Bubbles to Chondrites-II. Chemical fractionations in chondrites [PDF]
Progress in Earth and Planetary Science, 2021 We attempt to develop a possible theory of chemical fractionations in chondrites, that is consistent with various features of chondritic components and current observation of protoplanetary disks (PPD).
Akihiko Hashimoto, Yuki Nakano
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Middle Jurassic Zoophycos and Chondrites from the Mélah Formation of Saharan Atlas, Algeria [PDF]
Estonian Journal of Earth Sciences, 2019 The ichnogenera Zoophycos and Chondrites are described for the first time from the Middle Jurassic of Algeria. The trace fossil assemblage recovered from the Mélah Formation contains seven ichnospecies (Chondrites targionii, C.
Fayçal Mekki +8 more
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Impact-induced sublimation drives volatile depletion in carbonaceous meteorites [PDF]
Nature CommunicationsCarbonaceous chondrites are amongst the most chemically primitive solid materials in the Solar System, yet many are depleted in moderately volatile elements.
Zheng-Yu Long +11 more
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Impact-driven oxidation of organics explains chondrite shock metamorphism dichotomy [PDF]
Nature CommunicationsShocked meteorites can be used to probe the dynamics of the early Solar system. Carbonaceous chondrites are less shocked than ordinary chondrites, regardless of the degree of aqueous alteration.
Kosuke Kurosawa +5 more
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A glimpse into ancient food storage: Sequestrichnia and associated nucleocave Chondrites from Eocene deep-sea deposits [PDF]
Acta Palaeontologica Polonica, 2022 The old brickyard Velká nad Veličkou in the Czech Republic offers a unique insight into an Eocene deep-sea ichnoassemblage that is dominated by sequestrichnia.
JAROSLAV ŠAMÁNEK +3 more
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The message of oldhamites from enstatite chondrites
Progress in Earth and Planetary Science, 2022 We have determined rare-earth element (REE) abundances in oldhamites (CaS) from 13 unequilibrated and equilibrated enstatite chondrites (5 EH and 8 EL) and in a few enstatites by in situ, laser ablation ICP-MS.
Tahar Hammouda +3 more
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Composite Phymatoderma from Neogene deep-marine deposits in Japan: Implications for Phanerozoic benthic interactions between burrows and the trace-makers of Chondrites and Phycosiphon [PDF]
Acta Palaeontologica Polonica, 2015 Among composite trace fossils, one of the most common structures throughout the Phanerozoic are structures (e.g., dwelling trace, feeding trace) reworked by Chondrites and/or Phycosiphon.
Kentaro Izumi
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The Planetary Science Journal, 2023 Remote spectral characterization of near-Earth asteroids (NEAs) relies on laboratory spectral calibration to constrain their surface composition, including mineral chemistry and relative mineral abundances.
Bryn Bowen +10 more
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Possible Ribose Synthesis in Carbonaceous Planetesimals
Life, 2022 The origin of life might be sparked by the polymerization of the first RNA molecules in Darwinian ponds during wet-dry cycles. The key life-building block ribose was found in carbonaceous chondrites.
Klaus Paschek +7 more
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Hydrogen Isotopic Composition of Hydrous Minerals in Asteroid Ryugu
The Astrophysical Journal Letters, 2023 Rock fragments of the Cb-type asteroid Ryugu returned to Earth by the JAXA Hayabusa2 mission share mineralogical, chemical, and isotopic properties with the Ivuna-type (CI) carbonaceous chondrites.
Laurette Piani +87 more
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