The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian Massif

Autores
Greco, Gerson Alan; González, Santiago Nicolás; Sato, Ana Maria; Gonzalez, Pablo Diego; Stipp Basei, Miguel Angelo; Llambias, Eduardo Jorge; Varela, Ricardo
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Early Paleozoic basement of the eastern North Patagonian Massif includes low- and high grade metamorphic units, which consist mainly of alternating paraderived metamorphic rocks (mostly derived from siliciclastic protoliths) with minor intercalations of orthoderived metamorphic rocks. In this contribution we provide a better understanding of the tectonic setting in which the protoliths of these units were formed, which adds to an earlier suggested idea. With this purpose, we studied the metasedimentary rocks of the low-grade Nahuel Niyeu Formation from the Aguada Cecilio area combining mapping and petrographic analysis with U–Pb geochronology and characterization of detrital zircon grains. The results and interpretations of this unit, together with published geological, geochronological and geochemical information, allow us to interpret the sedimentary and igneous protoliths of all metamorphic units from the massif as formed in a forearc basin at ∼520–510 Ma (Nahuel Niyeu basin). It probably was elongated in the ∼NW–SE direction, and would have received detritus from a proximal source area situated toward its northeastern side (present coordinates). The basin might be related to an extensional tectonic regime. Most likely source rocks were: (1) 520–510 Ma, acidic volcanic rocks (an active magmatic arc), (2) ∼555–>520 Ma, acidic plutonic and volcanic rocks (earlier stages of the same arc), and (3) latest Ediacaran-Terreneuvian, paraderived metamorphic rocks (country rocks of the arc). We evaluate the Nahuel Niyeu basin considering the eastern North Patagonian Massif as an autochthonous part of South America, adding to the discussion of the origin of Patagonia.
Fil: Greco, Gerson Alan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: González, Santiago Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; 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: Gonzalez, Pablo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Stipp Basei, Miguel Angelo. Universidade de Sao Paulo; Brasil
Fil: Llambias, Eduardo Jorge. 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: Varela, Ricardo. 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
Materia
El JagÜElito Formation
Mina Gonzalito Complex
Nahuel Niyeu Formation
Pampean Orogen
Southwestern Gondwana Margin
U&Ndash;Pb Geochronology
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:11336/65443
Acceder
id CONICETDig_4d70baf270c7c65cb2cda4ffeb8e7001
oai_identifier_str oai:ri.conicet.gov.ar:11336/65443
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian MassifGreco, Gerson AlanGonzález, Santiago NicolásSato, Ana MariaGonzalez, Pablo DiegoStipp Basei, Miguel AngeloLlambias, Eduardo JorgeVarela, RicardoEl JagÜElito FormationMina Gonzalito ComplexNahuel Niyeu FormationPampean OrogenSouthwestern Gondwana MarginU&Ndash;Pb Geochronologyhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Early Paleozoic basement of the eastern North Patagonian Massif includes low- and high grade metamorphic units, which consist mainly of alternating paraderived metamorphic rocks (mostly derived from siliciclastic protoliths) with minor intercalations of orthoderived metamorphic rocks. In this contribution we provide a better understanding of the tectonic setting in which the protoliths of these units were formed, which adds to an earlier suggested idea. With this purpose, we studied the metasedimentary rocks of the low-grade Nahuel Niyeu Formation from the Aguada Cecilio area combining mapping and petrographic analysis with U–Pb geochronology and characterization of detrital zircon grains. The results and interpretations of this unit, together with published geological, geochronological and geochemical information, allow us to interpret the sedimentary and igneous protoliths of all metamorphic units from the massif as formed in a forearc basin at ∼520–510 Ma (Nahuel Niyeu basin). It probably was elongated in the ∼NW–SE direction, and would have received detritus from a proximal source area situated toward its northeastern side (present coordinates). The basin might be related to an extensional tectonic regime. Most likely source rocks were: (1) 520–510 Ma, acidic volcanic rocks (an active magmatic arc), (2) ∼555–>520 Ma, acidic plutonic and volcanic rocks (earlier stages of the same arc), and (3) latest Ediacaran-Terreneuvian, paraderived metamorphic rocks (country rocks of the arc). We evaluate the Nahuel Niyeu basin considering the eastern North Patagonian Massif as an autochthonous part of South America, adding to the discussion of the origin of Patagonia.Fil: Greco, Gerson Alan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: González, Santiago Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; 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: Gonzalez, Pablo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Stipp Basei, Miguel Angelo. Universidade de Sao Paulo; BrasilFil: Llambias, Eduardo Jorge. 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: Varela, Ricardo. 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; ArgentinaPergamon-Elsevier Science Ltd2017-11-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/65443Greco, Gerson Alan; González, Santiago Nicolás; Sato, Ana Maria; Gonzalez, Pablo Diego; Stipp Basei, Miguel Angelo; et al.; The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian Massif; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 79; 25-11-2017; 111-1360895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0895981117300548info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2017.07.009info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:38:23Zoai:ri.conicet.gov.ar:11336/65443instacron: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:34982025-09-29 09:38:23.783CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian Massif
title The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian Massif
spellingShingle The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian Massif
Greco, Gerson Alan
El JagÜElito Formation
Mina Gonzalito Complex
Nahuel Niyeu Formation
Pampean Orogen
Southwestern Gondwana Margin
U&Ndash;Pb Geochronology
title_short The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian Massif
title_full The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian Massif
title_fullStr The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian Massif
title_full_unstemmed The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian Massif
title_sort The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian Massif
dc.creator.none.fl_str_mv Greco, Gerson Alan
González, Santiago Nicolás
Sato, Ana Maria
Gonzalez, Pablo Diego
Stipp Basei, Miguel Angelo
Llambias, Eduardo Jorge
Varela, Ricardo
author Greco, Gerson Alan
author_facet Greco, Gerson Alan
González, Santiago Nicolás
Sato, Ana Maria
Gonzalez, Pablo Diego
Stipp Basei, Miguel Angelo
Llambias, Eduardo Jorge
Varela, Ricardo
author_role author
author2 González, Santiago Nicolás
Sato, Ana Maria
Gonzalez, Pablo Diego
Stipp Basei, Miguel Angelo
Llambias, Eduardo Jorge
Varela, Ricardo
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv El JagÜElito Formation
Mina Gonzalito Complex
Nahuel Niyeu Formation
Pampean Orogen
Southwestern Gondwana Margin
U&Ndash;Pb Geochronology
topic El JagÜElito Formation
Mina Gonzalito Complex
Nahuel Niyeu Formation
Pampean Orogen
Southwestern Gondwana Margin
U&Ndash;Pb Geochronology
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Early Paleozoic basement of the eastern North Patagonian Massif includes low- and high grade metamorphic units, which consist mainly of alternating paraderived metamorphic rocks (mostly derived from siliciclastic protoliths) with minor intercalations of orthoderived metamorphic rocks. In this contribution we provide a better understanding of the tectonic setting in which the protoliths of these units were formed, which adds to an earlier suggested idea. With this purpose, we studied the metasedimentary rocks of the low-grade Nahuel Niyeu Formation from the Aguada Cecilio area combining mapping and petrographic analysis with U–Pb geochronology and characterization of detrital zircon grains. The results and interpretations of this unit, together with published geological, geochronological and geochemical information, allow us to interpret the sedimentary and igneous protoliths of all metamorphic units from the massif as formed in a forearc basin at ∼520–510 Ma (Nahuel Niyeu basin). It probably was elongated in the ∼NW–SE direction, and would have received detritus from a proximal source area situated toward its northeastern side (present coordinates). The basin might be related to an extensional tectonic regime. Most likely source rocks were: (1) 520–510 Ma, acidic volcanic rocks (an active magmatic arc), (2) ∼555–>520 Ma, acidic plutonic and volcanic rocks (earlier stages of the same arc), and (3) latest Ediacaran-Terreneuvian, paraderived metamorphic rocks (country rocks of the arc). We evaluate the Nahuel Niyeu basin considering the eastern North Patagonian Massif as an autochthonous part of South America, adding to the discussion of the origin of Patagonia.
Fil: Greco, Gerson Alan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: González, Santiago Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; 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: Gonzalez, Pablo Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Stipp Basei, Miguel Angelo. Universidade de Sao Paulo; Brasil
Fil: Llambias, Eduardo Jorge. 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: Varela, Ricardo. 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
description Early Paleozoic basement of the eastern North Patagonian Massif includes low- and high grade metamorphic units, which consist mainly of alternating paraderived metamorphic rocks (mostly derived from siliciclastic protoliths) with minor intercalations of orthoderived metamorphic rocks. In this contribution we provide a better understanding of the tectonic setting in which the protoliths of these units were formed, which adds to an earlier suggested idea. With this purpose, we studied the metasedimentary rocks of the low-grade Nahuel Niyeu Formation from the Aguada Cecilio area combining mapping and petrographic analysis with U–Pb geochronology and characterization of detrital zircon grains. The results and interpretations of this unit, together with published geological, geochronological and geochemical information, allow us to interpret the sedimentary and igneous protoliths of all metamorphic units from the massif as formed in a forearc basin at ∼520–510 Ma (Nahuel Niyeu basin). It probably was elongated in the ∼NW–SE direction, and would have received detritus from a proximal source area situated toward its northeastern side (present coordinates). The basin might be related to an extensional tectonic regime. Most likely source rocks were: (1) 520–510 Ma, acidic volcanic rocks (an active magmatic arc), (2) ∼555–>520 Ma, acidic plutonic and volcanic rocks (earlier stages of the same arc), and (3) latest Ediacaran-Terreneuvian, paraderived metamorphic rocks (country rocks of the arc). We evaluate the Nahuel Niyeu basin considering the eastern North Patagonian Massif as an autochthonous part of South America, adding to the discussion of the origin of Patagonia.
publishDate 2017
dc.date.none.fl_str_mv 2017-11-25
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/11336/65443
Greco, Gerson Alan; González, Santiago Nicolás; Sato, Ana Maria; Gonzalez, Pablo Diego; Stipp Basei, Miguel Angelo; et al.; The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian Massif; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 79; 25-11-2017; 111-136
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/65443
identifier_str_mv Greco, Gerson Alan; González, Santiago Nicolás; Sato, Ana Maria; Gonzalez, Pablo Diego; Stipp Basei, Miguel Angelo; et al.; The Nahuel Niyeu basin: A Cambrian forearc basin in the eastern North Patagonian Massif; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 79; 25-11-2017; 111-136
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/http://www.sciencedirect.com/science/article/pii/S0895981117300548
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2017.07.009
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
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
_version_ 1844613213610573824
score 13.070432

Publicaciones similares