Sedimentary Basins
Mostrando 13-24 de 42 artigos, teses e dissertações.
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13. Micropaleontolgy applied to the stratigraphic and paleoclimatic interpretation of the transition between the Paranoá Group and São Francisco Supergroup (Neoproterozoic, Cabeceiras, Goiás) / Micropaleontologia aplicada na interpretação estratigráfica e paleoclimática da transição entre o Grupo Paranoá e o Supergrupo São Francisco (Neoproterozóico, Cabeceiras, GO)
The Proterozoic record of the Fazenda Funil, near Cabeceiras, GO, includes three sedimentary units: carbonate at the top of Paranoá Group, diamictite of the Jequitaí Formation, and a succession of shale, marl-shale rhythmites, and carbonate of the Sete Lagoas Formation. Microfossiliferous chert occurs in these three units in the form of lenses in the Paran
Publicado em: 2010
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14. Áreas fontes dos minerais pesados e sua distribuição sobre a plataforma continental sul-brasileira, uruguaia e norte-argentina
The heavy mineral fraction of sedimentary rocks and sediments can provide important information about provenance in sedimentary basins studies because some minerals or group of minerals can be traced to a source rock or terrain of specific composition. This work is a provenance study based on heavy mineral analyses of samples collected on the Rio Grande do S
Publicado em: 2010
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15. Datação de processos diagenéticos em arenitos-reservatório de hidrocarbonetos : uma revisão conceitual
Geochronology has became a powerfull tool for diagenetic studies in siliciclastic rocks as it supply parameters for the definition of their depositional or diagenetic ages. This development occurred particularly in the last decades, with analytical techniques improvements and application of oil exploration. Sandstones are important hydrocarbon reservoir-rock
Publicado em: 2010
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16. ROTEIRO GEOLÓGICO NOS MUNICÍPIOS DE CASTRO E TIBAGI, PR BRASIL.
The Campos Gerais region, Paraná, Brazil, holds unique geological, geomorphological e paleontological sets, which are target of numerous works and scientific researcher. This research present a geological and paleontological route using the outcrops occurring along existing roads in the municipalities of Castro and Tibagi, Parana State, Brazil. This roadmap
Publicado em: 2010
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17. Análise da deformação pós-Rifte na Bacia do Araripe, Nordeste do Brasil
The Araripe Basin is located over Precambrian terrains of the Borborema Province, being part of Northeast Brazil inner basins. Its origin is related to the fragmentation of the Gondwana supercontinent and consequently opening of South Atlantic during early Cretaceous. The basin has a sedimentary infill encompassing four distinct evolution stages, comprising
Publicado em: 2010
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18. Modelo de facies de um sistema profundo de rampa submarina (Formação Punta Negra), Devoniano, Pre-Cordilheira Argentina / Facies model of a deep-water ramp system (Punta Negra Formation) Devonian, Argentine Precordillera
A Formação Punta Negra (Meso- Neodevoniano da Pré-Cordilheira Argentina) consiste em uma espessa sucessão de depósitos siliciclásticos de água profunda. Esta unidade aflora por cerca de 300 km em direção N-S nas províncias de San Juan, Mendoza e La Rioja. Uma detalhada análise sedimentológica permitiu identificar seis litofácies depositadas pela
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2009
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19. Molecular Systematics and Biogeography of Monogenoidea (Platyhelminthes: Cercomeromorpha), Gill Parasites of Potamotrygonidae (Chondrichthyes: Rajiformes: Myliobatoidei) / Sistemática molecular e biogeografia dos Monogenoidea (Platyhelminthes: Cercomeromorpha), parasitas das brânquias de Potamotrygonidae (Condrichthyes: Rajiformes: Myliobatoidei)
South America is the only biogeographical region in the world where is possible to find an exclusive stenohalin group of elasmobranchs: the Potamotrygonidae stingrays. Between 19 and 21 species of potamotrygonid stingrays are taxonomically organized in three genera, distributed in the Atrato, Magdalena, Maracaibo, Orinoco, Essequibo, Amazonas e la Plata rive
Publicado em: 2009
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20. Estratigrafia de sequências do intervalo aptiano ao albino na Bacia do Araripe, NE do Brasil / Estratigrafia de sequências do intervalo aptiano ao albino na Bacia do Araripe, NE do Brasil
This study has as a main objective to make a detailed stratigraphic analysis of the Aptian-Albian interval in the east part of Araripe Basin, NE of Brazil which correspond, litostratigraphically, to Rio Da Batateira, Crato, Ipubi and Romualdo formations. The stratigraphic analysis was based on three different stages, the 1D, 2D and 3D analysis; these ones we
Publicado em: 2009
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21. Mamíferos marinhos, a atividade de prospecção sísmica e o uso do Sistema de Monitoramento de Mamíferos Marinhos - SIMMAM
Since 1999, a large amount of data on marine mammals sightings has been collected by observers on board during the conduct of seismic surveys in the Brazilian coast. This is one of the mitigating measures adopted to minimize the potential impact that the activity carries on marine species. The information gathered up the necessary documents for the process o
Publicado em: 2009
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22. Radioatividade de rochas provenientes das formações geológicas pertencentes à bacia hidrográfica do Rio Tibagi
This work is a study of the 40K and the 238U and 232Th series radioactivity in rocks measured with high resolution gamma ray spectrometry. The rocks were taken from the geologic formations in the region of the Tibagi river hydrographic basin. The course of this river cuts through the Paleozoic and Mesozoic stratigraphic sequences of the Paraná sedimentary b
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/08/2008
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23. Analise morfodinamica do Rio Mogi Guaçu / Morphodynamics analysis of the Mogi Guaçu River
This study shows that fluvial dynamics of the Mogi Guaçu River (NE State of São Paulo, SE Brazilian) is influenced by hydrographic basin geological structures and lithologies that sustain the river bed. These structures and lithologies affect the shape of the longitudinal profile, changing the relationships between the stream flow dynamics and sedimentary
Publicado em: 2008
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24. Estimativa de espessura crustal na Província Borborema (NE/Brasil) através de função do recpetor
Crustal thickness and VP/VS estimates are essential to the studies of subsurface geological structures and also to the understanding of the regional tectonic evolution of a given area. In this dissertation, we use the Langstons (1979) Receiver Function Method using teleseismic events reaching the seismographic station with angles close to the vertical. In th
Publicado em: 2008