Chromium isotopic insights into the origin of chondrite parent bodies and the early terrestrial volatile depletion

Zhu, Ke; Moynier, Frédéric; Schiller, Martin; Alexander, C. M. O'd.; Davidson, J.; Schrader, D. L.; Kooten, Elishevah M.M.E. van; Bizzarro, Martin

doi:10.1016/j.gca.2021.02.031

Cited by 46 publications

(98 citation statements)

References 139 publications

(402 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Model ages are calculated relative to the CAI formation age of 4567.18 ± 0.50 Ma (Amelin et al, 2010) assuming an OC chondritic 55 Mn/ 52 Cr = 0.74 (Zhu et al, 2021), a solar system initial ε 53 Cr = −0.23 and a canonical 53 Mn/ 55 Mn = 6.28 × 10 −6 (Trinquier et al, 2008) (Fig. 1).…”

Section: Resultsmentioning

confidence: 99%

“…assume a Mn/Cr for the source reservoir that is represented by the average Mn/Cr of OCs. Ordinary chondrites have a CI-like Mn/Cr (e.g., Wasson and Allemeyn, 1988;Zhu et al, 2021) and alongside the investigated magmatic iron meteorite groups, belong to the 'non-carbonaceous' reservoir (Kleine et al, 2020). The effect of different Mn/Cr of the iron meteorite parent bodies and the assumption of different initial ε 53 Cr is shown in Figure S-2.…”

Section: Discussionmentioning

confidence: 99%

“…Another powerful tool to constrain the time and duration of early solar system processes, including accretion, differentiation, metamorphism and subsequent cooling could be the short lived 53 Mn-53 Cr chronometer (t 1/2 = 3.7 ± 0.4 Ma; Honda and Imamura, 1971) (e.g., Shukolyukov and Lugmair, 2006;Trinquier et al, 2008;Göpel et al, 2015;Zhu et al, 2021). Chromite (FeCr 2 O 4 ) and daubréelite (FeCr 2 S 4 ) are the two main carrier phases of Cr in magmatic iron meteorites.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Early differentiation of magmatic iron meteorite parent bodies from Mn–Cr chronometry

Anand¹,

Pape²,

Wille³

et al. 2021

Geochem. Persp. Let.

View full text Add to dashboard Cite

Magmatic iron meteorite groups such as IIAB, IIIAB and IVA, represent the largest sampling of extraterrestrial core material from the earliest accreted distinct planetary bodies in the solar system. Chromium isotope compositions of chromite/daubréelite from seven samples, translated into 53 Cr/ 52 Cr model ages, provide robust time information on planetary core formation. These ages are within ∼1.5 Ma after formation of calcium-aluminium-rich inclusions (CAIs) and define the time of metal core formation in the respective parent bodies, assuming metal-silicate separation was an instantaneous event that induced strong chemical fractionation of Mn from the more siderophile Cr. The early core formation ages support accretion and differentiation of the magmatic iron meteorite parent bodies to have occurred prior to the chondrule formation interval. The calibration of Mn-Cr ages with established Hf-W ages of samples from the same magmatic iron meteorite groups constrains the initial ε 53 Cr of the solar system to −0.30 ± 0.05, and thus lower than previously estimated.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Early differentiation of magmatic iron meteorite parent bodies from Mn–Cr chronometry

Anand¹,

Pape²,

Wille³

et al. 2021

Geochem. Persp. Let.

View full text Add to dashboard Cite

show abstract

“…This hypothesis could be further tested, for example, via measuring the Ni stable isotope composition of aubrites and lunar samples. Alternatively, the inconsistent Ni isotopes between Earth and chondrites can simply indicate that Earth is not directly made by known bulk chondrites, which is also suggested by the recent radiogenic Cr isotopic ( 53 Mn‐to‐ 53 Cr decay system, with a half‐life of 3.7 Ma) difference between Earth and chondrites (Zhu, Moynier, Schiller, Alexander, Davidson, et al., 2021). The Ni isotope compositions of chondrules deserve to be studied, since the pebble accretion model supports that chondrules can contribute to the accretional material of terrestrial planets (Johansen et al., 2015); especially the chondrules from enstatite chondrites that have similar isotope compositions of multiple elements as Earth's materials (Clayton et al., 1984; Steele et al., 2012; Trinquier et al., 2007; Zhu, Moynier, Schiller, & Bizzarro, 2020).…”

Section: Discussionmentioning

confidence: 99%

Nickel and Chromium Stable Isotopic Composition of Ureilites: Implications for the Earth's Core Formation and Differentiation of the Ureilite Parent Body

Zhu

Barrat

Yamaguchi

et al. 2022

Geophysical Research Letters

Self Cite

View full text Add to dashboard Cite

We report the first Ni and Cr stable isotope data for ureilite meteorites that are the mantle residue of a carbon‐rich differentiated planet. Ureilites have similar Ni stable isotope compositions as chondrites, suggesting that the core‐mantle differentiation of ureilite parent body (UPB) did not fractionate Ni isotopes. Since the size of Earth is potentially larger than that of UPB; with diameter >690 km), resulting in higher temperatures at the core‐mantle boundary of Earth, it can be predicted that the terrestrial core formation may not directly cause Ni stable isotope fractionation. On the other hand, we also report high‐precision Cr stable isotope composition of ureilites, including one ureilitic trachyandesite (ALM‐A) that is enriched in lighter Cr stable isotopes relative to the main‐group ureilites, which suggests that the partial melting occurred on UPB. The globally heavy Cr in the UPB compared to chondrites can be caused by sulfur‐rich core formation processes.

show abstract

“…for individual measurements and two-sided Student's t-values 95% confidence intervals for martian mantle average. (20,22,53), updated with recent publications (9,23,42,47,52,(54)(55)(56)(57)(58)(59)(60)(61)(62).…”

Section: Supplementary Materials Figures S1 To S3mentioning

confidence: 99%

Terrestrial planet formation from lost inner solar system material

et al. 2021

View full text Add to dashboard Cite

show abstract

Chromium isotopic insights into the origin of chondrite parent bodies and the early terrestrial volatile depletion

Cited by 46 publications

References 139 publications

Early differentiation of magmatic iron meteorite parent bodies from Mn–Cr chronometry

Early differentiation of magmatic iron meteorite parent bodies from Mn–Cr chronometry

Nickel and Chromium Stable Isotopic Composition of Ureilites: Implications for the Earth's Core Formation and Differentiation of the Ureilite Parent Body

Terrestrial planet formation from lost inner solar system material

Contact Info

Product

Resources

About