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
doaj +2 more sources
Ryugu and Bennu preserve primordial isotopic heterogeneity absent from the meteorite record [PDF]
Nature CommunicationsIvuna-type (CI) carbonaceous chondrites are commonly used as proxies for the composition of the planet-forming disk because their chemical abundances resemble those of the solar photosphere.
Martin Bizzarro +13 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
doaj +2 more sources
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
doaj +2 more sources
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
doaj +1 more source
Carbon Speciation and Solubility in Silicate Melts
Geophysical Monograph Series, Page 179-194., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Natalia Solomatova +2 more
wiley +5 more sources
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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Testing models for the compositions of chondrites and their components: I. CO chondrites
Geochimica et Cosmochimica Acta, 2021 Abstract We present the first results of a comprehensive investigation aimed at testing the hypothesis of chondrule-matrix complementarity and the four-component model for the compositions of the carbonaceous chondrites and their components. Combining point-counting with electron microprobe analyses, we have determined the bulk compositions of thin ...
Andrea Patzer +2 more
openaire +3 more sources
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 Osmium Isotope Signature of Phanerozoic Large Igneous Provinces
Geophysical Monograph Series, Page 229-246., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Alexander J. Dickson +2 more
wiley +2 more sources