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      

fax: +27 (0)21 808 3129

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
Petrological, geochemical and rock magnetic techniques are being used to map the internal compositional structure of many plutonic and volcanic masses (in South Africa and Australia) and to investigate the mechanisms by which granitic magmas attain their compositional heterogeneity and Earth’s continental crust becomes compositionally differentiated. Stevens and Buick and Kisters (Stellenbosch), Birch (Museum Victoria), Maas (Melbourne University), Nicholls (Monash), Regmi (Namibia), Waight (Danish Geological Survey), Phillips (Phillipsgold) and Jung (Hamburg) are the main collaborators.

There are numerous sub-projects within this overall theme, including a major study of the giant Donkerhuk batholith in Namibia, funded by a major grant (to Clemens, Kisters and Buick) from the South African NRF.


download Clemens biblio 2019.pdf


Honours: L. Pepler, M. Baleta and W. Watt – jointly supervised with Kisters