The orientation of intra-arc crustal fault systems influences the copper budget of magmatic-hydrothermal fluids

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dc.contributor.authorTardani, Daniele
dc.contributor.authorTassara, Santiago
dc.contributor.authorSanchez-Alfaro, Pablo
dc.contributor.authorReich, Martin
dc.contributor.authorPerez-Flores, Pamela
dc.contributor.authorRobidoux, Philippe
dc.contributor.authorContreras, Claudio
dc.contributor.authorPinti, Daniele L.
dc.contributor.authorCembrano, Jose
dc.contributor.authorAgue, Jay. J.
dc.date.accessioned2025-01-20T16:09:37Z
dc.date.available2025-01-20T16:09:37Z
dc.date.issued2024
dc.description.abstractSome of the largest magmatic-hydrothermal copper ore deposits and deposit clusters are associated with arc-oblique fault systems. Whether this structural context impacts the geochemistry of hydrothermal fluids, including their copper contents, remains unknown. Here, we investigate the copper concentration and helium isotope signature of geothermal fluids as modern analogs of hydrothermal ore deposits in the Andes of central-southern Chile. We show that fault systems broadly parallel to the regional stress field facilitate the early release of fluids from deep primitive magmas. By contrast, fault systems oblique to the regional stress field prevent the early escape of fluids and promote magmatic enrichment in copper, volatiles, and ligands, enhancing the potential to form copper deposits. We conclude that the orientation of fault systems actively influences the copper budget of ascending hydrothermal fluids, explaining the contrasting distribution of metals along distinct structures often observed in porphyry-epithermal systems and other types of magmatic-hydrothermal deposits.
dc.description.abstractThe enrichment of copper in magmatic hydrothermal fluids is influenced by the orientation of fault systems in arcs, according to geochemical analyses of gases and hot spring waters from active fumarole fields in the Southern Volcanic Zone of Chile.
dc.fuente.origenWOS
dc.identifier.doi10.1038/s43247-024-01629-8
dc.identifier.eissn2662-4435
dc.identifier.urihttps://doi.org/10.1038/s43247-024-01629-8
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90162
dc.identifier.wosidWOS:001303223300004
dc.issue.numero1
dc.language.isoen
dc.revistaCommunications earth & environment
dc.rightsacceso restringido
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleThe orientation of intra-arc crustal fault systems influences the copper budget of magmatic-hydrothermal fluids
dc.typeartículo
dc.volumen5
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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