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Showing 1–4 of 4 results
Advanced filters: Author: Mathieu Roskosz Clear advanced filters

  • The insoluble organic matter in primitive carbonaceous chondrites has a systematic large enrichment in deuterium and several hypotheses have been proposed to explain this. Here, the authors demonstrate that irradiation from the protosun could quantitatively explain the deuteration.

    • Boris Laurent
    • Mathieu Roskosz
    • Jean-Marc Lefebvre
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-6

  • The complex collisional history of shocked L chondrites is reconstructed by combining high-pressure mineralogy, geochemistry, geochronology and orbital data. The results show that those meteorites arrive on Earth from over three distinct asteroid families.

    • Marine Ciocco
    • Mathieu Roskosz
    • Matthieu Gounelle
    Research
    Nature Astronomy
    Volume: 9, P: 1455-1463

  • Terrestrial basalts have a unique iron isotopic signature taken as fingerprints of core formation. Here, high pressure studies show that force constants of iron bonds increase with pressure similarly for silicate and metals suggesting interplanetary isotopic variability is not due to core formation.

    • Jin Liu
    • Nicolas Dauphas
    • Jung-Fu Lin
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-6

  • The abundances of isotopes in presolar grains are presumed to reflect their nucleosynthetic generation in stars. However, here Robert et al. report experimentally detected evidence of mass-independent fractionation of titanium, implying that titanium isotopic abundances in presolar grains may not be as representative as once thought.

    • François Robert
    • Romain Tartèse
    • Marc Chaussidon
    Research
    Nature Astronomy
    Volume: 4, P: 762-768