Prof. Anton le Roex

Chamber of Mines Professor of Geochemistry

Dean of Science

Office of the Dean of Science
PD Hahn, Room 310
Level 6
Department of Geological Sciences
Ph:  +27 (0)21 650 2171
Fax:  +27 (0)21 650 3783



My research interests lie in understanding the geochemical composition and evolution of mafic igneous rocks, their differentiates and their mantle source regions. The role of mantle plumes in the generation of intra-plate magmatism, both within oceanic and continental regions, the origin of their geochemical characteristics and their interaction with surrounding asthenospheric and overlying lithospheric mantle are fundamental foci of my current research. To this end I am currently involved in the following research projects:

  • Geochemistry of Southern Ocean ridge system basalts
  • Geochemistry of Southern Ocean island and seamount basalts
  • Petrology and geochemistry of the alkaline ring complexes in northwestern Namibia and their relation to hotspot tracks in the South Atlantic
  • Geochemistry of the early phase of the Tristan mantle plume, northwestern Namibia, and characterisation of the mantle source region of the Etendeka-Parana flood basalts
  • Isoptope and trace element characterization of the sub-Gondwana mantle lithosphere, and the origin of LOMU signatures in mantle beneath the South Atlantic
  • The geochemical characterisation and petrogenesis of southern African kimberlites and melilitites, and their relationship to mantle plume upwelling

Latest Publications

Coe N, le Roex AP, Gurney JJ, Pearson G and Nowell G (2008) Petrogenesis of the Swartruggens and Star Group II kimberlite dyke swarms, South Africa: constraints from whole rock geochemistry. Contib. Mineral. Petrol. 10.1007/s00410-008-0305-1

Becker, M, le Roex, AP and Class C (2007) Geochemistry and petrogenesis of South African transitional kimberlites located on and off the Kaapvaal Craton. South African Journal of Geology 110, 631-646

Class, C and le Roex AP (2008) Ce anomalies in Gough Island Lavas – Trace Element Characteristics of a Recycled Sediment Component. Earth Planet. Sci. Lett. 265, 475-486.

Merry, M and le Roex AP (2007) Megacryst suites from the Lekkerfontein and Uintjiesberg kimberlites, southern Africa: evidence for a non-cognate origin. South African Journal of Geology 110, 597-610.

Appleyard CM, Bell DR and le Roex, AP (2007) Petrology and geochemistry of eclogite xenoliths from the Rietfontein kimberlite, Northern Cape, South Africa. Contrib. Mineral. Petrol. 154, 309-333.

Barry TL, Pearce JA, Leat PT, Millar IL and le Roex, AP (2006) Hf isotope evidence for selective mobility of high-field-strength-elements in a subduction setting: South Sandwich Islands. Earth Planet. Sci. Lett. 252, 223-244

Class, C and le Roex, AP (2006) Continental material in the shallow oceanic mantle – how does it get there? Geology 34, 129-132.

Dludla S, le Roex AP and Gurney JJ (2006) Eclogite xenoliths from the Premier kimberlite, South Africa: geochemical evidence for a subduction origin. South African Journal of Geology 109, 351-366.

Becker M and le Roex AP (2006) Geochemistry of South African on- and off-craton, group I and group II kimberlites: petrogenesis and source region evolution. J. Petrol. 47: 673-703

Gregoire M, Tinguely C, Bell DR and le Roex AP (2005) Spinel lherzolite xenoliths from the Premier kimberlite (Kaapvaal craton, South Africa): nature and evolution of the shallow upper mantle beneath the Bushveld complex. Lithos 84, 185-205



  • PhD University of Cape Town, 1980
  • BSc (Hons) University of Cape Town, 1976
  • BSc University of Stellenbosch, 1975


  • Dean of Science, 2001-present
  • Professor, University of Cape Town, 1997-present
  • Associate Professor, University of Cape Town, 1989-1997
  • Visiting Professor, University of Hawaii, 1989-1990
  • Lecturer/Senior Lecturer, University of Cape Town, 1986-1988
  • Research Officer/Senior Research Officer, University of Cape Town, 1982-1985
  • Post-doctoral Fellow, Woods Hole Oceanographic Institution, Massachusetts, USA, 1980-1981
  • Research Officer, Department of Geochemistry, University of Cape Town, 1979-1980

Professional Associations