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PhD or post-doc financing at the University of Lyon in Geophysics: September 2020 (Publié le 09/07/2020)

On the long time scale of geologic evolution, the Earth’s solid silicate mantle can deform like a fluid. This is, however, a strange fluid and its rheological properties are poorly known. The laboratory experiments can only be done with deformation rates, temperatures and imposed stresses far from conditions appropriate for planetary interiors. Global scale geophysical models can only constrain average properties with large uncertainties, such as an average viscosity between 1019-1022 Pa s. Localized weakening of the mantle by several orders of magnitude are also necessary to account for the existence of plate tectonics, with narrow deformable boundaries and very stable interiors.

We propose to address this problem by coming back to the microscopic properties of deformation and attempting to construct a coherent macroscopic model of the mantle rheology. This should account for the time evolution of the mineral grain-sizes (that tend spontaneously to coarsen but can reduce during deformation), their different mechanisms of deformation (that have linear or non-linear dependences on depending on the grain-sizes) and their anisotropies.

Three years of financing are available for a PhD that will take place at the Laboratoire de Géologie de Lyon (http://lgltpe.ens-lyon.fr/) under the supervision of Yanick Ricard (ricard@ens-lyon.fr see https://perso.ens-lyon.fr/yanick.ricard/). Alternatively this three year PhD could finance two years of Postdoc.

The candidates could either come from a graduate or PhD program in Earth Science with a solid background in continuum physics, or from Physics or Material sciences with an interest in Earth sciences.

To apply, either for a 3-year PhD or a 2-year postdoc (or for further precisions), contact me (ricard@ens-lyon.fr) with a statement of interest and a CV that should include references.

 

Postdoctoral researcher (Published 14 january 2020)

The Institut Lumière Matière, Physics department, and the Laboratoire de Géologie de Lyon, Department of Earth and planetary sciences, jointly invite applications from prospective postdoctoral researchers. The successful applicant will study the viscosity and vibrational properties of water and aqueous solutions under extreme conditions using high-pressure, high-temperature experimental techniques, and should hold a Ph.D. in Physical Chemistry, Physics, or Earth and Planetary Sciences by the start date. The position is for 15 months, renewable once contingent on research progress and is supported by the french ANR. Experience with microscopy, vibrational spectroscopy, scientific programming, will be appreciated.  

For more information, contact PI Frédéric Caupin : frederic.caupin@univ-lyon1.fr 
To apply, please send a CV, a list of publications and communications, a 1–2 pages statement of research interests, and names and contact information for 2–3 references to Frédéric Caupin. Review of applications will begin on 16 March 2020 and will continue until the position is filled.


Ingénieur de Recherche (IR) Calcul Scientifique (Publié le 14 mai 2019)

La date limite (indicative) pour candidater est au 5 juillet 2019. Vous trouverez toutes les informations pour cette offre sur le document joint.
 

Post Doc in Environmental Microbiology - Biogeochemistry (Published : 15 june 2018)

The Laboratory of Geology at Lyon (Université Lyon1 & ENS de Lyon, France) invites applications for a postdoctoral research associate in environmental microbiology - biogeochemistry.

More informations here


Post Doc IMPACT ERC (Published : 10 july 2017)

One postdoc opening is available for the IMPACT ERC project. IMPACT aims to retrace the thermodynamic path of the condensation of the protolunar disk, to bring physical and chemical constraints on the impact model, and to characterize the formation of the Moon and of the Earth. This position is to study the behavior of volatiles in the supercritical state of silicate minerals. The successful candidates will employ first-principles molecular-dynamics calculations to compute the equations of state of the liquid, gas and supercritical states, position the supercritical points and/or surfaces, determine the speciation in the fluids, and predict isotope partitioning factors.

A doctoral degree in Earth sciences, solid-state physics and/or chemistry or materials science is preferred. Computing skills are highly appreciated. Proficiency in written and spoken English is mandatory. Previous experience with first-principles calculations and molecular-dynamics is required, as well as solid knowledge of condensed-matter physics.

The application should be adressed to Dr. Razvan Caracas (razvan.caracas@ens-lyon.fr). The package will include CV, full list of publications, names of three referees, motivation letter, including specific interests and prior experience in areas related to mineral physics. Applications will be considered until the position is filled. The position is open starting with autumn 2017. A competitive package of salary and employee benefits is offered.

Please mention in your application the website or mailing list where you found the offer.