Home > People > Academic Staff > Johann Diener

Prof. Johann Diener

Associate Professor

Metamorphic petrology

Department of Geological Sciences
Upper Campus
University of Cape Town
Rondebosch, 7701, RSA
Room 409
Ph:  +27 (0)21 650 2926
Fax:  +27 (0)21 650 3783




My main research interest is the development and application of mineral equilibria modelling techniques (THERMOCALC) to investigate metamorphic processes. Specific interests are the conditions and mechanisms of migmatisation and melt migration through lower-crustal rocks (with ongoing projects in the Namaqua Metamorphic Complex in South Africa and Namibia), and the interplay of physical and chemical processes during crustal reworking.


Diener, J.F.A., Thomas, R.J., Macey, P.H. (2017) Pan-African accretionary metamorphism in the Sperrgebiet Domain, Gariep Belt, SW Namibia, Precambrian Research, 292, 152–162.

Schorn, S. & Diener, J.F.A. (2017) Details of the gabbro–to–eclogite transition determined from microtextures and calculated chemical potential relationships, Journal of Metamorphic Geology, 35, 55–75.

Palin, R.M., White, R.W., Green, E.C.R., Diener, J.F.A., Powell, R. & Holland, T.J.B. (2016) High-grade metamorphism and partial melting of basic and intermediate rocks, Journal of Metamorphic Geology, 34, 871–892.

Green, E.C.R., White, R.W., Diener, J.F.A., Powell, R., Holland, T.J.B. & Palin, R.M. (2016) Activity–composition relations for the calculation of partial melting equilibria in metabasic rocks, Journal of Metamorphic Geology, 34, 845–869.

Thomas, R.J., Macey, P.H., Spencer, C., Dhansay, T., Diener, J.F.A., Lambert, C.W., Frei, D. & Nguno, A. (2016) The Sperrgebiet Domain, Aurus Mountains, SW Namibia: a ~2020–850 Ma window within the Pan-African Gariep Orogen, Precambrian Research, 286, 35–58.

Diener, J.F.A., Fagereng, Å. & Thomas, S.A.J. (2016) Mid-crustal shear zone development under retrograde conditions: pressure–temperature–fluid constraints from the Kuckaus Mylonite Zone, Namibia, Solid Earth, 7, 1331–1347.

Cross, C.B., Diener, J.F.A. & Fagereng, Å. (2015) Metamorphic imprint of accretion and ridge subduction in the Pan-African Damara Belt, Namibia, Journal of Metamorphic Geology, 33, 633–648.

Doukkari, S.A., Ouzegane, K., Godard, G., Diener, J.F.A., Kienast, J.-R., Liégios, J.-P., Arab, A. & Drareni, A. (2015) Prograde and retrograde evolution of eclogite from Adrar Izzilatène (Egéré-Aleksod terrane, Hoggar, Algeria) determined from chemical zoning and pseudosections, with geodynamic implications, Lithos, 226 217–232.

Diener, J.F.A. & Fagereng, Å. (2014) The influence of melting and melt drainage on crustal rheology during orogenesis, Journal of Geophysical Research: Solid Earth, 119, 6193–9210.

Diener, J.F.A., White, R.W., & Hudson, T.J.M.­ (2014) Melt production, redistribution and accumulation in mid-crustal source rocks, with implications for crustal-scale melt transfer, Lithos, 200–201, 212–225.



  • PhD University of Melbourne, 2008
  • MSc University of Stellenbosch, 2004
  • BSc(Hons) University of Stellenbosch, 2002
  • Senior Lecturer, University of Cape Town, 2014-present
  • Lecturer, University of Cape Town, 2008-2013
Professional Affiliations
  • Geochemical Society
  • Geological Society of South Africa
  • Geological Society of South Africa (Western Cape Branch)
  • Geological Society of Australia (2006-2007)

Page top