The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc Crust

Autores
Otamendi, Juan Enrique; Escribano, Facundo Agustín; Guerreiro, Tomás; Camilletti, Giuliano Cesar; Giovanini, Emanuel; Cristofolini, Eber Ariel; Bachmann, Olivier; Galli, Andrea; Bergantz, George W.
Año de publicación
2026
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Famatinian arc provides an extensive cross section through an ancient magmatic arc, elucidating the evolution of subduction-related magmatism and the generation of the continental crust. Although the mantle-crust transition is not exposed, integrated field observations and laboratory analyses allow the reconstruction of a spatiotemporal model for the arc's thermal structure and magmatic evolution. The resulting cross section demonstrates that depth-dependent petrological processes govern igneous differentiation. At greater depths, crystallization-driven fractionation and melt-mush interactions produce variations within mafic-ultramafic complexes. From the middle crust to volcanic levels, crystal fractionation, partial melting, and the reactive assimilation of prearc host crust drive the evolution toward intermediate and silicic compositions. Comparative analysis with other ancient arcs indicates that subduction-related plutonic-volcanic columns are density filtered and organized as vertically interconnected systems. Within these trans-lithospheric magmatic columns, the influx of mantle-derived melts, multi-level crystal-melt-fluid fractionation, and assimilation of preexisting crust occur simultaneously in space and time from source to surface. ▪ The Famatinian arc represents a 30-km-thick segment of Ordovician arc crust that has undergone differential uplift along several hundred kilometers of its paleo-axis. ▪ Mantle melt input, polybaric igneous fractionation, and intracrustal melting controlled lithological and chemical diversification across the magmatic column. ▪ Extensive igneous columns transition from melt-dominated magmatic systems in the middle crust to crystal-rich mushy reservoirs in the upper crust. ▪ Comparable lithological architectures in ancient arc sections allow assessment of how the building blocks of continental crust develop over convergent plate margins.
Fil: Otamendi, Juan Enrique. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente.; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina
Fil: Escribano, Facundo Agustín. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente.; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina
Fil: Guerreiro, Tomás. University of Arizona; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente; Argentina
Fil: Camilletti, Giuliano Cesar. Eidgenossische Technische Hochschule zurich (eth Zurich);
Fil: Giovanini, Emanuel. Eidgenossische Technische Hochschule zurich (eth Zurich);
Fil: Cristofolini, Eber Ariel. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente.; Argentina
Fil: Bachmann, Olivier. Eidgenossische Technische Hochschule zurich (eth Zurich);
Fil: Galli, Andrea. Eidgenossische Technische Hochschule zurich (eth Zurich);
Fil: Bergantz, George W.. University of Washington; Estados Unidos
Materia
SUBDUCTION ZONE
MAGMATIC COLUMN
ARC GEOTHERM
BATHOLITH
FAMATINIAN ARC
CONTINENTAL CRUST
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/291413
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/291413
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc CrustOtamendi, Juan EnriqueEscribano, Facundo AgustínGuerreiro, TomásCamilletti, Giuliano CesarGiovanini, EmanuelCristofolini, Eber ArielBachmann, OlivierGalli, AndreaBergantz, George W.SUBDUCTION ZONEMAGMATIC COLUMNARC GEOTHERMBATHOLITHFAMATINIAN ARCCONTINENTAL CRUSThttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Famatinian arc provides an extensive cross section through an ancient magmatic arc, elucidating the evolution of subduction-related magmatism and the generation of the continental crust. Although the mantle-crust transition is not exposed, integrated field observations and laboratory analyses allow the reconstruction of a spatiotemporal model for the arc's thermal structure and magmatic evolution. The resulting cross section demonstrates that depth-dependent petrological processes govern igneous differentiation. At greater depths, crystallization-driven fractionation and melt-mush interactions produce variations within mafic-ultramafic complexes. From the middle crust to volcanic levels, crystal fractionation, partial melting, and the reactive assimilation of prearc host crust drive the evolution toward intermediate and silicic compositions. Comparative analysis with other ancient arcs indicates that subduction-related plutonic-volcanic columns are density filtered and organized as vertically interconnected systems. Within these trans-lithospheric magmatic columns, the influx of mantle-derived melts, multi-level crystal-melt-fluid fractionation, and assimilation of preexisting crust occur simultaneously in space and time from source to surface. ▪ The Famatinian arc represents a 30-km-thick segment of Ordovician arc crust that has undergone differential uplift along several hundred kilometers of its paleo-axis. ▪ Mantle melt input, polybaric igneous fractionation, and intracrustal melting controlled lithological and chemical diversification across the magmatic column. ▪ Extensive igneous columns transition from melt-dominated magmatic systems in the middle crust to crystal-rich mushy reservoirs in the upper crust. ▪ Comparable lithological architectures in ancient arc sections allow assessment of how the building blocks of continental crust develop over convergent plate margins.Fil: Otamendi, Juan Enrique. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente.; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; ArgentinaFil: Escribano, Facundo Agustín. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente.; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; ArgentinaFil: Guerreiro, Tomás. University of Arizona; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente; ArgentinaFil: Camilletti, Giuliano Cesar. Eidgenossische Technische Hochschule zurich (eth Zurich);Fil: Giovanini, Emanuel. Eidgenossische Technische Hochschule zurich (eth Zurich);Fil: Cristofolini, Eber Ariel. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente.; ArgentinaFil: Bachmann, Olivier. Eidgenossische Technische Hochschule zurich (eth Zurich);Fil: Galli, Andrea. Eidgenossische Technische Hochschule zurich (eth Zurich);Fil: Bergantz, George W.. University of Washington; Estados UnidosAnnual Reviews2026-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/291413Otamendi, Juan Enrique; Escribano, Facundo Agustín; Guerreiro, Tomás; Camilletti, Giuliano Cesar; Giovanini, Emanuel; et al.; The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc Crust; Annual Reviews; Annual Review of Earth and Planetary Sciences; 54; 1; 5-2026; 647-6810084-65971545-4495CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.annualreviews.org/content/journals/10.1146/annurev-earth-032524-113824info:eu-repo/semantics/altIdentifier/doi/10.1146/annurev-earth-032524-113824info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T15:26:22Zoai:ri.conicet.gov.ar:11336/291413instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-08-25 15:26:23.175CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc Crust
title The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc Crust
spellingShingle The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc Crust
Otamendi, Juan Enrique
SUBDUCTION ZONE
MAGMATIC COLUMN
ARC GEOTHERM
BATHOLITH
FAMATINIAN ARC
CONTINENTAL CRUST
title_short The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc Crust
title_full The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc Crust
title_fullStr The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc Crust
title_full_unstemmed The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc Crust
title_sort The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc Crust
dc.creator.none.fl_str_mv Otamendi, Juan Enrique
Escribano, Facundo Agustín
Guerreiro, Tomás
Camilletti, Giuliano Cesar
Giovanini, Emanuel
Cristofolini, Eber Ariel
Bachmann, Olivier
Galli, Andrea
Bergantz, George W.
author Otamendi, Juan Enrique
author_facet Otamendi, Juan Enrique
Escribano, Facundo Agustín
Guerreiro, Tomás
Camilletti, Giuliano Cesar
Giovanini, Emanuel
Cristofolini, Eber Ariel
Bachmann, Olivier
Galli, Andrea
Bergantz, George W.
author_role author
author2 Escribano, Facundo Agustín
Guerreiro, Tomás
Camilletti, Giuliano Cesar
Giovanini, Emanuel
Cristofolini, Eber Ariel
Bachmann, Olivier
Galli, Andrea
Bergantz, George W.
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv SUBDUCTION ZONE
MAGMATIC COLUMN
ARC GEOTHERM
BATHOLITH
FAMATINIAN ARC
CONTINENTAL CRUST
topic SUBDUCTION ZONE
MAGMATIC COLUMN
ARC GEOTHERM
BATHOLITH
FAMATINIAN ARC
CONTINENTAL CRUST
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Famatinian arc provides an extensive cross section through an ancient magmatic arc, elucidating the evolution of subduction-related magmatism and the generation of the continental crust. Although the mantle-crust transition is not exposed, integrated field observations and laboratory analyses allow the reconstruction of a spatiotemporal model for the arc's thermal structure and magmatic evolution. The resulting cross section demonstrates that depth-dependent petrological processes govern igneous differentiation. At greater depths, crystallization-driven fractionation and melt-mush interactions produce variations within mafic-ultramafic complexes. From the middle crust to volcanic levels, crystal fractionation, partial melting, and the reactive assimilation of prearc host crust drive the evolution toward intermediate and silicic compositions. Comparative analysis with other ancient arcs indicates that subduction-related plutonic-volcanic columns are density filtered and organized as vertically interconnected systems. Within these trans-lithospheric magmatic columns, the influx of mantle-derived melts, multi-level crystal-melt-fluid fractionation, and assimilation of preexisting crust occur simultaneously in space and time from source to surface. ▪ The Famatinian arc represents a 30-km-thick segment of Ordovician arc crust that has undergone differential uplift along several hundred kilometers of its paleo-axis. ▪ Mantle melt input, polybaric igneous fractionation, and intracrustal melting controlled lithological and chemical diversification across the magmatic column. ▪ Extensive igneous columns transition from melt-dominated magmatic systems in the middle crust to crystal-rich mushy reservoirs in the upper crust. ▪ Comparable lithological architectures in ancient arc sections allow assessment of how the building blocks of continental crust develop over convergent plate margins.
Fil: Otamendi, Juan Enrique. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente.; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina
Fil: Escribano, Facundo Agustín. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente.; Argentina. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas, Fisicoquímicas y Naturales. Departamento de Geología; Argentina
Fil: Guerreiro, Tomás. University of Arizona; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente; Argentina
Fil: Camilletti, Giuliano Cesar. Eidgenossische Technische Hochschule zurich (eth Zurich);
Fil: Giovanini, Emanuel. Eidgenossische Technische Hochschule zurich (eth Zurich);
Fil: Cristofolini, Eber Ariel. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Ciencias de la Tierra, Biodiversidad y Ambiente.; Argentina
Fil: Bachmann, Olivier. Eidgenossische Technische Hochschule zurich (eth Zurich);
Fil: Galli, Andrea. Eidgenossische Technische Hochschule zurich (eth Zurich);
Fil: Bergantz, George W.. University of Washington; Estados Unidos
description The Famatinian arc provides an extensive cross section through an ancient magmatic arc, elucidating the evolution of subduction-related magmatism and the generation of the continental crust. Although the mantle-crust transition is not exposed, integrated field observations and laboratory analyses allow the reconstruction of a spatiotemporal model for the arc's thermal structure and magmatic evolution. The resulting cross section demonstrates that depth-dependent petrological processes govern igneous differentiation. At greater depths, crystallization-driven fractionation and melt-mush interactions produce variations within mafic-ultramafic complexes. From the middle crust to volcanic levels, crystal fractionation, partial melting, and the reactive assimilation of prearc host crust drive the evolution toward intermediate and silicic compositions. Comparative analysis with other ancient arcs indicates that subduction-related plutonic-volcanic columns are density filtered and organized as vertically interconnected systems. Within these trans-lithospheric magmatic columns, the influx of mantle-derived melts, multi-level crystal-melt-fluid fractionation, and assimilation of preexisting crust occur simultaneously in space and time from source to surface. ▪ The Famatinian arc represents a 30-km-thick segment of Ordovician arc crust that has undergone differential uplift along several hundred kilometers of its paleo-axis. ▪ Mantle melt input, polybaric igneous fractionation, and intracrustal melting controlled lithological and chemical diversification across the magmatic column. ▪ Extensive igneous columns transition from melt-dominated magmatic systems in the middle crust to crystal-rich mushy reservoirs in the upper crust. ▪ Comparable lithological architectures in ancient arc sections allow assessment of how the building blocks of continental crust develop over convergent plate margins.
publishDate 2026
dc.date.none.fl_str_mv 2026-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/291413
Otamendi, Juan Enrique; Escribano, Facundo Agustín; Guerreiro, Tomás; Camilletti, Giuliano Cesar; Giovanini, Emanuel; et al.; The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc Crust; Annual Reviews; Annual Review of Earth and Planetary Sciences; 54; 1; 5-2026; 647-681
0084-6597
1545-4495
CONICET Digital
CONICET
url http://hdl.handle.net/11336/291413
identifier_str_mv Otamendi, Juan Enrique; Escribano, Facundo Agustín; Guerreiro, Tomás; Camilletti, Giuliano Cesar; Giovanini, Emanuel; et al.; The Central Segment of the Famatinian Arc: Insights into the Construction of Ancient Arc Crust; Annual Reviews; Annual Review of Earth and Planetary Sciences; 54; 1; 5-2026; 647-681
0084-6597
1545-4495
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.annualreviews.org/content/journals/10.1146/annurev-earth-032524-113824
info:eu-repo/semantics/altIdentifier/doi/10.1146/annurev-earth-032524-113824
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Annual Reviews
publisher.none.fl_str_mv Annual Reviews
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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