Maître de conférences, UCA
Equipe de Pétrologie
Axes : Géologie RégionaleVolcanisme Andin
Associate Professor (Maître de Conférences)
Bureau : 1.08 – LMV Cézeaux
Téléphone : +33 473 346 745
Courriel : etienne.medard@uca.fr
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  • Research topics:

    • Mantle melting and primary magmas
    • Thermobarometry of volcanic systems
    • Influence of water on phase relations
    • Differenciation of the planet Mars
    • Siderophile elements geochemistry
    • Tools: experimental petrology (piston-cylindre, internally and externally heated pressure vessels, 1 atm furnace, centrifuge), micro-analytical techniques (SEM, electron microprobe, Raman, SIMS, LA-ICP-MS, XANES), thermodynamic modelling, petrography, field geology.

     

  • Ongoing administrative responsibilities:

    • Program coordinator, master STPE, specialty Magmas and Volcanoes (2021-)
    • Management of the piston-cylinder laboratory at LMV (2010-2015, 2022-)
    • Member of CSRPN (advisory scientific regional council for natural heritage), AuRA region (2022-)
    • Member of CRPG (advisory regional council for geoheritage), AuRA region (2022-)
    • Elected member of CNU section 35th – national representative faculty body (2011-2015, 2023-)
    • Coordinator for the « Regional geology » theme at LMV (2023-)
    • Member of the scientific advisory board of Vulcania (2025-)

  • Teaching:

    • University: Université Clermont Auvergne
    • Topics: Introduction to Earth sciences – Magmatic and metamorphic petrology – Mineralogy – Fieldwork – Microscopy
    • Level: Bachelor and Master in Earth sciences, Bachelor in Biology

  • Publications since 2010:

    Articles scientifiques

    43 publication(s) | Article scientifique au 11/06/2026


    • Chatagnier P.Y, Devouard B., Médard E. , Muyal J. (2024) . Les plagioclases gemmes du monastier sur gazeille, haute loire. LEREGNEMIN (Le Règne Minéral) . vol.178, p.55-59,
    • Lacombe T. , Gurioli L. , Di Muro A., Médard E. , Berthod C. , Bachèlery P. , Bernard J., Sadeski L., Komorowski J.-C. (2024) . Late quaternary explosive phonolitic volcanism of petite terre (mayotte, western indian ocean). BULLVOLC (Bulletin of Volcanology) . vol.86, p.11, DOI
    • Chatagnier P.-Y., Devouard B., Médard E. , Muyal J., Boivin P. coll. , Lebocey J. coll. (2024) . Les plagioclases gemmes du monastier sur gazeille, haute loire. LEREGNEMIN (Le Règne Minéral) . p.55-59,
    • Verdurme P. , Gurioli L. , Chevrel O. , Médard E. , Berthod C. , Komorowsk J.C., Harris A. , Paquet F., Cathalot C., Feuillet N., Lebas E., Rinnert E., Donval J.P., Thinon I., Deplus C., Bachèlery P. (2024) . Magma ascent and lava flow field emplacement during the 2018–2021 fani maor´e deep submarine eruption insights from lava vesicle textures. EPSL (Earth and Planetary Science Letters) . vol.636, p.118720, DOI



    • Berthod C. , Médard E. , Di Muro ., Ali T.H., Gurioli L. , Chauvel C., Komorowski J.C., Bachèlery P. , Peltier A., Benbakkar M. , Devidal J.L. , Besson P., Le Friant A., Deplus C., Nowak S., Thinon I., Burckel P., Hidalgo S. , Feuillet N., Jorry S., Fouquet Y. (2021) . Mantle xenolith bearing phonolites and basanites feed the active volcanic ridge of mayotte (comoros archipelago, sw indian ocean). CONTMP (Contributions to Mineralogy & Petrology) . vol.176, p.75,
    • Berthod C. , Médard E. , Bachèlery P. , Gurioli L. , Di Muro A., Peltier A., Komorowski J.C., Benbakkar M. , Devidal J.L. , Langlade J., Besson P., Boudon G., Rose-Koga E. , Deplus C., Le Friant A., Bickert M., Nowak S., Thinon I., Burckel P., Hidalgo S., Kaliwoda M., Jorry S.J., Fouquet Y., Feuillet N. (2021) . The 2018 ongoing mayotte submarine eruption: magma migration imaged by petrological monitoring. EPSL (Earth and Planetary Science Letters) . vol.571, p.117085, DOI
    • Paquette J.L. , Médard E. , Poidevin J.L., Barbet P. (2021) . Precise dating of middle to late villafranchian mammalian paleofaunae from the upper allier river valley (french massif central) using u–pb geochronology on volcanic zircons. QUATGEOCHRO (Quaternary Geochronology) . vol.65, p.101198, DOI
    • Moussallam Y. , Médard E. , Georgeais G. , Rose-Koga E. , Koga K. , Pelletier B., Bani P. , Shreve T.L., Grandin R., Boichu M., Tari D., Peters N. (2021) . How to turn off a lava lake? a petrological investigation of the 2018 intra caldera and submarine eruptions of ambrym volcano. BULLVOLC (Bulletin of Volcanology) . vol.Special volume, DOI

    • Manrique N., Samaniego P. , Médard E. , Schiavi F. , Mariño J., Liorzou C. (2020) . Pre eruptive magmatic processes associated with the historical (218± 14 abp) explosive eruption of tutupaca volcano (southern peru). BULLVOLC (Bulletin of Volcanology) . vol.82, p.6, DOI



    • Collinet M., Charlier B., Namur O., Oeser M., Médard E. , Weyer S. (2017) . Crystallization history of enriched shergottites from fe and mg isotope fractionation in olivine megacrysts. GCA (Geochimica et Cosmochimica Acta) . vol.207, p.277-297, DOI
    • Rhety M. , Harris A. , Villeneuve N., Gurioli L. , Médard E. , Chevrel O. , Bachèlery P. (2017) . A comparison of cooling limited and volume limited flow systems: examples from channels in the piton de la fournaise april 2007 lava flow field. G3 (Geochemistry, Geophysics, Geosystems) . vol.18, p.3270-3291, DOI
    • Latutrie B. , Harris A. , Médard E. , Gurioli L. (2017) . Eruption and emplacement dynamics of a thick trachytic lava flow of the sancy volcano (france). BULLVOLC (Bulletin of Volcanology) . vol.79, p.4, DOI

    • Condamine P. , Médard E. , Devidal J.L. (2016) . Experimental melting of phlogopite‑peridotite in the garnet stability field. CONTMP (Contributions to Mineralogy & Petrology) . vol.171, p.95, DOI
    • Druitt T. , Mercier M. , Florentin L., Deloule E., Cluzel N. , Médard E. , Cadoux A. (2016) . Magma storage and extraction during plinian and interplinian periods at santorini caldera (greece). JOURPETRO (Journal of Petrology) . vol.57, p.461-494, DOI
    • Baasner A. , Médard E. , Laporte D. , Hoffer G. (2016) . Partial melting of garnet lherzolite with water and carbon dioxide at 3 gpa using a new melt extraction technique: implications for intraplate magmatism. CONTMP (Contributions to Mineralogy & Petrology) . vol.171, p.45, DOI

    • Collinet M., Médard E. , Charlier B., Vander Auwera J., Grove T.L. (2015) . Melting of the primitive martian mantle at 0.5–2.2 gpa and the origin of basalts and alkaline rocks on mars. EPSL (Earth and Planetary Science Letters) . vol.427, p.83-94, DOI
    • Médard E. , Schmidt M.W., Wämlle M., Keller N.S., Günther D. (2015) . Platinum partitioning between metal and silicate melts: core formation, late veneer and the nanonuggets issue. GCA (Geochimica et Cosmochimica Acta) . vol.162, p.183-201, DOI
    • Martin A., Médard E. , Devouard B. , Keller L.P., Righter K., Devidal J.L. , Rahman Z. (2015) . Fayalite oxidation processes in obsidian cliffs rhyolite flow, oregon. AMMIN (American Mineralogist) . vol.100, p.1153-1164, DOI

    • Sehlke A., Whittington A., Robert B., Harris A. , Gurioli L. , Médard E. (2014) . Pahoehoe to `a`a transition of hawaiian lavas: an experimental study. BULLVOLC (Bulletin of Volcanology) . vol.76, p.876, DOI
    • Robert B., Harris A. , Gurioli L. , Médard E. , Sehlke A., Whittington A. (2014) . Textural and rheological evolution of basalt flowing down a lava channel. bulletin of volcanology 76, 824,. DOI
    • Dauphas N., Roskosz M., Alp E.E., Neuville D.R., Hu M.Y., Sio C.K., Tissot F.L.H., Zhao J., Tissandier L., Médard E. , Cordier C. (2014) . Magma redox and structural controls on iron isotope variations in earth’s mantle and crust. earth and planetary science letters 398, 127 140,. DOI
    • Condamine P., Médard E. (2014) . Experimental melting of phlogopite bearing mantle at 1 gpa: implications for potassic magmatism. earth and planetary science letters 397, 80 92,. DOI

    • Sorbadere F., Médard E. , Laporte D. , Schiano P. (2013) . Experimental melting of hydrous peridotite–pyroxenite mixed sources: constraints on the genesis of silica undersaturated magmas beneath volcanic arcs: earth and planetary science letters, v. 384, p. 4. DOI

    • Hetényi G., Taisne B., Garel F., Médard E. , Bosshard S., Mattsson H.B. (2012) . Scales of columnar jointing in igneous rocks: field measurements and controlling factors. bulletin of volcanology 74, 457 482,. DOI

    • Malfait W.J., Sanchez-Valle C., Ardia P., Médard E. , Lerch P. (2011) . Compositional dependent compressibility of dissolved water in silicate glasses: american mineralogist, v. 96, p. 1402 1409,. DOI

    Congrès :

    51 publication(s) | congrès au 11/06/2026

    • Lacombe T. , Dimuro A., Médard E. , Gurioli L. , Berthod C. , Bachèlery P. , Komorowski J.C., Besson P. (2023) . “a phonolite? from the mantle?”: the magmatic system under the phonolitic tuff rings of petite terre (mayotte, france, western indian ocean).
    • Thinon I., Lemoine A., Leroy S., Feuillet N., Michon L., Boymond P., Masquelet C., Rusquet A., Paquet F., Zaragosi S., Delescluse M., Watremez L., Chamot-Rooke N., Sauter D., Bernard J., Berthod C. , Famin V., Gurioli L. , Rolandone F., van Der Woerd J., Mercury N., Doubre C., Jorry S.J., Bachèlery P. , Jacques E., Battaglia J. , Clouard V., Scholtes L. , Médard E. , Ture C., Le Lorec B., Etcheverry L., Keiser A., Ben-Naghrouzi N., Canva A., Peyrefitte A. (2023) . Volcanisme et tectonique le long de l'archipel des comores (canal nord mozambique) : état d'avancement du projet anr coyotes.






    • Marique N., Samaniego P. , Médard E. , Mariño J., Valderrama P., Liorzou C., Fidel L. (2016) . Pre eruptive magmatic processes associated with the historical (218 ± 14 abp) explosive eruption of tutupaca.
    • Whittington A., Soldati A,, Sehlke A., Robert B., Médard E. , Harris A. , Gurioli L. , Chigna G. (2016) . Lava flow morphology as a proxy for lava flow rheology: mapping rheological transitions in basaltic lava flows.

    • Baratoux D., Collinet M., Médard E. (2015) . A revised thermal evolution of mars from remote sensing chemistry and new experimental data in the 0.5 2.5 gpa pressure range (présentation orale).
    • Médard E. , Schmidt M.W., Martin A.M., Van Orman J.A., Wälle M., Devidal J.L. , Lanzirotti A., Newville M., Günther D. (2015) . Evidence for metal anions in silicate melts: implications for pt partitioning, nanonuggets and core formation (poter). vol.46, p.Abstract #2905,

    • Baasner A. , Médard E. , Laporte D. (2014) . Partial melting of garnet lherzolite with h2o and co2 at 3 gpa: implications for intraplate magmatism. abstract di21a 4258 presented at 2014 fall meeting, agu, san francisco, ca, 15 19 december (poste.
    • Collinet M., Charlier B., Namur O., Oeser M., Médard E. , Vander Auwera J., Weyer S. (2014) . Fe and mg isotope fractionation in olivine from the nwa 1068 shergottite. goldschmidt 2014, sacramento, 8 13 juin (oral)..
    • Manrique N., Samaniego P. , Médard E. , Mariño J., Valderrama P. , Liorzou C. (2014) . Procesos petrogenéticos y condiciones fisicas pre eruptivas responsables de la erupción reciente del volcan tutupaca (tacna). xvii congreso peruano de geologia, resumenes extendidos. sociedad geológic.
    • Médard E. , Collinet M. (2014) . Shergottites : partial melts of a depleted martian mantle. lunar and planetary science 45, abstract #2840, lunar and planetary institute, the woodlands, 17 21 mars (poster)..
    • Collinet M., Médard E. , Vander Auwera J., Charlier B. (2014) . Alkaline primary melts from the primitive mantle of mars. lunar and planetary science 45, abstract #2839, lunar and planetary institute, the woodlands, 17 21 mars (poster)..
    • Collinet M., Charlier B., Médard E. , Vander Auwera J., Grove T.L. (2014) . New experimental constraints on the origin of shergottites: super chondritic ca/al in melts from a garnet free martian mantle. lunar and planetary science 45, abstract #2776, lunar and planetary insti.
    • Médard E. , Martin A.M., Collinet M., Righter K., Grove T.L., Newville M., Lanzirotti A. (2014) . Fe3+ partitioning during basalt differentiation on mars: insights into the oxygen fugacity of the shergottite mantle source(s). . abstract v52b 03 presented at 2014 fall meeting, agu, san francisco, c.
    • Dauphas N., Roskosz M., Alp E.E., Neuville D.R., Hu M., Sio C.K., Tissot F., Zhao J., Tissandier L., Médard E. (2014) . Controls of p t x fo2 on iron isotopic fractionation in igneous rocks. abstract v52b 01 presented at 2014 fall meeting, agu, san francisco, ca, 15 19 december (oral)..

    • Martin A., Médard E. , Devouard B. , Keller L.P., Righter K., Devidal J.L. , Rahman Z. (2013) . Fayalite oxidation processes at obsidian cliffs, oregon. in goldschmidt 2013, florence, 25 30 août (poster)..
    • Roskosz M., Dauphas N., Alp E., Sio C., Bi W., Tissot F., Hu M., Bouhifd A. , Médard E. (2013) . Pressure control on iron isotope variations in morbs determined by nuclear resonant vibrational spectroscopy. in abstract mr31a 2275 presented at 2013 fall meeting, agu, san francisco, ca, 9 13 decemb.
    • Médard E. , Le Pennec J.L. , Francomme J., Temel A., Nauret F. (2013) . Amphibole barometry in rhyolitic systems: an experimental recalibration and application to the cappadocian ignimbrites (turkey). in goldschmitt conference, août 2013, florence, italie (oral)..
    • Laporte D. , Koga K. , Médard E. , Schiano P. (2013) . Observer, quantifier, modéliser les processus magmatiques et leurs produits un colloque en l'honneur de pierre boivin et ariel provost à clermont ferrand 23 et 24 mai..
    • Dauphas N., Roskosz M., Lin J.F., Liu J., Neuville D.R., Alp E.E., Hu M., Zhao J., Mc Cammon C.A., Okuchi T., Tomioka N., Sio C.K., Tissot F., Tissandier L., Médard E. , Cordier C. (2013) . Pressure control on iron isotope variations in morbs determined by nuclear resonant vibrational spectroscopy. in abstract mr52a 03 presented at 2013 fall meeting, agu, san francisco, ca, 9 13 december.
    • Condamine P. , Médard E. , Laporte D. , Nauret F. (2013) . Experimental melting of phlogopite peridotite at 1 gpa implications for potassic magmatism. in goldschmit 2013, florence. mineralogical magazine, 77(5), 909..
    • Collinet M., Médard E. , Vander Auwera J., Charlier B. (2013) . Melting of a primitive martian mantle at 1 2 gpa: experimental constraints on the origin of martian magmas. in lunar and planetary science 44, abstract #2542, lunar and planetary institute, the woodla.
    • Roskosz M., Dauphas N., Alp E.E., Sio C.K., Tissot F.L.H., Neuville D., Hu M., Zhao J., Tissandier L., Cordier C., Médard E. (2013) . Redox and pressure controls on iron isotope variations in morb determined by nrixs spectroscopy. in goldschmidt 2013, florence, 25 30 août (oral invité)..

    • Médard E. , Schmidt M.W., Condamine P. (2012) . Hydrous felsic magmas as primary mantle melts. empg xiv, kiel, march 4 7th (poster)..
    • Médard E. , Paquette J.L. , Devouard B. , Ricci J., Boivin P. (2012) . Gem sapphires and zircons from cenozoic volcanism of the french massif central. lst international congress on management and awareness in protected volcanic landscapes. 21 25/5/2012 olot. spain..
    • Laporte D. , Médard E. , Devouard B. , Boivin P. , Condamine P. , Hardiagon M. , Thiéry R. (2012) . Cenozoic volcanism in the french massif central: ongoing research activity on a protected volcanic area of high scientific value. lst international congress on management and awareness in protected vo.
    • Dauphas N., Roskosz M., Alp E.E., Sio C.K., Tissot F.L.H., Neuville D., Hu M., Zhao J., Tissandier L., Médard E. (2012) . Iron isotope geochemistry with a synchrotron light beam. goldschmidt 2012, montréal, 24 29 juin..
    • Condamine P. , Médard E. , Laporte D. (2012) . Low degree partial melting of phlogopite lherzolite at 1 gpa: implications for potassic magmatism. empg xiv, kiel, march 4 7th (poster)..
    • Sorbadère F., Médard E. , Laporte D. , Schiano P. (2012) . Melting of heterogeneous hydrous mantle in arc settings: constraints on the genesis of silica undersaturated arc magmas. goldschmidt 2012, montréal, 24 29 juin (talk)..
    • Collinet M., Médard E. , Vander Auwera J., Charlier B. (2012) . Anhydrous melting of a primitive martian mantle: new experiments at 1 2 gpa. the mantle of mars workshop, lunar and planetary institute, houston, 10 12 septembre (talk)..
    • Boivin P. , Devouard B. , Laporte D. , Médard E. (2012) . The chaîne des puys (french massif central) volcanic range: a textbook example of magma differentiation. lst international congress on management and awareness in protected volcanic landscapes. 21 25/.
    • Dauphas N., Roskosz M., Alp E.E., Sio C.K., Tissot F.L.H., Neuville D., Hu M., Zhao J., Tissandier L., Médard E. (2012) . Controls on iron isotope variations in planetary magmas. lunar and planetary science 43, abstract #, lunar and planetary institute, houston (talk)..
    • Dauphas N., Roskosz M., Alp E.E., Sio C.K., Tissot F.L.H., Neuville D., Hu M., Zhao J., Tissandier L., Cordier C., Médard E. (2012) . Redox control on iron isotope variations in magmas determined by nuclear resonant vibrational spectroscopy. european mineralogical conference 2012, frankfurt am main, 2 6 septembre..
    • Collinet M., Médard E. , Devouard B. , Peslier A. (2012) . Constraints on the parental melts of enriched shergottites from image analysis and high pressure experiments. 43nd lunar and planetary science conference, 19 23 march 2012, the woodlands, texas..

    • Martin A.M., Righter K., Keller L.P., Médard E. , Devouard B. , Rahman Z. (2011) . Fayalite oxidation processes: experimental evidence for the stability of pure ferric fayalite?: 42nd lunar and planetary science conference, 7 11 march 2011, the woodlands, texas. lpi contribution no..
    • Martin A.M., Righter K., Keller L.P., Médard E. , Devouard B. , Rahman Z. (2011) . Fayalite oxidation processes: experimental evidence for the stability of pure ferric fayalite?: lunar and planetary science xlii, abstract #2716, lunar and planetary institute, houston (poster)..
    • Huh M.C., Boyce J., Manning C.E., Médard E. (2011) . Experimental determination of hydrogen partitioning in an apatite haplobasalt andesite melt system at 1200°c and 1 gpa: abstract v21d 2534 presented at 2011 fall meeting, agu, san francisco, calif., 5.

    • Hetényi G., Garel F., Médard E. , Taisne B., Mattsson B. H., Bosshard S. (2010) . Columnar jointing pattern: characterization and interpretation. egu general assembly, vienne, may 2 7..
    • Médard E. , Schmidt M.W., Wälle M., Keller N.S., Günther D. (2010) . Pt in silicate melts: centrifuging nanonuggets to decipher core formation processes. lunar and planetary science 41, abstract #2639, lunar and planetary institute, houston..
    • Médard E. , Schmidt M.W., Wälle M., Keller N.S., Günther D. (2010) . Hse partitioning and core formation: solving the nanonugget issue. empg xiii, toulouse, april 11 14..
    • Malfait W.J., Sanchez-Valle C., Ardia P., Médard E. (2010) . Compositional dependent compressibility of dissolved water in silicate glasses. empg xiii, toulouse, april 11 14..