Atenção: Todas as denúncias são sigilosas e sua identidade será preservada.
Os campos nome e e-mail são de preenchimento opcional
Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.creator | Barbosa, Paola Ferreira | - |
Autor(es): dc.creator | Lagoeiro, Leonardo Evangelista | - |
Data de aceite: dc.date.accessioned | 2019-11-06T13:31:12Z | - |
Data de disponibilização: dc.date.available | 2019-11-06T13:31:12Z | - |
Data de envio: dc.date.issued | 2014-12-09 | - |
Data de envio: dc.date.issued | 2014-12-09 | - |
Data de envio: dc.date.issued | 2012 | - |
Fonte completa do material: dc.identifier | http://www.repositorio.ufop.br/handle/123456789/4118 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/capes/557078 | - |
Descrição: dc.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. | - |
Idioma: dc.language | en | - |
Direitos: dc.rights | O Periódico Tectonophysics concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3481460269681. | - |
Palavras-chave: dc.subject | Quartz vein | - |
Palavras-chave: dc.subject | Dynamic recrystallization | - |
Palavras-chave: dc.subject | Quadrilátero ferrífero | - |
Título: dc.title | Sheared-bedding parallel quartz vein as an indicator of deformation processes. | - |
Aparece nas coleções: | Repositório Institucional - UFOP |
O Portal eduCAPES é oferecido ao usuário, condicionado à aceitação dos termos, condições e avisos contidos aqui e sem modificações. A CAPES poderá modificar o conteúdo ou formato deste site ou acabar com a sua operação ou suas ferramentas a seu critério único e sem aviso prévio. Ao acessar este portal, você, usuário pessoa física ou jurídica, se declara compreender e aceitar as condições aqui estabelecidas, da seguinte forma: