Determination of Fe3+/ΣFe of XANES basaltic glass standards by Mössbauer spectroscopy and its application to the oxidation state of iron in MORB
TLDR
In this paper, the effect of recoilless fraction on the apparent Fe3+/ΣFe ratio measured from room temperature Mossbauer spectra was taken into account.About:
This article is published in Chemical Geology.The article was published on 2018-02-20 and is currently open access. It has received 96 citations till now.read more
Citations
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The oxidation state of iron in Mid-Ocean Ridge Basaltic (MORB) glasses: Implications for their petrogenesis and oxygen fugacities
TL;DR: In this paper, the authors used XANES spectroscopy of a globally representative sample of these MORB glasses to determine the average valence state of Fe in its quenched glass.
Journal ArticleDOI
Carbon Fluxes and Primary Magma CO2 Contents Along the Global Mid-Ocean Ridge System
Marion Le Voyer,Marion Le Voyer,Erik H. Hauri,Elizabeth Cottrell,Katherine A. Kelley,Vincent J. M. Salters,Charles H. Langmuir,David R. Hilton,Peter H. Barry,Evelyn Füri +9 more
TL;DR: In this paper, the concentration of carbon in primary mid-ocean ridge basalts (MORBs), and the associated fluxes of CO2 outgassed at ocean ridges, is examined through new data obtained by secondary ion mass spectrometry (SIMS) on 753 globally distributed MORB glasses.
Journal ArticleDOI
Mantle plumes are oxidised
Yves Moussallam,Yves Moussallam,Marc-Antoine Longpré,Catherine McCammon,Alejandra Gómez-Ulla,Estelle Rose-Koga,Bruno Scaillet,Nial Peters,Emanuela Gennaro,Raphaël Paris,Clive Oppenheimer +10 more
TL;DR: In this paper, the redox state of glassy crystal-hosted melt inclusions from tephra and quenched lava samples from the Canary and Cape Verde Islands was investigated.
Journal ArticleDOI
A Mössbauer-based XANES calibration for hydrous basalt glasses reveals radiation-induced oxidation of Fe
Elizabeth Cottrell,Antonio Lanzirotti,Bjorn O. Mysen,Suzanne K. Birner,Suzanne K. Birner,Katherine A. Kelley,Roman E. Botcharnikov,F. A. Davis,F. A. Davis,Matthew Newville +9 more
TL;DR: In this paper, the authors show that synchrotron radiation causes progressive changes to the XANES spectra of hydrous glasses as a function of radiation dose (here defined as total photons delivered per square micrometer), water concentration and initial Fe3+/ΣFe ratio.
References
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A survey of cross-validation procedures for model selection
Sylvain Arlot,Alain Celisse +1 more
TL;DR: This survey intends to relate the model selection performances of cross-validation procedures to the most recent advances of model selection theory, with a particular emphasis on distinguishing empirical statements from rigorous theoretical results.
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A survey of cross-validation procedures for model selection
Sylvain Arlot,Alain Celisse +1 more
TL;DR: In this paper, a survey on the model selection performances of cross-validation procedures is presented, with a particular emphasis on distinguishing empirical statements from rigorous theoretical results, and guidelines are provided for choosing the best crossvalidation procedure according to the particular features of the problem in hand.
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The compressibility of silicate liquids containing Fe 2 O 3 and the effect of composition, temperature, oxygen fugacity and pressure on their redox states
TL;DR: In this paper, the authors extended the empirical expression of Sack et al. to allow the calculation of Fe-redox equilibrium in a natural silicate liquid as a function of composition, temperature, fo2 and pressure; a more formal thermodynamic expression is presented in the Appendix.
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The Redox State of Earth's Mantle
TL;DR: In this article, the upper mantle oxygen fugacity at the top of the spinel peridotite rocks is shown to fall within 2 log units of the fayalite-magnetite-quartz (FMQ) oxygen buffer.
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Water and the Oxidation State of Subduction Zone Magmas
TL;DR: Integrated measurements of redox-sensitive ratios of oxidized iron to total iron (Fe3+/ΣFe) determined with Fe K-edge micro–x-ray absorption near-edge structure spectroscopy and pre-eruptive magmatic H2O contents of a global sampling of primitive undegassed basaltic glasses and melt inclusions indicate a direct link between mass transfer from the subducted plate and oxidation of the mantle wedge.
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