2009-present
Professor for geochemistry, University of Köln, Germany

2004-2009
Professor for geochemistry, University of Bonn, Germany

2000-2004
Assistant Professor, University of Münster, Germany

1998-1999
Postdoctoral fellow, University of Münster, Germany

1998
Postdoctoral fellow, University of Tasmania, Hobart, Australia

2004
Habilitation in Mineralogy and Geology, University of Münster, Germany

1994- 1997
PhD (Dr. rer. nat.), University of Göttingen, Germany

1987- 1993
Study of geology and mineralogy at University of Göttingen, Diplom in Geology

2007
Program Comitte Member Goldschmidt 2007 Meeting Cologne

2005-2007
Member of EAG Council

2003
Victor Moritz Goldschmidt Award, German Mineralogical Society

2002
Hans Cloos Award, Geologische Vereinigung

1993
Scholarship by the Studienstiftung des Deutschen Volkes