Professor, Geological Sciences, Nelson Mandela University

Expert Analyst, at Dept. of Earth Science, Utrecht University

Research Professor, University of Hawaii

Associate Professor, School of Earth, Atmosphere and Environment, Monash University

Assoc. Professor & Head of Department, Dept. of Geological Sciences, University of Cape …

University of South Carolina

CNRS, CRPG, University of Lorraine, France

Research Scientist, Freie Universität Berlin, Institut für Geologische Wissenschaften

Nanjing University

The University of Liverpool