Structural framework of the iron district of Itabira, Iron Quadrangle, Minas Gerais

Detalhes bibliográficos
Autor(a) principal: Rossi,Daniel Quinaud
Data de Publicação: 2019
Outros Autores: Endo,Issamu, Gabriel,Eduardo Guimarães
Tipo de documento: Artigo
Idioma: eng
Título da fonte: REM - International Engineering Journal
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2019000100039
Resumo: Abstract The Itabira Iron District, located at the northeastern end of the Iron Quadrangle, still presents some uncertainties regarding the tectonic origin of its macrostructure. The Itabira synclinorium is characterized by a large synformal structure in the NE-SW direction, with anticlines and synclines distributed "en echelon". The analysis of the relationship between the primary structures and the plane-axial schistosity, linear and planar structures, allowed the development of a three-dimensional model for the region. The increase in deformation from E to W, observed from the Cauê mine to the Conceição mine, and the rotation of the axes of the macrostructural folds, characterized by the Cauê, Dois Córregos, and Conceição synclines, are explained in this study by a model with six deformation phases. The increase in shortening from the Cauê mine towards the Conceição mine can be explained based on the flanking fold model. The application of this mechanism to explain kilometric-scale folding has been presented for the eastern flank of the Santa Rita Syncline in the Iron Quadrangle.
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spelling Structural framework of the iron district of Itabira, Iron Quadrangle, Minas GeraisStructural frameworkIron Quadrangleflanking foldsConceição mineAbstract The Itabira Iron District, located at the northeastern end of the Iron Quadrangle, still presents some uncertainties regarding the tectonic origin of its macrostructure. The Itabira synclinorium is characterized by a large synformal structure in the NE-SW direction, with anticlines and synclines distributed "en echelon". The analysis of the relationship between the primary structures and the plane-axial schistosity, linear and planar structures, allowed the development of a three-dimensional model for the region. The increase in deformation from E to W, observed from the Cauê mine to the Conceição mine, and the rotation of the axes of the macrostructural folds, characterized by the Cauê, Dois Córregos, and Conceição synclines, are explained in this study by a model with six deformation phases. The increase in shortening from the Cauê mine towards the Conceição mine can be explained based on the flanking fold model. The application of this mechanism to explain kilometric-scale folding has been presented for the eastern flank of the Santa Rita Syncline in the Iron Quadrangle.Fundação Gorceix2019-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2019000100039REM - International Engineering Journal v.72 n.1 2019reponame:REM - International Engineering Journalinstname:Fundação Gorceix (FG)instacron:FG10.1590/0370-44672017720108info:eu-repo/semantics/openAccessRossi,Daniel QuinaudEndo,IssamuGabriel,Eduardo Guimarãeseng2019-01-31T00:00:00Zoai:scielo:S2448-167X2019000100039Revistahttps://www.rem.com.br/?lang=pt-brPRIhttps://old.scielo.br/oai/scielo-oai.php||editor@rem.com.br2448-167X2448-167Xopendoar:2019-01-31T00:00REM - International Engineering Journal - Fundação Gorceix (FG)false
dc.title.none.fl_str_mv Structural framework of the iron district of Itabira, Iron Quadrangle, Minas Gerais
title Structural framework of the iron district of Itabira, Iron Quadrangle, Minas Gerais
spellingShingle Structural framework of the iron district of Itabira, Iron Quadrangle, Minas Gerais
Rossi,Daniel Quinaud
Structural framework
Iron Quadrangle
flanking folds
Conceição mine
title_short Structural framework of the iron district of Itabira, Iron Quadrangle, Minas Gerais
title_full Structural framework of the iron district of Itabira, Iron Quadrangle, Minas Gerais
title_fullStr Structural framework of the iron district of Itabira, Iron Quadrangle, Minas Gerais
title_full_unstemmed Structural framework of the iron district of Itabira, Iron Quadrangle, Minas Gerais
title_sort Structural framework of the iron district of Itabira, Iron Quadrangle, Minas Gerais
author Rossi,Daniel Quinaud
author_facet Rossi,Daniel Quinaud
Endo,Issamu
Gabriel,Eduardo Guimarães
author_role author
author2 Endo,Issamu
Gabriel,Eduardo Guimarães
author2_role author
author
dc.contributor.author.fl_str_mv Rossi,Daniel Quinaud
Endo,Issamu
Gabriel,Eduardo Guimarães
dc.subject.por.fl_str_mv Structural framework
Iron Quadrangle
flanking folds
Conceição mine
topic Structural framework
Iron Quadrangle
flanking folds
Conceição mine
description Abstract The Itabira Iron District, located at the northeastern end of the Iron Quadrangle, still presents some uncertainties regarding the tectonic origin of its macrostructure. The Itabira synclinorium is characterized by a large synformal structure in the NE-SW direction, with anticlines and synclines distributed "en echelon". The analysis of the relationship between the primary structures and the plane-axial schistosity, linear and planar structures, allowed the development of a three-dimensional model for the region. The increase in deformation from E to W, observed from the Cauê mine to the Conceição mine, and the rotation of the axes of the macrostructural folds, characterized by the Cauê, Dois Córregos, and Conceição synclines, are explained in this study by a model with six deformation phases. The increase in shortening from the Cauê mine towards the Conceição mine can be explained based on the flanking fold model. The application of this mechanism to explain kilometric-scale folding has been presented for the eastern flank of the Santa Rita Syncline in the Iron Quadrangle.
publishDate 2019
dc.date.none.fl_str_mv 2019-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2019000100039
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2019000100039
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0370-44672017720108
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Fundação Gorceix
publisher.none.fl_str_mv Fundação Gorceix
dc.source.none.fl_str_mv REM - International Engineering Journal v.72 n.1 2019
reponame:REM - International Engineering Journal
instname:Fundação Gorceix (FG)
instacron:FG
instname_str Fundação Gorceix (FG)
instacron_str FG
institution FG
reponame_str REM - International Engineering Journal
collection REM - International Engineering Journal
repository.name.fl_str_mv REM - International Engineering Journal - Fundação Gorceix (FG)
repository.mail.fl_str_mv ||editor@rem.com.br
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