The oxidation state of europium in silicate melts as a function of oxygen fugacity, composition and temperature

Burnham, Antony D.; Berry, Andrew J.; Halse, H.R.; Schofield, P. F.; Cibin, Giannantonio; Mosselmans, J. Frederick W.

doi:10.1016/j.chemgeo.2015.07.002

Cited by 89 publications

(55 citation statements)

References 46 publications

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“…The experiments of Burnham et al. () demonstrated that constant Eu 3+ /Eu total in silicate melts has a temperature dependence parallel to the quartz–fayalite–magnetite (QFM) buffer. Although the exact value of Eu 3+ /Eu total depended on melt composition in their experiments, the results suggest that relative changes in Eu 3+ /Eu total can be inferred from changes in f O 2 relative to QFM (for convenience, all mentions of f O 2 in the following paragraphs are relative to QFM).…”

Section: U–pb Laser‐ablation‐split‐stream Icp‐ms Monazite and Zircon supporting

confidence: 65%

“…We propose that changes in Eu/Eu* monazite could also be the result of changes in Eu 2+ /Eu 3+ , because of the difference in size and charge between Eu 2+ and Eu 3+ (Shannon, 1976). The experiments of Burnham et al (2015) (Burnham et al, 2015) and might explain the observed trends in Eu/Eu* monazite , but lack of a correlation between Eu/Eu* and Sr/Ca. See text for more details.…”

Section: Monazite Eu/eu* As a Record Of Changes In Oxidation Statementioning

confidence: 80%

“…(e) f O 2 decreases, then increases along the P–T path proposed in Figure a due to changes in mode and composition of spinel. Changes in f O 2 relative to QFM result in corresponding changes in Eu 3+ /Eu total rock (Burnham et al., ) and might explain the observed trends in Eu/Eu* monazite , but lack of a correlation between Eu/Eu* and Sr/Ca. See text for more details.…”

Section: U–pb Laser‐ablation‐split‐stream Icp‐ms Monazite and Zircon mentioning

confidence: 99%

“…The exact relationship between f O 2 , T and Eu 3+ /Eu total is not known for this type of rock; however, the experiments of Burnham et al. () on silicate melts suggest that one log 10 unit change in f O 2 is sufficient to change Eu 3+ /Eu total by 0.05–0.15 (higher f O 2 = higher Eu 3+ /Eu total ); this is similar to the total variation in monazite Eu/Eu* observed in sample 22H (0.12).…”

Section: U–pb Laser‐ablation‐split‐stream Icp‐ms Monazite and Zircon mentioning

confidence: 99%

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Ultrahigh‐temperature osumilite gneisses in southern Madagascar record combined heat advection and high rates of radiogenic heat production in a long‐lived high‐T orogen

Holder

Hacker

Horton

et al. 2018

Journal Metamorphic Geology

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We report the discovery of osumilite in ultrahigh‐temperature (UHT) metapelites of the Anosyen domain, southern Madagascar. The gneisses equilibrated at ~930°C/0.6 GPa. Monazite and zircon U–Pb dates record 80 Ma of metamorphism. Monazite compositional trends reflect the transition from prograde to retrograde metamorphism at 550 Ma. Eu anomalies in monazite reflect changes in fO2 relative to quartz–fayalite–magnetite related to the growth and breakdown of spinel. The ratio Gd/Yb in monazite records the growth and breakdown of garnet. High rates of radiogenic heat production were the primary control on metamorphic grade at the regional scale. The short duration of prograde metamorphism in the osumilite gneisses (<29 ± 8 Ma) suggests that a thin mantle lithosphere (<80 km) or advective heating may have also been important in the formation of this high‐T, low‐P terrane.

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Section: U–pb Laser‐ablation‐split‐stream Icp‐ms Monazite and Zircon supporting

confidence: 65%

Section: Monazite Eu/eu* As a Record Of Changes In Oxidation Statementioning

confidence: 80%

Section: U–pb Laser‐ablation‐split‐stream Icp‐ms Monazite and Zircon mentioning

confidence: 99%

Section: U–pb Laser‐ablation‐split‐stream Icp‐ms Monazite and Zircon mentioning

confidence: 99%

See 2 more Smart Citations

Ultrahigh‐temperature osumilite gneisses in southern Madagascar record combined heat advection and high rates of radiogenic heat production in a long‐lived high‐T orogen

Holder

Hacker

Horton

et al. 2018

Journal Metamorphic Geology

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“…Zircon Ce and Eu anomalies have been shown to vary as a function of magma oxidation state and the plagioclase sequestration, which may be leveraged to discriminate between geodynamic growth environments (Burnham & Berry, 2012;Loader et al, 2017;Trail et al, 2012). Lack of (or a positive) Eu anomaly may indicate zircon growth in absence of plagioclase (Burnham et al, 2015). In contrast, reducing conditions such as in rift zones tend to favor depleted Eu contents as Eu 2+ is excluded from the zircon lattice.…”

Section: Zircon U-pb (U-th)/he and Trace Element Analysismentioning

confidence: 99%

The Proto‐Zagros Foreland Basin in Lorestan, Western Iran: Insights From Multimineral Detrital Geothermochronometric and Trace Elemental Provenance Analysis

Barber

Stöckli

Galster

2019

Geochem Geophys Geosyst

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Detrital zircon (DZ) U‐Pb geochronology is a widely used provenance tool that leverages bedrock age signatures of hinterland source terranes. However, complex sediment recycling of multicycle zircon and hinterland provinces with nondiagnostic U‐Pb ages represent possible pitfalls for provenance reconstructions. Additional biases pertain to source rock zircon fertilities and insensitivity to low‐ and medium‐grade tectonothermal events that do not result in zircon generation. To bridge these inherent biases and gaps in DZ U‐Pb provenance data sets and derive more comprehensive tectonic reconstruction, this study combined U‐Pb and trace element analyses on DZ, apatite, and rutile as well as zircon (U‐Th)/He analyses from the Proto‐Zagros foreland basin in western Iran to shed light on Late Cretaceous tectonic accretion along Arabia. Integrated multimineral, multimethod data sets record formation of a 110‐ to 85‐Ma island arc within Triassic mid‐oceanic ridge crust of the Neotethys ocean, simultaneous obduction starting in Santonian‐Early Campanian times, and inversion of the Arabian rift margin. Overall, integration of these techniques constrains provenance based on multiple independent criteria including crystallization age, cooling history, and petrogenic‐geodynamic environment. This approach not only more completely described provenance signatures but also helped avoid significant pitfalls. For example, while Triassic DZ U‐Pb ages might be mistaken as input from Eurasia, zircon trace element analysis reveals a MORB signature and attributes these DZ to Neotethyan oceanic rather than Eurasian continental origin, having fundamentally different paleogeographic/tectonic implications for the Arabia‐Eurasia collision. Moreover, detrital rutile and apatite resolve and characterize multiple Paleozoic‐Mesozoic thermotectonic events not recorded by DZ U‐Pb due to their largely amagmatic nature.

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How to Measure the Oxidation State of Multivalent Elements in Minerals, Glasses, and Melts?

Neuville¹,

Cicconi²,

Losq³

2021

Geophysical Monograph Series

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The oxidation state of europium in silicate melts as a function of oxygen fugacity, composition and temperature

Cited by 89 publications

References 46 publications

Ultrahigh‐temperature osumilite gneisses in southern Madagascar record combined heat advection and high rates of radiogenic heat production in a long‐lived high‐T orogen

Ultrahigh‐temperature osumilite gneisses in southern Madagascar record combined heat advection and high rates of radiogenic heat production in a long‐lived high‐T orogen

The Proto‐Zagros Foreland Basin in Lorestan, Western Iran: Insights From Multimineral Detrital Geothermochronometric and Trace Elemental Provenance Analysis

How to Measure the Oxidation State of Multivalent Elements in Minerals, Glasses, and Melts?

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