Annuaire

RESEARCH TOPICS
I study the cycle of volatile elements in subduction zone settings to try to understand why and how volcanoes erupt the way they do. I use melt inclusions to get to the volatile compositions of the less degassed source of arc magmas, but also of mid-ocean ridge and hot spot magmas. I am an isotope geochemist by education and use stable isotopes (for ex. B, C, S and Cl) and their fractionation to study magma degassing and magma mixing. I use volatile element diffusion in embayment to calculated magma ascent rates. All of my research themes involve in situ analysis which I perform by using SIMS, nanoSIMS, LA-ICPMS, and EMP.

ADMINISTRATIVE RESPONSABILITIES
2025- : Member of the Conseil d'Administration du STUDIUM
2024- : Member of the Conseil Académique and of the Commission Recherche of University of Orléans
2023- : Member of the Comité d'Experts Disciplinaires (CED)
2023- : Head of the "Magma & Deformation" Team at ISTO and member of the Comité de Direction
2022- : IODP corresponding scientist for ISTO
2020-2022 : Head of the Geochemistry Team at LMV
2020-2022 : Member of the Scientific Committee of Labex CLERVOLC
2018-2021 : Member of the INSU-CNRS Scientific Committee, TelluS-SYSTER
2018-2023 : Treasurer of the European Association of Geochemistry

POST-DOC :
2026- Léa Ostorero (coll. P. Sternai, Univ. Milano & J. Andujar, ISTO)

ADVISED STUDENTS
PhD:
. Nayuta Morikita 2025- (co-adv. K. Koga, ISTO)
. Léa Courtonne 2025- (co-adv. P. Cartigny, IPG Paris)
. Klaudia Cyrzan 2022- (co-adv. V. Zanon, University of Azores)
. Shashank Prabha Mohan 2021-2024 (co-adv. K. Koga)
. Guillaume Georgeais 2019-2023 (co-adv. Y. Moussallam, K. Koga, A. Harris)
. Masataka Kawaguchi 2018-2021 (co-adv. K.Koga & A.Yoshiasa, Univ. Kumamoto, JP)
. Diego Narvaez 2018-2021 (co-adv. P. Samaniego & K. Koga)
. Gabrielle Ménard 2010-2014 (co-adv. I. Vlastelic)
. Marion Le Voyer 2006-2009 (co-adv. P. Schiano)

VAE : Christy Haruel 2021-2024 (co-adv. P. Bani, E. Médard)

Undergraduates: Nicolas Gallois-Vigand 2026 ; Clément Quintus 2024 ; Manon Pouget 2022 ; Alexis Chapuis 2020-2021 ; Guillaume Georgeais 2018-2019 ; Sarah Lang 2017-2018 ; Antonin Bouillet 2016-2017 ; Diego Narvaez, 2015-2016 ; Ludovic Leduc 2011-2012 ; Marion Le Voyer, 2005-2006 ; Lucie Grousset (ENSG, Nancy), 2012.

MEMBER OF COMMITTEE
HDR
2025. Pierre Bouilhol, CRPG, Examiner
PhD
2025. Antoine Bracco Gartner, Vrije Univ., Rapportrice
Maria Jimenez, Univ. de la Palma, Rapportrice
Juliette Pin, Univ. Bretagne Occidentale, Rapportrice
2024. Anna Theurel, ISTERRE, Examiner
Khadija Alaoui, ISTO, President
Elena Nunez, ISTO, President
2023. Federica Faranda, ISTO, Orléans – President
Alexane Legeay, ISTO, Orléans – President
2023. Isabelle Génot, IPG, Paris – Rapportrice
Kristijan Rajic, ISTO, Orléans – President
2022. Shengyu Tian, IPG, Paris – President
Sarah Figowy – Sorbonne Université, Paris, France – Rapportrice
2021. Raimundo Brahm, Massey University, New Zealand – Rapportrice
2017. Mélina Manzini, University of Lausanne, Switzerland – Rapportrice
2016. Géraldine Zdanowicz, IPG Paris, France – Examiner
2012. Livia Colo', University of Florence, Italy – Examiner
2005. Emmanuel Lemarchand, Université P. Sabatier, Toulouse, France – Examiner

WORK EXPERIENCE
2022- present : Directrice de Recherches at CNRS, ISTO, Orléans, France
2014 : 6 months, Visiting Scholar, University of Toronto, Canada
2005- 2022 : Chargée de Recherches at CNRS, LMV Clermont-Ferrand, France
2002-2005 : Chargée de Recherches at CNRS, ENS Lyon, France
2000-2001 : Post-Doctorate at Okayama University at Misasa, Japan
1999-2000 : Post-Doctorate at Woods Hole Oceanographic Institution MA, USA

EDUCATION
2012 : Habilitation à Diriger des Recherches (HDR). Univ. B. Pascal. Clermont-Ferrand
1999 : Ph.D. in isotopic geochemistry at CRPG-CNRS, Nancy, France

5 MOST RECENT PUBLICATIONS (* = student)
• Moussallam Y.; Georgeais G.; Ding S.; Devidal J-L.; Scaillet S.; Oppenheimer C.; Burgisser A.; Rose-Koga E.F.; Koga K.T.; Peters N.; Peccia A.; Samaniego P.; Métrich N.; Robidoux P.; Kawaguchi M., 2026. On the oxidation state of arc magmas, Geochemical Perspectives Letters
• Bouvier A-S., Guitreau M.; Le Lay C.; Laubier M.; Rose-Koga E.F., 2026. Low δ30Si values in olivine-hosted melt inclusions trace sediment contributions to subduction zone melts, Earth and Planetary Science Letters 679, 119884
• Georgeais* G., Moussallam Y., Rose-Koga E.F., Koga K.T., Gurioli L., Harris A., Métrich N., Bertagnini A., Verdier-Paoletti M., Pistolesi M., 2026. Deeper, bigger, faster, stronger? Positive correlations between extreme magma ascent rate and explosive eruption parameters at Stromboli volcano (Italy), Bull Volcanol 88, 2. https://doi.org/10.1007/s00445-025-01888-z
• Prabha Mohan* S., Koga K.T.K., Narváez D.F., Rose-Koga E.F., Labidi J., 2025 Experimental determination of equilibrium sulfur isotope fractionation factors in the gas-silicate melt-sulfide liquid system. Geochimica et Cosmochimica Acta, https://doi.org/10.1016/j.gca.2025.12.001
• Tomlinson E.L., Rose-Koga E.F., Bouvier A.-S., Donal O’Farrell, John Caulfield, Matthew G. Jackson, Yves Moussallam, Finlay M. Stuart and Johan Villeneuve, 2025 Halogens in proto-Iceland plume basalts, Geochemical Perspectives Letters, 37, 12-17, https://doi.org/10.7185/geochemlet.2539.