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Reply to "Oxygen isotope heterogeneity of the mantle beneath the Canary Islands: a discussion of the paper of Gurenko et al."

Abstract : The comment by Day et al. (Contrib Mineral Petrol, 2012) (1) discusses the validity of the previously obtained oxygen isotope data for El Hierro and La Palma (Canary Island) olivines, (2) questions the approach by Gurenko et al. (Contrib Mineral Petrol 162:349-363, 2011) of using weakly correlated variations of δ18Oolivine values with X px (proportion of pyroxenite-derived melt in the parental magma), and (3) provides reasons why oxygen isotope data by secondary ion mass spectrometry (SIMS) "offer sensitive means for detecting melt-crust interactions." We respond these comments and report a new set of oxygen isotope measurements performed by SIMS and single-grain laser fluorination methods. These measurements confirm our previous data and conclusions and demonstrate the ability of the SIMS technique to analyze O isotopes in terrestrial samples with 2-sigma uncertainty better than ±0.25 ‰.
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Submitted on : Friday, March 25, 2022 - 9:11:02 AM
Last modification on : Saturday, March 26, 2022 - 4:12:11 AM

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Andrey A. Gurenko, Ilya N. Bindeman, Marc Chaussidon. Reply to "Oxygen isotope heterogeneity of the mantle beneath the Canary Islands: a discussion of the paper of Gurenko et al.". Contributions to Mineralogy and Petrology, 2012, 164, pp.185-189. ⟨10.1007/s00410-012-0756-2⟩. ⟨insu-03619309⟩

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