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Cycling of chalcophile metals in subduction zones

Applicant Chiaradia Massimo
Number 169032
Funding scheme Project funding
Research institution Département des sciences de la Terre Université de Genève
Institution of higher education University of Geneva - GE
Main discipline Geochemistry
Start/End 01.01.2017 - 30.04.2021
Approved amount 286'919.00
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Keywords (11)

subduction; post-subduction; porphyry copper; sulphide saturation; magmatic sulphides; experimental petrology; Andes; Ecuador; Turkey; Kisladag; isotopes

Lay Summary (French)

Lead
Les gisements de porphyre de cuivre, principale source de Cu (et de fournisseurs importants de Mo et de métaux précieux) pour notre société, sont génétiquement associés à des roches magmatiques des marges convergentes, dans des contextes de subduction et de post-subduction. Ces roches magmatiques contiennent invariablement des sulfures magmatiques. Le rôle des sulfures magmatiques dans la formation ou non d'un porphyre cuprifère n'est pas bien compris, certains chercheurs soulignant un rôle positif fondamental et d'autres les considérant comme des acteurs négatifs parce qu'ils séquestrent les métaux et les rendent indisponibles aux fluides minéralisateurs libérés par les magmas et formant la minéralisation.
Lay summary

Chapeau

Les gisements de porphyre de cuivre, principale source de Cu (et de fournisseurs importants de Mo et de métaux précieux) pour notre société, sont génétiquement associés à des roches magmatiques des marges convergentes, dans des contextes de subduction et de post-subduction. Ces roches magmatiques contiennent invariablement des sulfures magmatiques. Le rôle des sulfures magmatiques dans la formation ou non d'un porphyre cuprifère n'est pas bien compris, certains chercheurs soulignant un rôle positif fondamental et d'autres les considérant comme des acteurs négatifs parce qu'ils séquestrent les métaux et les rendent indisponibles aux fluides minéralisateurs libérés par les magmas et formant la minéralisation.

 

Contenu et objectifs du travail de recherché

Le but de ce projet est d'étudier les processus de saturation des sulfures lors de l'évolution magmatique dans les magmas de subduction (type Andin) et post-subduction. En utilisant la pétrologie expérimentale, nous voulons également étudier la possibilité de recycler les sulfures magmatiques, formés précédemment, par des magmas ultérieurs comme processus potentiel conduisant à la formation de magmas fertiles.

 

Contexte scientifique et social du projet de recherche

Grâce à cette information, nous pourrons mieux comprendre le rôle joué par les sulfures magmatiques comme acteurs positifs ou négatifs dans la formation des gisements de porphyres de Cu.
Direct link to Lay Summary Last update: 05.12.2016

Responsible applicant and co-applicants

Employees

Publications

Publication
Geochemical and isotopic variations in a frontal arc volcanic cluster (Chachimbiro-Pulumbura-Pilavo-Yanaurcu, Ecuador)
Chiaradia Massimo, Bellver-Baca Maria Teresa, Valverde Viviana, Spikings Richard (2021), Geochemical and isotopic variations in a frontal arc volcanic cluster (Chachimbiro-Pulumbura-Pilavo-Yanaurcu, Ecuador), in Chemical Geology, 574, 120240-120240.
Gold endowments of porphyry deposits controlled by precipitation efficiency
Chiaradia Massimo (2020), Gold endowments of porphyry deposits controlled by precipitation efficiency, in Nature Communications, 11(1), 248-248.
How Much Water in Basaltic Melts Parental to Porphyry Copper Deposits?
Chiaradia Massimo (2020), How Much Water in Basaltic Melts Parental to Porphyry Copper Deposits?, in Frontiers in Earth Science, 8, 1-12.
Effects of aseismic ridge subduction on the geochemistry of frontal arc magmas
Chiaradia Massimo, Müntener Othmar, Beate Bernardo (2020), Effects of aseismic ridge subduction on the geochemistry of frontal arc magmas, in Earth and Planetary Science Letters, 531, 115984-115984.
Magmatic sulfides in high-potassium calc-alkaline to shoshonitic and alkaline rocks
Georgatou Ariadni A., Chiaradia Massimo (2020), Magmatic sulfides in high-potassium calc-alkaline to shoshonitic and alkaline rocks, in Solid Earth, 11(1), 1-21.
Geochemistry and isotope composition (Sr, Pb, δ66Zn) of Vulcano fumaroles (Aeolian Islands, Italy)
Chiaradia Massimo, Pujol-Solà Núria, Farré-de-Pablo Julia, Aiuppa Alessandro, Paonita Antonio, Rizzo Andrea Luca, Brusca Lorenzo (2018), Geochemistry and isotope composition (Sr, Pb, δ66Zn) of Vulcano fumaroles (Aeolian Islands, Italy), in Chemical Geology, 493, 153-171.
Magmatic sulphides in Quaternary Ecuadorian arc magmas
Georgatou Ariadni, Chiaradia Massimo, Rezeau Hervé, Wälle Markus (2018), Magmatic sulphides in Quaternary Ecuadorian arc magmas, in Lithos, 296-299, 580-599.
Stochastic modelling of deep magmatic controls on porphyry copper deposit endowment
Chiaradia M., Caricchi L. (2017), Stochastic modelling of deep magmatic controls on porphyry copper deposit endowment, in Scientific Reports, 7(44523), 1-11.

Datasets

Geochemical data Table

Author Chiaradia, Massimo
Publication date 09.12.2019
Persistent Identifier (PID) 10.6084/m9.figshare.7813940
Repository Figshare
Abstract
Table 1: Geochemical and radiogenic isotope data of 86 new rocks from 13 volcanic edifices of Ecuador and Colombia produced in this study. Major and minor elements are expressed as oxides (wt.%) whereas trace elements are expressed as ppm; bdl = below detection limit; nm = not measured. Major and minor elements were measured by XRF, whereas all trace elements reported were measured by LA-ICPMS, except trace elements of Casitagua and Illiniza volcanoes which were measured by XRF. Radiogeni cisotopes were measured on a MC-ICPMS Neptune Plus. The epsilon-Nd value reported is calculated with respect to the CHUR reservoir, assuming a 143Nd/144Nd value of CHUR of 0.512638 (Wasserburg et al., 1981; Hamilton et al., 1983).

Collaboration

Group / person Country
Types of collaboration
School of Earth and Environmental Sciences, Seoul National University Korean Republic (South Korea) (Asia)
- Research Infrastructure
The Open University Great Britain and Northern Ireland (Europe)
- Research Infrastructure
Dr. Okan Delibas, Hacettepe University, Ankara Turkey (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Dr. M. Wälle and Prof. C. Heinrich, ETHZ Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Universität Bayreuth - Bayerisches Geoinstitut Germany (Europe)
- Research Infrastructure
Prof. Othmar Muntener, University of Lausanne Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Invited talk Individual talk Controls on the Formation of Porphyry Copper and Gold Deposits 08.05.2021 Beijing (virtual), China Chiaradia Massimo;
Invited talk Individual talk Controls on the Formation of Porphyry Copper and Gold Deposits 12.03.2021 Dublin (virtual), Ireland Chiaradia Massimo;
AESC 2021 Talk given at a conference Controls on gold endowments of porphyry deposits 09.02.2021 Australia (virtual), Australia Chiaradia Massimo;
Ore Deposit Hub Talk given at a conference Invited Panelist for discussion of “Insights from high-precision zircon petrochronology into the magmatic systems sourcing porphyry Cu deposits” 09.12.2020 Geneva (virtual), Switzerland Chiaradia Massimo;
proEXPLO 2021 Talk given at a conference Controls on the Formation of Porphyry Copper and Gold Deposits 29.09.2020 Lima (virtual), Peru Chiaradia Massimo;
SEG Thayer Lindsley Visiting Lecturer Individual talk Geochronology of Porphyry Deposits 19.05.2020 Pontificia Universidad Católica del Peru, Lima (virtual), Peru Chiaradia Massimo;
SEG Thayer Lindsley Visiting Lecturer Individual talk Geochemistry and Petrogenesis of Magmas Associated with Porphyry Deposits 15.05.2020 Arequipa (virtual), Peru Chiaradia Massimo;
PDAC 2021 Talk given at a conference Magmatic controls on the formation of porphyry Cu-Au deposits 08.03.2020 Toronto (virtual), Canada Chiaradia Massimo;
SEG Thayer Lindsley Visiting Lecturer Individual talk Geochronology of Porphyry Deposits 28.02.2020 UoA Edmonton, Canada Chiaradia Massimo;
SEG Thayer Lindsley Visiting Lecturer Individual talk Controls on the Formation of Porphyry Copper and Gold Deposits 25.02.2020 Sudbury Geological Discussion Group (SGDG), Canada Chiaradia Massimo;
SEG Thayer Lindsley Visiting Lecturer Individual talk Geochemistry and Petrogenesis of Magmas Associated with Porphyry Deposits 25.02.2020 Laurentian University - Sudbury, Canada Chiaradia Massimo;
SEG Thayer Lindsley Visiting Lecturer Individual talk Controls on the Formation of Porphyry Copper and Gold Deposits 21.02.2020 UQAC - Chicoutimi, Canada Chiaradia Massimo;
SEG Thayer Lindsley Visiting Lecturer Individual talk Controls on the Formation of Porphyry Copper and Gold Deposits 20.02.2020 University of Laval - Quebec City, Canada Chiaradia Massimo;
SEG Thayer Lindsley Visiting Lecturer Individual talk Controls on the Formation of Porphyry Copper and Gold Deposits 18.02.2020 University of New Brunswick, Canada Chiaradia Massimo;


Knowledge transfer events

Active participation

Title Type of contribution Date Place Persons involved
TecDay 2019 Talk 04.04.2019 Collège de Candolle, Switzerland Georgatou Ariadni Afroditi; Chiaradia Massimo;
Nuit de la Science Performances, exhibitions (e.g. for education institutions) 01.07.2018 Genève, Switzerland Chiaradia Massimo;
TecDay 2018 Talk 12.04.2018 Collège Claparède, Switzerland Georgatou Ariadni Afroditi; Chiaradia Massimo;


Communication with the public

Communication Title Media Place Year
Talks/events/exhibitions Nuit de la Science Western Switzerland 2018

Awards

Title Year
SEG Thayer Lindsley Visiting Lecturer 2020. The role of the Thayer Lindsley Visiting Lecturer is to serve as an ambassador for SEG, lecturing at colleges and universities to inspire the next generation of economic geologists. The lecturer is selected based on a combination of scholarship, leadership, communication skills, and ability to engage and connect with a diverse group of students. Given the exceptional credentials of our nominees, this is quite an achievement. 2020

Associated projects

Number Title Start Funding scheme
162415 Magmas, ore deposits and geodynamic evolution at convergent margins 01.02.2016 Project funding

Abstract

In this project we want to investigate the behaviour of chalcophile metals during crustal evolution of subduction and post-subduction magmas. The main aim is to compare magmatic sulphide saturation processes and the behaviour of several chalcophile metals (Cu, Au, some PGEs) during magmatic evolution between subduction-related (Andean-type) and post-subduction magmas. The project will also investigate the possibility of recycling previously formed magmatic sulphides by subsequent magmatic pulses as a potential process leading to the formation of fertile magmas. Porphyry deposits occur in both above settings with similarities but also differences in terms of petrogenesis, geochemistry of the associated magmas and metal suites. The above aim will be addressed through detailed petrographic, mineral chemistry and Cu-Zn isotope investigations of magmatic sulphides and their host minerals as well as experimental petrology. The geological areas that will be investigated are the Ecuadorian Quaternary arc and three Miocene post-subduction volcano-plutonic complexes of Western Anatolia, one of which hosts the Au-porphyry of Kisladag (5.5 Moz Au).Because the fate of chalcophile metals during crustal magmatic evolution at convergent margins has been shown to have implications on the understanding of both crustal growth mechanisms and the formation of the largest natural suppliers of Cu to our society, teh so-called porphyry-type deposits, the overall results of this project have the potential to influence several fields of research in Earth Sciences.
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