The effect of alkalinity on Ni–O bond length in silicate glasses: Implications for Ni isotope geochemistry

Klaver, Martijn; Steenstra, E. S.; Borchert, Manuela; Welter, Edmund; Wilke, Max; Berndt, Jasper; Klemme, Stephan

doi:10.1016/j.chemgeo.2022.121070

Cited by 7 publications

(3 citation statements)

References 49 publications

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“…First, previous studies on both cratonic and orogenic peridotites suggest that fertile mantle peridotites have homogenous δ 60/58 Ni values of +0.10‰ ± 0.07‰ (Klaver et al., 2020; S.‐J. Wang et al., 2021), and normal mantle silicate melting produces a limited Ni isotope fractionation (Klaver et al., 2022; Sheng et al., 2022). Second, the largest Ni isotopic variations are seen in the evolved samples for both KI lavas and Kamchatka volcanic rocks, whereas the most primitive samples have invariant Ni isotopic compositions (Figures 2a and 2d).…”

Section: Discussionmentioning

confidence: 99%

“…Zhao et al., 2022), respectively. Given the limited Ni isotope fractionation during mantle silicate melting (Klaver et al., 2022; Sheng et al., 2022), we assume that initial basaltic magmas in all settings have an δ 60/58 Ni value of +0.05‰ ± 0.19‰ (2SD), the average of all published data of oceanic basalts (Cameron et al., 2009; Gueguen et al., 2013; Saunders et al., 2022; S.‐J. Wang et al., 2021).…”

Section: Discussionmentioning

confidence: 99%

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Nickel Isotope Fractionation During Magmatic Differentiation

Yang

Wang

Zhang

et al. 2023

Geochem Geophys Geosyst

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Earth differs from other terrestrial planets in having a thick andesitic continental crust (Rudnick & Gao, 2003). Magmatic differentiation plays an important role in changing the chemistry of mantle-derived mafic melts toward a more felsic composition. There are two important magmatic differentiation series on Earth, the iron-enriching tholeiitic series and the iron-depleting calc-alkaline series (Grove et al., 1992;Miyashiro, 1974). Magmatic differentiation at convergent margins leads to the formation of the primary building blocks of the continental crust (Keller et al., 2015;Rudnick, 1995). At continental convergent margins, iron-depleted magmas evolving along the calc-alkaline differentiation trend are compositionally distinct from the tholeiitic series produced within oceanic settings (Grove et al., 1992;Miyashiro, 1974).

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Nickel Isotope Fractionation During Magmatic Differentiation

Yang

Wang

Zhang

et al. 2023

Geochem Geophys Geosyst

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“…S4] reflect the involvement of sulfides and/or alloys, these PGE variations and absolute PGE abundances (fig. S7) are not associated with limited change of δ 60 Ni values, still suggesting that no process such as incongruent melting, immiscibility, crystallization, or metasomatism of sulfides (44,47,48,50) has effectively affected the Ni isotopic compositions of the NUB peridotites. Although samples 208191 and 208196 have a few visible pentlandites (fig.…”

Section: Nickel Isotopic Composition Of the Nub Mantle Sourcementioning

confidence: 95%

Ni isotopes provide a glimpse of Earth’s pre-late-veneer mantle

Xu,

Szilas,

Zhang

et al. 2023

Sci. Adv.

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Moderately siderophile (e.g., Ni) and highly siderophile elements (HSEs) in the bulk silicate Earth (BSE) are believed to be partly or near-completely delivered by late accretion after the depletion caused by metallic core formation. However, the extent and rate of remixing of late-accreted materials that equilibrated with Earth’s pre-late-veneer mantle have long been debated. Observing evidence of this siderophile element-depleted pre-late-veneer mantle would provide powerful confirmation of this model of early mantle evolution. We find that the mantle source of the ~3.8-billion-year-old (Ga) Narssaq ultramafic cumulates from Southwest Greenland exhibits a subtle 60 Ni/ 58 Ni excess of ~0.05 per mil and contains a clear HSE deficiency of ~60% relative to the BSE. The intermediate Ni isotopic composition and HSE abundances of the ~3.8-Ga Narssaq mantle mark a transitional Eoarchean snapshot as the poorly mixed 3.8-Ga mantle containing elements of pre-late-veneer mantle material transitions to modern Earth’s mantle.

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Mass-dependent nickel isotopic variations in achondrites and lunar rocks

Wang

Lin

et al. 2023

Geochimica et Cosmochimica Acta

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The effect of alkalinity on Ni–O bond length in silicate glasses: Implications for Ni isotope geochemistry

Cited by 7 publications

References 49 publications

Nickel Isotope Fractionation During Magmatic Differentiation

Nickel Isotope Fractionation During Magmatic Differentiation

Ni isotopes provide a glimpse of Earth’s pre-late-veneer mantle

Mass-dependent nickel isotopic variations in achondrites and lunar rocks

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