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Profil de Michel Grégoire

Grégoire Michel

Email :

Téléphone / phone: 05 61 33 29 77

Bureau / office : F020

Institution : CNRS

Statut / status: Chercheur

Adresse professionnelle / address:

14 Avenue E. Belin
31400 Toulouse France

Site perso / personal website :

Born:  November 6, 1961 (France)         Family position: married (three childrens)

Home :15 Avenue des Lascardos 31320 Castanet Tolosan, France

Phone: +33 (0)5 61 80 65 92

Office: UMR 5563-GET Géosciences Environnement Toulouse, Observatoire Midi-Pyrénées, 14 Av. E. Belin, 31400 Toulouse

Telephone: (33) 05 61 33 29 77       e-mail:


Actual Position :

« Directeur de recherche » (Senior Scientist), CNRS, UMR 5563, Observatoire Midi-Pyrénées

Academic Awards and Distinctions:

A. Lacroix Prize (1994)conferred by the French Society of Mineralogy and Crystallography.

AUSEL Prize (1995) conferred by the Scientific and Economic University of the Loire (France).

Honorary Associate (2001-2002) Macquarie University, Australia.


Scientific level :

Doctor « Habilité à diriger des recherches » of the Paul Sabatier University (2000) – Toulouse (France)

Doctor of the Jean Monnet University (Ph-D 1994) - Saint Etienne (France).


Previous positions

01/10/2001 to 30/09/2009:

« Chargé de recherche 1ère classe » CNRS, UMR 5562 (Laboratory Terrestrial and Planetary Dynamics), Observatoire Midi-Pyrénées

01/12/1999 to 30/09/2001:

Senior Research Officer

Department of Geological Sciences, University of Cape Town, 7701 Rondebosch, South Africa

30/06/1997 to 30/11/1999:

Macquarie University Research Fellow,

Key Centre for the Geochemical Evolution and Metallogeny of Continents (GEMOC), School of Earth Sciences, Macquarie University, Sydney, NSW 2109, Australia.

30/06/1996 to 30/06/1997:

International Research Fellow, Key Centre for the Geochemical Evolution and Metallogeny of Continents (GEMOC), School of Earth Sciences, Macquarie University, Sydney, NSW 2109, Australia


Junior lecturer in Geology, Jean Monnet University, Saint-Etienne, France


Petrology, Mineralogy and Geochemistry of the deep lithosphere (lower crust and upper mantle)

Key words: Petrology, Mineralogy, Geochemistry, Magmatism, Ultramafic-mafic rocks, Mantle xenoliths, Ophiolites, Peridotites, Gabbros, Oceanic granulites, Cumulates, Mantle Metasomatism, Underplating processes, Crustal thickening, Continental nucleii,

I have broad interests in petrology, mineralogy and geochemistry, with my greatest enthusiasm being in the study of ultrabasic and basic rocks from lower crustal and mantle domains. I am currently undertaking collaborative work on petrological and geochemical studies of ultrabasic and basic rocks from other areas in the world (Patagonia, Kerguelen Islands, Philippines, French Massif Central, Poland, Algeria, Oman, California, Cameroon and South Africa). All these studies are focusing on the nature and evolution of the various metasomatic melts percolating the oceanic and sub-continental upper mantle both in intraplate and subduction zone settings through a detailed analyses of the major and trace element contents both in bulk rocks and minerals using electron microprobe and solutions and laser ICP-MS techniques (I am a specialist of these techniques). A particular aim of these studies is to look at the residency of the trace elements in the upper mantle and lower crustal rocks and to calculate the inter-mineral partition coefficients in these natural mantle and lower crustal samples. From the last 10 years I also study ultramafic and mafic rocks occurring in other type of occurrences such as the ophiolites, the orogenic lherzolite massifs and the deep layered intrusions.

The final goal of all these studies is to better constrain and better understand the nature and the evolution of the lower crust and the upper mantle in various settings and in particular to better understand the nature and evolution of the crust-mantle boundary and the chemical exchanges taking place between these two major earth reservoirs.


- Vice President of the Scientific Commission of the Midi Pyrénées Observatory, since September 2017

- Deputy Director of the UPEE Committee of Toulouse III University, since September 2017

- Head of the laboratory Géosciences Environnement Toulouse (260 people) 2011-2017

- Member of the council of the Master2 « Sciences dela Terreet des planètes telluriques » 2004-2010

- Member of the management committees of the thin sections, electron microprobe and ICPMS-MC-ICPMS laboratories 2004-2010

- Member of the council of the Ph-D in Earth Sciences 2006-2011



- Vice President of the SFMC (French Society of Mineralogy and Crystallography) since 2015

- Member of the council of the HCERES (High Council of the Evaluation of Research and Higher Education) since 2015

- Member of the Scientific Council of INSU (National Institute of Sciences of the Universe-CNRS) 2010-2014

- Member of the section 18 (deep Earth) of the National committee of CNRS (2004-2008) and 2012-2016)

- Member of the section 46 (Environmental risk and society) of the National committee of CNRS (2004-2008)

- Member of the section 50 (Research management) of the National committee of CNRS (2012-2016)



- Co Chief-Editor of Geostandards and Geoanalytical Research (Wiley) (2009-2016)

- Member of the editorial board Geostandards and Geoanalytical Research (2007-2009).

- Member of the council of IAG (International Association of Geoanalysts) (2006-2011)

- 2006, 2007, 2010, 2012, 2014 to 2018: Co-convener of scientific sessions at the EGU annual general assembly (Vienna, Austria).

- Co-convener of the European Mantle Workshop (Ferrara, Italy, 29-31 August 2007)  

- Co-convener of a scientific session (2008) at International Geological Congress (Oslo, Norway).

Main/Recent publications

MELCHIORRE M., COLTORTI M.,GREGOIRE M.,BENOIT M. (2015).Refertilization process in the Patagonian subcontinental lithospheric mantle of Estancia Sol de Mayo (Argentina).Tectonophysics650, 124–143.

FRANCE L., CHAZOT G., KORNPROBST J., DALLAI L., VANNUCCI R.,GREGOIRE M.,BERTRAND H., BOIVIN P. (2015).Mantle refertilization and magmatism in old orogenic regions: The role of late-orogenic pyroxenites.Lithos232, 49–75

PUZIEWICZ J., MATUSIAK-MAŁEK M., NTAFLOS T.,GRÉGOIRE M,KUKUŁA A. (2015).Subcontinental lithospheric mantle beneath Central Europe.International Journal of Earth Sciences104 (8), 1913-1924

RIGO A., ADAM C.,GREGOIRE M.,GERBAULT M., MEYER R., RABINOWICZ M., FONTAINE F., BONVALOT S. (2015). Insights for the melt migration, the volcanic activity and the ultrafast lithosphere delamination related to the Yellowstone plume (Western USA).Geophysical Journal International203 (2), 1274-1301.

KILZI M.A.,GRÉGOIRE M.,BOSSE V., BENOÎT M., DRIOUCH Y., DE SAINT BLANQUAT M., DEBAT P. (2016). Geochemistry and zircon U–Pb geochronology of the ultramafic and mafic rocks emplaced within the anatectic series of the Variscan Pyrenees: The example of the Gavarnie–Heas dome (France).Comptes Rendus-Geosciences348 (2), 107-115.

PELOROSSO B., BONADIMAN C., COLTORTI M., FACCINI B., MELCHIORRE M., NTAFLOS T.,GREGOIRE M.(2016). Pervasive tholeiitic refertilisation and heterogeneous metasomatism in Northern Victoria Land lithospheric mantle (Antarctica).Lithos248, 493-505

MBASSA B. J., KAMGANG P.,GRÉGOIRE M.,NJONFANG E., BENOIT B., ITIGA Z., DUCHENE S., BESSONG M., WONKWENMENDAM NGUET P., NFOMOU N. (2016). Evidence of heterogeneous crustal origin for the Pan-African Mbengwi granitoids and the associated mafic intrusions (northwestern Cameroon, central Africa).Comptes Rendus Geoscience348 (2), 116-126.

RIBEIRO J., MAURY R.,GREGOIRE M.(2016). Are Adakites Slab Melts or High-pressure Fractionated Mantle Melts?Journal of Petrology, 57, 839–862.

TILHAC R., CEULENEER G., GRIFFIN W.L., O’REILLY S.Y., PEARSON N.J., BENOIT M., HENRY H., GIRARDEAU J.,GREGOIRE M.(2016).Primitive Arc Magmatism and Delamination: Petrology and Geochemistry of Pyroxenites from the Cabo Ortegal Complex, Spain. Journal of Petrology, 57, 1921–1954.

WASILEWSKI B., DOUCET L.S., MOINE B., BEUNON H., DELPECH G., MATTIELLI N., DEBAILLE V., DELACOUR A.,GRÉGOIRE M., GUILLAUME D., COTTIN J.-Y. (2017).Ultra-refractory mantle within oceanic plateau: Petrology of the spinel harzburgites from Lac Michèle, Kerguelen Archipelago.Lithos272–273, 336–349.

PELOROSSO B., BONADIMAN C., COLTORTI M., MELCHIORRE M., GIACOMONI P. P., NTAFLOS T.,GREGOIRE M., BENOIT M (2017). Role of percolating melts in Antarctic subcontinental lithospheric mantle: New insights from Handler Ridge mantle xenoliths (northern Victoria Land, Antarctica).Geological Society of America Special Papers, 526, p. SPE526-07, first published on February 27, doi:10.1130/2017.2526(07)

KHEZERLOU A.A., AMEL N.,GREGOIRE M.,MOAYYED M., JAHANGIRI A. (2017). Geochemistry and mineral chemistry of pyroxenite xenoliths and host volcanic alkaline rocks from North West of Marand (NW Iran).Mineralogy and Petrology, 111, 865-885.

HENRY H., TILHAC R., GRIFFIN W.L., O’REILLY S.Y., Satsukawa T., Kaczmarek M.-A.,GrégoireM.,CEULENEER G (2017). Deformation of mantle pyroxenites provides clues to geodynamic processes in subduction zones: a case study of the Cabo Ortegal complex, Spain.Earth and Planetary Science Letters, 472, 174–185.

MATUSIAK-MALEK M., PUZIEWICZ J., NTAFLOS T.,GREGOIRE M.,KUKULA A., WOJTULEK P. (2017). Origin and evolution of sparse amphibole-bearing mantle peridotites from Wilcza Góra (Lower Silesia, SW Poland), Central Europe: xenolith suite case.Lithos, 286-287, 302-323.

BORISOVA A.Y., BOHRSON W.A.,GRÉGOIRE M.(2017). Origin of primitive ocean island basalts by crustal gabbro assimilation and multiple recharge of plume-derived melts.Geochemistry Geophysics Geosystem, 18, 2701–2716.

TASSARA S., GONZÁLEZ-JIMÉNEZ J.M., REICH M., SCHILLING M., MORATA D., BEGG G., SAUNDERS E., GRIFFIN W.L., O´REILLY S.Y.,GRÉGOIRE M., BARRA F., CORGNE A. (2017). Plume-subduction interaction forms large auriferous provinces.Nature Communications, 8: 843, DOI: 10.1038/s41467-017-00821.

CORGNE A., SCHILLING M.E.,GREGOIRE M., LANGLADE J. (2018). Experimental constraints on metasomatism of mantle wedge peridotites by hybridized adakitic melts.Lithos, 308–309, 213–226.

TASSARA S., GONZÁLEZ-JIMÉNEZ J.M., REICH M., SAUNDERS E.,  LUGUET A., MORATA D.,GRÉGOIRE M., VAN ACKEN D., SCHILLING M., BARRA F., NOWELL G., CORGNE A (2018). Highly siderophile elements mobility in the subcontinental lithospheric mantle beneath southern Patagonia.Lithos, 314-315, 579-596.

MONSEF I., RAHGOSHAY M., PIROUZ M., CHIARADIA M.,GREGOIRE M., CEULENEER G. (2018). The Eastern Makran Ophiolite (SE Iran): evidence for a Late Cretaceous fore-arc oceanic crust.International Geology Review, DOI:10.1080/00206814.2018.1507764 (in press).

MBASSA, B.J., NJONFANG, E., GREGOIRE, M., ITIGA Z., KAMGANG P., BENOIT M., NDJIGUI P.D., NEH NGWA C., NOLLA J.D.. (2018). Evaluation of the mineralizing potential of the Mbengwi plutonics, Northwestern Cameroon, Central Africa.Arabian Journal of Geosciences, 11, DOI: 10.1007/s12517-018-4018-0.

SOLTANMOHAMMADI A.,GREGOIRE M., RABINOWICZ M., GERBAULT M., CEULENEER G., RAHGOSHAY M., BYSTRICKY M., BENOIT M. (2018). Transport of Volatile-rich Melt from the Mantle Transition Zone via Compaction Pockets: Implications for Mantle Metasomatism and the Origin of Alkaline Lavas in the Turkish-Iranian Plateau.Journal of Petrology, 59(12), 2273–2310


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