HYDRaTE – Distribution of HYdrogen in the protoplanetary Disk and deliveRy to the Terrestrial planEts


The HYDRaTE project started at the beginning of 2020. This project is funded by the Agence Nationale de la Recherche for 4 years (ANR JCJC: ANR-19-CE31-0027-01).

Summary of the objectives

Although hydrogen is the most abundant element of the Solar System, little is known about its distribution among planetary materials. In particular, the question of the origin of hydrogen -and thus water- on Earth, Mars or the Moon remains highly debated. The HYDRaTE project proposes to use primitive meteorites, chondrites, as witnesses for the building blocks of planets to bring clues on the hydrogen distribution in the protoplanetary disk materials. Using state-of-the-art instruments, such as the secondary ion mass spectrometers IMS-1280 at CRPG, and experimental simulations, HYDRaTE aims at quantifying the hydrogen distribution and isotopic composition among the large range of H-bearing chondritic phases (hydrated minerals, organics and chondrule silicates). Such a global and systematic characterization will be used to model the contributions of chondritic materials to the budget of volatile elements of Earth and other terrestrial planets.

Main collaborators

Nathalie Bolfan-Casanova (LMV), Nordine Bouden (CRPG), Camille Cartier (CRPG), Jean Duprat (CSNSM-MNHN), Andrei Gurenko (CRPG), Emmanuel Jacquet (IMPMC-MNHN), Delphine Lequin (CRPG), Yves Marrocchi (CRPG), Bernard Marty (CRPG), Laurent Michot (Phenix-UPMC), Thomas Rigaudier (CRPG), Laurent Tissandier (CRPG), Johan Villeneuve (CRPG)

Progress and results will be presented here in the course of the project ! 


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. DOI: 10.1016/j.gca.2020.05.007

Piani L., Marrocchi Y. , Rigaudier T. , Vacher L.G. , Thomassin D., Marty B. (2020) Earth’s water may have been inherited from material similar to enstatite chondrite meteorites. Science, Vol. 369, Issue 6507, pp. 1110-1113. DOI: 10.1126/science.aba1948

Piani L., Marrocchi Y., Vacher L. G., Yurimoto H., Bizzarro M. (2021) Origin of hydrogen isotopic variations in chondritic water and organics. Earth and Planetary Science Letters, Vol. 567, 117008. DOI: doi.org/10.1016/j.epsl.2021.117008

Hewins R.H., Zanetta P.-M., Zanda B., Le Guillou C., Gattacceca J., Sognzoni C., Pont S., Piani L., Rigaudier T., Leroux H., Brunetto R., Maupin R., Djouadi Z., Bernard S., Deldicque D., Malarewicz V., Dionnet Z., Aléon-Toppani A., King A., Borondics F. (2021) NORTHWEST AFRICA (NWA) 12563 and ungrouped C2 chondrites: Alteration styles and relationships to asteroids. Geochimica et Cosmochimica Acta, Vol. 311, 238-273. DOI: 10.1016/j.gca.2021.06.035

Broadley M.W., Bekaert D.V., Piani L., Füri E., Marty B. (2022). Origin of life-forming volatile elements in the inner Solar System. Nature 611, 245–255. DOI: 10.1038/s41586-022-05276-x

Izidoro A., Piani L. (2022) Origin of Water in the Terrestrial Planets: Insights from Meteorite Data and Planet Formation Models. Elements 2022; 18 (3): 181–186. doi: 10.2138/gselements.18.3.181


Journées des utilisateurs SIMS francophones, Pau 2022 – Teneurs en H2O & CO2 dans les verres : Effets de matrice vs. Conditions analytiques

Meteoritical Society Meeting (MetSoc), Glasgow 2022 – Piani L., Marrocchi Y., Nagashima K., Kawasaki N., Sakamoto N., Bajo K., The Hayabusa2-initial-analysis chemistry team, The Hayabusa2-initial-analysis core, and Yurimoto H. Hydrogen isotopic composition of water in Ryugu samples returned by the Hayabusa 2 mission.

Colloque PNP, Lyon 2022 – Piani L., Marrocchi Y. Origine des variations isotopiques de l’hydrogène dans l’eau et la matière organique des chondrites

Journées des utilisateurs SIMS francophones, Paris 2021 – Mesure du D/H de l’eau dans des météorites primitives par l’utilisation de droites de mélange

Goldschmidt conference 2021 (invited talk) – Piani L., Marrocchi Y., Rigaudier T., Vacher L. G., Thomassin D., Marty M. Earth’s water may have been inherited from material similar to enstatite chondrite meteorites.