Sheared-bedding parallel quartz vein as an indicator of deformation processes.
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/4118 https://doi.org/10.1016/j.tecto.2012.04.008 |
Resumo: | Monomineralic veins are well known as good recording of filling and precipitation processes. However, they are also able to register the action of deformation in rocks. We used monomineralic, quartz veins from Quadriláterro Ferrífero, Brazil, to represent how the deformation actuated during the transformation of different structures. They were analyzed using a combination of a u-stage and EBSD. Two main types of quartz aggregates are distinguished: single crystals with subgrain development and strain-free grains of quartz. We interpret the microstructures and textures as the result of a combination of concurrent crystal plasticity, microfracturing, solution transfer and recrystallization. The single quartz grains were deformed by dislocation glide. However, as the c-axis orientation of the grain was not favorable for further glide on basal planes, the deformation was accommodated by microfracturing. New grains were formed along the deformed zones with crystallographic orientations suitable for gliding on basal planes. As the deformation proceeded, the new grains continue to develop until the vein was completely recrystallized into an aggregate of granular grains. |
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Barbosa, Paola FerreiraLagoeiro, Leonardo Evangelista2014-12-09T20:40:58Z2014-12-09T20:40:58Z2012BARBOSA, P. F.; LAGOEIRO, L. E. Sheared-bedding parallel quartz vein as an indicator of deformation processes. Tectonophysics, Amsterdam, v. 564-565, p. 101-113, 2012. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0040195112002016>. Acesso em: 30 set. 2014.0040-1951http://www.repositorio.ufop.br/handle/123456789/4118https://doi.org/10.1016/j.tecto.2012.04.008Monomineralic veins are well known as good recording of filling and precipitation processes. However, they are also able to register the action of deformation in rocks. We used monomineralic, quartz veins from Quadriláterro Ferrífero, Brazil, to represent how the deformation actuated during the transformation of different structures. They were analyzed using a combination of a u-stage and EBSD. Two main types of quartz aggregates are distinguished: single crystals with subgrain development and strain-free grains of quartz. We interpret the microstructures and textures as the result of a combination of concurrent crystal plasticity, microfracturing, solution transfer and recrystallization. The single quartz grains were deformed by dislocation glide. However, as the c-axis orientation of the grain was not favorable for further glide on basal planes, the deformation was accommodated by microfracturing. New grains were formed along the deformed zones with crystallographic orientations suitable for gliding on basal planes. As the deformation proceeded, the new grains continue to develop until the vein was completely recrystallized into an aggregate of granular grains.Quartz veinDynamic recrystallizationQuadrilátero FerríferoSheared-bedding parallel quartz vein as an indicator of deformation processes.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleO periódico Tectonophysics concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3481460269681.info:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://www.repositorio.ufop.br/bitstream/123456789/4118/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52ORIGINALARTIGO_ShearedBeddingParallel.pdfARTIGO_ShearedBeddingParallel.pdfapplication/pdf8530033http://www.repositorio.ufop.br/bitstream/123456789/4118/1/ARTIGO_ShearedBeddingParallel.pdfee32cc174c85503cc0dfe08a4a6fa68eMD51123456789/41182019-05-16 09:34:25.619oai:localhost:123456789/4118Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-05-16T13:34:25Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
Sheared-bedding parallel quartz vein as an indicator of deformation processes. |
title |
Sheared-bedding parallel quartz vein as an indicator of deformation processes. |
spellingShingle |
Sheared-bedding parallel quartz vein as an indicator of deformation processes. Barbosa, Paola Ferreira Quartz vein Dynamic recrystallization Quadrilátero Ferrífero |
title_short |
Sheared-bedding parallel quartz vein as an indicator of deformation processes. |
title_full |
Sheared-bedding parallel quartz vein as an indicator of deformation processes. |
title_fullStr |
Sheared-bedding parallel quartz vein as an indicator of deformation processes. |
title_full_unstemmed |
Sheared-bedding parallel quartz vein as an indicator of deformation processes. |
title_sort |
Sheared-bedding parallel quartz vein as an indicator of deformation processes. |
author |
Barbosa, Paola Ferreira |
author_facet |
Barbosa, Paola Ferreira Lagoeiro, Leonardo Evangelista |
author_role |
author |
author2 |
Lagoeiro, Leonardo Evangelista |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Barbosa, Paola Ferreira Lagoeiro, Leonardo Evangelista |
dc.subject.por.fl_str_mv |
Quartz vein Dynamic recrystallization Quadrilátero Ferrífero |
topic |
Quartz vein Dynamic recrystallization Quadrilátero Ferrífero |
description |
Monomineralic veins are well known as good recording of filling and precipitation processes. However, they are also able to register the action of deformation in rocks. We used monomineralic, quartz veins from Quadriláterro Ferrífero, Brazil, to represent how the deformation actuated during the transformation of different structures. They were analyzed using a combination of a u-stage and EBSD. Two main types of quartz aggregates are distinguished: single crystals with subgrain development and strain-free grains of quartz. We interpret the microstructures and textures as the result of a combination of concurrent crystal plasticity, microfracturing, solution transfer and recrystallization. The single quartz grains were deformed by dislocation glide. However, as the c-axis orientation of the grain was not favorable for further glide on basal planes, the deformation was accommodated by microfracturing. New grains were formed along the deformed zones with crystallographic orientations suitable for gliding on basal planes. As the deformation proceeded, the new grains continue to develop until the vein was completely recrystallized into an aggregate of granular grains. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012 |
dc.date.accessioned.fl_str_mv |
2014-12-09T20:40:58Z |
dc.date.available.fl_str_mv |
2014-12-09T20:40:58Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
BARBOSA, P. F.; LAGOEIRO, L. E. Sheared-bedding parallel quartz vein as an indicator of deformation processes. Tectonophysics, Amsterdam, v. 564-565, p. 101-113, 2012. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0040195112002016>. Acesso em: 30 set. 2014. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/4118 |
dc.identifier.issn.none.fl_str_mv |
0040-1951 |
dc.identifier.doi.none.fl_str_mv |
https://doi.org/10.1016/j.tecto.2012.04.008 |
identifier_str_mv |
BARBOSA, P. F.; LAGOEIRO, L. E. Sheared-bedding parallel quartz vein as an indicator of deformation processes. Tectonophysics, Amsterdam, v. 564-565, p. 101-113, 2012. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0040195112002016>. Acesso em: 30 set. 2014. 0040-1951 |
url |
http://www.repositorio.ufop.br/handle/123456789/4118 https://doi.org/10.1016/j.tecto.2012.04.008 |
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eng |
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eng |
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