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Formation conditions and chemical composition of early-condensed olivine in the solar protoplanetary disk

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Formation conditions and chemical composition of early-condensed olivine in the solar protoplanetary disk

Elian Ochem , Yves Marrocchi Icarus 445, 116859, 10.1016/j.icarus.2025.116859 Voir en ligne : https://doi.org/10.1016/j.icarus.2025.116859 The dynamic evolution of the solar protoplanetary disk led to the formation of the first solar system solids by condensation, among which amoeboid olivine aggregates (AOAs) are the most abundant. The conditions under which AOAs formed remain poorly constrained, with both equilibrium

Characterization of the HIMU Mantle Source from Noble Gas Isotopes in Volcanic Gas Emissions in São Tomé (Cameroon Volcanic Line)

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Characterization of the HIMU Mantle Source from Noble Gas Isotopes in Volcanic Gas Emissions in São Tomé (Cameroon Volcanic Line)

Arno Lastes, David V. Bekaert, Bouchaib Tibari, Alan M. Seltzer, Michael W. Broadley, Peter H. Barry, and Bernard Marty CS Earth and Space Chemistry special issue “Reika Yokochi Memorial” Voir en ligne : https://pubs.acs.org/doi/10.1021/acsearthspacechem.5c00056?ref=pdf The source of volcanism in the Cameroon volcanic line remains unresolved. To better constrain the mantle components involved, we measure light noble

Early Archaean onset of volatile cycling at subduction zones

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Early Archaean onset of volatile cycling at subduction zones

G. Caro, T. Grocolas, P. Bourgeois, P. Bouilhol, S. J. Mojzsis, G. Paris. Nature Geoscience volume 18, pages 436–442 (2025) Voir en ligne : https://doi.org/10.1038/s41561-025-01677-5 Abstract: The subduction of pelagic sediments and altered oceanic crust modulates the global cycle of volatile elements. Sulfate and carbonate fluids released when one plate descends beneath another modify the

Advances in Igneous Petrology: Coupling Chemical Maps with Thermodynamic Models to Tackle Mush Crystallization Dynamics and Crystal–Melt Segregation

Thème Magmas Fluides Profonds

Advances in Igneous Petrology: Coupling Chemical Maps with Thermodynamic Models to Tackle Mush Crystallization Dynamics and Crystal–Melt Segregation

Lydéric France , Valentine Charvet , Aurore Toussaint Journal of Petrology, Volume 66, Issue 5, May 2025, egaf044 Voir en ligne : https://doi.org/10.1093/petrology/egaf044 Abstract: Chemical maps of igneous samples contain prodigious information constraining the evolution and solidification of magmas and mushy systems. Nevertheless, their full potential remains unrealized; they are mostly used only to highlight

The extraterrestrial dust accretion rate on Earth at Dome C, Antarctica: a fresh look with 3He

Dernières publications

The extraterrestrial dust accretion rate on Earth at Dome C, Antarctica: a fresh look with 3He

G. Fénisse, D.V. Bekaert, P.-H. Blard, J. Duprat, I. Mattia, M. Genge, M.D. Suttle, O. Barres, C. Engrand, Y. Marrocchi. Earth and Planetary Science Letters Volume 663, 1 August 2025, 119396 Voir en ligne :https://doi.org/10.1016/j.epsl.2025.119396 Abstract: Interplanetary dust particles (IDPs) and micrometeorites (MMs), from 1 µm to 5 mm, are the primary source of extraterrestrial

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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.

Our research themes

Cosmochemistry and Planetology

Cycles, Atmosphere, Climates

Magmas and Deep Fluids

Tectonics, Erosion and the Evolution of Relief

OUR NATIONAL FACILITIES

LG-SIMS-Nancy

SARM

Our instrumental Facilities

Noble gas mass spectrometry

Radiogenic & Stable isotopes - Mass Spectrometry

Stable isotopes mass spectrometry

Experimental Cosmochemistry and Magmatology

Scanning electron microscope and microprobe

OUR EDUCATIONAL PARTNERS

OUR NETWORKS & FINANCIAL PARTNERS

Magmas
and Deep Fluids