Limpar
314 resultados

Acesso aberto

Tipo do recurso

Ano de criação

Produção nacional

Revisado por pares

Áreas

Idioma

Editores

Artigo Acesso aberto Brasil Produção Nacional

Gélson Luís Fambrini, Renato Paes de Almeida, Antônio Romalino Santos Fragoso-Cesar,

... covers crop out and were related to the Camaquã Supergroup. The supergroup, with a thickness of over ... NNE-SSW oriented, named Western, Central and Eastern Camaquã respectively and separated by the Caçapava do Sul ... to play a paleogeographic evolution of the Western Camaquã Sub-Basin. The sedimentary units of the Western Camaquã Sub-Basin comprise, at the base, conglomerates and ... fans suggest that tectonic isolation of the Western Camaquã Sub-Basin occurred only at late stages of ...

Tópico(s): Geochemistry and Geologic Mapping

2006 - Sociedade Brasileira de Geologia | Revista Brasileira de Geociências

Artigo Brasil Produção Nacional

Gélson Luís Fambrini, Liliane Janikian, Renato Paes de Almeida, Antônio Romalino Santos Fragoso-Cesar,

In the Central Camaqua Sub-basin, the Santa Barbara Group (Ediacaran) is over 2,000 m thick, being well exposed in the Minas do Camaqua and Bom Jardim regions. The group is represented ... of the Santa Barbara Group, in the Central Camaqua Sub-basin, into four formations: (i) Passo da ... permitted the detailed correlation between the Minas do Camaqua and Bom Jardim regions, thus supporting the proposition ... Group, the deposits exposed in the Minas do Camaqua region, traditionally reported to the Arroio dos Nobres ...

Tópico(s): Geological and Geophysical Studies

2005 - Sociedade Brasileira de Geologia | Brazilian Journal of Geology

Artigo Acesso aberto Brasil Produção Nacional

Gélson Luís Fambrini, Liliane Janikian, Renato Paes de Almeida, Antônio Romalino Santos Fragoso-Cesar,

In the Central Camaquã Sub-basin, the Santa Bárbara Group (Ediacaran) is over 2,000 m thick, being well exposed in the Minas do Camaquã and Bom Jardim regions. The group is represented ... of the Santa Bárbara Group, in the Central Camaquã Sub-basin, into four formations: (i) Passo da ... permitted the detailed correlation between the Minas do Camaquã and Bom Jardim regions, thus supporting the proposition ... Group, the deposits exposed in the Minas do Camaquã region, traditionally reported to the Arroio dos Nobres ...

Tópico(s): Geological formations and processes

2005 - Sociedade Brasileira de Geologia | Revista Brasileira de Geociências

Artigo Brasil Produção Nacional

Liliane Janikian, Renato Paes de Almeida, Antônio Romalino Santos Fragoso-Cesar, Carolina Rodrigues de Araujo Corrêa, Ana Paula Meireles Reis Pelosi,

The Camaqua Supergroup (Neoproterozoic III-Eopaleozoic) is composed of volcanic and sedimentary rocks that crop out in the south- ... of the Rio Grande do Sul State. The Camaqua Supergroup units crop out in the Western, Central and Eastern Camaqua Sub-Basins. The segmentation in three sub-basins ... thick and crops out only in the Western Camaqua Sub-Basin, where it is composed mainly of ...

Tópico(s): Fish biology, ecology, and behavior

2005 - Sociedade Brasileira de Geologia | Brazilian Journal of Geology

Artigo Brasil Produção Nacional Revisado por pares

Jorge Henrique Laux, Zara Gerhardt Lindenmayer, João Batista Guimarães Teixeira, Artur Cezar Bastos Neto,

The Camaquã copper mine includes the Uruguai and the São Luiz orebodies, hosted by sandstone and conglomerate of the Neoproterozoic to Early Paleozoic Camaquã basin. Despite a great controversy regarding the evolution of the Camaquã basin, it is generally accepted that the basin ... isotopes in chalcopyrite, pyrite and bornite from the Camaquã deposit plot conformably with the reference isochron of ... and the sulfur isotope ratios, indicate that the Camaquã Mine may be considered as a hydrothermal type ...

Tópico(s): Geochemistry and Geologic Mapping

2005 - Elsevier BV | Ore Geology Reviews

Artigo Acesso aberto Brasil Produção Nacional

Liliane Janikian, Renato Paes de Almeida, Antônio Romalino Santos Fragoso-Cesar, Carolina Rodrigues de Araujo Corrêa, Ana Paula Meireles Reis Pelosi,

The Camaquã Supergroup (Neoproterozoic III-Eopaleozoic) is composed of volcanic and sedimentary rocks that crop out in the south- ... of the Rio Grande do Sul State. The Camaquã Supergroup units crop out in the Western, Central and Eastern Camaquã Sub-Basins. The segmentation in three sub-basins ... thick and crops out only in the Western Camaquã Sub-Basin, where it is composed mainly of ...

Tópico(s): Fish biology, ecology, and behavior

2005 - Sociedade Brasileira de Geologia | Revista Brasileira de Geociências

Artigo Acesso aberto Brasil Produção Nacional Revisado por pares

Carolina Bueno, Rubens César Lopes Figueira, Michel Doeppre Ivanoff, Elírio E. Toldo, L. Fornaro, Felipe García‐Rodríguez,

... the observed changes in the environmental trends. Near Camaquã River mouth, we inferred fairly undisturbed conditions and ... to be affected by the mining activities upstream Camaquã River. The influence of these activities was observed upstream the lagoon, between Camaquã and Guaíba rivers, probably as a consequence of ... possível inferir que próximo à foz do Rio Camaquã, o ambiente não está perturbado e parece não ... zona mais externa da lagoa, entre os rios Camaquã e Guaíba, provavelmente em consequência da hidrodinâmica da ...

Tópico(s): Heavy metals in environment

2019 - Springer Science+Business Media | Journal of Sedimentary Environments

Artigo Acesso aberto Brasil Produção Nacional Revisado por pares

Gélson Luís Fambrini, Liliane Janikian, Renato Paes de Almeida, Antônio Romalino Santos Fragoso-Cesar,

In the Central Camaquã Sub-basin, the Santa Bárbara Group (Ediacaran) is over 2,000 m thick, being well exposed in the Minas do Camaquã and Bom Jardim regions. The group is represented ... permitted the detailed correlation between the Minas do Camaquã and Bom Jardim regions, thus supporting the proposition ... here, the deposits exposed in the Minas do Camaquã region, traditionally attributed to the Arroio dos Nobres ...

Tópico(s): Geological and Geophysical Studies

2007 - UNIVERSIDADE DE SÃO PAULO | Geologia USP Série Científica

Artigo Acesso aberto Brasil Produção Nacional

André Weissheimer de Borba,

... metade sul’ gaúcha e na bacia do Alto Camaquã, extremo sul do Brasil. Possuidora de um contexto ... representado pelas unidades pós-orogênicas da Bacia do Camaquã, e de geoformas de singular importância ecológica e ... region of Caçapava do Sul, located at the Camaquã river highlands, in the ‘southern half’ of the ... by the post-orogenic stratigraphic units of the Camaquã Basin, as well as a relief of singular ...

Tópico(s): Geography and Environmental Studies

2017 - | Geographia Meridionalis

Artigo Brasil Produção Nacional Revisado por pares

Matheus Vieira Volcan, Ândrio Cardozo Gonçalves, Luis Esteban Krause Lanés,

... described from the middle course of the Rio Camaquã, Laguna dos Patos system, Rio Grande do Sul, ... group endemic of the middle course of Rio Camaquã and the recent discovery of Austrolebias bagual in ... region reinforces the claim of the middle Rio Camaquã basin as an area of endemism for annual ...

Tópico(s): Fish Ecology and Management Studies

2017 - Q15088586 | Zootaxa

Artigo Acesso aberto Brasil Produção Nacional

Paulo Sérgio Gomes Paim, Farid Chemale, Wilson Wildner,

... hypotheses previously presented about the evolution of the Camaquã Basin, central portion of the Rio Grande do ... number of radiometric, high-quality geochronological data. The Camaquã Basin is still seen as the result of ... has evolved throughout the evolution of the entire Camaquã Basin from tholeiitic and calci-alkaline, high-K ...

Tópico(s): Academic Research in Diverse Fields

2014 - UNIVERSIDADE FEDERAL DE SANTA MARIA | Ciência e Natura

Artigo Revisado por pares

Tiago Closs De Marchi, João André Jarenkow,

The riverine forests of Camaqua River are the largest remnants of this forest type in the State of Rio Grande do Sul, Brazil, and are ... of a fragment of this forest alongside the Camaqua River, Municipality of Cristal, was studied aiming to ... 1 (J’ = 0.695). The riverine forest of Camaqua river is placed into the same low richness ...

Tópico(s): Growth and nutrition in plants

2008 - Fundación Zoobotánica de Rio Grande do Sul | Iheringia Série Botânica

Artigo Brasil Produção Nacional

Rosicler Veigel, Marcel Auguste Dardenne,

The sulfide mineralization of die Camaqua Mines (Cu) and of the Santa Maria Deposit (Pb-Zn). State of Rio Grande do Sul, southern Brazil, is associated with ... I-bornite I-chalcopyrite paragenetic sucession in the Camaqua Mines; the paleo-oxidation/cementation phase took place ... and unroofing. It is well observed in the Camaqua Mines where the previous sulfide phases were altered ... hematite-bornite-chalcocite-barite-calcite veins in the Camaqua Mines, and only of veinlets with galena-sphalerite ...

Tópico(s): Mining Techniques and Economics

1990 - Sociedade Brasileira de Geologia | Brazilian Journal of Geology

Artigo Brasil Produção Nacional Revisado por pares

Marcos Müller Bicca, Farid Chemale, Andréa Ritter Jelinek, Christie Helouise Engelmann de Oliveira, Felipe Guadagnin, Richard H. Armstrong,

... sedimentary units of the upper part of the Camaquã Basin (Ediacaran-Lower Ordovician) in the Dom Feliciano ... Belt and reworking of older units of the Camaquã Basin. The D2 structures are mainly N-trending ...

Tópico(s): Geochemistry and Elemental Analysis

2013 - Elsevier BV | Journal of South American Earth Sciences

Artigo Acesso aberto Brasil Produção Nacional

César Augusto Moreira, Lenon Melo Ilha,

... de estudos está inserida na bacia sedimentar do Camaquã, formada por um conjunto de unidades estratigráficas sedimentares ... cobre estudadas, no âmbito da bacia sedimentar do Camaquã, ocorrem na área de estudos e permitem caracterização ...

Tópico(s): Geophysical Methods and Applications

2011 - SciELO | Rem Revista Escola de Minas

Artigo Acesso aberto Brasil Produção Nacional Revisado por pares

José Augusto Teston, Elio Corseuil,

Foram estudadas as faunas de Arctiinae em Camaquã, Iraí, Lagoa Vermelha, Mostardas, Piratini, e São Pedro da Serra. As mariposas foram capturadas por meio de armadilhas luminosas, uma vez por mês, ... índices de diversidade em 1998 foram encontrados em Camaquã, Iraí e São Pedro da Serra; entretanto em ... podem ser encontradas mais 34% de espécies em Camaquã, 18% em Iraí, 75% em Lagoa Vermelha, 47% ...

Tópico(s): Biological Control of Invasive Species

2004 - Entomological Society of Brazil | Revista Brasileira de Entomologia

Artigo Brasil Produção Nacional

Antônio Romalino Santos Fragoso-Cesar, Gélson Luís Fambrini, Cláudio Riccomini, Liliane Janikian, Renato Paes de Almeida, Ana Paula Meireles Reis Pelosi, Rômulo Machado,

... sandstones of the Neoproterozoic-Cambrian Santa Barbara Formation (Camaqua Group, Rio Grande do Sul, Brazil). These features ... the development of the upper formation of the Camaqua Basin, particularly at its eastern occurrences.

Tópico(s): Geological and Geophysical Studies

2001 - Sociedade Brasileira de Geologia | Brazilian Journal of Geology

Artigo Brasil Produção Nacional Revisado por pares

Maria Helena de Aguiar Pereira e Pestana, Paul J. Lechler, M. L. L. Formoso, Jerry R. Miller,

... concentrations were determined in stream sediments from the Camaquã River Basin, located in the shield region of ... em sedimentos de corrente da Bacia do Rio Camaquã, RS, situada na região do escudo do Estado ...

Tópico(s): Heavy Metal Exposure and Toxicity

2000 - Elsevier BV | Journal of South American Earth Sciences

Artigo Brasil Produção Nacional

Antônio Romalino Santos Fragoso-Cesar, Gélson Luís Fambrini, Renato Paes de Almeida, Ana Paula Meireles Reis Pelosi, Liliane Janikian, Cláudio Riccomini, Rômulo Machado, Afonso César Rodrigues Nogueira, Gerson Souza Saes,

The Camaqua Basin is an extensional post-orogenic and pre-cratonic rift system of Neoproterozoic-Early Cambrian age located ... small sub-basins which were filled with the Camaqua Group, a thick (>9,000 m) unit composed ...

Tópico(s): Geological and Geochemical Analysis

2000 - Sociedade Brasileira de Geologia | Brazilian Journal of Geology

Artigo Brasil Produção Nacional Revisado por pares

Marcus Vinícius Dorneles Remus, Léo Afrâneo Hartmann, N.J McNaughton, David I. Groves, Ian R. Fletcher,

... constrained age of 594±5 Ma for the Camaquã/Santa Maria deposits. Thus, the epigenetic sulphides in ... idade de 594±5 Ma para os depósitos Camaquã/Santa Maria. Assim, os sulfetos epigenéticos na Formação ... serem a fonte da mineralização da região do Camaquã.

Tópico(s): Geochemistry and Elemental Analysis

2000 - Elsevier BV | Journal of South American Earth Sciences

Artigo Brasil Produção Nacional Revisado por pares

Mariane Cristina Trombetta, Felipe Guadagnin, Sissa Kumaira, Felipe Caron, Ítalo Gomes Gonçalves,

... and evolution of sedimentary rocks. The Minas do Camaquã fault zone is a primary structure of the Camaquã Basin, controlling the uplift of the ore-bearing ... Santa Bárbara Group. To the south of the Camaquã River, the fault zone deforms alluvial and eolian ... separated by the fault zone. The Minas do Camaquã fault zone in the study area is an ...

Tópico(s): Geochemistry and Elemental Analysis

2018 - Elsevier BV | Journal of South American Earth Sciences

Artigo Acesso aberto Brasil Produção Nacional

ROSICLER VEIGEL, Marcel Auguste Dardenne,

THE Cu-Pb-Zn MINERALIZATION AT THE CAMAQUÃ DISTRICT, RS.The sulfide mineralization of die Camaquã Mines (Cu) and of the Santa Maria Deposit (Pb-Zn).State of Rio Grande do ... I-bornite I-chalcopyrite paragenetic sucession in the Camaquã Mines; the paleo-oxidation/cementation phase took place ... and unroofing.It is well observed in the Camaquã Mines where the previous sulfide phases were altered ... hematite-bornite-chalcocite-barite-calcite veins in the Camaquã Mines, and only of veinlets with galena-sphalerite ...

Tópico(s): Minerals Flotation and Separation Techniques

1990 - Sociedade Brasileira de Geologia | Revista Brasileira de Geociências

Artigo Brasil Produção Nacional Revisado por pares

Ilana Lehn, Paulo Sérgio Gomes Paim, Farid Chemale,

... walled microfossils (OWM) were recently reported for the Camaquã Basin. Sphaeromorphic acritarchs, such as Leiosphaeridia sp, Lophosphaeridium ... has shown similarities and differences among them. The Camaquã Basin microfossils register a more extended time interval, ... to create a new microfossil assemblage, the CAMBAP (Camaquã Basin Palynoflora) Assemblage, which represents an ecozone , with ... SW Gondwana basins indicate microfossil similarities and differences. • Camaquã Basin palynoflora assemblage were recovered from marine and ...

Tópico(s): Geological formations and processes

2022 - Elsevier BV | Journal of South American Earth Sciences

Artigo Acesso aberto Brasil Produção Nacional

ANDRÉ DE BORBA, Anderson José Maraschin, Ana Maria Pimentel Mizusaki,

... integrated analysis of the lowermost unit of the “Camaquã Basin”. Stratigraphic and paleocurrent analyses, petrography, Sr and ... 3.4 Ma, positioning the inception of the “Camaquã Basin” at the end of the Cryogenian. Thus, ... during the inception of the rift where the Camaquã Group (Santa Bárbara and Guaritas formations) accumulated.

Tópico(s): Geochemistry and Elemental Analysis

2007 - | Pesquisas em Geociências

Artigo Brasil Produção Nacional

Henrique Zerfass, Delia del Pilar Montecinos de Almeida, Cristiane Heredia Gomes,

In the Santa Barbara Sub-Basin (Camaqua Basin), Acampamento Velho Formation (Late Vendian to Early Cambrian) presents two associations of volcanic facies, one at the base and another at ...

Tópico(s): Geological formations and processes

2000 - Sociedade Brasileira de Geologia | Brazilian Journal of Geology

Artigo Acesso aberto Brasil Produção Nacional Revisado por pares

Ilana Lehn, Rodrigo Scalise Horodyski, Paulo Sérgio Gomes Paim,

... occurrence of microfossils in Ediacaran strata of the Camaquã Basin. The assemblage includes simple (Leiosphaeridia sp. predominantly) ... Therefore, this first finding of microfossils in the Camaquã Basin constitutes a new piece of the puzzle ...

Tópico(s): Astro and Planetary Science

2019 - Nature Portfolio | Scientific Reports

Artigo Acesso aberto Brasil Produção Nacional

Maurício Mendes Von Ahn, Adriano Luís Heck Simon,

... and analyzing the landforms at the Minas do Camaquã Geosite Protection Area (MCGPA) – Rio Grande do Sul ...

Tópico(s): Geography and Environmental Studies

2017 - União da Geomorfologia Brasileira | Revista Brasileira de Geomorfologia

Artigo Acesso aberto Brasil Produção Nacional

Luiz Alberto Vedana, Ruy Paulo Philipp, Carlos Augusto Sommer,

... belonging to the Acampamento Velho Formation of the Camaquã Basin, and related to the basalts of the ...

Tópico(s): Geochemistry and Elemental Analysis

2017 - Sociedade Brasileira de Geologia | Brazilian Journal of Geology

Artigo Acesso aberto Brasil Produção Nacional Revisado por pares

Christophe Renac, André Sampaio Mexias, Márcia Elisa Boscato Gomes, Luíz Henrique Ronchi, Lauro Valentim Stoll Nardi, Jorge Henrique Laux,

... longstanding research goal. In this geological context, the Camaquã and Lavras do Sul areas are reported to ... in sedimentary rocks. The results indicate that the Camaquã mine is a low-sulfidation epithermal-type deposit ...

Tópico(s): Geochemistry and Elemental Analysis

2014 - Elsevier BV | Ore Geology Reviews