The Nahuel Niyeu basin: A Cambrian forearc basin in the Eastern North Patagonian Massif
- Autores
- Greco, Gerson A.; González, Santiago N.; Sato, Ana M.; González, Pablo D.; Basei, Miguel A.; Llambías, Eduardo J.; Varela, Ricardo
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión aceptada
- Descripción
- Fil: Greco, Gerson A. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
Fil: González, Santiago N. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
Fil: Greco, Gerson A. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
Fil: González, Santiago N. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
Fil: González, Pablo D. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
Fil: González, Pablo D. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.
Fil: Sato, Ana M. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.
Fil: Sato, Ana M. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.
Fil: Basei, Miguel A. Universidad de São Paulo. Instituto de Geociéncias. Centro de Pesquisas Geocronológicas. São Paulo; Brasil.
Fil: Llambías, Eduardo J. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.
Fil: Llambías, Eduardo J. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.
Fil: Varela, Ricardo. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.
Fil: Varela, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.
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 ~520e510 Ma (Nahuel Niyeu basin). It probably was elongated in the ~NWeSE 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) 520e510 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.
No corresponde, la publicación es en idioma ingles - Materia
-
Geociencias (Multidisciplinar)
Southwestern Gondwana margin
U-Pb geochronology
Pampean orogen
El Jagüelito Formation
Mina Gonzalito Complex
Nahuel Niyeu Formation
Geociencias (Multidisciplinar) - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de Río Negro
- OAI Identificador
- oai:rid.unrn.edu.ar:20.500.12049/4067
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The Nahuel Niyeu basin: A Cambrian forearc basin in the Eastern North Patagonian MassifGreco, Gerson A.González, Santiago N.Sato, Ana M.González, Pablo D.Basei, Miguel A.Llambías, Eduardo J.Varela, RicardoGeociencias (Multidisciplinar)Southwestern Gondwana marginU-Pb geochronologyPampean orogenEl Jagüelito FormationMina Gonzalito ComplexNahuel Niyeu FormationGeociencias (Multidisciplinar)Fil: Greco, Gerson A. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.Fil: González, Santiago N. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.Fil: Greco, Gerson A. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.Fil: González, Santiago N. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.Fil: González, Pablo D. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.Fil: González, Pablo D. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina.Fil: Sato, Ana M. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.Fil: Sato, Ana M. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.Fil: Basei, Miguel A. Universidad de São Paulo. Instituto de Geociéncias. Centro de Pesquisas Geocronológicas. São Paulo; Brasil.Fil: Llambías, Eduardo J. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.Fil: Llambías, Eduardo J. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.Fil: Varela, Ricardo. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.Fil: Varela, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geologicas. Buenos Aires; Argentina.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 ~520e510 Ma (Nahuel Niyeu basin). It probably was elongated in the ~NWeSE 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) 520e510 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.No corresponde, la publicación es en idioma inglesElsevier2017-07-25info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfGreco, Gerson A., González, Santiago N., Sato, Ana M., González, Pablo D., Basei, Miguel A., Llambías, Eduardo J. y Varela, Ricardo. (2017). The Nahuel Niyeu basin: A Cambrian forearc basin in the Eastern North Patagonian Massif. Elsevier; Journal of South American Earth Sciences; 79; 111-136. http://dx.doi.org/10.1016/j.jsames.2017.07.0090895-98111873-0647https://www.sciencedirect.com/science/article/pii/S0895981117300548https://rid.unrn.edu.ar/jspui/handle/20.500.12049/4067http://dx.doi.org/10.1016/j.jsames.2017.07.009eng79Journal of South American Earth Sciencesinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-09-04T11:13:17Zoai:rid.unrn.edu.ar:20.500.12049/4067instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-09-04 11:13:17.713RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse |
| 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 A. Geociencias (Multidisciplinar) Southwestern Gondwana margin U-Pb geochronology Pampean orogen El Jagüelito Formation Mina Gonzalito Complex Nahuel Niyeu Formation Geociencias (Multidisciplinar) |
| 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 A. González, Santiago N. Sato, Ana M. González, Pablo D. Basei, Miguel A. Llambías, Eduardo J. Varela, Ricardo |
| author |
Greco, Gerson A. |
| author_facet |
Greco, Gerson A. González, Santiago N. Sato, Ana M. González, Pablo D. Basei, Miguel A. Llambías, Eduardo J. Varela, Ricardo |
| author_role |
author |
| author2 |
González, Santiago N. Sato, Ana M. González, Pablo D. Basei, Miguel A. Llambías, Eduardo J. Varela, Ricardo |
| author2_role |
author author author author author author |
| dc.subject.none.fl_str_mv |
Geociencias (Multidisciplinar) Southwestern Gondwana margin U-Pb geochronology Pampean orogen El Jagüelito Formation Mina Gonzalito Complex Nahuel Niyeu Formation Geociencias (Multidisciplinar) |
| topic |
Geociencias (Multidisciplinar) Southwestern Gondwana margin U-Pb geochronology Pampean orogen El Jagüelito Formation Mina Gonzalito Complex Nahuel Niyeu Formation Geociencias (Multidisciplinar) |
| dc.description.none.fl_txt_mv |
Fil: Greco, Gerson A. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. Fil: González, Santiago N. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. Fil: Greco, Gerson A. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. Fil: González, Santiago N. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. Fil: González, Pablo D. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. Fil: González, Pablo D. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. Fil: Sato, Ana M. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina. Fil: Sato, Ana M. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geologicas. Buenos Aires; Argentina. Fil: Basei, Miguel A. Universidad de São Paulo. Instituto de Geociéncias. Centro de Pesquisas Geocronológicas. São Paulo; Brasil. Fil: Llambías, Eduardo J. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina. Fil: Llambías, Eduardo J. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geologicas. Buenos Aires; Argentina. Fil: Varela, Ricardo. Universidad Nacional de La Plata. Centro de Investigaciones Geologicas. Buenos Aires; Argentina. Fil: Varela, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones Geologicas. Buenos Aires; Argentina. 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 ~520e510 Ma (Nahuel Niyeu basin). It probably was elongated in the ~NWeSE 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) 520e510 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. No corresponde, la publicación es en idioma ingles |
| description |
Fil: Greco, Gerson A. Universidad Nacional de Río Negro. Instituto de Investigacion en Paleobiología y Geología. Río Negro; Argentina. |
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2017 |
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2017-07-25 |
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article |
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acceptedVersion |
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Greco, Gerson A., González, Santiago N., Sato, Ana M., González, Pablo D., Basei, Miguel A., Llambías, Eduardo J. y Varela, Ricardo. (2017). The Nahuel Niyeu basin: A Cambrian forearc basin in the Eastern North Patagonian Massif. Elsevier; Journal of South American Earth Sciences; 79; 111-136. http://dx.doi.org/10.1016/j.jsames.2017.07.009 0895-9811 1873-0647 https://www.sciencedirect.com/science/article/pii/S0895981117300548 https://rid.unrn.edu.ar/jspui/handle/20.500.12049/4067 http://dx.doi.org/10.1016/j.jsames.2017.07.009 |
| identifier_str_mv |
Greco, Gerson A., González, Santiago N., Sato, Ana M., González, Pablo D., Basei, Miguel A., Llambías, Eduardo J. y Varela, Ricardo. (2017). The Nahuel Niyeu basin: A Cambrian forearc basin in the Eastern North Patagonian Massif. Elsevier; Journal of South American Earth Sciences; 79; 111-136. http://dx.doi.org/10.1016/j.jsames.2017.07.009 0895-9811 1873-0647 |
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