Sedimentary Geology
Mostrando 13-24 de 25 artigos, teses e dissertações.
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13. Contribution of the acid volatile sulfide in the control of metal bioavailability in sediments of the Morrão river, estuary system of Santos-Cubatão (SP) / Contribuição dos sulfetos volatilizados por acidificação no controle da biodisponibilidade de metais em sedimentos do rio Morrão, sistema estuarino de Santos-Cubatão (SP)
Estuaries, in general, reducer environments in which anthropogenic activities could result in high metal levels in the sediments. Sulfides are important phases in the control of the concentration of some free metals in those sediments. The majority of sulfides in sediments occurs as iron bisulfides and iron monosulfide, being the last the most reactive. Due
Publicado em: 2007
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14. Hydrothermal alteration of the Cerro La Mina gold prospect, Los Menucos, Patagonia Argentina : geology, remote sensing and stable isotopes / Alteração hidrotermal do prospecto aurifero Cerro La Mina, Los Menucos, Patagonia Argentina : geologia , sensoriamento remoto e isotopos estaveis
The epithermal Cerro La Mina prospect, located in the Los Menucos region, Patagonia Argentina, is currently being explored for epithermal precious-metal mineralization. Triassic hydrothermal activity produced intense alteration of rhyolites, andesites, ignimbrites, and tuffs of the Middle- to Late Triassic Los Menucos Group, in the Somún Curá massif. The u
Publicado em: 2007
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15. Integration of remote sensing (SRTM and RADARSAT-1) geology, gravimetry and magnetometry date as an aid to a morphostructural study in the Uatumã River area, Amazon Basin / Integração de dados de sensoriamento remoto (SRTM e RADARSAT-1), geologia, gravimentria e magnetometria para estudo morfoestrutural da área do Rio Uatumã, Bacia do Amazonas
Drainage network automatically extracted from a SRTM digital elevation model was combined with geologic, gravity and magnetometry data for morphostructural study in the region of the Uatumã River, Amazonas Sedimentary Basin. Data interpretation allowed the identification of different drainage patterns, including trellis, pinnate, contorted, annular and angu
Publicado em: 2006
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16. Caracterização preliminar da hidrogeologia e meio ambiente no município de Monções/SP - uma contribuição à gestão dos recursos hídricos / Preliminary characterization of the hydrogeology and environment in the municipality of Monções/SP - a contribution to hydrics resources management
This work aims the hydrogeologic investigation of Monções municipality (city in the NW São Paulo State - Brazil) where it has been estimated to exist an amount of 61 deep wells exploring two aquifers with different porosity, the Adamantina Aquifer (granular) and Serra Geral Aquifer (fractured). The reason of better investigation is both are responsible by
Publicado em: 2006
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17. Tectonic evolution of the Maranco-Poço Redondo Domain : records of the Cariris Velhos and Brasiliano orogenesis on the Sergipano belt, NE Brazil / Evolução tectonica do dominio Maranco-Poço Redondo : registro das orogeneses Cariris Velhos e Brasiliana na Faixa Sergipana, NE do Brasil
This Thesis aims to advance in the geological knowledge of the Sergipano Belt, by studying the tectonic evolution for two within seven lithotectonic domains: the Marancó -Poço Redondo Domain. To reach the objective a detailed field work, that used four geological maps (1:100.000) from the Carira Project (PLGB, DNPM-CPRM, 1988) as base maps and a Landsat im
Publicado em: 2005
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18. InvestigaÃÃes metodolÃgicas sobre o monitoramento da subsidÃncia do solo devido à extraÃÃo de Ãgua subterrÃnea - caso da RegiÃo Metropolitana de Recife
Soil subsidence is a serious phenomenon that consists in ground settlement caused by fluid removal from the soil and underneath layers with reduction of the soil support capacity. Several metropolitan regions have damage due to subsidence occurrence. Many countries have registered subsidence cases due to groundwater overexploitation in sedimentary and carst
Publicado em: 2005
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19. Caracterização geológico-geofísica do meio aqüífero fissural : uma contribuição aos modelos de fluxo e armazenamento de água subterrânea
Northeastern Brazil is mainly formed by crystalline terrains (around 60% in area). Moreover, this region presents a semi-arid climate so that it is periodically subject to drought seasons. Furthermore, ground water quality extracted fromwells usually presents poor quality because of their high salinity contents. Nevertheless, ground water is still a very imp
Publicado em: 2004
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20. Geologia, Geocronologia, Geoquímica e Petrogênese das Rochas Ígneas Cretácicas da Província Magmática do Cabo e suas Relações com as Unidades Sedimentares da Bacia de Pernambuco (NE do Brasil)
The area studied forms a thin NNE-directed belt situated south of Recife town (Pernambuco state), northeastern Brazil. Geologically, it comprises the Pernambuco Basin (PB), which is limited by the Pernambuco Lineament to the north, the Maragogi high to the south and the Pernambuco Alagoas massif to the west, all of them with Precambrian age. This thesis repo
Publicado em: 2003
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21. SIMULATION OF TRANSPORT AND DEPOSITION OF SILICICLASTIC SEDIMENTS IN PLATAFORM, SLOPE, AND BASIN ENVIRONMENTS / SIMULAÇÃO DE TRANSPORTE E DEPOSIÇÃO DE SEDIMENTOS SILICICLÁSTICOS EM AMBIENTES DE PLATAFORMA, TALUDE E BACIA
Sedimentary Geology deals with the study of the physical, chemical and biological processes operating in the surface of the Earth, not only in the present days, but also along all History. Therefore, it can be applied in miscellaneous fields, as, for example, in the study of fossils fuels formation. One of the main focus of sedimentary geology inhabits in de
Publicado em: 2002
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22. Estudos sedimentolÃgicos; MorfodinÃmicos e da vulnerabilidade das praias da piedade; Candeias e Barra das Jangadas - municÃpio do JaboatÃo dos Guararapes-PE
O litoral do municÃpio do JaboatÃo dos Guararapes, formado pelas prais da Piedade, Candeias e Barra das Jangadas, localizado na faixa costeira sul do Estado de Pernambuco, Ã caracterizado por depÃsitos sedimentares de origens distintas, ou seja, continentais, marinhos e/ou transicionais, representados pela FormaÃÃo Barreiras, TerraÃos Marinhos Pleisto
Publicado em: 1999
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23. Avaliacao dos produtos integrados TM-Landsat, Radarsat e gamaespectrometricos na caracterizacao tectonica e mapeamento geologico de area mineralizada em ouro na regiao de Alta Floresta - MT / Landsat TM, Radarsat and airborne gamma ray digital data integrated products evaluation for tectonic characterization and geological mapping of a gold mineralized area, "Alta Floresta" region MT
The Alta Floresta region, located in the northern part of the Mato Grosso State, is characterized by an almost flat terrain, with intense anthropogenic activities, a high potential in terms of gold mineralization, and a poor geological knowledge. This research has focussed on the application of digital remote sensing integrated products (TM-Landsat/Standard
Publicado em: 1999
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24. Análise de terrenos na porção setentrional da Província Borborema, NE do Brasil: integração de dados geológicos e gravimétricos
It is presently assumed that the Borborema Province resulted from a complex collisional process associated with the convergent movement of plates, possibly involving amalgamation and accretion of microplates. This process was consolidated at the end of the Brasiliano event. It is investigated the possible limits for the tectonostratigraphic terranes in the n
Publicado em: 1999