Regolith thickness across the Borealis Planitia region of Mercury

Joulaud M., Allemand P., Flahaut J., Füri E. Planetary and Space Science, Article n°106338, Volume 282, November 2026 Voir en ligne : https://doi.org/10.1016/j.pss.2026.106338 Mercury's surface is covered by regolith produced by meteoritic bombardment, recording the planet's impact and geological history.…

Comments Off on Regolith thickness across the Borealis Planitia region of Mercury

Geology of Atlas crater, the prime landing site of the Emirates Lunar Mission Rashid-1 rover

Flahaut J., Wöhler C., Joulaud M., Füri E., Bhatt M., Breton S., Els S. G., AlMaeeni S., AlMarzooqi H. and the ELM Science Collaboration (2026) Planetary Research, Vol. 1 No. 1, August 2026 Voir en ligne : https://doi.org/10.53480/4e7a-4y94 Located at…

Comments Off on Geology of Atlas crater, the prime landing site of the Emirates Lunar Mission Rashid-1 rover

H-N budgets and isotopic signatures of Oued Chebeika 002 and CI reservoir heterogeneity

Marrocchi Y., Füri E., Zimmermann L. & Piani L. Geochemical Perspective Letters, 39, 7-11, 10.7185/geochemlet.2605 Voir en ligne : https://doi.org/10.7185/geochemlet.2605 We report the hydrogen (H) and nitrogen (N) elemental and isotopic compositions of the recently recovered CI chondrite Oued Chebeika 002…

Comments Off on H-N budgets and isotopic signatures of Oued Chebeika 002 and CI reservoir heterogeneity

Oxygen isotope compositions of chondrules in enstatite chondrites: insights from relict olivine, chondrule size and redox state

Marrocchi Y., Piani L., Thomassin D. & Jacquet E. (2026) Geochimica et Cosmochimica Acta 414, 62-74, 10.1016/j.gca.2025.12.036 Voir en ligne : https://doi.org/10.1016/j.gca.2025.12.036  The recent discovery in ordinary chondrites of a population of small, sub-TFL (i.e., negative Δ17O; TFL = Terrestrial Fractionation…

Comments Off on Oxygen isotope compositions of chondrules in enstatite chondrites: insights from relict olivine, chondrule size and redox state

Origin of the mass-dependent germanium isotopic continuum in the early Solar System

Béatrice Luais, Guillaume Florin Earth and Planetary Science Letters, 672, 119663 Voir en ligne : https://doi.org/10.1016/j.epsl.2025.119663 The warm, reduced, volatile-poor inner Solar System and cold, oxidized, volatile-rich outer Solar System are characterized by neutron-poor and neutron-rich isotopic anomalies, respectively. Nucleosynthetic isotopic…

Comments Off on Origin of the mass-dependent germanium isotopic continuum in the early Solar System
Bandeau 110 soleil
Bandeau 110 soleil

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…

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

Clues for Solar System Formation from Meteorites and Their Parent Bodies

Bernard Marty, Katherine R. Bermingham, Larry R. Nittler, Sean N. Raymond Comets III (K. J. Meech, M. R. Combi, D. Bockelée-Morvan, S. N. Raymond, and M. E. Zolensky, eds.), pp. 681–729 Voir en ligne : https://arxiv.org/abs/2506.02721 Understanding the origin of comets…

Comments Off on Clues for Solar System Formation from Meteorites and Their Parent Bodies

Performance of the 3F4M Noblesse–HR Noble Gas Mass Spectrometer for Multicollection Ne‐Ar‐N2 Analyses

L. Zimmermann , E. Füri , J. Boulliung, and J. M. Saxton Geochemistry, Geophysics, Geosystems - METHOD 10.1029/2025GC012247 Voir en ligne : https://doi.org/10.1029/2025GC012247 The Noblesse–HR noble gas mass spectrometer was designed for multicollection analyses of different sets of noble gas isotopes…

Comments Off on Performance of the 3F4M Noblesse–HR Noble Gas Mass Spectrometer for Multicollection Ne‐Ar‐N2 Analyses

Porphyritic olivine chondrules with enstatite chondrite isotopic composition as a main building block of Earth

Marrocchi Y., Hammouda T., Boyet M., Avice G. & Morbidelli A. Earth and Planetary Science Letters, Volume 659, 1 June 2025, 119337 Voir en ligne : https://www.sciencedirect.com/science/article/abs/pii/S0012821X25001360 Abstract: The nature and origin of the Earth’s building blocks remain intensely debated.…

Comments Off on Porphyritic olivine chondrules with enstatite chondrite isotopic composition as a main building block of Earth