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OXYGEN SIGNED

The redox evolution of arc magmas: from the oxygenation of the Earth’s atmosphere to the genesis of giant hydrothermal ore deposits

Total Cost €

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EC-Contrib. €

0

Partnership

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 OXYGEN project word cloud

Explore the words cloud of the OXYGEN project. It provides you a very rough idea of what is the project "OXYGEN" about.

mass    precision    differentiation    experiments    reactions    genesis    hydrothermal    unparalleled    magmatic    revolutionary    combine    agents    sulfur    oxygenation    pressures    instrumentation    subduction    time    employ    temperatures    concentrations    will    giant    crustal    aqueous    fluids    oxidized    oxygen    zones    minerals    first    place    magma    temperature    powerful    significantly    budget    magmas    magmatism    transfer    au    pt    chemical    prototype    quantified    critical    capability    arc    situ    deposits    silicate    pressure    origin    ratios    oxidation    computational    simulations    obtain    petrology    types    significance    analytical    speciation    cell    atmosphere    prospective    experimentally    lower    regions    volatile    redox    combination    evolution    isotope    melt    similarly    despite    responsible    upper    quantitative    generation    voluminous    pd    rely    potentially    ore    debated    pinpoint    questions    subsequently    spheres    apparatus    re    spectroscopic    inclusions    degassing    earth   

Project "OXYGEN" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITE DE GENEVE 

Organization address
address: RUE DU GENERAL DUFOUR 24
city: GENEVE
postcode: 1211
website: www.unige.ch

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Switzerland [CH]
 Total cost 2˙406˙972 €
 EC max contribution 2˙406˙972 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2019-COG
 Funding Scheme ERC-COG
 Starting year 2020
 Duration (year-month-day) from 2020-11-01   to  2025-10-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITE DE GENEVE CH (GENEVE) coordinator 2˙406˙972.00

Map

 Project objective

Arc magmatism at subduction zones is responsible for much of the mass transfer of chemical elements between the Earth’s lower and upper spheres. Arc magmas are significantly more oxidized and richer in volatile elements than other voluminous magma types on Earth. These characteristics promote the genesis of large magmatic-hydrothermal ore deposits and potentially also the build-up of the oxygen budget of the Earth’s atmosphere. Despite its great significance, the origin of the higher oxidation state of arc magmas is still one of the most debated questions in petrology. I will combine high-pressure-temperature experiments, field-based studies and computational simulations to obtain quantitative understanding of redox reactions taking place during magma genesis, differentiation and degassing. Subsequently, I will apply this new knowledge to assess if arc magmatism may have been a key to the oxygenation of the Earth’s atmosphere, and to pinpoint the most prospective regions for the generation of giant ore deposits. Most experiments will rely on revolutionary new instrumentation and methodologies, which I have recently developed or will develop as a part of the project. For example, we will determine for the first time the speciation of sulfur in aqueous fluids in situ at magmatic temperatures and upper crustal pressures by using a prototype spectroscopic cell, so that its critical role in redox transfer and ore genesis can be quantified. Similarly, the field-based studies will employ a new method to constrain the redox evolution of magmas with unparalleled precision, which will be developed experimentally by using a prototype high-pressure apparatus with a unique capability to control redox conditions. In addition, these will also apply a powerful combination of novel and challenging analytical methods including the analysis of Au, Pt, Pd and Re concentrations and S isotope ratios in silicate melt inclusions in minerals to identify the key agents of magma oxidation.

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The information about "OXYGEN" are provided by the European Opendata Portal: CORDIS opendata.

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