P. J. Selby, Rev. M. J. Berkeley, A. H. Haliday, M. Ch. Morren, Francis Walker, Hon. W. H. Harvey, George Bentham, Capt. C. Ducane, George Dickie, Thomas Rymer Jones,
... of Fossil Mammifera from the Basin of the Rio Das Velhas, with an Extract of Some of Their Distinguishing ...
1839 - Gale Group | NCCO-STM 1of2

Sanjeet K. Verma, Elson P. Oliveira, Paola de Melo-Silva, Juan A. Moreno, Wagner da Silva Amaral,
The Neoarchean Rio das Velhas and Pitangui greenstone belts are situated in the southern São Francisco Craton, Minas Gerais, Brazil. These greenstone belts ... greenschist facies. Komatiites are found only in the Rio das Velhas greenstone belt, which is composed of high-MgO ... basalts, based on their distinctive geochemical characteristics. The Rio das Velhas komatiites are composed of tremolite + actinolite + serpentine + albite with a relict spinifex-texture. The Rio das Velhas komatiites have a high magnesium content ((MgO)adj ≥ ...
Tópico(s): Clay minerals and soil interactions
2017 - Elsevier BV | Lithos

Maíse Soares de Moura, Victor Cordeiro da Silva, Fernando António Leal Pacheco, Luís Filipe Sanches Fernandes, Teresa Cristina Tarlé Pissarra, Adriana Monteiro da Costa,
... specific basin with land use conflicts (the Upper Rio das Velhas basin, located in Minas Gerais, Brazil), through the ...
Tópico(s): Conservation, Biodiversity, and Resource Management
2024 - Elsevier BV | The Science of The Total Environment
Maurício Antônio Carneiro, Wilson Teixeira, Irneu Mendes de Carvalho, Rinaldo Afrânio Fernandes,
RESUMO POSICIONAMENTO ENSIALICO DO GREENSTONE BELT RIO DAS VELHAS: EVIDENCIAS ISOTOPICAS DE Nd E Pb DO COMPLEXO METAMORFICO BONFIM, QUADRILATERO FERRIFERO, BRASIL O Complexo Metamorfico Bonfim e um dos vdrios fragmentos ... foi severamente retrabalhada no decorrer do Evento Tectonotermal Rio das Velhas (2780 - 2700 Ma). No decorrer deste evento, alem ... Setentrional, a crosta sialica e o greenstone belt Rio das Velhas, na regiao do Quadrilatero Ferrifero, foram palco de ... inversao de bacia sedimentar durante o Evento Tectonotermal Rio das Velhas.
Tópico(s): Geochemistry and Elemental Analysis
1998 - Sociedade Brasileira de Geologia | Brazilian Journal of Geology

Federico Farina, Capucine Albert, Carmen I. Martínez Dopico, Carmen Aguilar, Hugo Moreira, J Hippertt, Kathryn Cutts, Fernando F. Alkmim, Cristiano Lana,
... foliated granites, formed during three major magmatic events: Rio das Velhas I (2920–2850 Ma), Rio das Velhas II (2800–2760 Ma) and Mamona (2760–2680 Ma). The Rio das Velhas II and Mamona events represent a subduction-collision ... the Quadrilátero Ferrífero. Granitic rocks emplaced during the Rio das Velhas I and II events formed by mixing between ...
Tópico(s): earthquake and tectonic studies
2015 - Elsevier BV | Journal of South American Earth Sciences

... clarified the geodynamic process and ages of the Rio das Velhas Supergroup and Minas Supergroup, two of the main ... related to deposition, metamorphism and magmatism of the Rio das Velhas Supergroup. The magmatic event of the Rio das Velhas Supergroup occurred between 2.78 Ga and 2. ... Nova Lima Group, the basal unit of the Rio das Velhas Supergroup, have an Archaean age of ca 2. ...
Tópico(s): Geochemistry and Elemental Analysis
2002 - UNIVERSIDADE DE SÃO PAULO | Geologia USP Série Científica

Orivaldo Ferreira Baltazar, Lydia Maria Lobato,
... Archean TTG granite-gneaissic terranes; (ii) the Archean Rio das Velhas greenstone belt; (iii) the Proterozoic metasedimentary and metavolcano-sedimentary covers. The Rio das Velhas rocks were deposited in the synformal NW–SE- ... inverted flank. Archean orogenic gold mineralization within the Rio das Velhas greenstone belt rocks is controlled by NNW–SSE- ...
Tópico(s): earthquake and tectonic studies
2020 - Multidisciplinary Digital Publishing Institute | Minerals

Cecília Gontijo Leal, Nara Tadini Junqueira, Hersília de Andrade е Santos, Paulo dos Santos Pompeu,
... 1867 em quatro diferentes rios da bacia do rio das Velhas. Os habitat amostrados foram caracterizados quanto à velocidade ... diferença significativa entre elas, principalmente da população do rio das Velhas em relação às demais. A separação se deu ... corpo d'água assoreado como o trecho do rio das Velhas, tende a ter maiores velocidades da água, menores ...
Tópico(s): Fish Ecology and Management Studies
2013 - Fundación Zoobotánica de Rio Grande do Sul | Iheringia Série Zoologia

Orivaldo Ferreira Baltazar, Márcia Zucchetti,
The Rio das Velhas greenstone belt is located in the Quadrilátero Ferrífero region, in the southern extremity of the São Francisco ... SE Brazil. The metavolcano–sedimentary rocks of the Rio das Velhas Supergroup in this region are subdivided into the ... Neoproterozoic Brasiliano Orogenic Cycle. Gold deposits in the Rio das Velhas greenstone belt are structurally controlled and occur associated ...
Tópico(s): earthquake and tectonic studies
2007 - Elsevier BV | Ore Geology Reviews
Mirella B. Alonso, Débora Reis de Carvalho, Carlos Bernardo Mascarenhas Alves, Marcelo Zacharias Moreira, Paulo dos Santos Pompeu,
... Astyanaxtaeniatus (Jenyns, 1842) and Astyanaxlacustris (Lütken, 1875), in Rio das Velhas Basin, which is highly impacted by the discharge ... sites located in the middle portion of the Rio das Velhas, region with greater influence of the MRBH), and ... algae/periphyton (especially at the low course of Rio das Velhas). In contrast, stable isotope analyses indicated that algae ( ... and nitrogen in the upper course of the Rio das Velhas, probably in response to the greater diversity of ...
Tópico(s): Fish Ecology and Management Studies
2019 - Pensoft Publishers | Zoologia (Curitiba)

Carolin Kresse, Lydia Maria Lobato, Rosaline Cristina Figueiredo e Silva, Steffen Hagemann, David Banks, Andre Luiz Andrade Vitorino,
... world-class Cuiabá gold deposit of the Archaean Rio das Velhas greenstone belt in Brazil is hosted in banded ... to other orogenic gold deposits hosted in the Rio das Velhas greenstone belt. The fluid inclusion data are consistent ... of lower temperature (V4, breccia-style veins). The Rio das Velhas greenstone belt is dominated by regionally metamorphosed metasedimentary ...
Tópico(s): earthquake and tectonic studies
2020 - Springer Science+Business Media | Mineralium Deposita

Ana Laura Cerqueira Trindade, Katiane Cristina de Brito Almeida, Pedro Engler Barbosa, Sílvia Corrêa Oliveira,
... qualidade das águas superficiais da sub-bacia do Rio das Velhas, inserida na bacia do Rio São Francisco, em ... a alteração da qualidade da água no baixo Rio das Velhas, apontada pela tendência de redução do IQA em ...
Tópico(s): Groundwater and Isotope Geochemistry
2016 - Brazilian Association of Sanitary and Environmental Engineering | Engenharia Sanitaria e Ambiental

Lydia Maria Lobato, João Orestes Schneider Santos, Neal J. McNaughton, Ian R. Fletcher, Carlos Maurício Noce,
... precise age of gold mineralization associated with the Rio das Velhas greenstone belt evolution, in the Quadrilátero Ferrífero, Brazil. In the basal Nova Lima Group, of the Rio das Velhas greenstone belt, felsic volcanic and volcaniclastic rocks have ...
Tópico(s): Geochemistry and Elemental Analysis
2007 - Elsevier BV | Ore Geology Reviews

... assembleias de macroinvertebrados bentonicos na bacia hidrografica do rio das Velhas. Tanto a avaliacao de parâmetros fisico-quimicos quanto ... em proteger os trechos amostrados na bacia do rio das Velhas, devido ao controle do uso e a ocupacao do solo em suas areas de entorno. Embora as areas protegidas nao tenham como finalidade primordial a conservacao da biodiversidade de organismos aquaticos e nao tenham objetivos especificos para preservacao de ecossistemas loticos, os resultados obtidos sugerem que sua gerencia eficiente garantiu a protecao das assembleias bentonicas nesses rios.
Tópico(s): Water Quality and Pollution Assessment
2008 - Pensoft Publishers | Neotropical Biology and Conservation

D.S. Vial, Ed DeWitt, Lydia Maria Lobato, Charles H. Thorman,
... by rocks at the base of the Archean Rio das Velhas greenstone belt. The deposit occurs within a thick ... and spatial association of the deposit with the Rio das Velhas orogeny, and location in close proximity to a ...
Tópico(s): Geochemistry and Elemental Analysis
2007 - Elsevier BV | Ore Geology Reviews

Mariana Brando Soares, Atlas Vasconcelos Corrêa Neto, Luíz Carlos Bertolino, Felipe Emerson André Alves, Antônio Modesto de Almeida, Pedro Henrique Montenegro da Silva, Ricardo Oliveira de Araújo Mabub, Luedson Guimarães Manduca, Ivan Mendes Caixeta de Pamplona Araújo,
... Ga). Pitangui is correlated to the widely known Rio das Velhas greenstone belt, which hosts several orogenic gold deposits ... e.g., breccias, fold hinges) during compressional events (Rio das Velhas Orogeny at 2.8–2.75 Ga), but ... described for the mesozonal gold deposits in the Rio das Velhas greenstone belt and may depict the deeper roots ...
Tópico(s): Geochemistry and Elemental Analysis
2018 - Elsevier BV | Ore Geology Reviews

Cristiano Lana, Fernando F. Alkmim, Richard Armstrong, Ricardo Scholz, Rafael Romano, Hermínio Arias Nalini Júnior,
... periods – described here as the Santa Barbara (SB), Rio das Velhas I (RVI) and Rio das Velhas II (RVII) events – embody a significant part of ...
Tópico(s): Geochemistry and Geologic Mapping
2013 - Elsevier BV | Precambrian Research

Joanna Chaves Souto Araújo, Lydia Maria Lobato,
... and banded iron formation (BIF) from the Archean Rio das Velhas greenstone belt (RVGB), Quadrilátero Ferrífero, including seven orogenic ... depositional model for the RVGB BIF within the Rio das Velhas basin related to both proximity to the hydrothermal ...
Tópico(s): Geological and Geochemical Analysis
2019 - Elsevier BV | Journal of South American Earth Sciences

Clibson Alves dos Santos, Frederico Garcia Sobreira,
A região do Alto Rio das Velhas está inserida no contexto da província geológica do Quadrilátero Ferrífero, na região Central de Minas, sendo caracterizada pelo uso conflituoso ... Ribeirão Carioca, afluentes do rio Itabirito, tributário do rio das Velhas, visando a auxiliar na compreensão da vulnerabilidade natural ...
Tópico(s): Tailings Management and Properties
2008 - SciELO | Rem Revista Escola de Minas

D.S. Vial, G.C. Abreu, G. Schubert, Luiz Cláudio Ribeiro-Rodrigues,
... occurrences in the Archean greenstone belt comprising the Rio das Velhas Supergroup. There are numerous small gold deposits, including ... a consistent feature of the deposits. In the Rio das Velhas greenstone belt, six main styles of gold mineralization ...
Tópico(s): Geomagnetism and Paleomagnetism Studies
2007 - Elsevier BV | Ore Geology Reviews
André Augusto Rodrigues Salgado, César Augusto Chicarino Varajão, Fabrice Colin, Régis Braucher, Angélica Fortes Drummond Chicarino Varajão, Hermínio Arias Nalini Júnior, Luís Felipe Soares Cherem, Breno Ribeiro Marrent, Cristina Budei Brindusa,
... evolução das terras altas da alta Bacia do Rio das Velhas no Quadrilátero Ferrífero/MG – Bacia do São Francisco. ... terras de altitude mediana na alta Bacia do Rio das Velhas.
Tópico(s): Soil erosion and sediment transport
2007 - União da Geomorfologia Brasileira | Revista Brasileira de Geomorfologia

Carlos Maurício Noce, M ZUCCHETI, Orivaldo Ferreira Baltazar, Richard A. Armstrong, Elton Luiz Dantas, Friedrich Ewald Renger, Lydia Maria Lobato,
A felsic eruptive event within the Rio das Velhas Greenstone belt is mainly represented by volcaniclastic and resedimented volcaniclastic rocks, besides rare lava flows of dacitic composition. The volcaniclastic rocks comprise ... suggests an authochthonous to parauthocthonous development for the Rio das Velhas Greenstone belt in a continental or near-continental ...
Tópico(s): earthquake and tectonic studies
2005 - Elsevier BV | Precambrian Research
Antônio Pereira Magalhães, Allaoua Saadi,
The study of fluvial dynamics of the Rio das Velhas in the section connecting the Quadrilátero Ferríferoand the Bambuí basin, relying on a compilation of geomorphological, sedimentological and structuraldata indicates a Cenozoic morphogenesis ... the valley formation indicate a superimposition of the Rio das Velhas onto thestructures of the Quadrilátero Ferrífero with formation ...
Tópico(s): Soil erosion and sediment transport
1994 - | Revista Geonomos

Clibson Alves dos Santos, Frederico Garcia Sobreira,
... da bacia do rio Itabirito, tributário no alto rio das Velhas, afluente do Rio São Francisco. Essa região é marcada por intensos processos erosivos, decorrentes do uso inadequado dos solos. Sendo evidenciados diversos conflitos de uso dos terrenos e recursos hídricos, devido ao desenvolvimento da atividade minerária, das atividades industriais, das práticas agropastoris, da crescente ocupação ...
Tópico(s): Groundwater and Watershed Analysis
2008 - União da Geomorfologia Brasileira | Revista Brasileira de Geomorfologia

Nara Tadini Junqueira, Cecília Gontijo Leal, Carlos Bernardo Mascarenhas Alves, Paulo dos Santos Pompeu,
The rio das Velhas, located in central Minas Gerais State (Brazil), is a major tributary of the rio São Francisco. Despite ... and lower course) along the channel of the rio das Velhas. We try to answer the following question: Is ... the density of morphological types increases along the rio das Velhas, and there is no difference between the headwaters ... measures for the conservation and revitalization of the rio das Velhas, it is necessary analyze the density of species ...
Tópico(s): Fish Biology and Ecology Studies
2012 - Sociedade Brasileira de Ictiologia | Neotropical Ichthyology

... Minas Gerais, BrazilMaria Antonieta Rios Scherrer Rua Visconde Rio das Velhas 60/101 30380–740 Belo Horizonte Brazil e- ... Minas Gerais, BrazilMaria Antonieta Rios Scherrer Rua Visconde Rio das Velhas 60/101 30380–740 Belo Horizonte Brazil e- ...
Tópico(s): Drug-Induced Adverse Reactions
2006 - Wiley | Contact Dermatitis

Ênio Leandro Machado, A. R. Schrank, Carlos Maurício Noce, Gilles Gauthier,
... with a minimum age of 2860 Ma; the Rio das Velhas greenstone belt, emplaced at 2772–2780 Ma; and ... dilution lead to the following conclusions: (1) the Rio das Velhas greenstone belt contains exclusively cratogenic sediments and developed ...
Tópico(s): earthquake and tectonic studies
1996 - Elsevier BV | Earth and Planetary Science Letters

Claudia Vilhena Schayer Sabino, Ludmila Vieira Lage, Katiane Cristina de Brito Almeida,
... presente trabalho apresenta um estudo de caso do rio das Velhas, Minas Gerais, utilizando métodos estatísticos robustos após o ... para a degradação da qualidade das águas do rio das Velhas e a visualização espacial dos escores mostrou onde ...
Tópico(s): Water Quality and Pollution Assessment
2014 - Brazilian Association of Sanitary and Environmental Engineering | Engenharia Sanitaria e Ambiental

Ênio Leandro Machado, Carlos Maurício Noce, E. A. LADEIRA, O. BELO DE OLIVEIRA,
... Archean granitoids, gneisses, and a greenstone belt sequence (Rio das Velhas Supergroup), overlain by a Proterozoic clastic-chemical sedimentary ... 3 Ma; two felsic volcanic rocks from the Rio das Velhas Supergroup yielded ages of 2776 +23/-10 Ma ...
Tópico(s): earthquake and tectonic studies
1992 - Geological Society of America | Geological Society of America Bulletin

Luiz Cláudio Ribeiro-Rodrigues, Claudinei Gouveia de Oliveira, Günther Friedrich,
... a basement complex (ca. 3.2 Ga), the Rio das Velhas Supergroup greenstone sequence, and related granitoids (3.0– ... Group, which forms the lower part of the Rio das Velhas Supergroup. The lithological succession of the mine area ...
Tópico(s): Geochemistry and Elemental Analysis
2007 - Elsevier BV | Ore Geology Reviews