Trishya Owen-Smith is an igneous petrologist and geochemist currently based at the University of Johannesburg. She completed her PhD at the University of the Witwatersrand and subsequently worked as a post-doctoral researcher at the GeoForschungsZentrum (GFZ) in Potsdam, Germany.

Her research interests include mantle geochemistry and dynamics, magma differentiation and emplacement processes, and early Earth evolution and tectonics. Her previous work has centred on examining the magmatic products of Large Igneous Provinces—in the case of the Deccan Traps, alkaline intrusive magmatism in the Seychelles; in the Paraná-Etendeka Province, dyke swarms, intrusions and flood basalts in Namibia—to interpret their emplacement and evolution, as well as implications for mantle dynamics and continental break-up. Trishya’s current research with CIMERA focuses on using petrology as a tool to understand mineralisation processes.


Owen-Smith, T.M., Ashwal, L.D., Sudo, M. & Trumbull, R.B. (2017). Age and petrogenesis of the Doros Complex, Namibia, and implications for early plume-derived melts in the Paraná-Etendeka LIP. Journal of Petrology, in press. doi:10.1093/petrology/egx021

Owen-Smith, T.M. & Ashwal, L.D. (2015). Evidence for multiple pulses of crystal-bearing magma during emplacement of the Doros layered intrusion, Namibia. Lithos, 238, 120–139. doi:10.1016/j.lithos.2015.08.019

Owen-Smith, T.M. & Ashwal, L.D. (2015). Geology of the early Cretaceous Doros layered mafic intrusion, Namibia: Complexity on a small scale. South African Journal of Geology, 118(2), 185–211. doi:10.2113/gssajg.118.2.185

Owen-Smith, T.M., Ashwal, L.D., Torsvik, T.H., Ganerød, M., Nebel, O., Webb S.J. & Werner S.C. (2013). Seychelles alkaline suite records the culmination of Deccan Traps continental flood volcanism. Lithos, 182–183, 33–47. doi:10.1016/j.lithos.2013.09.011

Ganerød, M., Torsvik, T.H., van Hinsbergen, D.J.J., Gaina, C., Corfu, F., Werner, S., Owen-Smith, T.M., Ashwal, L.D., Webb, S.J. & Hendriks, B.W.H. (2011). Palaeoposition of the Seychelles microcontinent in relation to the Deccan Traps and the Plume Generation Zone in Late Cretaceous–Early Palaeogene time. In: Van Hinsbergen, D. J. J., Buiter, S. J. H., Torsvik, T. H., Gaina, C. & Webb, S. J. (eds). The Formation and Evolution of Africa: A Synopsis of 3.8 Ga of Earth History. Geological Society, London, Special Publications, 357, 229–252. doi:10.1144/SP357.12