Earth Sciences
Welcome to Stellenbosch University

​Prof. JD Clemens

Dept of Earth Sciences, University of Stellenbosch

Private Bag X1, 7602 Matieland, South Africa

phone: +27 (0)21 808 3159      

Email: jclemens at


appointed as Professor Emeritus
Fellowship Diploma of Geology - RMIT University (Australia)
PhD Monash University (Australia)
Fellow of the Mineralogical Society of Great Britain and Ireland
Fellow of the Mineralogical Society of America
Fellow of the Royal Society of South Africa


Research Interests

Igneous petrogenesis, especially of granitic rocks

High-grade metamorphism and crustal melting

Experimental petrology

Current Projects

The Configurations and Origins of Chemical Structure in Felsic Magmas in Continental and Arc Crust
Specific petrological, chemical  and isotopic studies of plutonic and volcanic masses and their component minerals (in South Africa and Australia), to investigate the mechanisms by which granitic magmas attain their compositional heterogeneity, the structure of Earth's continental crust and the origins of its compositional differentiation. Stevens and Kisters (Stellenbosch), Birch (Museum Victoria), Maas (Melbourne University), Nicholls (Monash University) and Phillips (Phillipsgold) are the main collaborators.

There are numerous sub-projects within this overall theme, currently in Australia, South Africa and Namibia.


download Clemens biblio 2021.pdf


PhD: Tahnee Otto and Moritz Muehlberg (jointly supervised with Stevens), Martin Lindner (jointly supervised with F. Finger, Salzburg)​