Team leader : [FonctionNom fonction=’Responsable équipe Géochimie’]

The geochemistry team includes about twenty scientists and their research activities are organized around 3 main themes:

• Source, genesis and chronology of magmas
  • Chemical Geodynamics
  • Magmatic processes in a continental context

• Volatile elements and magma degassing
  • The cycle of volatile elements in the mantle
  • Behavior of trace elements, degassing kinetics and new tracers

• Evolution of the Primitive Earth
  • Origin, composition of the Earth, early evolution and primitive environments
  • Archean Geodynamics

The instrumental facilities consist of an inductively coupled plasma emission spectrometer ICP-AES type (HORIBA Jobin Yvon Ultima C), and two ICPMS mass spectrometers (Agilent 7700 et Element 2), a MC-ICPMS Neptune Plus and two TIMS (Triton, Triton Plus), and a counting chain α and β and 2 spectrometers α and β for dating and dosage of radioactive elements of the U-Th series. The Resonetics M-50E 193nm excimer laser system can be connected to the different ICPMS depending on the applications (trace elements, U-Th-Pb geochronology, Pb, Nd, Hf isotopes, Si stable isotopes). This instrumental facilities is completed by pressurized clean rooms for dedicated to the different chemistry procedures and equipped with laminar flow hoods.