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Portal > Offres > Offre UMR7358-LAUREI-001 - Chercheur post-doctoral en géochimie isotopique H/F

Postdoctoral Researcher in isotope geochemistry M/F

This offer is available in the following languages:
Français - Anglais

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General information

Reference : UMR7358-LAUREI-001
Date of publication : Thursday, November 07, 2019
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 March 2020
Proportion of work : Full time
Remuneration : 2643,22 euros brut/month
Desired level of education : PhD
Experience required : 1 to 4 years


The CRPG laboratory (Centre de Recherches Pétrographiques et Géochimiques) in Nancy, France is seeking applicants for a Postdoctoral position in radiogenic isotope and highly siderophile element geochemistry. This position is part of a collaborative project between Dr. Laurie Reisberg of the CRPG laboratory and Prof. Sisir Mondal of Jadavpur University, Kolkata, India, funded by the IFCPAR/CEFIPRA (Indo-French Center for the Promotion of Advanced Research) program. The study is aimed at furthering our understanding of how the Earth's mantle acquired its highly siderophile element budget, and will focus on komatiites and associated chromites from the Archean Gorumahishani-Badampahar greenstone belt of the Singhbhum craton of eastern India.

The postdoctoral researcher's work will center on osmium (186Os and 187Os), and potentially Sm-Nd, isotope and platinum-group element (PGE) analyses of these rocks. Nevertheless, he or she will be welcome to pursue complementary studies of these samples aimed at understanding the early stages of mantle evolution. This work will be undertaken in close collaboration with Prof. Mondal and his team at Jadavpur University, who will do detailed petrographic characterization and perform EMPA and LA-ICPMS analyses of major and trace elements of silicate, oxide and sulphide minerals, and bulk-rock geochemistry in the same samples. The postdoc will have the opportunity to travel to India to work with Prof. Mondal and his students, and to visit the Singhbhum craton to observe field relationships and conduct additional sampling. Instrumentation available for the project at CRPG include a Thermo Triton mass spectrometer with three amplifiers equipped with 1013 ohm resistors to facilitate high precision measurement of 186Os and potentially other systems with low abundance isotopes, a Finnigan MAT262 mass spectrometer dedicated to 187Os analysis, and a Thermo Neptune MC-ICPMS. An Anton Paar High Pressure Asher for sample digestion and clean lab facilities for separation chemistry are also available.


- Isotopic and geochemical analyses, including clean lab chemical separation of elements of interest, followed by analysis by mass spectrometry (Osmium isotopes, PGE abundances, potentially Sm-Nd isotope analyses and/or additional analyses proposed by the post-doc)
- Travel to India to observe field relationships and conduct supplemental sampling in the Singhbhum craton in collaboration with Prof. Sisir Mondal and his students
- Dissemination of results through publications in professional journals and presentations at international conferences


• Applicants must have completed their PhD before the starting date.
• Experience in isotope analysis using TIMS or MC-ICPMS instruments, as well as clean lab experience, is strongly recommended.
• Experience in PGE and/or Os isotope analysis would be considered a plus.

Work Context

The Centre de Recherches Pétrographiques et Géochimiques (CRPG UMR 7358 CNRS-UL) (, located in Vandoeuvre-les-Nancy in eastern France, is a geoscience research laboratory associated with both the French Centre National de Recherche Scientifique (CNRS) and the University of Lorraine (UL). One of the main research themes of the CRPG concerns the origin and evolution of the primitive Earth, and the postdoc is strongly encouraged to participate in bi-weekly meetings of this reasearch group.

Additional Information

In addition to your CV and your letter motivation, please include a list of publications and conference abstracts, and the contact information for three references.

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