Evolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMP
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional de Geociências - RIGEO |
Texto Completo: | https://rigeo.cprm.gov.br/handle/doc/544 |
Resumo: | Paleoproterozoic basement of the Arac¸ua´ı Orogen is composed of amphibolite and granulite facies orthogneiss units known as Mantiqueira and Juiz de Fora complexes. Six U–Pb SHRIMP crystallization ages for the Mantiqueira Complex range from 2137±19 to 2041±7 Ma. Studied samples are characterized by the abundance of inherited Archean zircon grains, TDM model ages ranging from 2.9 to 3.2 Ga, and strongly negative εNd(t) (−9 to −13). Gneiss protholits were mainly generated by partial melting of older continental material, and the Mantiqueira Complex is related to active margin and syn-collisional magmatism. High-grade gneiss samples of the Juiz de Fora Complex yields crystallization ages of 2119±16 and 2084±13, and inherited zircon grains are absent. This plutonic unit much probably evolved within an oceanic magmatic arc setting, or on a very stretched continental crust. The Mantiqueira and Juiz de Fora complexes, together with the Kimezian basement of the West Congo Belt, were parts of a Paleoproterozoic orogenic system disrupted and deeply reworked during the evolution of the Arac¸ua´ı–West Congo Orogen. Neoproterozoic metamorphic overprint is dated at ca. 590–574 Ma. |
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NOCE, Carlos MPEDROSA-SOARES, Antônio CarlosSILVA, Luiz Carlos daARMSTRONG, RichardPIUZANA, Danielle2013-12-19T16:32:38Z2013-12-19T16:32:38Z2007NOCE, Carlos M; PEDROSA-SOARES, Antônio Carlos; SILVA, Luiz Carlos da; ARMSTRONG, Richard; PIUZANA, Danielle. Evolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMP. Precambrian Research, v.159, p.60-78.https://rigeo.cprm.gov.br/handle/doc/544Paleoproterozoic basement of the Arac¸ua´ı Orogen is composed of amphibolite and granulite facies orthogneiss units known as Mantiqueira and Juiz de Fora complexes. Six U–Pb SHRIMP crystallization ages for the Mantiqueira Complex range from 2137±19 to 2041±7 Ma. Studied samples are characterized by the abundance of inherited Archean zircon grains, TDM model ages ranging from 2.9 to 3.2 Ga, and strongly negative εNd(t) (−9 to −13). Gneiss protholits were mainly generated by partial melting of older continental material, and the Mantiqueira Complex is related to active margin and syn-collisional magmatism. High-grade gneiss samples of the Juiz de Fora Complex yields crystallization ages of 2119±16 and 2084±13, and inherited zircon grains are absent. This plutonic unit much probably evolved within an oceanic magmatic arc setting, or on a very stretched continental crust. The Mantiqueira and Juiz de Fora complexes, together with the Kimezian basement of the West Congo Belt, were parts of a Paleoproterozoic orogenic system disrupted and deeply reworked during the evolution of the Arac¸ua´ı–West Congo Orogen. Neoproterozoic metamorphic overprint is dated at ca. 590–574 Ma.PALEOPROTEROZOICOEvolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMPinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article[S.l.]engreponame:Repositório Institucional de Geociências - RIGEOinstname:Companhia de Pesquisa de Recursos Minerais (CPRM)instacron:CPRMinfo:eu-repo/semantics/openAccessTEXTpaleop_MG.pdf.txtpaleop_MG.pdf.txtExtracted texttext/plain70271http://rigeo.cprm.gov.br/jspui/bitstream/doc/544/2/paleop_MG.pdf.txtd8fce1735e1bf4a213d26069bb23686dMD52THUMBNAILpaleop_MG.pdf.jpgpaleop_MG.pdf.jpgGenerated Thumbnailimage/jpeg1797http://rigeo.cprm.gov.br/jspui/bitstream/doc/544/3/paleop_MG.pdf.jpg5748ca49948b9177adf6a609757edf00MD53ORIGINALpaleop_MG.pdfpaleop_MG.pdfproducao cientificaapplication/pdf2704740http://rigeo.cprm.gov.br/jspui/bitstream/doc/544/1/paleop_MG.pdfc3536f69d32373df23c33d03314f7addMD51doc/5442023-02-13 11:10:41.696oai:rigeo.sgb.gov.br:doc/544Repositório InstitucionalONGhttp://rigeo.cprm.gov.br/oai/requestrigeo@sgb.gov.bropendoar:2023-02-13T14:10:41Repositório Institucional de Geociências - RIGEO - Companhia de Pesquisa de Recursos Minerais (CPRM)false |
dc.title.none.fl_str_mv |
Evolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMP |
title |
Evolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMP |
spellingShingle |
Evolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMP NOCE, Carlos M PALEOPROTEROZOICO |
title_short |
Evolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMP |
title_full |
Evolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMP |
title_fullStr |
Evolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMP |
title_full_unstemmed |
Evolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMP |
title_sort |
Evolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMP |
author |
NOCE, Carlos M |
author_facet |
NOCE, Carlos M PEDROSA-SOARES, Antônio Carlos SILVA, Luiz Carlos da ARMSTRONG, Richard PIUZANA, Danielle |
author_role |
author |
author2 |
PEDROSA-SOARES, Antônio Carlos SILVA, Luiz Carlos da ARMSTRONG, Richard PIUZANA, Danielle |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
NOCE, Carlos M PEDROSA-SOARES, Antônio Carlos SILVA, Luiz Carlos da ARMSTRONG, Richard PIUZANA, Danielle |
dc.subject.por.fl_str_mv |
PALEOPROTEROZOICO |
topic |
PALEOPROTEROZOICO |
description |
Paleoproterozoic basement of the Arac¸ua´ı Orogen is composed of amphibolite and granulite facies orthogneiss units known as Mantiqueira and Juiz de Fora complexes. Six U–Pb SHRIMP crystallization ages for the Mantiqueira Complex range from 2137±19 to 2041±7 Ma. Studied samples are characterized by the abundance of inherited Archean zircon grains, TDM model ages ranging from 2.9 to 3.2 Ga, and strongly negative εNd(t) (−9 to −13). Gneiss protholits were mainly generated by partial melting of older continental material, and the Mantiqueira Complex is related to active margin and syn-collisional magmatism. High-grade gneiss samples of the Juiz de Fora Complex yields crystallization ages of 2119±16 and 2084±13, and inherited zircon grains are absent. This plutonic unit much probably evolved within an oceanic magmatic arc setting, or on a very stretched continental crust. The Mantiqueira and Juiz de Fora complexes, together with the Kimezian basement of the West Congo Belt, were parts of a Paleoproterozoic orogenic system disrupted and deeply reworked during the evolution of the Arac¸ua´ı–West Congo Orogen. Neoproterozoic metamorphic overprint is dated at ca. 590–574 Ma. |
publishDate |
2007 |
dc.date.issued.fl_str_mv |
2007 |
dc.date.accessioned.fl_str_mv |
2013-12-19T16:32:38Z |
dc.date.available.fl_str_mv |
2013-12-19T16:32:38Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
NOCE, Carlos M; PEDROSA-SOARES, Antônio Carlos; SILVA, Luiz Carlos da; ARMSTRONG, Richard; PIUZANA, Danielle. Evolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMP. Precambrian Research, v.159, p.60-78. |
dc.identifier.uri.fl_str_mv |
https://rigeo.cprm.gov.br/handle/doc/544 |
identifier_str_mv |
NOCE, Carlos M; PEDROSA-SOARES, Antônio Carlos; SILVA, Luiz Carlos da; ARMSTRONG, Richard; PIUZANA, Danielle. Evolution of polycyclic basement complexes in the Aracuay Orogen, based on U–Pb SHRIMP. Precambrian Research, v.159, p.60-78. |
url |
https://rigeo.cprm.gov.br/handle/doc/544 |
dc.language.iso.fl_str_mv |
eng |
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eng |
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info:eu-repo/semantics/openAccess |
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