Accueil - CRPG

Experimental constraints on germanium diffusivity in metal and silicate phases during core formation of planetesimals and terrestrial planets

Dernières publications

Experimental constraints on germanium diffusivity in metal and silicate phases during core formation of planetesimals and terrestrial planets

Baptiste Le Bellego, Celia Dalou, Béatrice Luais, Pierre Condamine, Vincent Motto-Ros, Laurent Tissandier Geochimica et Cosmochimica Acta 422: 397-411 Voir en ligne : https://doi.org/10.1016/j.gca.2025.11.038 The segregation of metallic cores from silicate mantles during early planetary differentiation is a key process shaping the chemical evolution of terrestrial bodies. A critical factor controlling metal-silicate equilibration during this stage

Nitrogen isotopic variations in the early Solar System recorded by pallasites

Dernières publications

Nitrogen isotopic variations in the early Solar System recorded by pallasites

J. Gamblin, E. Füri, B. Luais, L. Zimmermann Geochemical Perspectives Letters v39 Voir en ligne : https://doi.org/10.7185/geochemlet.2607 To gain new insights into nitrogen (N) isotopic variations in the early Solar System, N and noble gas (Ne, Ar) isotopes were measured in metal fragments and olivine separates from thirteen pallasites and five IIIAB iron meteorites. While δ15N

Reactivation of a transcrustal plumbing system during a rifting event (Asal Rift, Djibouti)

Dernières publications

Reactivation of a transcrustal plumbing system during a rifting event (Asal Rift, Djibouti)

Juliette Pin, Lydéric France, Gilles Chazot, Etienne Deloule, Mohamed Ahmed Daoud, Bernard Le Gall Geology (2026) 54 (4): 348–353. Voir en ligne : https://doi.org/10.1130/G53776.1 Magmatism plays a central role in rift dynamics, yet the structure and evolution of magma plumbing systems during continental break-up remain poorly constrained. The Afar Rift offers a rare opportunity to study

A fast double-stack chromatographic separation of germanium from silicate material for isotope analysis with MC-ICP-MS

Dernières publications

A fast double-stack chromatographic separation of germanium from silicate material for isotope analysis with MC-ICP-MS

Qasid Ahmad, Damien Cividini & Béatrice Luais Journal of Analytical Atomic Spectrometry, 41(3), 935–941 Voir en ligne : https://doi.org/10.1039/D5JA00471C Germanium (Ge) isotope measurements (δ74/70Ge relative to NIST3120a) have attracted increasing attention in geochemistry and cosmochemistry; however, analyses of silicate material with low Ge contents remain difficult due to complex sample preparation and purification procedures. Here, we

The importance of considering temperature- and composition-dependent partition coefficients in differentiation models

Dernières publications

The importance of considering temperature- and composition-dependent partition coefficients in differentiation models

Toussaint A., France L. Lithos, Volumes 522–523, February 2026, 108395 Voir en ligne : https://doi.org/10.1016/j.lithos.2025.108395 Quantifying the parameters that govern magma differentiation is key to understanding the evolution of igneous systems. We present an approach combining thermodynamic modeling of magma differentiation using Rhyolite-MELTS with chemical composition, temperature, pressure, and oxygen fugacity (X-T-P-fO2)-dependent partition coefficients (D) for

Retrouvez nos actualités

nos thèmes de recherche

Cosmochimie et Planétologie

Cycles, Atmosphère, Climats

Magmas
et Fluides Profonds

Tectonique, Érosion et Évolution du Relief

Nos instruments nationaux

LG-SIMS-Nancy

Sondes Ioniques

SARM

Service d’Analyse des Roches
et des Minéraux

nos plateformes instrumentales

Spectrométrie Gaz Rares

Isotopes Radiogéniques & Stables - Spectrométrie de Masse

Spectrométrie Isotopes Stables

Cosmochimie et Magmatologie Experimentales

Microscopie et microsonde électronique

Nos partenaires de formation

Nos RESEAUX & partenaires financiers

Les FEDER CRISTMAG et STEHLo sont cofinancés par l’Union européenne dans le cadre du Programme opérationnel FEDER-FSE Lorraine et Massif des Vosges 2014-2020.

nos thèmes de recherche

Cosmochimie et Planétologie

Cycles, Atmosphère, Climats

Magmas et Fluides Profonds

Tectonique, Érosion et Évolution du Relief

Nos instruments nationaux

LG-SIMS-Nancy

SARM

nos plateformes instrumentales

Spectrométrie Gaz Rares

Isotopes Radiogéniques & Stables - Spectrométrie de Masse

Spectrométrie Isotopes Stables

Cosmochimie et Magmatologie Experimentales

Microscopie et microsonde électronique

Nos partenaires de formation

Nos RESEAUX & partenaires financiers

Magmas
et Fluides Profonds