ISTO, UMR 7327,
Univ Orléans, CNRS, BRGM, OSUC, F-45071 Orléans, France
Annuaire

Estelle Rose-Koga
Statut : Permanent, job : ChercheurFonction : Responsable équipe Magma & Déformation (MADMAX)
Building : CNRS, desktop 213
Directrice de Recherches, CNRS
Email : estelle.rose-koga@cnrs-orleans.fr
Phone : 0238255093
Major Program : Magma & Déformation
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 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 and nanoSIMS.
ADMINISTRATIVE RESPONSABILITIES
2025- : Member of the Conseil d'Administration du STUDIUM
2024- : Member of the Conseil Académique of University of Orléans
Member of the Commission Recherche of the University of Orléans
2023- : Head of the Magma & Geodynamic Team at ISTO
Member of the Comité de Direction
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
ADVISED STUDENTS
PhD:
. Léa Courtonne 2025-
. 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: 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., Rapporteur
Maria Jimenez, Univ. de la Palma, Rapporteur
Juliette Pin, Univ. Bretagne Occidentale, Rapporteur
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 – Rapporteur
Kristijan Rajic, ISTO, Orléans – President
2022. Shengyu Tian, IPG, Paris – President
Sarah Figowy – Sorbonne Université, Paris, France – Rapporteur
2021. Raimundo Brahm, Massey University, New Zealand – Rapporteur
2017. Mélina Manzini, University of Lausanne, Switzerland – Rapporteur
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 Recherche at CNRS, ISTO, Orléans, France
2014 : 6 months, Visiting Scholar, University of Toronto, Canada
2005- 2022 : Chargée de Recherche at CNRS, LMV Clermont-Ferrand, France
2002-2005 : Chargée de Recherche 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)
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 Primordial halogens in proto-Iceland plume, in review to GPL
Moussallam, Y., Rose-Koga, E.F., Aubaud, C., Georgeais, G., Cartigny, P., Koga, K.T., Devidal, J-L., Michael, P.J., Shimizu, K., Saal, A.E., 2025. Enigmatic carbon isotopic variability in the oceanic upper mantle. Proceedings of the National Academy of Sciences 122 (25), e2502886122
Moussallam, Y., Koga, K.T., Rose–Koga, E.F., Aubaud, C., Lee, H.J., Georgeais, G., 2025. The carbon isotopic signature of the upper mantle is heterogeneous. Commun Earth Environ 6, 6. https://doi.org/10.1038/s43247-024-01973-9
Bani, P., Aiuppa, A., Coppola, D., Carn, S., Cluzel, D., Rose-Koga, E., Medard, E., Nauret, F., Moussallam, Y., Tari, D., Bani, I., 2025. Magmatic volatiles control the sub-plinian basaltic eruptions at Ambae volcano, Vanuatu. Commun Earth Environ 6, 84. https://doi.org/10.1038/s43247-025-02018-5.
Anderson, O.E., Jackson, M.G., Dottin, J., Harðardóttir, S., Koga, K.T., Seward, G., Cottle, J., Rose-Koga, E.F., Gauer-Pasqualon, N., 2025. Volatiles in olivine-hosted melt inclusions from a rejuvenated Oʻahu tephra: Degree of melting controls the primary melt CO2 content—And extent of H2O degassing—Of OIB. Chemical Geology 678, 122604. https://doi.org/10.1016/j.chemgeo.2024.122604
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 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 and nanoSIMS.
ADMINISTRATIVE RESPONSABILITIES
2025- : Member of the Conseil d'Administration du STUDIUM
2024- : Member of the Conseil Académique of University of Orléans
Member of the Commission Recherche of the University of Orléans
2023- : Head of the Magma & Geodynamic Team at ISTO
Member of the Comité de Direction
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
ADVISED STUDENTS
PhD:
. Léa Courtonne 2025-
. 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: 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., Rapporteur
Maria Jimenez, Univ. de la Palma, Rapporteur
Juliette Pin, Univ. Bretagne Occidentale, Rapporteur
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 – Rapporteur
Kristijan Rajic, ISTO, Orléans – President
2022. Shengyu Tian, IPG, Paris – President
Sarah Figowy – Sorbonne Université, Paris, France – Rapporteur
2021. Raimundo Brahm, Massey University, New Zealand – Rapporteur
2017. Mélina Manzini, University of Lausanne, Switzerland – Rapporteur
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 Recherche at CNRS, ISTO, Orléans, France
2014 : 6 months, Visiting Scholar, University of Toronto, Canada
2005- 2022 : Chargée de Recherche at CNRS, LMV Clermont-Ferrand, France
2002-2005 : Chargée de Recherche 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)
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 Primordial halogens in proto-Iceland plume, in review to GPL
Moussallam, Y., Rose-Koga, E.F., Aubaud, C., Georgeais, G., Cartigny, P., Koga, K.T., Devidal, J-L., Michael, P.J., Shimizu, K., Saal, A.E., 2025. Enigmatic carbon isotopic variability in the oceanic upper mantle. Proceedings of the National Academy of Sciences 122 (25), e2502886122
Moussallam, Y., Koga, K.T., Rose–Koga, E.F., Aubaud, C., Lee, H.J., Georgeais, G., 2025. The carbon isotopic signature of the upper mantle is heterogeneous. Commun Earth Environ 6, 6. https://doi.org/10.1038/s43247-024-01973-9
Bani, P., Aiuppa, A., Coppola, D., Carn, S., Cluzel, D., Rose-Koga, E., Medard, E., Nauret, F., Moussallam, Y., Tari, D., Bani, I., 2025. Magmatic volatiles control the sub-plinian basaltic eruptions at Ambae volcano, Vanuatu. Commun Earth Environ 6, 84. https://doi.org/10.1038/s43247-025-02018-5.
Anderson, O.E., Jackson, M.G., Dottin, J., Harðardóttir, S., Koga, K.T., Seward, G., Cottle, J., Rose-Koga, E.F., Gauer-Pasqualon, N., 2025. Volatiles in olivine-hosted melt inclusions from a rejuvenated Oʻahu tephra: Degree of melting controls the primary melt CO2 content—And extent of H2O degassing—Of OIB. Chemical Geology 678, 122604. https://doi.org/10.1016/j.chemgeo.2024.122604