Opendata, web and dolomites


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

Total Cost €


EC-Contrib. €






 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.

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

Project "OXYGEN" data sheet

The following table provides information about the project.


Organization address
city: GENEVE
postcode: 1211

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


Take a look of project's partnership.

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


 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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