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 ! 


  1. 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
  2. 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
  3. Piani L., Marrocchi Y., Vacher L. G., Yurimoto H., Bizzarro M. (2020) 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
  4. 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