H/F : Chemical And Physical Characterization Of The Lithosphere-Asthenosphere Boundary (Lab)

Universities and Institutes of France

France

August 22, 2022

Description

  • Organisation/Company: CNRS
  • Research Field: Astronomy Environmental science Geosciences
  • Researcher Profile: First Stage Researcher (R1)
  • Application Deadline: 22/08/2022 23:59 - Europe/Brussels
  • Location: France › CLERMONT FERRAND
  • Type Of Contract: Temporary
  • Job Status: Full-time
  • Hours Per Week: 35
  • Offer Starting Date: 01/11/2022
  • The Magmas and Volcanoes Laboratory (LMV) is a joint research unit of the University of Clermont Auvergne (UCA), the National Center for Scientific Research (CNRS, UMR 6524), and the Institute for Research for Development (IRD, UMR 163).

    The diamond deposits of the Kimberlite volcanic chimneys are natural boreholes through the earth's crust and mantle. Kimberlite magmas during their ascent to the surface sampled the rocks crossed over more than 300 km. Among the thousands of samples of mantle rock enclaves collected, a small fraction comes from the lithosphere-asthenosphere boundary. This boundary (LAB) located under the very old terrestrial cratons (more than 2.5 billion years ago) between 150 and 250km is a crucial area for the knowledge of the Earth's dynamics and in chemical and thermal exchanges between the convective deep mantle and the conductive lithospheric continental mantle.This limit also reflects a profound rheological change in mantle rocks (from brittle to ductile) where the role of fluids seems crucial (the hydrogen–H– content of minerals plays a decisive role in the mechanisms of deformation, viscosity and electrical conductivity). This boundary is known indirectly by its geophysical properties (seismic and conductimetric). The subject therefore proposes, thanks to the exceptional collections of personal mantle enclaves and the University of Cape Town to study directly petrology, mineralogy, geochemistry (H,∂D, major elements and traces) and the petrophysical characteristics of these rocks (EBSD, modeling of seismic velocities, conductivity, seismic anisotropy and conductivity). All of these geochemical and petrophysical methods are developed at the highest level at the Magmas and Volcanoes laboratory. The objective of this thesis is a better chemical and physical knowledge of this interface and to provide the community of geophysicists with strong constraints for their seismic and conductimetric models.

    Web site for additional job details

    https: // emploi.cnrs.fr/Offres/Doctorant/UMR6524-AUDCHA-015/Default.aspx

    Required Research Experiences
  • RESEARCH FIELD
  • Geosciences

  • YEARS OF RESEARCH EXPERIENCE
  • None

  • RESEARCH FIELD
  • Astronomy

  • YEARS OF RESEARCH EXPERIENCE
  • None

  • RESEARCH FIELD
  • Environmental science

  • YEARS OF RESEARCH EXPERIENCE
  • None

    Offer Requirements
  • REQUIRED EDUCATION LEVEL
  • Geosciences: Master Degree or equivalent

    Astronomy: Master Degree or equivalent

    Environmental science: Master Degree or equivalent

  • REQUIRED LANGUAGES
  • FRENCH: Basic

    Contact Information
  • Organisation/Company: CNRS
  • Department: Laboratoire magmas et volcans
  • Organisation Type: Public Research Institution
  • Country: France
  • City: CLERMONT FERRAND
  • Similar Jobs

    Add to favorites Read more...

    Post-Doc (H/F) On Modelling Of Land Surface Anthropogenization In An Earth System Model.

    Research Field: Environmental science › Earth science Environmental the HILIAISE project: • Perform a simulation with the RegIPSL model over the Iberian Peninsula with modification of soil moisture patches to mimic • If time allows,...

    Add to favorites Read more...

    Post-Doc Position (W/M) In Experimental Petrology

    Research Field: Astronomy Environmental science Geosciences Location: France › VANDOEUVRE LES NANCY With this project, we aim at quantifying experimentally, for the first time, been performed at CRPG in the last years, thus the post-doc...

    Add to favorites Read more...

    Phd Position In Astrobiology/Metabolomics/Mars Biosignatures

    Research Field: Biological sciences Geosciences › Geology Other is available in the field of astrobiology, microbial metabolomics and the - Participation and implementation of research projects in the field of including field campaigns and metabolomic...

    Indiana University at Bloomington

    United States Aug 1, 2022

    Add to favorites Read more...

    Postdoctoral Research Fellow

    Atmospheric Sciences Position Summary The Earth and Atmospheric Sciences Department at Indiana University (e.g., coastal fog, atmospheric rivers, frontal systems, tropical cyclones, collaboration, both within Indiana University (e.g., with other atmospheric science faculty in the...

    Add to favorites Read more...

    Postdoc Position

    POST-DOC position in a group of researchers Markers of pathological changes in tissues by means of Nuclear Magnetic are performed at a single, high magnetic field (resonance frequency). high magnetic field one can probe only...