Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust input

Autores
Abre, Paulina; Cingolani, Carlos Alberto; Zimmermann, Udo; Cairncross, Bruce
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The study of heavy minerals from the Caradocian Pavón Formation (central Argentina) suggests that MORB and continental intraplate flood basalts were among the source rocks for the detrital record. The Pavón Formation was deposited on the disputed exotic Precordillera terrane. Provenance studies on this formation revealed sedimentary rocks characterized by an upper continental crustal component mixed with a mafic source, where the latter could not be described. The detrital chromian spinels provide more information about this component. The detrital spinels were chemically separated into two groups. Group 1 shows characteristics typical for host rocks related to MORB (Cr# values are between 0.4 and 0.6, Fe2+# range from 0.2 to 0.4, and they have low TiO2 and low Fe3+# contents). Conversely, Group 2 has Cr# of 0.7, Fe2+# ranging from 0.5 to 0.8, higher Fe3+# and TiO2 contents up to 4.7%, and they are related to continental flood basalts. The detrital spinels are chemically and texturally compared to those hosted in probable source rocks. Although the mafic source still remains unknown, the presence of detrital chromian spinels within the Pavón Formation implies the existence of an oceanic crustal component closely related to the Precordillera terrane. © 2009 Elsevier Ltd. All rights reserved.
Fil: Abre, Paulina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of Johannesburg; Sudáfrica
Fil: Cingolani, Carlos Alberto. 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: Zimmermann, Udo. University of Johannesburg; Sudáfrica
Fil: Cairncross, Bruce. University of Johannesburg; Sudáfrica
Materia
Detrital Spinel
Gondwana Margin
Heavy Minerals
Precordillera Terrane
Provenance
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/72573
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust inputAbre, PaulinaCingolani, Carlos AlbertoZimmermann, UdoCairncross, BruceDetrital SpinelGondwana MarginHeavy MineralsPrecordillera TerraneProvenancehttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The study of heavy minerals from the Caradocian Pavón Formation (central Argentina) suggests that MORB and continental intraplate flood basalts were among the source rocks for the detrital record. The Pavón Formation was deposited on the disputed exotic Precordillera terrane. Provenance studies on this formation revealed sedimentary rocks characterized by an upper continental crustal component mixed with a mafic source, where the latter could not be described. The detrital chromian spinels provide more information about this component. The detrital spinels were chemically separated into two groups. Group 1 shows characteristics typical for host rocks related to MORB (Cr# values are between 0.4 and 0.6, Fe2+# range from 0.2 to 0.4, and they have low TiO2 and low Fe3+# contents). Conversely, Group 2 has Cr# of 0.7, Fe2+# ranging from 0.5 to 0.8, higher Fe3+# and TiO2 contents up to 4.7%, and they are related to continental flood basalts. The detrital spinels are chemically and texturally compared to those hosted in probable source rocks. Although the mafic source still remains unknown, the presence of detrital chromian spinels within the Pavón Formation implies the existence of an oceanic crustal component closely related to the Precordillera terrane. © 2009 Elsevier Ltd. All rights reserved.Fil: Abre, Paulina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of Johannesburg; SudáfricaFil: Cingolani, Carlos Alberto. 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: Zimmermann, Udo. University of Johannesburg; SudáfricaFil: Cairncross, Bruce. University of Johannesburg; SudáfricaPergamon-Elsevier Science Ltd2009-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/72573Abre, Paulina; Cingolani, Carlos Alberto; Zimmermann, Udo; Cairncross, Bruce; Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust input; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 28; 4; 12-2009; 407-4180895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981109000595info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2009.04.005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T10:46:32Zoai:ri.conicet.gov.ar:11336/72573instacron: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:34982025-09-17 10:46:32.546CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust input
title Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust input
spellingShingle Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust input
Abre, Paulina
Detrital Spinel
Gondwana Margin
Heavy Minerals
Precordillera Terrane
Provenance
title_short Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust input
title_full Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust input
title_fullStr Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust input
title_full_unstemmed Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust input
title_sort Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust input
dc.creator.none.fl_str_mv Abre, Paulina
Cingolani, Carlos Alberto
Zimmermann, Udo
Cairncross, Bruce
author Abre, Paulina
author_facet Abre, Paulina
Cingolani, Carlos Alberto
Zimmermann, Udo
Cairncross, Bruce
author_role author
author2 Cingolani, Carlos Alberto
Zimmermann, Udo
Cairncross, Bruce
author2_role author
author
author
dc.subject.none.fl_str_mv Detrital Spinel
Gondwana Margin
Heavy Minerals
Precordillera Terrane
Provenance
topic Detrital Spinel
Gondwana Margin
Heavy Minerals
Precordillera Terrane
Provenance
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 study of heavy minerals from the Caradocian Pavón Formation (central Argentina) suggests that MORB and continental intraplate flood basalts were among the source rocks for the detrital record. The Pavón Formation was deposited on the disputed exotic Precordillera terrane. Provenance studies on this formation revealed sedimentary rocks characterized by an upper continental crustal component mixed with a mafic source, where the latter could not be described. The detrital chromian spinels provide more information about this component. The detrital spinels were chemically separated into two groups. Group 1 shows characteristics typical for host rocks related to MORB (Cr# values are between 0.4 and 0.6, Fe2+# range from 0.2 to 0.4, and they have low TiO2 and low Fe3+# contents). Conversely, Group 2 has Cr# of 0.7, Fe2+# ranging from 0.5 to 0.8, higher Fe3+# and TiO2 contents up to 4.7%, and they are related to continental flood basalts. The detrital spinels are chemically and texturally compared to those hosted in probable source rocks. Although the mafic source still remains unknown, the presence of detrital chromian spinels within the Pavón Formation implies the existence of an oceanic crustal component closely related to the Precordillera terrane. © 2009 Elsevier Ltd. All rights reserved.
Fil: Abre, Paulina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of Johannesburg; Sudáfrica
Fil: Cingolani, Carlos Alberto. 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: Zimmermann, Udo. University of Johannesburg; Sudáfrica
Fil: Cairncross, Bruce. University of Johannesburg; Sudáfrica
description The study of heavy minerals from the Caradocian Pavón Formation (central Argentina) suggests that MORB and continental intraplate flood basalts were among the source rocks for the detrital record. The Pavón Formation was deposited on the disputed exotic Precordillera terrane. Provenance studies on this formation revealed sedimentary rocks characterized by an upper continental crustal component mixed with a mafic source, where the latter could not be described. The detrital chromian spinels provide more information about this component. The detrital spinels were chemically separated into two groups. Group 1 shows characteristics typical for host rocks related to MORB (Cr# values are between 0.4 and 0.6, Fe2+# range from 0.2 to 0.4, and they have low TiO2 and low Fe3+# contents). Conversely, Group 2 has Cr# of 0.7, Fe2+# ranging from 0.5 to 0.8, higher Fe3+# and TiO2 contents up to 4.7%, and they are related to continental flood basalts. The detrital spinels are chemically and texturally compared to those hosted in probable source rocks. Although the mafic source still remains unknown, the presence of detrital chromian spinels within the Pavón Formation implies the existence of an oceanic crustal component closely related to the Precordillera terrane. © 2009 Elsevier Ltd. All rights reserved.
publishDate 2009
dc.date.none.fl_str_mv 2009-12
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/11336/72573
Abre, Paulina; Cingolani, Carlos Alberto; Zimmermann, Udo; Cairncross, Bruce; Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust input; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 28; 4; 12-2009; 407-418
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/72573
identifier_str_mv Abre, Paulina; Cingolani, Carlos Alberto; Zimmermann, Udo; Cairncross, Bruce; Detrital chromian spinels from Upper Ordovician deposits in the Precordillera terrane, Argentina: A mafic crust input; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 28; 4; 12-2009; 407-418
0895-9811
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.sciencedirect.com/science/article/pii/S0895981109000595
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2009.04.005
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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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score 13.000565

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