Objective
Research objectives and content
The main objective of this project is to measure the argon solubility and its partition coeffient between crystals and melts during partial melting at high pressures (under upper mantle conditions: 5-25 GPa and 1500-2000 0C). Prior experiments on argon solubility at high pressures have been performed in piston-cylinder-type apparatus (by the Bristol group) and in the diamond anvil cell (Chamorro et al, 1996). Both methodologies present experimental limitations. I propose to carry out new experiments on argon solubility with a multi-anvil apparatus in the Geology Department at the University of Bristol.
Previous results for SiO2 and olivine melts show a linear increase in the argon solubility with pressure at low P (Henry's law), but above 5 GPa the argon solubility drops drastically. No data are avaible for argon solubility in crystals at very high pressure. The results of this project will have important consequences for mantle geochemistry and Earth evolution. Noble gas atoms dissolve in molten silicate with no chemical interaction, so that these data will provide important information on the interstitial structure of melts. The data are also necessary to formulate a complete thermodynamic model of the solubility of gases in magmas. Noble gases are trace elements in magmatic processes which are used as important tracers of mantle evolution. Therefore knowledge of solubility and partition coefficients are essential to constrain models of atmospheric evolution and mantle degassing.
Training content (objective, benefit and expected impact)
This research experience will complete and complement my prior training in the French system (Grandes Ecoles), and will help me firmly establish my research independence, in a different EC country.
Links with industry / industrial relevance (22)
irrelevant
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 earth and related environmental sciences geochemistry
- natural sciences chemical sciences inorganic chemistry noble gases
- natural sciences physical sciences thermodynamics
- natural sciences earth and related environmental sciences geology
- social sciences law
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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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.
Coordinator
BS8 1RJ Bristol
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.