Skip to Main content Skip to Navigation
Journal articles

Quantifying magmatic volatiles by Raman microtomography of glass inclusion-hosted bubbles

Abstract : We present a novel application of Raman microtomography for quantitative characterisation of glass inclusion-hosted bubbles, which allows for the simultaneous identification and volumetric quantification of mineral and fluid phases filling the bubble. The combination of Raman microtomography with synchrotron XRF mapping and scanning electron microscopy provides a complete compositional and textural characterisation of the bubble. In the studied samples, minerals are systematically present on the walls of the bubbles: dominantly carbonates in samples from continental intraplate and hotspot volcanic provinces, and sulfates in the sample from subductionrelated settings. Along with fluid CO 2 , carbonates sequester 65 to 84 % of the CO 2 originally dissolved in the melt, while 18 to 60 % of the sulfur contained in the inclusion is stored in sulfides and/or sulfates. Thus, the total melt inclusion CO 2 and S contents can be underestimated (by up to ∼ 40 % and 60 %, respectively) if minerals in the bubbles are neglected. This study highlights the importance of 3D mapping of shrinkage bubbles hosted in glass inclusions for a better assessment of the bulk pre-eruptive contents of volatiles in magmas.
Document type :
Journal articles
Complete list of metadata
Contributor : Sylvaine Jouhannel Connect in order to contact the contributor
Submitted on : Wednesday, December 16, 2020 - 9:50:47 AM
Last modification on : Wednesday, January 12, 2022 - 3:40:20 AM
Long-term archiving on: : Wednesday, March 17, 2021 - 6:32:33 PM


Publisher files allowed on an open archive


Distributed under a Creative Commons Attribution - NonCommercial - NoDerivatives 4.0 International License



Federica Schiavi, Nathalie Bolfan-Casanova, R Buso, Mickaël Laumonier, Didier Laporte, et al.. Quantifying magmatic volatiles by Raman microtomography of glass inclusion-hosted bubbles. Geochemical Perspectives Letters, European Assoication of Geochemistry, 2020, 16, pp.17 - 24. ⟨10.7185/geochemlet.2038⟩. ⟨hal-03071638⟩



Les métriques sont temporairement indisponibles