Project description
Reconstructing the origin and evolution of volatile elements on terrestrial planets
Volatile elements like water, carbon and nitrogen are crucial for habitable planetary conditions and regulate geodynamics and climate evolution. Their origins and evolution on terrestrial planets are unclear. The noble gases krypton and xenon serve as unique tracers of volatiles due to their inertness and isotopic signatures, yet their use – especially krypton’s – is limited by analytical challenges. The ERC-funded Kryptonis project aims to develop high-precision tools to analyse non-radiogenic krypton and xenon isotopes. By studying meteorites, including those from Mars, and sources of krypton and xenon in the Earth’s mantle, Kryptonis seeks to reveal the sources of planetary volatiles and their subduction-driven recycling in the Earth’s mantle.
Objective
Volatile elements, such as water, carbon and nitrogen, with low condensation temperatures, are needed to achieve and sustain habitable conditions. They also regulate planets geodynamics and climate evolution. However, how these volatiles were delivered to terrestrial planets and how they subsequently evolved is actively debated. Due to their inertness and high volatility, the noble gases krypton and xenon are unique geochemical tracers of volatiles. Their non-radiogenic isotopes have kept the signatures of the sources that delivered volatiles to planets and of the evolutionary processes subsequent to accretion, like recycling via subduction. Yet the non-radiogenic krypton and xenon isotopes have barely been used, in particular for krypton, due to major analytical challenges.
Here, I propose to develop an original geochemical tool, the non-radiogenic krypton and xenon isotopes. I will develop innovative analytical protocols to allow high precision measurements of these isotopes. The objectives are to determine the source(s) of volatiles for terrestrial planets and to assess when volatiles started being recycled into the Earths mantle via subduction. To achieve these goals, I will (i) determine the precise krypton and xenon compositions of different types of meteorites to evaluate whether one meteorite type can explain the signature of the Earths and Mars mantles, (ii) assess the volatile source(s) of the Martian mantle by studying the krypton and xenon compositions of the Martian meteorites shergottites and nakhlites, (iii) determine the krypton and xenon compositions of different Earths mantle sources, from the present-day to the Archean, by analyzing mid-ocean ridge basalts and granitoids. The analyses on granitoids will be combined with high-pressure high-temperature experiments to study the krypton and xenon elemental fractionation processes, which will be key to providing a global understanding of the measured fluid compositions in granitoids.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences chemical sciences inorganic chemistry noble gases
- natural sciences physical sciences astronomy planetary sciences meteorites
- natural sciences physical sciences astronomy planetary sciences planets
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.1 - European Research Council (ERC)
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Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-ERC - HORIZON ERC Grants
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2024-STG
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75794 PARIS
France
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