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Formation and evolution of the solar system and the planets

Animators : Yves Marrocchi & Evelyn Füri

Permanent investigators : Guillaume Caro, Camille Cartier, François Faure, Jessica Flahaut, Evelyn Füri, Andrey Gurenko, Béatrice Luais, Yves Marrocchi, Bernard Marty, Laurette Piani, Laurent Tissandier, Johan Villeneuve

Postdoc fellows :

Michael Broadley, Célia Dalou,

PhD students :

Lionel Vacher (2015-2018), Guillaume Florin (2016-2019), David Bekaert (2017-2020) Julien Boulliung (2017-2020) Marion Auxerre (2018-2021)


Cosmochemistry

The classical model of solar system formation involves the gravitational collapse of a cloud of gas and dust, its warming, the creation of a central star, the cooling of the cloud by expansion and loss of matter, the formation of increasingly massive bodies, and finally the formation and stabilisation of a succession of planets. This model is based on two approaches, astronomical observations of other star systems and the analysis of material available in the solar system (the Earth and the Moon, Mars via SNCs, meteorites, and certain astronomical measurements of giant planets and comets). Although this model is still widely in use, we do not yet know the exact origin of the matter in the solar system (in particular, whether isotopic anomalies are inherited or result from gas-radiation interactions in the disc), the formation timeline of the central star and first solids, or the role of shocks as an alternative to the evaporation-condensation model. The period covered in this project is that of the accretion disc, during which time the Sun was being built from the mixture of gas and dust inherited from the interstellar environment. The most recent results show that many processes that were previously considered to be hierarchical (condensation, the formation of chondrules, the accretion of chondrites and planetesimals, the differentiation of planetesimals, and the accretion of embryos and, finally, of planets) are, in fact, largely synchronous. This finding significantly changes our view of the early evolution of the solar system. A new understanding of the possible sequence of these processes, of the possible relationships of cause and effect, and of their locations, both temporal and "geographical", within the disc becomes necessary. This understanding is the objective of this study, which will combine mineralogical, chemical, and isotopic studies of extraterrestrial matter ; experimental simulations ; and astrophysical models. One of the essential aspects of this work is the correlation between the young solar system (as described through meteorites) and young stars and their discs (as observed by astrophysicists).

Formation and evolution of regoliths
Chondrules as probes of the physico-chemical conditions of the disc
Simulation and dating of condensation processes
Radiation-matter interaction in the disc

Earth and Primitive Life

The Hadean (3.8 to 4.5 Gy) and Archean (2.4 to 3.8 Gy) eons represent key periods in the history of the Earth. Our understanding of that time period is obscured by the extreme rarity of rocks older than 3.5 Gy, but we know that it began with the fusion of the mantle during the lunar impact and that it continued with the establishment of a differentiated crust and a proto-atmosphere at 4.45 Gy. It has also been suggested that the Hadean period witnessed the appearance of the first life forms in a relatively warm primitive ocean that could have been formed at 4.3 Gy.

Despite these major advances, the evolution of the young Earth and its fluid envelopes remains subject to numerous uncertainties. On the one hand, our knowledge of Hadean geology is almost exclusively based on the study of zircons from the Jack Hills (<4.4 Gy). While these exceptional specimens have served to establish a geodynamic and compositional model for the Hadean lithosphere, it is unclear whether these constraints can be generalised for the entire planet or whether they represent a mode of crustal growth that would remain marginal until the end of the Archean period. As for the composition of the ocean and atmosphere, these can be understood only through the isotopic and chemical record of the supposedly oldest sediments, which are Banded Iron Formations (BIFS), cherts, or barites. The study of these sediments requires the development of specific tracers to overcome the secondary disturbances that have invariably affected the oldest terrestrial rocks.

Our research focuses on three main areas that aim to better understand and quantify i) the geodynamic processes at work during the first billion years, ii) the physico-chemical parameters (T, PCO2...) of the ocean-atmosphere system, and iii) the early stages of the evolution of life on our planet. These studies are based on the development of innovative isotopic tools that rely on the CRPG analytical facilities (ion probes, noble gas mass spectrometers, TIMS, and next-generation ICP-MS), and on the geological exploration of Archean cratons in search of a geological record from this period of Earth’s history.

Hadean Geology : From the lunar impact to the creation of the first continents
Composition and temperature of Archean Oceans
Evolution of the Precambrian atmosphere
Biosignatures and Primitive Life


Recent publications

2019

Bekaert, D., M. S. Gudipati, B. Henderson, and B. Marty. "Coulomb explosion of multiply ionized xenon in water ice." Geochemical Journal 53, no. 81 (2019): 69.
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Cartier, C., and B. J. Wood. "The role of reducing conditions in building Mercury." Elements 15 (2019): 39–45.
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Cartier, C., and B. J. Wood. "The role of reducing conditions in building Mercury." Elements 15 (2019): 39–45.
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Marrocchi, Y., R. Euverte, J. Villeneuve, V. Batanova, B. Welsch, L. Ferrière, and E. Jacquet. "Formation of CV chondrules by recycling of amoeboid olivine aggregate-like precursors." Geochimica et Cosmochimica Acta 247, no. 2 (2019): 121–141.
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Mosenfelder, J. L., A. Von Der Handt, E. Füri, C. Dalou, R. L. Hervig, G. R. Rossman, and M. M. Hirschmann. "Nitrogen incorporation in silicates and metals: Results from SIMS, EPMA, FTIR, and laser-extraction mass spectrometry." American Mineralogist 104, no. 1 (2019): 31–46.
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2018

Avice, G., B. Marty, R. Burgess, A. Hofmann, P. Philippot, K. Zahnle, and D. Zakharov. "Evolution of atmospheric xenon and other noble gases inferred from Archean to Paleoproterozoic rocks." Geochimica et Cosmochimica Acta 232 (2018): 82–100.
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Bekaert, D. V., S. Derenne, L. Tissandier, Y. Marrocchi, S. Charnoz, C. Anquetil, and B. Marty. "High-temperature ionization-induced synthesis of biologically relevant molecules in the protosolar nebula." Astrophysical Journal 859, no. 142 (2018).
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Bekaert, D. V., Y. Marrocchi, A. Meshik, L. Remusat, and B. Marty. "Primordial heavy noble gases in the pristine Paris carbonaceous chondrite." Meteoritics & Planetary Science (2018): 1–20.
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Boucher, C., T. Lan, J. Mabry, D. V. Bekaert, P. G. Burnard, and B. Marty. "Spatial analysis of the atmospheric helium isotopic composition: Geochemical and environmental implications." Geochimica et Cosmochimica Acta 237 (2018): 120–130.
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Broadley, M. W., H. Hagi, R. Burgess, D. Zedgenizov, S. Mikhail, M. Almayrac, A. Ragozin, B. Pomazansky, and H. Sumino. "Plume-lithosphere interaction, and the formation of fibrous diamonds." Geochemical Perspectives Letters 2018, no. 8 (2018): 26–30.
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Delon, R., S. Demouchy, Y. Marrocchi, M. A. Bouhifd, F. Barou, P. Cordier, A. Addad, and P. G. Burnard. "Helium incorporation and diffusion in polycrystalline olivine." Chemical Geology 488 (2018): 105–124.
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Füri, E., E. Deloule, and C. Dalou. "Nitrogen abundance and isotope analysis of silicate glasses by secondary ionization mass spectrometry." Chemical Geology 493 (2018): 327–337.
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Füri, E., L. Zimmermann, and A. E. Saal. "Apollo 15 green glass He-Ne-Ar signatures – In search for indigenous lunar noble gases." Geochemical Perspectives Letters 8 (2018): 1–5.
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Florentin, L., E. Deloule, F. Faure, and D. Mangin. "Chemical 3D-imaging of glass inclusions from allende (CV3) olivine via SIMS: A new insight on chondrule formation conditions." Geochimica et Cosmochimica Acta 230 (2018): 83–93.
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Holycross, M. E., E. B. Watson, F. M. Richter, and J. Villeneuve. "Diffusive fractionation of Li isotopes in wet, highly silicic melts." Geochemical Perspectives Letters 6 (2018): 39–42.
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Huang, J., Z. Xiao, J. Flahaut, M. Martinot, J. Head, X. Xiao, M. Xie, and L. Xiao. "Geological characteristics of Von Kármán Crater, Northwestern South Pole‐Aitken Basin: Chang'E‐4 Landing site region." Journal of Geophysical Research (Planets) (2018).
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Marrocchi, Y., D. V. Bekaert, and L. Piani. "Origin and abundance of water in carbonaceous asteroids." Earth and Planetary Science Letters 482 (2018): 23–32.
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Marrocchi, Y., J. Villeneuve, V. Batanova, L. Piani, and E. Jacquet. "Oxygen isotopic diversity of chondrule precursors and the nebular origin of chondrules." Earth and Planetary Science Letters 496 (2018): 132–141.
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Marty, B., G. Avice, D. V. Bekaert, and M. W. Broadley. "Salinity of the Archaean oceans from analysis of fluid inclusions in quartz." Comptes Rendus Geoscience 350 (2018): 154–163.
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Morino, P., G. Caro, and L. Reisberg. "Differentiation mechanisms of the early Hadean mantle: Insights from combined 176 Hf- 142,143 Nd signatures of Archean rocks from the Saglek Block." Geochimica et Cosmochimica Acta 240 (2018): 43–63.
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