geodynamic evolution of the region and in the understanding of the role of volatiles in the generation of mafic-ultramafic magmatism. In this context, this work is aligned within a range of ongoing projects within the CCFS ARC Centre of Excellence.