Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic Complex

Autores
Gonzalez, Pablo Diego; Sato, Ana Maria; Llambias, Eduardo; Petronilho, Liliana
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The metamorphosed banded iron formation from the Nogolí Metamorphic Complex of western Sierra de San Luis, Eastern Sierras Pampeanas of Argentina (Nogolí area, 32°55'S-66°15'W) is classified as an oxide facies iron formation of Algoma Type, with a tectonic setting possibly associated with an island arc or back arc, on the basis of field mapping, mineral and textural arrangements and whole rock geochemical features. The origin of banded iron formation is mainly related to chemical precipitation of hydrogenous sediments from seawater in oceanic environments. The primary chemical precipitate is a result of solutions that represent mixtures of seawater and hydrothermal fluids, with significant dilution by mafic-ultramafic volcanic and siliciclastic materials. Multi-stage TDM model ages of 1670, 1854 and 1939 Ma and positive, mantle-like ξ Nd(1502) values of +3.8, +1.5 and +0.5 from the banded iron formation are around the range of those mafic to ultramafic meta-volcanic rocks of Nogolí Metamorphic Complex, which are between 1679 and 1765 Ma and +2.64 and +3.68, respectively. This Sm and Nd isotopic connection suggests a close genetic relationship between ferruginous and mafic-ultramafic meta-volcanic rocks, as part of the same island arc or back arc setting. A previous Sm-Nd whole rock isochron of ∼1.5 Ga performed on mafic-ultramafic meta-volcanic rocks led to the interpretation that chemical sedimentation as old as Mesoproterozoic is possible for the banded iron formation. A clockwise P-T path can be inferred for the regional metamorphic evolution of the banded iron formation, with three distinctive trajectories: (1) Relict prograde M1-M3 segment with gradual P and T increase from greenschist facies at M1 to amphibolite facies at M3. (2) Peak P-T conditions at high amphibolite-low granulite facies during M4. (3) Retrograde counterpart of M4, that returns from amphibolite facies and stabilizes at greenschist facies during M5. Each trajectory may be regarded as produced by different tectonic events related to the Pampean? (1) and the Famatinian (2 and 3) orogenies, during the Early to Middle Paleozoic. The Nogolí Metamorphic Complex is interpreted as part of a greenstone belt within the large Meso- to Neoproterozoic Pampean Terrane of the Eastern Sierras Pampeanas of Argentina.
Fil: Gonzalez, Pablo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Sato, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Llambias, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Petronilho, Liliana. Universidade de Sao Paulo; Brasil
Materia
ALGOMA TYPE
BANDED IRON FORMATION
EASTERN SIERRAS PAMPEANAS OF ARGENTINA
FACIES DE ÓXIDOS
FORMACIÓN FERRÍFERA BANDEADA
OXIDE FACIES
SIERRA DE SAN LUIS
SIERRAS PAMPEANAS ORIENTALES DE ARGENTINA
TIPO ALGOMA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/55599
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/55599
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic ComplexGonzalez, Pablo DiegoSato, Ana MariaLlambias, EduardoPetronilho, LilianaALGOMA TYPEBANDED IRON FORMATIONEASTERN SIERRAS PAMPEANAS OF ARGENTINAFACIES DE ÓXIDOSFORMACIÓN FERRÍFERA BANDEADAOXIDE FACIESSIERRA DE SAN LUISSIERRAS PAMPEANAS ORIENTALES DE ARGENTINATIPO ALGOMAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The metamorphosed banded iron formation from the Nogolí Metamorphic Complex of western Sierra de San Luis, Eastern Sierras Pampeanas of Argentina (Nogolí area, 32°55'S-66°15'W) is classified as an oxide facies iron formation of Algoma Type, with a tectonic setting possibly associated with an island arc or back arc, on the basis of field mapping, mineral and textural arrangements and whole rock geochemical features. The origin of banded iron formation is mainly related to chemical precipitation of hydrogenous sediments from seawater in oceanic environments. The primary chemical precipitate is a result of solutions that represent mixtures of seawater and hydrothermal fluids, with significant dilution by mafic-ultramafic volcanic and siliciclastic materials. Multi-stage TDM model ages of 1670, 1854 and 1939 Ma and positive, mantle-like ξ Nd(1502) values of +3.8, +1.5 and +0.5 from the banded iron formation are around the range of those mafic to ultramafic meta-volcanic rocks of Nogolí Metamorphic Complex, which are between 1679 and 1765 Ma and +2.64 and +3.68, respectively. This Sm and Nd isotopic connection suggests a close genetic relationship between ferruginous and mafic-ultramafic meta-volcanic rocks, as part of the same island arc or back arc setting. A previous Sm-Nd whole rock isochron of ∼1.5 Ga performed on mafic-ultramafic meta-volcanic rocks led to the interpretation that chemical sedimentation as old as Mesoproterozoic is possible for the banded iron formation. A clockwise P-T path can be inferred for the regional metamorphic evolution of the banded iron formation, with three distinctive trajectories: (1) Relict prograde M1-M3 segment with gradual P and T increase from greenschist facies at M1 to amphibolite facies at M3. (2) Peak P-T conditions at high amphibolite-low granulite facies during M4. (3) Retrograde counterpart of M4, that returns from amphibolite facies and stabilizes at greenschist facies during M5. Each trajectory may be regarded as produced by different tectonic events related to the Pampean? (1) and the Famatinian (2 and 3) orogenies, during the Early to Middle Paleozoic. The Nogolí Metamorphic Complex is interpreted as part of a greenstone belt within the large Meso- to Neoproterozoic Pampean Terrane of the Eastern Sierras Pampeanas of Argentina.Fil: Gonzalez, Pablo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Sato, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Llambias, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; ArgentinaFil: Petronilho, Liliana. Universidade de Sao Paulo; BrasilPergamon-Elsevier Science Ltd2009-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/55599Gonzalez, Pablo Diego; Sato, Ana Maria; Llambias, Eduardo; Petronilho, Liliana; Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic Complex; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 28; 2; 8-2009; 89-1120895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S089598110900039Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2009.03.005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T15:52:44Zoai:ri.conicet.gov.ar:11336/55599instacron: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 15:52:44.515CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic Complex
title Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic Complex
spellingShingle Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic Complex
Gonzalez, Pablo Diego
ALGOMA TYPE
BANDED IRON FORMATION
EASTERN SIERRAS PAMPEANAS OF ARGENTINA
FACIES DE ÓXIDOS
FORMACIÓN FERRÍFERA BANDEADA
OXIDE FACIES
SIERRA DE SAN LUIS
SIERRAS PAMPEANAS ORIENTALES DE ARGENTINA
TIPO ALGOMA
title_short Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic Complex
title_full Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic Complex
title_fullStr Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic Complex
title_full_unstemmed Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic Complex
title_sort Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic Complex
dc.creator.none.fl_str_mv Gonzalez, Pablo Diego
Sato, Ana Maria
Llambias, Eduardo
Petronilho, Liliana
author Gonzalez, Pablo Diego
author_facet Gonzalez, Pablo Diego
Sato, Ana Maria
Llambias, Eduardo
Petronilho, Liliana
author_role author
author2 Sato, Ana Maria
Llambias, Eduardo
Petronilho, Liliana
author2_role author
author
author
dc.subject.none.fl_str_mv ALGOMA TYPE
BANDED IRON FORMATION
EASTERN SIERRAS PAMPEANAS OF ARGENTINA
FACIES DE ÓXIDOS
FORMACIÓN FERRÍFERA BANDEADA
OXIDE FACIES
SIERRA DE SAN LUIS
SIERRAS PAMPEANAS ORIENTALES DE ARGENTINA
TIPO ALGOMA
topic ALGOMA TYPE
BANDED IRON FORMATION
EASTERN SIERRAS PAMPEANAS OF ARGENTINA
FACIES DE ÓXIDOS
FORMACIÓN FERRÍFERA BANDEADA
OXIDE FACIES
SIERRA DE SAN LUIS
SIERRAS PAMPEANAS ORIENTALES DE ARGENTINA
TIPO ALGOMA
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 metamorphosed banded iron formation from the Nogolí Metamorphic Complex of western Sierra de San Luis, Eastern Sierras Pampeanas of Argentina (Nogolí area, 32°55'S-66°15'W) is classified as an oxide facies iron formation of Algoma Type, with a tectonic setting possibly associated with an island arc or back arc, on the basis of field mapping, mineral and textural arrangements and whole rock geochemical features. The origin of banded iron formation is mainly related to chemical precipitation of hydrogenous sediments from seawater in oceanic environments. The primary chemical precipitate is a result of solutions that represent mixtures of seawater and hydrothermal fluids, with significant dilution by mafic-ultramafic volcanic and siliciclastic materials. Multi-stage TDM model ages of 1670, 1854 and 1939 Ma and positive, mantle-like ξ Nd(1502) values of +3.8, +1.5 and +0.5 from the banded iron formation are around the range of those mafic to ultramafic meta-volcanic rocks of Nogolí Metamorphic Complex, which are between 1679 and 1765 Ma and +2.64 and +3.68, respectively. This Sm and Nd isotopic connection suggests a close genetic relationship between ferruginous and mafic-ultramafic meta-volcanic rocks, as part of the same island arc or back arc setting. A previous Sm-Nd whole rock isochron of ∼1.5 Ga performed on mafic-ultramafic meta-volcanic rocks led to the interpretation that chemical sedimentation as old as Mesoproterozoic is possible for the banded iron formation. A clockwise P-T path can be inferred for the regional metamorphic evolution of the banded iron formation, with three distinctive trajectories: (1) Relict prograde M1-M3 segment with gradual P and T increase from greenschist facies at M1 to amphibolite facies at M3. (2) Peak P-T conditions at high amphibolite-low granulite facies during M4. (3) Retrograde counterpart of M4, that returns from amphibolite facies and stabilizes at greenschist facies during M5. Each trajectory may be regarded as produced by different tectonic events related to the Pampean? (1) and the Famatinian (2 and 3) orogenies, during the Early to Middle Paleozoic. The Nogolí Metamorphic Complex is interpreted as part of a greenstone belt within the large Meso- to Neoproterozoic Pampean Terrane of the Eastern Sierras Pampeanas of Argentina.
Fil: Gonzalez, Pablo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Sato, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Llambias, Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
Fil: Petronilho, Liliana. Universidade de Sao Paulo; Brasil
description The metamorphosed banded iron formation from the Nogolí Metamorphic Complex of western Sierra de San Luis, Eastern Sierras Pampeanas of Argentina (Nogolí area, 32°55'S-66°15'W) is classified as an oxide facies iron formation of Algoma Type, with a tectonic setting possibly associated with an island arc or back arc, on the basis of field mapping, mineral and textural arrangements and whole rock geochemical features. The origin of banded iron formation is mainly related to chemical precipitation of hydrogenous sediments from seawater in oceanic environments. The primary chemical precipitate is a result of solutions that represent mixtures of seawater and hydrothermal fluids, with significant dilution by mafic-ultramafic volcanic and siliciclastic materials. Multi-stage TDM model ages of 1670, 1854 and 1939 Ma and positive, mantle-like ξ Nd(1502) values of +3.8, +1.5 and +0.5 from the banded iron formation are around the range of those mafic to ultramafic meta-volcanic rocks of Nogolí Metamorphic Complex, which are between 1679 and 1765 Ma and +2.64 and +3.68, respectively. This Sm and Nd isotopic connection suggests a close genetic relationship between ferruginous and mafic-ultramafic meta-volcanic rocks, as part of the same island arc or back arc setting. A previous Sm-Nd whole rock isochron of ∼1.5 Ga performed on mafic-ultramafic meta-volcanic rocks led to the interpretation that chemical sedimentation as old as Mesoproterozoic is possible for the banded iron formation. A clockwise P-T path can be inferred for the regional metamorphic evolution of the banded iron formation, with three distinctive trajectories: (1) Relict prograde M1-M3 segment with gradual P and T increase from greenschist facies at M1 to amphibolite facies at M3. (2) Peak P-T conditions at high amphibolite-low granulite facies during M4. (3) Retrograde counterpart of M4, that returns from amphibolite facies and stabilizes at greenschist facies during M5. Each trajectory may be regarded as produced by different tectonic events related to the Pampean? (1) and the Famatinian (2 and 3) orogenies, during the Early to Middle Paleozoic. The Nogolí Metamorphic Complex is interpreted as part of a greenstone belt within the large Meso- to Neoproterozoic Pampean Terrane of the Eastern Sierras Pampeanas of Argentina.
publishDate 2009
dc.date.none.fl_str_mv 2009-08
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/11336/55599
Gonzalez, Pablo Diego; Sato, Ana Maria; Llambias, Eduardo; Petronilho, Liliana; Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic Complex; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 28; 2; 8-2009; 89-112
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/55599
identifier_str_mv Gonzalez, Pablo Diego; Sato, Ana Maria; Llambias, Eduardo; Petronilho, Liliana; Petrology and geochemistry of the banded iron formation in the Eastern Sierras Pampeanas of San Luis (Argentina): Implications for the evolution of the Nogolí Metamorphic Complex; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 28; 2; 8-2009; 89-112
0895-9811
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2009.03.005
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https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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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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score 13.265058

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