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Institut de minéralogie, de physique des matériaux et de cosmochimie

Jérôme Aléon


  • SIMS and NanoSIMS analysis.
  • Meteorites, interplanetary and cometary dust.
  • Aerosols and atmospheric dust.
  • Isotopic geochemistry and cosmochemistry of light elements.
  • Formation of the Solar System and telluric planets.
  • Origin of planetary volatiles.

Contact Informations

Phone : Office: 33 (0)1 71 21 47 33 - Nanosims lab: 33 (0)1 40 79 53 69
Mail(s) : jerome.aleon@mnhn.fr

Function and attachment

CNRS Researcher (CR1, HdR)



PhD thesis D. Levy (beginning 2016) - co-supervisor A. Aléon-Toppani, IAS, Univ P7, "Mineralogy and isotopic composition of secondary minerals in the first solar system rocks: water vapor near the young Sun ?"

PhD thesis E. Taillifet (defended 2014) - co-supervisor S. Charnoz, SAp CEA, Univ P7, "Origin of the first solar system solids: numerical modeling and comparison with chondritic data"

PhD thesis E. Charon (defended 2012) - co-supervisor J.-N. Rouzaud, Laboratoire de Géologie, ENS Paris, "Geochemistry and nanostructures of carbons in primitive achondrites: search for pre-accretionary signatures by SIMS, Raman and HRTEM"


2015-present. CNRS researcher, IMPMC, Paris, France

2006-2014. CNRS researcher, CSNSM, Orsay, France, (Solid State Astrophysics group)

2005-2006. Sabbatical leave, Lawrence Livermore National Laboratory, Livermore, USA, Glenn T. Seaborg Institute, (Ian D. Hutcheon, NanoSIMS)

2003-2005. CNRS researcher, CRPG, Nancy, France, (Geochemistry group)

2002-2003. Post-doc, CRPG, Nancy, France, (M. Chaussidon, SIMS)

2001-2002. Post-doc, University of California Los Angeles, Los Angeles, USA, Earth and Space Sciences Department (K.D. McKeegan, SIMS)


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10 selected publications

J. Aléon (2016) Oxygen isotopes in the early protoplanetary disk inferred from pyroxene in a classical type B CAI. Earth and Planetary Science Letters 440, 62-70.

Charnoz, S., Aléon J., Chaumard, N. and Taillifet E. (2015) Growth of calcium-aluminum-rich inclusions by coagulation and fragmentation in a turbulent protoplanetary disk. Icarus 252, 440-453.

Charon, E., Aléon J. and Rouzaud J.-N. (2014) Impact delivery of organic matter on the acapulcoite-lodranite parent-body deduced from C, N isotopes and nanostructures of carbons in Acapulco and Lodran. Geochimica et Cosmochimica Acta 142, 224-239.

J. Aléon (2010) Multiple origins of nitrogen isotopic anomalies in meteorites and comets. The Astrophysical Journal 722, 1342-1351.

J. Aléon, C. Engrand, L. Leshin and K.D. McKeegan (2009) Oxygen isotopic composition of chondritic interplanetary dust particles : a genetic link between carbonaceous chondrites and comets. Geochimica et Cosmochimica Acta 73, 4558-4575.

S. B. Simon, D. J. Joswiak, H.A. Ishii, J.P. Bradley, M. Chi, L. Grossman, J. Aléon, D.E. Brownlee, S. Fallon, I.D. Hutcheon, G. Matrajt and K.D. McKeegan (2008) A refractory inclusion returned by Stardust from comet P81/Wild2. Meteoritics and Planetary Science 43, 1861-1877.

J. Aléon, A. El Goresy and E. Zinner (2007) Oxygen isotope heterogeneities in the earliest protosolar gas recorded in a meteoritic Calcium-Aluminum-rich Inclusion. Earth and Planetary Science Letters, 263, 114-127.

K. D. McKeegan, J. Aléon and 43 co-authors (2006) Light element isotopic compositions of cometary matter returned by the Stardust mission. Science 314, 1724-1728.

J. Aléon, F. Robert, J. Duprat and S. Derenne (2005) Extreme oxygen isotope ratios in the early Solar System. Nature 437, 385-388.

J. Aléon, M. Chaussidon, B. Marty, L. Schutz and R. Jaenicke (2002) Oxygen isotopes in single micrometer-sized quartz grains: tracing the source of Saharan dust over long-distance atmospheric transport. Geochimica et Cosmochimica Acta 66, 3351-3365.

Awards and Distinctions

Honorable mention of the Meteoritical Society for the Pellas-Ryder award 2001 for best student paper (Aléon et al. 2001 Geochim. Cosmochim Acta 65, 4399).

French and foreign diplomas

2011. Habilitation à Diriger des Recherches from the Paris 11 University "Isotopic cosmochemistry of light elements H, N, O in the protosolar nebula - Study of asteroidal and cometary rocks by SIMS"

2001. PhD from the INPL University, Nancy, Geosciences, "Development of the isotopic analysis of microparticles by SIMS: study of desert dust and interplanetary dust", CRPG, supervisors: M. Chaussidon, B. Marty.

1997. Master in Environmental Geosciences, INPL University, Nancy

1997. Engineer of the National School of Geology (Ecole Nationale Supérieure de Géologie)

Clubs, learned societies and associations

Member of the CAMPARIS facility committee

Cécile Duflot - 29/06/17

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