Dr Rosalie Tostevin

Lecturer at the University of Cape Town

 Interests: Sedimentology, isotope geochemistry, trace metal geochemistry, Precambrian geology and geobiology

Address: Room 502, Department of Geological Sciences​, University of Cape Town, Rondebosch, Cape Town, South Africa.
+27 (0)21 650 2140
Email: rosalie.tostevin@uct.ac.za


I’m interested in the interactions between life and the environment on the early Earth. To address this, I use a combination of field work, sedimentary geochemistry and experiments to infer how oxygen levels and nutrient availability have changed through time on local and global scales. I then tie these constraints directly to geobiological records.

My specific research interests include:

  • Origins of banded iron formation
  • Patterns of metal availability in seawater through time
  • Bio-availability of phosphoro in anoxic oceans
  • The marine sulfur cycle in the modern ocean and deep time
  • The origin and diversification of animals
  • Changes in oxygen availability in the oceans through time



  • PhD, University College London, 2014
  • MSci (with 1st class honours), University of Cambridge, 2011


  • Lecturer, University of Cape Town, 2019 – present
  • Postdoctoral research associate, University of Oxford, 2015–2019
  • Postdoctoral research associate, University of Otago, 2015