Institut für Geowissenschaften, Christian-Albrechts-Universität zu Kiel, Kiel University

University of Southampton and Director Raddec International

National Geophysical Research Institute, Hyderabad, India

Professor of Geology and Geochemistry, Oregon State University

Montanuniversität Leoben - University of Leoben

Professor Emeritus, University of Sussex, UK

Professor, Queen's University

The University of Edinburgh

McMaster University, School of Earth, Environment & Society

Dept of Geological Sciences, University of Cape Town