Professor Brenan:
Professor Brenan's research is broadly aimed at understanding the origin of the distribution of elements in the solar system, with emphasis on the Earth and terrestrial planets. This work is largely focused on experimental investigation of interphase partitioning, phase stability and the kinetics of element exchange. Current and near-future research is to develop experimental and analytical techniques to better assess the role of magmatic processes in controlling the behaviour of the highly siderophile elements: Re, Au and the Platinum Group Elements (PGEs; Os, Ir, Ru, Rh, Pt, Pd). He also has a longstanding interest in the nature of geochemical recycling at convergent margins, and most recently have become involved in research on the record of early Earth processes. |
Professor Fedortchouk:
Professor Fedortchouk's research focuses on diamonds and kimberlites, the most deep-seated magmas that form primary deposits of diamonds. The origin of kimberlites is linked to processes in the deep mantle. Kimberlites transport diamonds from the Earths mantle to the surface and partially dissolve them during the ascent. The dissolution impacts the commercial value of diamonds. Volatile-rich nature of kimberlites plays an important role in diamond dissolution. Professor Fedortchouk combines experimental studies of diamond dissolution with detailed observations of natural diamond parcels in order to understand the mechanism of diamond dissolution, and the relationship with conditions in the kimberlite magma. She uses surface dissolution features on diamonds to learn about the composition and behavior of volatiles in kimberlite magmas, the presence of a free fluid phase, and their impact on the eruption style of kimberlites. Her research aims to better constrain the origin of kimberlites, processes occurring in the subcratonic mantle, and to help in predicting the preservation and quality of diamonds. |