| 2003-
| Cecil and Ida Green Professor of Earth Sciences
| EAPS-MIT.
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| 2000-2003
| Professor of Geophysics
| EAPS-MIT.
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| 2001-
| Visiting Professor of Geophysics
| Utrecht University, Department of Earth Sciences (seismology), The Netherlands
|
| 1998-
| Visiting Professor
| Institut de Physique du Globe de Paris (IPGP) (Equipe: Sismologie Globale), France.
|
| 1998-2000
| Associate Professor (tenured since 1999)
| EAPS-MIT.
|
| 1996-1998
| Assistant Professor
| EAPS-MIT.
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| 1996-1998
| Adjunct Fellow
| Australian National University (ANU), Research School of Earth Sciences, Australia.
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| 1992-1995
| Research Fellow
| RSES-ANU.
|
| 1990-1992
| Postdoctoral Research Fellow
| The University of Leeds, (Earth Sciences), United Kingdom
|
| 1986-1990
| Graduate Research Assistant
| Utrecht University, Department of Theoretical Geophysics
|
| 1983-1984
| Lecturer, Geophysics and Structural Geology
| University of Botswana, Botswana
|
| 2003-
| Editor EPSL: Earth and Planetary Science Letters (Elsevier).
|
| 2003-
| Editor GJI: Geophysical Journal International (Blackwell Scientific Publisher).
|
| 2002-
| Editorial Board Geology (Geological Society of America).
|
| 2001-
| Editorial Board PEPI: Physics of the Earth and Planetary Interiors (Elsevier).
|
| 2000-2003
| Editorial Board EPSL: Earth and Planetary Science Letters (Elsevier).
|
| 1998-2003
| Associate Editor JGR: Journal of Geophysical Research (AGU).
|
| 1999-2000
| Associate Editor G3: Geochemistry, Geophysics, and Geosystems (Electronic journal, AGU).
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| 2003-2005
| Co-Editor Structure, Composition, and Evolution of Earth's Deep Mantle (Geophysical Monograph 160, AGU).
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| 1999-2001
| Co-Editor
Processes and Consequences of Deep Subduction (Elsevier; also available as Special Issue of PEPI).
|
| 1998-1999
| Co-Editor Structure, Composition, and Evolution of
Continental Lithosphere (Developments in Geotectonics 24, Elsevier; also available as
Special Issue of Lithos).
|
| 1998-1999
| Co-Editor The History and Dynamics of Global Plate Motion (Geophysical Monograph 121, AGU).
|
| 1996-1997
| Co-Editor Structure and Evolution of the Australian Continent (Geodynamics Series 26, AGU).
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| 1990-
| Referee for Nature, Science, Geology, Journal of Geophysical Research, Geophysical Research Letters, Geophysical Journal International, Earth and Planetary Science letters, Physics of the Earth and Planetary Interiors, Tectonophysics, The Australian Journal for Earth Sciences, and for research proposals of the U.S. National Science Foundation (NSF), the Australian Research Council (ARC), and the National Environmental Research Council (NERC).
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