Rhyacian-Orosirian tectonic history of the Juiz de Fora Complex: Evidence for an Archean crustal reservoir within an island-arc system
The southern São Francisco Paleocontinent (SFP) comprises Archean nuclei and Paleoproterozoic complexes encompassing magmatic arcs juxtaposed during a Rhyacian to Orosirian orogenic event. The Juiz de Fora Complex (JFC) represents an imbricated thrust system that comprises orthogranulites with a wid...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-09-01
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| Series: | Geoscience Frontiers |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674987121001560 |
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| author | Rasec Almeida Vitalino Elizeu Henrique Bruno Samuel Moreira Bersan Lucas Eduardo de Abreu Barbosa Araujo Ivo Dussin Claudio de Morisson Valeriano Carla Neto Monica Heilbron |
| author_facet | Rasec Almeida Vitalino Elizeu Henrique Bruno Samuel Moreira Bersan Lucas Eduardo de Abreu Barbosa Araujo Ivo Dussin Claudio de Morisson Valeriano Carla Neto Monica Heilbron |
| author_sort | Rasec Almeida |
| collection | DOAJ |
| description | The southern São Francisco Paleocontinent (SFP) comprises Archean nuclei and Paleoproterozoic complexes encompassing magmatic arcs juxtaposed during a Rhyacian to Orosirian orogenic event. The Juiz de Fora Complex (JFC) represents an imbricated thrust system that comprises orthogranulites with a wide compositional range formed in an intra-oceanic setting during the Siderian to the Orosirian and later accreted to the southeastern margin of the SFP. Here we report new petrological, geochemical, whole-rock Nd and Sr data, as well as zircon U–Pb ages from felsic and mafic orthogranulites from the JFC. The new data is combined with a regional compilation that enables an evaluation of the interaction between magmatism and orogenetic episodes in the context of the consolidation of São Francisco Paleocontinent during the Rhyacian–Orosirian. Pre collisional Island Arc tholeiites (IAT), Tonalites-Trondhjemites-Granodiorites (TTGs) and sanukitoid magmatism occurred from 2200 Ma to 2085 Ma. This was followed by post-collisional magmatism, which is represented by hybrid granitoids coeval with the emplacement of E-MORB basic rocks. Crustal signatures for the Rhyacian to Orosirian evolution are highlighted by the dominance of negative εNd(t) associated with Meso- to Neoarchean Nd TDM model ages as well as inherited zircon grains from the hybrid granitoids. The JFC is extensively highlighted in the literature as a primitive intra-oceanic arc, but here we propose the reworking or recycling of ancient crustal segments within the mature arc stage of the JFC, suggesting a Mesoarchean crustal source involved in the JFC evolution. |
| first_indexed | 2024-03-12T19:11:11Z |
| format | Article |
| id | doaj.art-7840a02b0bec4703bc5be12c2f5173dc |
| institution | Directory Open Access Journal |
| issn | 1674-9871 |
| language | English |
| last_indexed | 2024-03-12T19:11:11Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Geoscience Frontiers |
| spelling | doaj.art-7840a02b0bec4703bc5be12c2f5173dc2023-08-02T05:52:23ZengElsevierGeoscience Frontiers1674-98712022-09-01135101292Rhyacian-Orosirian tectonic history of the Juiz de Fora Complex: Evidence for an Archean crustal reservoir within an island-arc systemRasec Almeida0Vitalino Elizeu1Henrique Bruno2Samuel Moreira Bersan3Lucas Eduardo de Abreu Barbosa Araujo4Ivo Dussin5Claudio de Morisson Valeriano6Carla Neto7Monica Heilbron8Universidade do Estado do Rio de Janeiro, Faculdade de Geologia, Tektos – Grupo de Pesquisa em Geotectônica, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, Brazil; Corresponding author.Universidade do Estado do Rio de Janeiro, Faculdade de Geologia, Tektos – Grupo de Pesquisa em Geotectônica, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, BrazilUniversidade do Estado do Rio de Janeiro, Faculdade de Geologia, Tektos – Grupo de Pesquisa em Geotectônica, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, BrazilUniversidade do Estado do Rio de Janeiro, Faculdade de Geologia, Tektos – Grupo de Pesquisa em Geotectônica, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, BrazilUniversidade do Estado do Rio de Janeiro, Faculdade de Geologia, Tektos – Grupo de Pesquisa em Geotectônica, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, BrazilUniversidade do Estado do Rio de Janeiro, Faculdade de Geologia, Tektos – Grupo de Pesquisa em Geotectônica, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, BrazilUniversidade do Estado do Rio de Janeiro, Faculdade de Geologia, Tektos – Grupo de Pesquisa em Geotectônica, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, Brazil; Laboratório de Geocronologia e Isótopos Radiogênicos, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, BrazilUniversidade do Estado do Rio de Janeiro, Faculdade de Geologia, Tektos – Grupo de Pesquisa em Geotectônica, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, Brazil; Laboratório de Geocronologia e Isótopos Radiogênicos, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, BrazilUniversidade do Estado do Rio de Janeiro, Faculdade de Geologia, Tektos – Grupo de Pesquisa em Geotectônica, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro, BrazilThe southern São Francisco Paleocontinent (SFP) comprises Archean nuclei and Paleoproterozoic complexes encompassing magmatic arcs juxtaposed during a Rhyacian to Orosirian orogenic event. The Juiz de Fora Complex (JFC) represents an imbricated thrust system that comprises orthogranulites with a wide compositional range formed in an intra-oceanic setting during the Siderian to the Orosirian and later accreted to the southeastern margin of the SFP. Here we report new petrological, geochemical, whole-rock Nd and Sr data, as well as zircon U–Pb ages from felsic and mafic orthogranulites from the JFC. The new data is combined with a regional compilation that enables an evaluation of the interaction between magmatism and orogenetic episodes in the context of the consolidation of São Francisco Paleocontinent during the Rhyacian–Orosirian. Pre collisional Island Arc tholeiites (IAT), Tonalites-Trondhjemites-Granodiorites (TTGs) and sanukitoid magmatism occurred from 2200 Ma to 2085 Ma. This was followed by post-collisional magmatism, which is represented by hybrid granitoids coeval with the emplacement of E-MORB basic rocks. Crustal signatures for the Rhyacian to Orosirian evolution are highlighted by the dominance of negative εNd(t) associated with Meso- to Neoarchean Nd TDM model ages as well as inherited zircon grains from the hybrid granitoids. The JFC is extensively highlighted in the literature as a primitive intra-oceanic arc, but here we propose the reworking or recycling of ancient crustal segments within the mature arc stage of the JFC, suggesting a Mesoarchean crustal source involved in the JFC evolution.http://www.sciencedirect.com/science/article/pii/S1674987121001560Juiz de Fora complexPaleoproterozoic magmatic arcTTG and sanukitoidSão Francisco Paleocontinent |
| spellingShingle | Rasec Almeida Vitalino Elizeu Henrique Bruno Samuel Moreira Bersan Lucas Eduardo de Abreu Barbosa Araujo Ivo Dussin Claudio de Morisson Valeriano Carla Neto Monica Heilbron Rhyacian-Orosirian tectonic history of the Juiz de Fora Complex: Evidence for an Archean crustal reservoir within an island-arc system Geoscience Frontiers Juiz de Fora complex Paleoproterozoic magmatic arc TTG and sanukitoid São Francisco Paleocontinent |
| title | Rhyacian-Orosirian tectonic history of the Juiz de Fora Complex: Evidence for an Archean crustal reservoir within an island-arc system |
| title_full | Rhyacian-Orosirian tectonic history of the Juiz de Fora Complex: Evidence for an Archean crustal reservoir within an island-arc system |
| title_fullStr | Rhyacian-Orosirian tectonic history of the Juiz de Fora Complex: Evidence for an Archean crustal reservoir within an island-arc system |
| title_full_unstemmed | Rhyacian-Orosirian tectonic history of the Juiz de Fora Complex: Evidence for an Archean crustal reservoir within an island-arc system |
| title_short | Rhyacian-Orosirian tectonic history of the Juiz de Fora Complex: Evidence for an Archean crustal reservoir within an island-arc system |
| title_sort | rhyacian orosirian tectonic history of the juiz de fora complex evidence for an archean crustal reservoir within an island arc system |
| topic | Juiz de Fora complex Paleoproterozoic magmatic arc TTG and sanukitoid São Francisco Paleocontinent |
| url | http://www.sciencedirect.com/science/article/pii/S1674987121001560 |
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