Objective
This project sets out to quantify the degassing behaviour of semi-volatile metals from magma. Metals are naturally present in trace quantities in magma and devolatilisation of magma is the main process of concentrating them into ore deposits and releasing them to the atmosphere and hydrosphere. Thus it presents the starting point of dispersion of sometimes highly toxic, but also economically no longer dispensable, metals into our environment. Magmatic volatiles (H2O, CO2, S, Cl, F), including metals will largely be lost from the magma upon eruption. However due to the relative timing of degassing and quenching by eruption trace amounts of volatiles remain frozen in time within the melt. For this project I suggest an inverse method to study magma degassing, whereby the variations in volatile concentrations within the melt will be studied. Such a method has the advantage that it can also be applied to study the output of unobserved or prehistoric eruptions, whereby the volcanic gas has long dissipated. A combined modeling, experimental and observational approach will be used. Metal emissions, particularly in dynamic systems, depend not only on the relative equilibrium partition coefficient of a metal between gas and melt phase, but also on the availability of metal and complexing agents. Thus diffusion of metal towards a gas bubble as it grows and ascends may become an important, limiting factor in the effective emission. In this project we will model the relative contributions of diffusion and equilibrium partitioning to volcanic emissions. Model results will be tested by experimentally decompressing a rhyolitic melt. The different diffusivities of various metals and their different behaviour during degassing provide an as yet little explored toolbox to study volcanic eruptions, in past, present and future.
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.
Topic(s)
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.
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.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP7-PEOPLE-2009-IIF
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Funding Scheme
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.
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
OX1 2JD Oxford
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.