The Yilgarn Craton of Western Australia is one of the most metal-endowed geological regions in the world. In order to establish its metallogenic fertility and the nature of the upper mantle beneath the craton, this thesis provides the origin of calc-alkaline and alkaline ultramafic rocks in the Yilgarn Craton through petrography, in-situ and bulk-rock geochemistry and radiogenic isotopes. The results highlight the geodynamic and compositional evolution of the lithospheric mantle from the Late Archean to Neoproterozoic. Finally, this thesis proposes that the Late Archean subduction-related metasomatism may have provided a first-order control on the gold endowment of the Yilgarn Craton.
|Qualification||Doctor of Philosophy|
|Award date||22 Jul 2020|
|Publication status||Unpublished - 2020|