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461
Complex Brines and Their Implications for Habitability
Published 2021-08-01“…Earth, Mars, and carbonaceous chondrites have similar bulk elemental abundances, but while the Earth is depleted in the most volatile elements, the Icy Worlds of the outer solar system are expected to be rich in them. …”
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462
The Lithophile Element Budget of Earth's Core
Published 2022-02-01“…To match Earth's core mass and mantle composition, Earth's building blocks must have been enriched in Fe and depleted in Si compared with CI chondrites. Finally, too little Mg, Si, and O are partitioned into the core for precipitation of oxides to be a major source of energy for the geodynamo. …”
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463
GEÇ EOSEN YAŞLI BİRİMLERİN İZ FOSİL TOPLULUKLARI VE ORTAMSAL YORUMU (GB TRAKYA)
Published 2008-05-01“…Bu iknotaksonlardan; Ophiomorpha isp, Ophiomorpha annulata, Ophiomorpha rudis, Thalassinoides isp, Planolites isp, Halopoa annulata, Rutichnius isp, Chondrites isp, Scolicia vertebralis, Scolicia strozzii, Scolicia prisca, Scolicia plana, Nereites irregularis, Helminthopsis isp, Cosmorhaphe isp, Helminthoidichnites isp, Paleodictyon strozzii orta yelpaze-yelpaze ilerisi Korudag Formasyonu' nu, Ophiomorpha isp, Ophiomorpha annulata, Ophiomorpha rudis, Thalassinoides isp, Planolites isp, Halopoa annulata Zoophycos isp, iç yelpaze Keşan Formaasyonu'nu, Lockeia isp, ve Planolites isp. ise delta çökeli özelliginde Yenimuhacir Formasyonu' nun ayrimini saglamiştir. …”
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464
Vanadium and zinc isotope ratios in lunar basalts
Published 2019“…Where published meteorite data is available, accounting for cosmogenic exposure shows no resolvable difference between the BSE, Mars, Moon, and chondrites, in contrast to earlier studies.</p> <p>Zinc displays a large isotopic range (~10‰) even amongst samples of the same lithological subtype, likely reflecting the volatile behaviour of zinc. …”
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465
Resolving crystallisation ages of Archean mafic-ultramafic rocks using the Re-Os isotope system
Published 2000“…The initial 187Os/188Os isotope ratio of 0.10940 ± 0.00076 indicates that such material possessed a chondritic Os isotope composition, which suggests that these rocks were formed by direct melting of mantle material, consistent with major and trace element constraints on their formation. …”
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466
The Characteristics and Tectonic Significance of Ordovician Siliceous Rocks in the Yushigou Area, North Qilian
Published 2014-09-01“…The results show that the mean ratio of Al/(Al+Fe+Mn) is 0.56 and 0.60, Al/(Al+Fe) is 0.57 and 0.61, (La/Yb)SN is 0.89 and 1.2, δCeSN is 0.88 and 0.93 and δEuSN is 1.15 and 1.08, for samples collected from two sites at Yushigou, respectively. Chondritic Standardized REEs distribution plot is a LREEs enrichment pattern which shows an outstanding rightward decreasing tendency. …”
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467
The Characteristics and Tectonic Significance of Ordovician Siliceous Rocks in the Yushigou Area, North Qilian
Published 2014-09-01“…The results show that the mean ratio of Al/(Al+Fe+Mn) is 0.56 and 0.60, Al/(Al+Fe) is 0.57 and 0.61, (La/Yb)SN is 0.89 and 1.2, δCeSN is 0.88 and 0.93 and δEuSN is 1.15 and 1.08, for samples collected from two sites at Yushigou, respectively. Chondritic Standardized REEs distribution plot is a LREEs enrichment pattern which shows an outstanding rightward decreasing tendency. …”
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468
Observations, Meteorites, and Models: A Preflight Assessment of the Composition and Formation of (16) Psyche
Published 2021“…Though their density is similar, mesosiderites are an unlikely analog to bulk Psyche because mesosiderites have far more iron-rich silicates than Psyche appears to have. CB chondrites match both Psyche's density and spectral properties, as can some pallasites, although typical pallasitic olivine contains too much iron to be consistent with the reflectance spectra. …”
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469
Evolution of the 3.65–2.58 Ga Mairi Gneiss Complex, Brazil: Implications for growth of the continental crust in the São Francisco Craton
Published 2022-09-01“…In the Eoarchean, rocks are probably formed by the interaction between the pre-existing crust and juvenile contribution from chondritic to weakly depleted mantle sources, whereas mantle depletion played a role in the Paleoarchean, followed by greater differentiation of the crust with thickening and recycling in the middle–late Paleoarchean. …”
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470
A new cache of Eoarchaean detrital zircons from the Singhbhum craton, eastern India and constraints on early Earth geodynamics
Published 2019-07-01“…We observe a prominent shift in Hf isotope compositions at ∼3.6–3.5 Ga towards super-chondritic values, which signify an increased role for depleted mantle and the relevance of plate tectonics. …”
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471
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472
The unexpected surface of asteroid (101955) Bennu
Published 2020“…Bennu is a low-albedo B-type asteroid that has been linked to organic-rich hydrated carbonaceous chondrites. Such meteorites are altered by ejection from their parent body and contaminated by atmospheric entry and terrestrial microbes. …”
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473
The condensation temperatures of the elements: A reappraisal
Published 2019“…Second, recent measurements of the halogen contents of CI chondrites (<a>Clay et al. 2017</a>) indicate that the solar system abundance of chlorine is significantly overestimated, and this affects the stabilities of gaseous complexes of many elements of interest. …”
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474
Nb and Ta intracrustal differentiation during granulite-facies metamorphism: evidence from geochemical data of natural rocks and thermodynamic modeling
Published 2022“…High-Temperature (HT) and ultrahigh-Temperature (UHT) granulite residues exhibit Nb/Ta ratios that are close to chondritic and subchondritic, respectively, whereas leucosomes from UHT granulite mostly have suprachondritic Nb/Ta. …”
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475
The unexpected surface of asteroid (101955) Bennu
Published 2019“…Bennu is a low-albedo B-type asteroid2 that has been linked to organic-rich hydrated carbonaceous chondrites3. Such meteorites are altered by ejection from their parent body and contaminated by atmospheric entry and terrestrial microbes. …”
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476
Kinetic isotope effect during reduction of iron from a silicate melt
Published 2006“…Iron isotopic compositions measured in chondrules from various chondrites vary between δ 57Fe/ 54Fe = +0.9‰ and -2.0‰, a larger range than for igneous rocks. …”
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477
Carbon in the core
Published 1993“…Carbon is extremely abundant in the solar system (10 × Si, 20 × S) in Cl carbonaceous chondrites (3.2 wt%) and it dissolves readily in liquid Fe at low pressures (4.3 wt% at 1420 K). …”
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478
Geochemical Conditions and Factors Controlling the Distribution of Major, Trace, and Rare Elements in Sul Hamed Granitic Rocks, Southeastern Desert, Egypt
Published 2022-09-01“…This was confirmed by calculating the ratios of most isovalents that deviated from the chondritic ratio in many values. Variation diagrams of U and some trace elements illustrated that U had a weak positive correlation with Y and a strong positive correlation with gold, while it had weak to moderate negative correlation with Hf and Zr/U. …”
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479
Outgassing Composition of the Murchison Meteorite: Implications for Volatile Depletion of Planetesimals and Interior-atmosphere Connections for Terrestrial Exoplanets
Published 2023-01-01“…One way to inform this connection is to analyze the outgassing compositions of meteorites, and in particular carbonaceous chondrites, because they are some of the most volatile-rich, primitive materials (in terms of their bulk compositions) that are available for direct study. …”
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480
Comprehensive report of the BELARE 2022-2023 meteorite reconnaissance expedition in the Sør Rondane area, East Antarctica
Published 2023-12-01“…Preliminary classification, performed on-site using magnetic susceptibility, tentatively indicated H and L chondrites. The recovered meteorites were transported in frozen state to the Royal Belgian Institute of Natural Sciences in Brussels to be thawed in vacuum conditions and classified based on their mineralogy. …”
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