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Dr. Guillaume Florin

FU Berlin - Geochemistry

Postdoc

Malteserstraße 74-100, Room B219, 12249 Berlin

About Me

I obtained a cotutelle PhD between Lorraine University/CRPG and Macquarie University. During my PhD, I worked on the formation and the evolution of FeNi metal phases in the Early Solar System. To do so, I analysed germanium isotopes and siderophile elements in Ordinary and Bencubbinite primitive chondrites. I am currently working as a research scientist with the TRR 170 Project B1 at the Institute of Geological Sciences, Freie Universität Berlin.

My main research interests are,

  • Lunar volatiles and moon formation
  • Fractionation of moderately volatile elements during condensation/volatilization and planetesimal differentiation
  • Mineral formation in the early solar system

Recent project work

My research within the TRR-170 project consists in the study of lunar highland rocks and mare basalts through the scope of Zn-K-Cu stable isotope signature. The choice of these three elements relies on their different volatility and chemical characteristics (siderophile, chalcophile, and lithophile). For our analyses, we will take advantage of cutting-edge Neoma MC-ICP-MS technics of the Freie Universität to produce new high-quality isotopic data of Moon rocks. The goal is to understand the origin of loss processes that affect volatile elements in lunar rocks.

Award

2021 – Best 2021 scientific communication by the French Society of IsotopeS, SFIS

Publications

2022

Florin, G., Alard, O., Luais, B., & Rushmer, T. Origin of metal in H ordinary chondrites: Partial melting of precursors infers by siderophile elements. To be submitted to Earth Planet. Sci. Lett.

Boone, S., Dalton, H., Prent, A., Kohlmann, F., Theile, M., Greau, Y., Florin, G., Noble, W., Hodgekiss, S., Ware, B., Phillips, D., Kohn, B., O'Reilly, S., Gleadow, A., McInnes, B., & Rawling, T. (2022): AusGeochem: An open interactive platform for geochemical data preservation, dissemination and synthesis.  Geostandards and Geoanalytical Research. https://doi.org/10.1111/ggr.12419

2021

Florin, G., Luais, B., Alard, O., & Rushmer, T. (2021) : The formation of CB chondrites: inferences from germanium isotopes and highly siderophile element abundances. Meteoritics & Planetary Science. https://doi.org/10.1111/maps.13698

2020

Florin, G. (2020): FeNi metal condensation and evolution in the Early Solar System: a study of germanium isotopes and siderophile elements in Ordinary and Bencubbinite primitive chondrites. Earth Sciences. Université de Lorraine; Macquarie University (Sydney, Australie). English. PhD NNT : 2020LORR0084. tel-02964571 https://hal.inria.fr/tel-02964571

Vacher, L. G., Piani, L., Rigaudier, T., Thomassin, D., Florin, G., Piralla, M., & Marrocchi, Y. (2020) : Hydrogen in chondrites: Influence of parent body alteration and atmospheric contamination on primordial components. Geochimica et Cosmochimica Acta, 281, 53-66. https://doi.org/10.1016/j.gca.2020.05.007

Florin, G., Luais, B., Rushmer, T., & Alard, O. (2020): Influence of redox processes on the germanium isotopic composition of ordinary chondrites, Geochimica et Cosmochimica Acta, 269, 270-291. https://doi.org/10.1016/j.gca.2019.10.038

Conferences

Florin G., Alard O., Luais B., & Rushmer T. (2021): Is Fe-Ni alloy in Ordinary Chondrites formed by precursors partial melting? Goldschmidt Abstracts, 2021, 4360. Flash talk

Florin G., Alard O., Luais B., & Rushmer T. (2019): Metal formation in Ordinary chondrites. Goldschmidt Abstracts, 2019, 1011. Poster

Florin G., Luais B., Rushmer T., & Alard O. (2019): Bencubbinite formation: the turbulent life of metal as inferred from Germanium isotopes. 82th Annual Meeting of the Meteoritical Society 2019, 8-12 Juillet, Sapporo (Japan) LPI Contributions N°2157, #6313. Talk

Luais, B., Phelipeau, A., Toplis, M., Cividini, D., Tissandier, L., Florin, G., & Alard, O. (2019): Experimental Germanium isotopic fractionation under HT, fO2-controlled conditions of core formation and accretion, Goldschmidt Abstracts, 2019, 2069. Talk

Florin, G., Luais, B., Rushmer, T., & Alard, O. (2018): Germanium isotopic distribution in ordinary chondrites: inference on oxidation state of parent bodies, 81st Annual Meeting of the Meteoritical Society 2018, 22-27 July Moscou (Russia) LPI Contributions N°2067, #6131. Talk

Florin G., Luais B., & Rushmer T (2018): Germanium isotopic distribution in ordinary chondrites. Inference of metal formation and evolution of planetesimals. Workshop "Meteorites - Understanding the origin of planet diversity" Paris, June 6 -8th 2018. Talk

Florin G., Luais B., &and Rushmer T. (2017b): Germanium isotopic variations in metals in H chondrites: implications for metal-silicate segregation. Goldschmidt Abstracts, 2017, 1175. Poster

Florin G., Luais B., &and Rushmer T. (2017a): Germanium isotopic variations in metals in H chondrites: implications for metal-silicate segregation. ACCRETE Workshop "Accretion, differentiation and early evolution of the terrestrial planets”, Nice, 29 May - 3 June. Poster