A depositional framework for the Mississippian (Chesterian) Pride Mountain Formation/Hartselle Sandstone clastic tongue and the lower Bangor Limestone carbonate ramp in the Black Warrior basin, Mississippi and Alabama, is constructed from approximately 250 geophysical well logs, 15 well cuttings descriptions, and outcrop data. The framework is based upon cross sections, isopach maps, and transgressive-regressive sequence stratigraphy. The Lowndes-Pickens synsedimentary fault block controlled sediment dispersal in during Pride Mountain/Hartselle deposition. The basin filled from the southwest, which pushed the depocenter northeastward during Hartselle deposition. The Hartselle sub-basin is composed of the Hartselle barrier-island and back-barrier deposits to the southwest, including the Pearce siltstone. The Pearce siltstone, a previously unidentified subsurface unit, was deposited in a restricted environment controlled by the Lowndes-Pickens block. The Pride Mountain, Hartselle, and lower Bangor succession contains one complete and one partial transgressive-regressive stratigraphic sequence. An exposure surface at the top of the Hartselle Sandstone and Monteagle Limestone is a maximum regressive surface. The upper part of the Bangor ramp is highly cyclic and grades from oolitic shoal deposits southwestward into a condensed section, the Neal black shale, at the toe of the ramp. The entire thickness of the lower Bangor is equivalent to the Neal shale.

A transformação do espaço geográfico ocasiona alterações no meio ambiente e contribui para a degradação de partes consideráveis dos Recursos Hídricos, tendo como resposta mudanças ambientais em cenários distintos. A gestão dos recursos hídricos contém diretrizes, objetivos e metas a serem alcançados, com base em aspectos técnicos, normas jurídicas, planos e programas que revelam um conjunto de intenções, decisões, recomendações dos atores governamentais e da sociedade. Além da importância política e social da água enquanto recurso, o gerenciamento dos recursos hídricos agrega valor e fortalece nosso país junto ao cenário internacional nas questões relacionadas ao meio ambiente. O diagnóstico sócioambiental de uma sub-bacia, por exemplo, é um relevante instrumento de gestão estratégica, uma vez que auxilia no monitoramento e demonstra um perfil do recorte espacial, consistindo no levantamento de indicadores relevantes sob o prisma sócio-econômico e ambiental, além de possibilitar um painel integral das condições sócio-ambientais de um determinado universo de trabalho. As sub-bacias Poços/ Queimados drenam uma área de 177,70 km e estão totalmente integradas à bacia hidrográfica do Guandu, pertencente à Região Hidrográfica II, contribuinte da Baía de Sepetiba. Ambas apresentam características relevantes no que se refere à gestão dos recursos hídricos, por serem consideradas poluidoras e por demandarem ações mitigadoras em toda sua extensão. A elaboração do diagnóstico sócio-ambiental das sub-bacias dos rios Poços e Queimados no município de Queimados- RJ baseia-se na utilização de indicadores sócio-ambientais a partir da análise de dados e informações do IBGE e do CIDE nas escalas de análise do município e das sub-bacias. Pesquisas bibliográficas envolvendo a revisão da literatura sobre a gestão de recursos hídricos, histórico, aspectos sócio-econômicos e principais políticas públicas do município de Queimados, foram realizadas a partir de consultas na Internet e em instituições federais, estaduais, municipais, bem como em bibliotecas universitárias. Visitas às Secretarias de Urbanismo e Meio Ambiente, de Desenvolvimento Rural e Agricultura de Queimados e Comitê Guandu, assim como acompanhamento da atuação dos atores nas atividades de gestão de recursos hídricos. Os programas ArcView 3.2 e 9.0, o arquivo digital referente à malha territorial e setores censitários do Censo 2000/IBGE, subsidiaram a modelagem e implementação da Base e do Banco de Dados Queimados. A avaliação do potencial hídrico do município junto aos atores governamentais e sociais foi realizada através da análise do Plano de Bacia do Guandu e Plano Diretor do município e interesse dos moradores nas questões no âmbito das sub-bacias. Tendo em vista as características observadas e, com base nos dados e nos documentos analisados, o município de Queimados participa das diretrizes do Plano estratégico de Recursos hídricos validadas pelo seu Plano Diretor através de políticas públicas que atendem à integração regional, proporcionando medidas geradoras de melhorias na qualidade de vida da população das sub-bacias Poços/ Queimados e, conseqüentemente, de toda a população abastecida pela água proveniente da bacia do rio Guandu, comprovando que a consolidação do processo de Gestão Integrada dos Recursos Hídricos, onde a sociedade, o governo e os usuários se integram na busca de um objetivo único é possível. / The transformation in the geographic field allows modifications in the environment, contributing to the degradation of considerable parts of the Hydro Resources, and, as a result, an environmental changing in different scenarios. The management of hydro resources has patterns, objectives and goals to be accomplished, based on technical aspects, juridical norms, plans and programs which reveal a set of intentions, decisions, and recommendations from the governmental participants and from society as well. Besides the political and social importance of the water as resource, the management of hydro resources adds values and empowers our country in the international scenario when dealing with issues related to the environment. The social-environmental diagnosis of an under-basin, for instance, is a relevant instrument of strategic management, helping the monitoring, demonstrating aspects of the field, qualifying relevant indicators below the social-economical and environmental prism, providing an entire view of the social-environmental conditions of a specific working universe. The under-basins Poços / Queimados dry an area of 177,70 km2, being totally integrated to the hydrographic basin of Guandu, which are part of the Hydrographic Region II, contributing to the Sepetiba Bay, presenting relevant characteristics about the management of hydro resources, since it deals with polluter basins, which evidences the need of actions that mitigate all over the region. The elaboration of the socio-environmental diagnosis of the under-basins of the Poços and Queimados rivers in the Queimados town in the state of Rio de Janeiro, having as fundamental data the use of social-environmental indicators, done from the analyses of data / information from IBGE and CIDE in the scales of analyses of the town and the under-basins. Bibliographic researches involving the review of the literature about the management of hydro-resources, historic, social-economical aspects and the main public politics of the Queimados town were done based on searches on the World Wide Web and in Federal, Estate and Town Institution, and in college libraries. Visits to the Urbanism and Environment Secretary, as well as to the Rural Development and Agricultural ones in Queimados and Comitê Guandu were done, as well as the monitoring of the acts of the participants in the activities of hydro resources. Based on the modeling and implementation of the Basis and the Data from Queimados the programs Arc View 3.2 and 9.0 were utilized (developed by the Environmental System Research Institute ESRI), as well as the digital file from the 2000/IBGE Census (Territorial paths county and variable sectors). The assessment of the potential of the town about the issue related to the hydro-resources made by the governmental and social participants was realized through the analyses of the Plan of the Bay of the Guandu and Plan of the Town and of the interest of the civilians about the under-basins. Regarding the observed characteristics, and based on the data and the analyzed documents, it is concluded that the Town of Queimados participates on the patters of the Strategic Plan of Hydro-Resources valid by its Directive Plan through politics that reach the regional integration, allowing measures that foster improvement in the quality of life of the population of the under-basins Poços / Queimados and, as a consequence, of the entire population fueled by the water originated from the basin of the river Guandu, proving that the consolidation of the process of Integrated Management of Hydro Resources is possible with the integration of the society, the government and the users, since these seek for a unique objective.

Made available in DSpace on 2014-06-11T19:24:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-12-04Bitstream added on 2014-06-13T20:31:55Z : No. of bitstreams: 1 castro_lis_me_botfca.pdf: 1204333 bytes, checksum: 67b8f66d8cf3eb0d853f108d5f0509ab (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A gestão ambiental de uma bacia hidrográfica visa garantir rentabilidade aos agricultores, gerar empregos e arrecadação aos municípios, barrar a exclusão social e o êxodo rural, sempre preservando o meio ambiente, promovendo a recuperação das áreas degradadas, bem como a qualidade e a quantidade das águas. Para garantir que o planejamento ambiental otimizado da gestão de conflitos de uso na área da bacia seja implementado, é necessário que novas tecnologias como, por exemplo, os Sistema de Informação Geográfica (SIG) seja utilizado como ferramenta de apoio para a tomada de decisão. Com o objetivo de elaborar um diagnóstico ambiental para o planejamento e gestão eficiente dos recursos naturais na sub-bacia do Ribeirão Pouso Alegre no município de Jaú – SP foi criado um banco de dados a partir de um estudo detalhado de suas características como: solo, dados hidrometeorológicos, declividade, uso do solo, rede de drenagem, e para tanto, foi utilizado o SIG-SPRING. Esse diagnóstico apontou diferenças nas medidas de vazão, sendo o aumento na vazão dos córregos que compõem a sub-bacia na ordem de 22% a 35% em função da ocorrência de chuvas. Também foram apurados resultados do balanço hídrico de dados acumulados em 50 anos, onde se pode avaliar o comportamento dos Índices de Aridez e de Umidade na área da bacia. Através do cruzamento dos mapas de solo e declividade, foram encontradas as classes I, II, III e IV de Capacidade de Uso e com o cruzamento desse mapa com o Mapa de Uso Atual das terras foi verificada a existência de áreas que apresentam uso inadequado, nas terras identificadas como Classe IV, com declividade >12%. 2 A rede de drenagem da bacia em estudo foi atualizada através da sua digitalização tendo como base as fotografias aéreas de 2005 e foram comparadas com a rede de drenagem digitalizada das cartas do IGC, escala 1:10000, de 1980... / Environmental management of a river basin is intended to ensure profitability for farmers, create jobs and revenue to municipalities, spreading social exclusion and rural exodus, always preserving the environment, promoting the recovery of degraded areas, as well as the quality and quantity of water. To ensure that environmental planning optimal management of conflicts of use in the basin area is implemented, it is necessary that new technologies such as the Geographic Information System (GIS) is used as a tool to support the decision-making. Aiming to establish an environmental diagnosis for planning and efficient management of natural resources in the sub-basin of Ribeirao in the city of Pouso Alegre Jaú - SP was created a database from a detailed study of their characteristics such as soil, hydrometeorological data, slope, soil use, drainage network, and to that end, we used the GIS-SPRING. The diagnosis showed differences in measures of flow, and the increase in the flow of streams that make up the sub-basin in the order of 22% to 35% depending on the rainfall. Also cleared were results of the water balance of data accumulated in 50 years, where you can evaluate the behavior of Indices of aridity and humidity in the area of the basin. Through the crossing of the maps of soil and slope, we found the classes I, II, III and IV of capacity use and the crossing of the map with the Statement of Current Use of the land was checked for areas that have misuse, the land identified as Class IV, slope with> 12%. The network of drainage basin in the study was updated through its scan based on the aerial photographs from 2005 and were compared with the network of drainage scanned the letters from the IGC, 1:10000 scale, in 1980. Through this comparison was possible to observe a decrease of 60% in the amount of tax that make up the sub-basin of Pouso Alegre Stream...(Complete abstract click electronic access below)

Resumo: A gestão ambiental de uma bacia hidrográfica visa garantir rentabilidade aos agricultores, gerar empregos e arrecadação aos municípios, barrar a exclusão social e o êxodo rural, sempre preservando o meio ambiente, promovendo a recuperação das áreas degradadas, bem como a qualidade e a quantidade das águas. Para garantir que o planejamento ambiental otimizado da gestão de conflitos de uso na área da bacia seja implementado, é necessário que novas tecnologias como, por exemplo, os Sistema de Informação Geográfica (SIG) seja utilizado como ferramenta de apoio para a tomada de decisão. Com o objetivo de elaborar um diagnóstico ambiental para o planejamento e gestão eficiente dos recursos naturais na sub-bacia do Ribeirão Pouso Alegre no município de Jaú - SP foi criado um banco de dados a partir de um estudo detalhado de suas características como: solo, dados hidrometeorológicos, declividade, uso do solo, rede de drenagem, e para tanto, foi utilizado o SIG-SPRING. Esse diagnóstico apontou diferenças nas medidas de vazão, sendo o aumento na vazão dos córregos que compõem a sub-bacia na ordem de 22% a 35% em função da ocorrência de chuvas. Também foram apurados resultados do balanço hídrico de dados acumulados em 50 anos, onde se pode avaliar o comportamento dos Índices de Aridez e de Umidade na área da bacia. Através do cruzamento dos mapas de solo e declividade, foram encontradas as classes I, II, III e IV de Capacidade de Uso e com o cruzamento desse mapa com o Mapa de Uso Atual das terras foi verificada a existência de áreas que apresentam uso inadequado, nas terras identificadas como Classe IV, com declividade >12%. 2 A rede de drenagem da bacia em estudo foi atualizada através da sua digitalização tendo como base as fotografias aéreas de 2005 e foram comparadas com a rede de drenagem digitalizada das cartas do IGC, escala 1:10000, de 1980... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Environmental management of a river basin is intended to ensure profitability for farmers, create jobs and revenue to municipalities, spreading social exclusion and rural exodus, always preserving the environment, promoting the recovery of degraded areas, as well as the quality and quantity of water. To ensure that environmental planning optimal management of conflicts of use in the basin area is implemented, it is necessary that new technologies such as the Geographic Information System (GIS) is used as a tool to support the decision-making. Aiming to establish an environmental diagnosis for planning and efficient management of natural resources in the sub-basin of Ribeirao in the city of Pouso Alegre Jaú - SP was created a database from a detailed study of their characteristics such as soil, hydrometeorological data, slope, soil use, drainage network, and to that end, we used the GIS-SPRING. The diagnosis showed differences in measures of flow, and the increase in the flow of streams that make up the sub-basin in the order of 22% to 35% depending on the rainfall. Also cleared were results of the water balance of data accumulated in 50 years, where you can evaluate the behavior of Indices of aridity and humidity in the area of the basin. Through the crossing of the maps of soil and slope, we found the classes I, II, III and IV of capacity use and the crossing of the map with the Statement of Current Use of the land was checked for areas that have misuse, the land identified as Class IV, slope with> 12%. The network of drainage basin in the study was updated through its scan based on the aerial photographs from 2005 and were compared with the network of drainage scanned the letters from the IGC, 1:10000 scale, in 1980. Through this comparison was possible to observe a decrease of 60% in the amount of tax that make up the sub-basin of Pouso Alegre Stream...(Complete abstract click electronic access below) / Orientador: Sérgio Campos / Coorientador: Célia Regina Lopes Zimback / Banca: Sérgio Lazaro de Lima / Banca: Caetano Henrique Grossi / Mestre

A transformação do espaço geográfico ocasiona alterações no meio ambiente e contribui para a degradação de partes consideráveis dos Recursos Hídricos, tendo como resposta mudanças ambientais em cenários distintos. A gestão dos recursos hídricos contém diretrizes, objetivos e metas a serem alcançados, com base em aspectos técnicos, normas jurídicas, planos e programas que revelam um conjunto de intenções, decisões, recomendações dos atores governamentais e da sociedade. Além da importância política e social da água enquanto recurso, o gerenciamento dos recursos hídricos agrega valor e fortalece nosso país junto ao cenário internacional nas questões relacionadas ao meio ambiente. O diagnóstico sócioambiental de uma sub-bacia, por exemplo, é um relevante instrumento de gestão estratégica, uma vez que auxilia no monitoramento e demonstra um perfil do recorte espacial, consistindo no levantamento de indicadores relevantes sob o prisma sócio-econômico e ambiental, além de possibilitar um painel integral das condições sócio-ambientais de um determinado universo de trabalho. As sub-bacias Poços/ Queimados drenam uma área de 177,70 km e estão totalmente integradas à bacia hidrográfica do Guandu, pertencente à Região Hidrográfica II, contribuinte da Baía de Sepetiba. Ambas apresentam características relevantes no que se refere à gestão dos recursos hídricos, por serem consideradas poluidoras e por demandarem ações mitigadoras em toda sua extensão. A elaboração do diagnóstico sócio-ambiental das sub-bacias dos rios Poços e Queimados no município de Queimados- RJ baseia-se na utilização de indicadores sócio-ambientais a partir da análise de dados e informações do IBGE e do CIDE nas escalas de análise do município e das sub-bacias. Pesquisas bibliográficas envolvendo a revisão da literatura sobre a gestão de recursos hídricos, histórico, aspectos sócio-econômicos e principais políticas públicas do município de Queimados, foram realizadas a partir de consultas na Internet e em instituições federais, estaduais, municipais, bem como em bibliotecas universitárias. Visitas às Secretarias de Urbanismo e Meio Ambiente, de Desenvolvimento Rural e Agricultura de Queimados e Comitê Guandu, assim como acompanhamento da atuação dos atores nas atividades de gestão de recursos hídricos. Os programas ArcView 3.2 e 9.0, o arquivo digital referente à malha territorial e setores censitários do Censo 2000/IBGE, subsidiaram a modelagem e implementação da Base e do Banco de Dados Queimados. A avaliação do potencial hídrico do município junto aos atores governamentais e sociais foi realizada através da análise do Plano de Bacia do Guandu e Plano Diretor do município e interesse dos moradores nas questões no âmbito das sub-bacias. Tendo em vista as características observadas e, com base nos dados e nos documentos analisados, o município de Queimados participa das diretrizes do Plano estratégico de Recursos hídricos validadas pelo seu Plano Diretor através de políticas públicas que atendem à integração regional, proporcionando medidas geradoras de melhorias na qualidade de vida da população das sub-bacias Poços/ Queimados e, conseqüentemente, de toda a população abastecida pela água proveniente da bacia do rio Guandu, comprovando que a consolidação do processo de Gestão Integrada dos Recursos Hídricos, onde a sociedade, o governo e os usuários se integram na busca de um objetivo único é possível. / The transformation in the geographic field allows modifications in the environment, contributing to the degradation of considerable parts of the Hydro Resources, and, as a result, an environmental changing in different scenarios. The management of hydro resources has patterns, objectives and goals to be accomplished, based on technical aspects, juridical norms, plans and programs which reveal a set of intentions, decisions, and recommendations from the governmental participants and from society as well. Besides the political and social importance of the water as resource, the management of hydro resources adds values and empowers our country in the international scenario when dealing with issues related to the environment. The social-environmental diagnosis of an under-basin, for instance, is a relevant instrument of strategic management, helping the monitoring, demonstrating aspects of the field, qualifying relevant indicators below the social-economical and environmental prism, providing an entire view of the social-environmental conditions of a specific working universe. The under-basins Poços / Queimados dry an area of 177,70 km2, being totally integrated to the hydrographic basin of Guandu, which are part of the Hydrographic Region II, contributing to the Sepetiba Bay, presenting relevant characteristics about the management of hydro resources, since it deals with polluter basins, which evidences the need of actions that mitigate all over the region. The elaboration of the socio-environmental diagnosis of the under-basins of the Poços and Queimados rivers in the Queimados town in the state of Rio de Janeiro, having as fundamental data the use of social-environmental indicators, done from the analyses of data / information from IBGE and CIDE in the scales of analyses of the town and the under-basins. Bibliographic researches involving the review of the literature about the management of hydro-resources, historic, social-economical aspects and the main public politics of the Queimados town were done based on searches on the World Wide Web and in Federal, Estate and Town Institution, and in college libraries. Visits to the Urbanism and Environment Secretary, as well as to the Rural Development and Agricultural ones in Queimados and Comitê Guandu were done, as well as the monitoring of the acts of the participants in the activities of hydro resources. Based on the modeling and implementation of the Basis and the Data from Queimados the programs Arc View 3.2 and 9.0 were utilized (developed by the Environmental System Research Institute ESRI), as well as the digital file from the 2000/IBGE Census (Territorial paths county and variable sectors). The assessment of the potential of the town about the issue related to the hydro-resources made by the governmental and social participants was realized through the analyses of the Plan of the Bay of the Guandu and Plan of the Town and of the interest of the civilians about the under-basins. Regarding the observed characteristics, and based on the data and the analyzed documents, it is concluded that the Town of Queimados participates on the patters of the Strategic Plan of Hydro-Resources valid by its Directive Plan through politics that reach the regional integration, allowing measures that foster improvement in the quality of life of the population of the under-basins Poços / Queimados and, as a consequence, of the entire population fueled by the water originated from the basin of the river Guandu, proving that the consolidation of the process of Integrated Management of Hydro Resources is possible with the integration of the society, the government and the users, since these seek for a unique objective.

>Magister Scientiae - MSc / This study has been conducted to accurately determine fluid saturation within Fula sub-basin reservoirs which is located at the Southern part of the Republic of Sudan. The area is regarded as Shaly Sand Reservoirs. Four deferent shaly sand lithofacies (A, B, C, D) have been identified. Using method based on the Artificial Neural Networks (ANN), the core surrounding facies, within Fula reservoirs were identified. An average shale volume of 0.126 within the studied reservoirs was determined using gamma ray and resistivity logs. While average porosity of 26.7% within the reservoirs was determined using density log and the average core grain density. An average water resistivity of 0.8 Ohm-m was estimated using Pickett plot method. While formation temperature was estimated using the gradient that constrained between surface and bottom hole temperature. Water saturation was determined using Archie model and four shaly sand empirical models, the calculation was constrained within each facies zone to specify a model for each facies, and another approach was used to obtain the water saturation based on Artificial Neural Networks. The net pay was identified for each reservoir by applying cut-offs on permeability 5 mD, porosity 16%, shale volume 0.33, and water saturation 0.65. The gross thickness of the reservoirs ranges from 7.62m to 19.85m and net pay intervals from 4.877m to 19.202m. The study succeeded in establishing water saturation model for the Fula sub-basin based on neural networking which was very consistent with the core data, and hence has been used for net pay determination.

No description available.

>Magister Scientiae - MSc / Southern offshore basins of South Africa are well known as potential provinces of hydrocarbon exploration and production. The complex nature of the Bredasdorp sub-basin’s syn-rift architecture (transform fault system) can have adverse effects on reservoir distribution due to periodic local and regional uplift of horsts and grabens. This present investigation focusses on an integrated approach of the 1AT1-V horizon or early Cretaceous sediments in the Bredasdorp sub-basin to identify the depositional environment and provenance of these sediments as well as their role in regionally complex compositional heterogeneities associated with the late stage rifting of Gondwana break-up. An integrated seismic, sedimentological (including petrography and geochemistry) and ichnologic analysis of the 1AT1-V horizon sediments showed an overall lower regressive element complex assemblage set and an upper transgressive element complex assemblage set that occurred as a >120m thick succession. The analysis identified a mixed-energy deltaic succession followed by an estuarine succession. The 1AT1-V interval (late syn-rift) consisted of nine sedimentary facies associations (and associated petrofacies) on a dipslope setting with variations occurring along the strike and the downdip depositional slope areas. Two overall sequences were identified as a lower regressive and upper transgressive sequence (Element complex assemblage sets). The regressive sequence consisted of middle to distal delta front lobe fringes, hyperpycnal event beds (sourced from basement highs), offshore migrating tidal bars (and associated inter-bar regions), distal mouth bars, terminal distributary channels (and associated inter-terminal distributary regions). The distal delta plain to proximal delta front consisted of interdistributary bays, distributary channels, crevasse splay sub-deltas, mouth bars, tidal flats and offshore embayments. In the laterally isolated depocenter, these deposits also consisted of basement high slopes with upliftment of the basement highs leading to proximal/central embayment to regressive shoreface/foreshore environments. These sequences consisted generally of low diversity and intensities (impoverished abundances) of trace fossils. The paleoclimate inference from this sequence indicates a humid climate with intermediate degrees of weathering intensities (possibly fluctuating arid-humid conditions). The transgressive sequence consisted of estuarine sedimentation with the occurrence of tidal sand ridges and compound dune fields, embayment facies and tidal bars. These sequences consisted of relatively higher ichnodiversities and intensities than their relative regressive sequences. The paleoclimate inference during these times consisted of more arid to semi-arid settings with low degrees of weathering in the source terrain. Local tectonic upliftment and subsidence, with exposed basement highs, gave rise to differential process regimes (tidal, wave and fluvial) and hence depositional facies in the diachronous updip/downdip areas (spatial) and within-stratigraphic (temporal) variations. There are several modern analogues that are similar to the 1AT1-V horizon sequence and they are the Mahakam, Ganges-Brahmaputra, Po, Burdekin deltaic and Satpara lake environments Compaction and dissolution diagenetic features as well as transportation were responsible for the major compositional heterogeneities concerning the reservoir quality and distribution. Proximal and distal sources were identified with first cycle and polycyclic sediments being deposited in the northern and southern part of the basin during the late stages of rifting in the Bredasdorp sub-basin. The provenance lithology has been identified as recycled sedimentary rocks (and their meta-equivalents) with an ultimate source terrain that was largely felsic in nature (Cape granite suite). The northern part of the studied section is suggested to have received sediments from the main metasedimentary rocks of the Cape fold belt (including the Table Mountain Group and Bokkeveld Group) whereas the southern sections received more sediments from the basement highs (recycled Malmesbury Group (and Pre-Cape sediments) and Cape granite suite), which is further supported by seismic data. Provenance analysis revealed that the Cape Fold belt (most recent collision) was possibly a provenance terrain but overprinting of several collisions are also acknowledged. The tectonic setting was envisaged to be of a rifted margin during the break-up of Gondwana. This compositional heterogeneity due to facies and provenance-related terrains had major consequences to the reservoir quality and distribution from the northern part to the southern part of the studied section

As sub-bacias Rincón Blanco e Cerro Puntudo são depocentros pertencente à parte norte da Bacia de Cuyo, que está exposta em um terreno alóctone da Pre- Cordilheira, Andes Centrais, Argentina. Este terreno é descrito como parte do Supercontinente Laurentia, que foi adicionado ao protomargin Gondwana durante o Oroviciano. A bacia, que é um rifte Triássico, foi preenchida predominantemente de sedimentos clásticos e material vulcânico, vulcanclástico e piroclástico em ambiente continental, e é composta de vários meio-grabens assimétricos conectados por zonas de acomodação. Análises isotópicas de UPb e Lu-Hf em zircão foram realizadas nas unidades do embasamento, rochas vulcanoclásticas rochas e tufos de ambas as sub-bacias triássicas. O embasamento, representado por rochas vulcânicas andesíticas, foi datado em 269,9 ± 2,9 Ma com idades modelo de Hf de 1,34 a 1,60 bilhões de anos (Ga). As rochas vulcanoclásticas são compostas por zircões com idades de 238 a 1433 milhões de anos (Ma), com moda principal no Permiano-Triássico e Esteniano (1,0 a 1,2 Ga). Riolito e tufos triássicos formaram-se entre 246 e 230 Ma e têm idades modelo Hf variando de 1,02 a 1,50 Ga. Assim, as rochas vulcanoclásticas presentes apresentam dominantemente idades mesoproterozóicas, as quais são correlacionados ao Evento Grenviliano. Alguns grãos de zircão mostram idades modelo Hf paleoproterozóicas, que são interpretadas como sugestiva proveniência do Supercontinente Gondwana. A presença de idades mesoproterozoica dominante sugere que o magmatismo ácido associado a Bacia do Cuyo e o próprio Terreno Alóctono Cuyano tenha um embasamente Grenviliano. / The sub-basins Rincón Blanco and Cerro Puntudo are depocenter belonging to the northern part of the Cuyo Basin, exposed in an allochthonous terrane of Laurentia that was added to the Gondwana protomargin and now exposed in the Precordillera Argentina. The rift basin was filled predominantly of pyroclastic and continental clastic sediments, and is composed of many asymmetric grabens half-linked by accommodation zones. U-Pb and Lu-Hf zircon isotope analyses were carried out in the basement units and volcanoclastic rocks and tuffs of both Triassic sub-basins. Basement rocks were dated at 269.9±2.9 Ma with Hf model ages 1.34 to 1.60 Ga. The volcanoclastic rocks contain zircons crystallized from 238 Ma to 1433 Ma with main peak at Permian-Triassic and Stenian (1.0 to 1.2 Ga). The Triassic rhyolite and tuffs formed between 246 and 230 Ma and have Hf model ages ranging from 1.02 to 1.50 Ga. Indeed, the volcanoclastic rocks present dominant Mesoproterozoic ages, mostly correlated to the Grenvillian. Some zircon grains show Hf Paleoproterozoic model ages which are interpreted to be part of Gondwana cratonic areas. The presence of dominant Mesoproteorzoic favored the hypotheses of a Grevillian basement for the related acid magmatism of the Cuyo Basin and allocthonous Cuyan Terrane.

As sub-bacias Rincón Blanco e Cerro Puntudo são depocentros pertencente à parte norte da Bacia de Cuyo, que está exposta em um terreno alóctone da Pre- Cordilheira, Andes Centrais, Argentina. Este terreno é descrito como parte do Supercontinente Laurentia, que foi adicionado ao protomargin Gondwana durante o Oroviciano. A bacia, que é um rifte Triássico, foi preenchida predominantemente de sedimentos clásticos e material vulcânico, vulcanclástico e piroclástico em ambiente continental, e é composta de vários meio-grabens assimétricos conectados por zonas de acomodação. Análises isotópicas de UPb e Lu-Hf em zircão foram realizadas nas unidades do embasamento, rochas vulcanoclásticas rochas e tufos de ambas as sub-bacias triássicas. O embasamento, representado por rochas vulcânicas andesíticas, foi datado em 269,9 ± 2,9 Ma com idades modelo de Hf de 1,34 a 1,60 bilhões de anos (Ga). As rochas vulcanoclásticas são compostas por zircões com idades de 238 a 1433 milhões de anos (Ma), com moda principal no Permiano-Triássico e Esteniano (1,0 a 1,2 Ga). Riolito e tufos triássicos formaram-se entre 246 e 230 Ma e têm idades modelo Hf variando de 1,02 a 1,50 Ga. Assim, as rochas vulcanoclásticas presentes apresentam dominantemente idades mesoproterozóicas, as quais são correlacionados ao Evento Grenviliano. Alguns grãos de zircão mostram idades modelo Hf paleoproterozóicas, que são interpretadas como sugestiva proveniência do Supercontinente Gondwana. A presença de idades mesoproterozoica dominante sugere que o magmatismo ácido associado a Bacia do Cuyo e o próprio Terreno Alóctono Cuyano tenha um embasamente Grenviliano. / The sub-basins Rincón Blanco and Cerro Puntudo are depocenter belonging to the northern part of the Cuyo Basin, exposed in an allochthonous terrane of Laurentia that was added to the Gondwana protomargin and now exposed in the Precordillera Argentina. The rift basin was filled predominantly of pyroclastic and continental clastic sediments, and is composed of many asymmetric grabens half-linked by accommodation zones. U-Pb and Lu-Hf zircon isotope analyses were carried out in the basement units and volcanoclastic rocks and tuffs of both Triassic sub-basins. Basement rocks were dated at 269.9±2.9 Ma with Hf model ages 1.34 to 1.60 Ga. The volcanoclastic rocks contain zircons crystallized from 238 Ma to 1433 Ma with main peak at Permian-Triassic and Stenian (1.0 to 1.2 Ga). The Triassic rhyolite and tuffs formed between 246 and 230 Ma and have Hf model ages ranging from 1.02 to 1.50 Ga. Indeed, the volcanoclastic rocks present dominant Mesoproterozoic ages, mostly correlated to the Grenvillian. Some zircon grains show Hf Paleoproterozoic model ages which are interpreted to be part of Gondwana cratonic areas. The presence of dominant Mesoproteorzoic favored the hypotheses of a Grevillian basement for the related acid magmatism of the Cuyo Basin and allocthonous Cuyan Terrane.