The study aims to understand the evolution of the Earth’s oceanic and atmospheric composition during the the Archean and Paleoproterozoic. Most importantly for the Ni-PGE Theme, the project will try evaluate the links between the evolution of the sulphur cycle and the formation of important Archean submarine ore deposits, such as the komatiite-hosted nickel sulphide systems, and other intrusion-related systems.The primary goal of this project is to understand the nature of different Archean sulphur reservoirs in terms of their multiple isotopic signature. This knowledge would be of primary significance for the application of multiple sulphur isotopes to ore genetic models for a wide range of magmatic systems. The data will be also used to define the nature of the first life in the early Archean and links between the early evolution of life and the rise of atmospheric oxygen in the Neoarchean. as part of this project, developmental work on the IMS1280 ion probe is currently being undertaken.