Výsledky vyhledávání - "Cristiane Paula de Castro Gonçalves"

Akademický článek

First occurrence of kitagohaite, Pt7Cu. from the Quadrilátero Ferrífero, Brazil

Autor: Cristiano Sampaio, Herminio Arias Nalini Jr., Cristiane Paula de Castro Gonçalves, Geraldo Magela Santos, Ana Ramalho Alkmim

Publikováno v: REM: International Engineering Journal, Vol 77, Iss 1, Pp 83-88 (2023)

Abstract A kitagohaite grain, measuring approximately 1.0 mm, was retrieved from an alluvial gold gravity concentrate from the southeastern Quadrilátero Ferrífero (QFe), Mariana, Brazil. The grain exhibits a cubic structure, whitish-steel-gray, and

Externí odkaz: https://doaj.org/article/aab4f05524f740cb856a412702385d2c

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Evidences of Synkinematic Emplacement of Plutons Revealed by Field, Petrographic, Microstructural and Mineral Chemistry Analyses: a Case Study of the 2130 Ma Alto Maranhão Suíte, Mineiro Belt, Southeastern Brazil

Autor: Leonardo Gonçalves, Cristiane Paula de Castro Gonçalves, Reginaldo Resende Vieira

Publikováno v: Anuário do Instituto de Geociências - UFRJ. 43:376-396

Este estudo e focado nos aspectos petrograficos, microestruturais e de quimica mineral das rochas presentes na Suite Alto Maranhao (~2130 Ma), que e parte de um cinturao de granitoides Paleoproterozoicos localizados no sudeste do Brasil. Parâmetros

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aef1b3fb63d691e5d9620fe0973a9139
https://doi.org/10.11137/2020_1_376_396

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Contrasting oxygen fugacity of I- and S-type granites from the Araçuaí orogen, SE Brazil: an approach based on opaque mineral assemblages

Autor: Leonardo Gonçalves, Cristiane Paula de Castro Gonçalves, Jordania Cristina dos Santos Dias

Publikováno v: Mineralogy and Petrology. 113:667-686

This study presents mineralogical characterization of opaque assemblages from I- and S-type granites from the Aracuai orogen, southeastern Brazil that belong respectively, to the pre- and syn-collisional stages of the orogeny. Although these granites

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8d9fa2490294065c98e03b1e49c25939
https://doi.org/10.1007/s00710-019-00670-2

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Arcabouço Estrutural, Petrografia e Idades U-Pb em Zircão de Diques Intrusivos em Granitoides da Suíte Lagoa Dourada (2350 Ma) – Cinturão Mineiro, Sudeste do Brasil

Autor: Cristiane Paula de Castro Gonçalves, Stéphany Rodrigues Lopes, Leonardo Gonçalves

Publikováno v: Anuário do Instituto de Geociências; Vol 43, No 4 (2020); 66_81
Anuário do Instituto de Geociências
Universidade Federal do Rio de Janeiro (UFRJ)
instacron:UFRJ
Repositório Institucional da UFOP
Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP

A Suíte Lagoa Dourada (SLD), localizada no Cinturão Mineiro (CM), borda sul do Cráton São Francisco (CSF), datada em ca. 2,35 Ga, é composta por biotita-hornblenda tonalitos cortados por uma rede de diques classificados em 5 diferentes tipos (Ti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51bf5a398bac3b638ef13a3c302a494d
https://doi.org/10.11137/2020_4_66_81

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Microstructure Features in Paleo and Neoproterozoic Granitic Rocks, Southeastern Region of Brazil

Autor: Cristiane Paula de Castro Gonçalves, Leonardo Gonçalves

In this section we present the characteristic microstructures of granitic rocks and mylonites exposed in the southeastern region of Brazil, belonging to the geological context of the Neoproterozoic Araçuaí orogen and the Paleoproterozoic Mineiro be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::812f2319350c1d313d1bab2dd54f70a1
http://www.intechopen.com/articles/show/title/microstructure-features-in-paleo-and-neoproterozoic-granitic-rocks-southeastern-region-of-brazil

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From the plutonic root to the volcanic roof of a continental magmatic arc: a review of the Neoproterozoic Araçuaí orogen, southeastern Brazil

Autor: Leonardo Gonçalves, Cristiane Paula de Castro Gonçalves, Valter Salino Vieira, Fernando Flecha de Alkmim, Antônio Carlos Pedrosa-Soares

Publikováno v: International Journal of Earth Sciences. 107:337-358

The Aracuai-West Congo orogen (AWCO) is one of the various components of the Brasiliano/Pan-African orogenic network generated during the amalgamation of West Gondwana. In the reconstructions of Gondwana, the AWCO, encompassing the Aracuai orogen of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d0d7283e1d8e95008dd951bdb8055d46
https://doi.org/10.1007/s00531-017-1494-5

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The effects of quartz recrystallization and reaction on weak phase interconnection, strain localization and evolution of microstructure

Autor: Leonardo Gonçalves, Greg Hirth, Cristiane Paula de Castro Gonçalves

Publikováno v: Repositório Institucional da UFOP
Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP

We conducted axial compression and general shear experiments, at T = 900 °C and P = 1.5 GPa, on samples of banded iron formation (BIF) and synthetic aggregates of quartz, hematite and magnetite to investigate how dynamic recrystallization of quartz

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16cf07ab857c71b77935b3bbbfe33d59
https://doi.org/10.1016/j.jsg.2014.11.010

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The development of grain boundary orientation distribution in quartz

Autor: Leonardo Evangelista Lagoeiro, Cristiane Paula de Castro Gonçalves

Publikováno v: European Journal of Mineralogy. 25:385-404

The fabric of high-angle boundaries in recrystallized quartz aggregates deformed under distinct strain and metamorphic conditions has been investigated in samples from iron formations recrystallized under lower greenschist to lower amphibolite facies

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::39fafd0652458c36a796556d10c0e9f7
https://doi.org/10.1127/0935-1221/2013/0025-2269

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SEM observation of grain boundary structures in quartz-iron oxide rocks deformed at intermediate metamorphic conditions

Autor: Leonardo Evangelista Lagoeiro, Cristiane Paula de Castro Gonçalves

Publikováno v: Repositório Institucional da UFOP
Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP

Muitos estudos têm demonstrado o efeito de uma segunda fase sobre a distribuição de fase fluida e dissolução de grãos de quartzo. Entretanto, como a maioria das observações vêm de agregados deformados sob condições de tensão hidrostática

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fc3fc5e370abf3ea6e42bbb84865797
https://doi.org/10.1590/s0001-37652011005000015

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A reologia de formação ferrífera bandada : estudo a partir de experimentos de compressão axial

Autor: Leonardo Evangelista Lagoeiro, Cristiane Paula de Castro Gonçalves, Greg Hirth

Publikováno v: Rem: Revista Escola de Minas v.65 n.4 2012
REM. Revista Escola de Minas
Escola de Minas
instacron:ESCOLA DE MINAS
Rem: Revista Escola de Minas, Volume: 65, Issue: 4, Pages: 501-508, Published: DEC 2012
Repositório Institucional da UFOP
Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP

Amostras de formações ferríferas bandadas (BIF), compostas por diferentes proporções de quartzo e hematita foram deformadas, em experimentos de compressão axial, usando-se a prensa triaxial de Griggs, sob T = 900ºC, P =1.5 GPa e taxas de defor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::152bc3a4bffcba704e5f1e099270b7fc
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672012000400010

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