Métodos geoelétricos empregados na caracterização e monitoramento de anomalias inerentes à infiltração controlada de vinhaça

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Evaluation of sediment production and siltation in a small earth dam in Fernandópolis, SP

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Gênese de solos coesos do leste maranhense: relação solo-paisagem

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Filtros UV na água de abastecimento público na região da bacia hidrográfica tietê-jacaré: desenvolvimento de método, estudo de ocorrência e concentrações ambientais

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Fidelidade composicional de assembléias de braquiópodes (Rhynconelliformea) na plataforma e talude continental: implicações paleontológicas e geológicas

This paper deals with the Compositional Fidelity of the brachiopods assemblages, dominated by Bouchardia rosea, on the outer shelf and continental slope along São Paulo State. Samples were obtained during the Revizee-Score-Sul-Benthos program. The sampled stations are in sites as depth as 90 to 600 meters, along the outer continental shelf, the shelf break and the top of continental slope. The fidelity estimates were obtained directly from the comparisons between living biota and dead shells, from the same collecting stations. Data come from 66 sampling stations, and the vast majority of the Bouchardia rosea individuals collected (n=2393) were dead (n = 2342, 97.9%). Only 51 individuals were collected alive. When pooling the data from all collecting stations the dead/live frequency is of 2,1% only. The occurrences of Bouchardia rosea shells in siliciclastic bottoms are reduced and living individuals were not found on this type of bottom, at least during the sampling program. These results suggest low compositional fidelity (live-dead) or high compositional mismatch, pointing to a recent decrease in this specie population. The low compositional fidelity of the Bouchardia rosea assemblages in outer shelf sites may be due to changes in seawater temperature, nutrient availability and population history. All these issues must be investigated in the near future

Análise histoquímica do epitélio de escamas de Prochilodus lineatus exposto a águas contaminadas

O Lago Azul (Rio Claro – SP), oriundo da canalização do Córrego Servidão, vem sofrendo com problemas de inundação, infiltração, erosão e contaminação das águas por esgoto. Alguns dos compostos mais despejados nas águas de rios, e responsáveis por tais problemas de contaminação são os detergentes biodegradáveis, que têm sido alvo de críticas, não apenas devido aos problemas de biodegradação, mas também devido ao fato de provocarem o fenômeno conhecido como eutrofização. A preocupação com a possível contaminação das espécies do Lago Azul levou a prefeitura de Rio Claro, junto da SABESP, a iniciar estudos das águas e sedimentos do Lago Azul. Visando essa preocupação o projeto pretende analisar os efeitos da água do Lago Azul e de uma diluição de detergentes em indivíduos de Prochilodus lineatus (Curimbatá), comparados a um controle exposto a água pura clorada do poço artesiano situado no Campus da UNESP de Rio Claro. O projeto procurou caracterizar o epitélio que recobre as escamas da espécie tratada, haja vista que se trata de uma estrutura inexplorada na literatura. A partir desses dados, análises foram realizadas através da detecção de possíveis alterações morfológicas na histologia e histoquímica das células epiteliais de escamas para avaliar os efeitos dos possíveis agentes contaminantes. Para as análises histológicas o material foi processado em resina para as técnicas de Alcian e PAS para detecção de polissacarídeos ácidos e básicos, Azul de Bromofenol para detecção de proteínas, Picrossirus Red para detecção de fibras colágenas I e III e Hematoxilina-Eosina para analisar alterações morfológicas. Os dados coletados foram analisados com auxílio de um microscópio Leica DM 2000, dotado de câmera para captura de imagens

Contextualização deposicional da formação Rio Claro no município de Paulínia/SP empregando simulações estocásticas

The Rio Claro Formation, Tertiary-Quaternary age, is composed of unconsolidated sediments deposited by fluvial systems. In Paulínia (SP) region geological studies comprising sedimentological, structural and geomorphological aspects indicate that the Rio Claro Formation is constituted by deposits of a meandering fluvial system. Data from SPT drillings were used to obtain sedimentary textural information in order to generate stochastic stratigraphic models. Particle size analysis was carried with the core samples which resulted in the distinction of five litofacies, three of which can be grouped into only one mudstone unit. The other two facies represent channel belt facies, being clayey sands and medium to coarse sands. Geostatistical modeling of the stratigraphic architecture followed together with correlation of analogue outcrop data and conceptual models for this type of depositional system. 100 models were generated with the SPT drillings and 50 models were generated with data from an analogue outcrop, which allowed constraining of both simulation sets to the depositional model given for the region. T-PROGS methodology has good applicability in simulating stratigraphic frameworks and its inherent limitations may be approached with parallel studies, such as stochastic modeling of analogue outcrops or geophysical methods

Caracterização estrutural do Lineamento de Piúma e sua influência na porção norte da Bacia de Campos

The detailed study of the Brazilian continental margin basins became possible with the advancement of geophysical tools, with emphasis on seismic reflection. Characterizing the structural and stratigraphic elements of Brazil’s marginal basins they realized that there was a relationship with structures present on the adjacent continental basement. So many works began to be made to understand this relationship and know the major factors that influenced the evolution of the continental margin. The study area of this work includes the northern portion of the Campos Basin and the continental outcropping adjacent areas, which corresponds to the northern of Rio de Janeiro state and the southern of Espirito Santo state. This area stands an important structural feature of NW-SE direction with a projection to the Campos Basin called Lineamento de Piúma. The outcropping basement rocks belongs to the Ribeira Belt which was bonded to other mobile bands forming the continent Western Gondwana during the Brasiliano Cycle, which later fragmented giving rise to the Atlantic Ocean. The opening of the ocean results on the formation of the marginal basins of Brazil. These basins have continental, transitional and marine facies. On Campos Basin the continental phase resulted on the formation of horsts and grabens bounded by synthetic and antithetic faults. Continuing rifting formed the saline lakes that deposited siliciclastic and carbonate sediments. The transitional phase resulted on thick packages consist of evaporites (halite and anhydrite) that was deposited in lagoon environment, tectonically quiet arid and semi-arid. The marine phase it deposited siliciclastic and carbonate in the Campos Basin resulting in shales, marls, limestones, ritmito, turbidites, sandstones and others. The objective of this study is to investigate the possible continuation... (Complete abstract click electronic access below)

Foraminíferos em um transecto de manguezal da Ilha do Cardoso (SP): distribuição em função da frequência de inundação e modelos para reconstruções paleoambientais no setor de petróleo & gás

O estudo do conteúdo de foraminíferos de 8 amostras de sedimentos superficiais coletados em manguezal do norte da Ilha do Cardoso, sul do Estado de São Paulo, no verão (período chuvoso) de 2001, ao longo de um transecto no sentido da Baía de Trapandé para o interior, revelou dois segmentos distintos: a) uma planície inferior lamosa, com menor tempo de exposição sub-aérea e maior diversidade específica, dominada por Ammotiumcassis, A.salsum, Arenoparrella mexicana e Trochamminainflata, com abundância expressiva de Caroniaexilis na parte mais baixa e de Miliammina fusca na parte mais alta; b) uma planície superior arenosa, com maior tempo de exposição sub-aérea e menor diversidade, dominada por M. fusca e com abundância expressiva de T. inflatana parte mais baixa. Os sedimentos investigados são colonizados por foraminíferos exclusivamente aglutinantes, representados por 21 espécies de 16 gêneros. Dados de abundância relativa, riqueza, diversidade e equitatividade das espécies ao longo do transecto são apresentados, bem como os valores de salinidade, pH, oxigênio dissolvido e temperatura, medidos a partir da água intersticial dos sedimentos no momento da coleta das amostras. São feitas comparações com um estudo anterior, similar, que focalizou amostras coletadas, nos mesmos pontos, no inverno (período seco) de 2002. Os resultados obtidos interessam às análises de sistemas estuarinos modernos e antigos, bem como a projetos envolvidos com o diagnóstico do estado de conservação de áreas litorâneas, sendo úteis ao Setor de Petróleo e Gás

Influência do uso e ocupação da terra na dinâmica do rio São Lourenço - estado de Mato Grosso

This study aims to analyze the relationship between deforestation in the highlands of the São Francisco River Basin over the past 45 years due to agricultural activities and livestock , and the observed changes in the dynamics of the same river in the Pantanal of Mato Grosso , as sinuosity , discharge sediment , flow, points of erosion and morphological changes . It is observed that deforestation occurs in the plain and on the plateau , however with much more intensity in the latter, provided the extensive land use in the region . Thus, the study aims to contribute to a better understanding of the relationships between the uplands and flood plains . To achieve this goal will be used proper methods of geomorphological and geological sciences , with emphasis on the use of satellite imagery and hydrological data side . The research will include the following steps : I) literature review ; II) characterization geomorphological , geological , hydrological and climate , III) Dynamics of vegetation ; IV) Analysis of cause-effect relationships in the river system . Product analysis will suggest preventive measures to minimize the effects caused by the practices of use and occupation in the study area, as well as other regions suffer the same impacts

Caracterização geológica e estrutural da porção centro-norte do greenstone belt de Faina, Faina-GO

The area where the study was conducted is located in the central-western state of Goias. It geologically inserts the northern portion of the Greenstone Belt of Faina which belongs to the Archean terranes that fits in Brasília Fold Belt and Tocantins Structural Province. This region is known for its greenstone lode gold potential and it was heavily exploited by pioneers and prospectors, leaving many records for where they have been through. Preliminary work done by Orinoco Brasil Mineração in their required areas at the region showed that the environment is promising for gold mineralization and that the ore is controlled by structures. Therefore the objectives of this work were the geological and structural mapping in semi detail scale to improve geological, stratigraphic and structural controls present attributing possible ore understanding. With the development of the work there were recognized on the desktop three structural domains separated by a thrust fault. For each domain were discriminated the geological units ranging in gneisses, quartzites formed from coarse sediments arcoseanos, and schists. By mapping structures there were found five deformation phases, Dn-2, Dn-1, the Dn event that generated the main foliation (Sn) in high representation and two post-stages Dn with brittle late manifestations. The detail mapping of the Rattlesnake Gallery showed that the mineralized quartz vein is consistent with axial-plane foliation Sn-2 belonging to the oldest deformation Dn-2 phase and that the high grade is distributed in the hinge region folds of the same phase

Análise de fácies sedimentares e de paleocorrentes das sequências inferiores do grupo Itararé, Centro-Leste do estado de São Paulo

The Itararé Group is the record of one of the most significant glaciation events of the Gondwana. Of neocarboniferous-eopermian age, this unit has facies associations interpreted as resulted from shallow marine settings with glacial and deglacial water influence. The role of glaciers on the tectonic-sedimentary processes of the Itararé Group is striking, as typical facies such as diamictites, tilites, shales and rhythmites with dropstones are generated, besides the existence of glacially striated and polished surfaces. This work had as main goal to contribute to the geological knowledge of the Itararé Group in the central eastern portion of São Paulo State, using as basis outcrops from Itu, Salto and Porto Feliz, and also pertinent bibliographic data and well profiles located in the surrounding areas. About the stratigraphic framework, genetic association and paleogeography of these deposits, this work concludes that the area studied comprises the basal section of the Itararé Group. The stacking of the facies recognized during the field work begins with the striated and polished surfaces of the basement, described in Salto, superposed by tilites and diamictites with glacial movement features. Over these are the turbidites from Itu, associated with the glacier retreat. The outcrops of Porto Feliz are at the top of this succession, with deposits generated by flows with lateral and vertical variations, sometimes with prevalence of tractive conditions, and sometimes with sediments transported largely by suspension. Paleocurrent measurements show main flow directions towards NW, the same as glacial striae, suggesting the influence of reworking of sediments by the meltwater during deglacial periods

Ecologia de sabiás (Turdus spp.) e sanhaços (Thraupis spp.) em área urbana com fragmentos florestais no campus da Unesp de Rio Claro

Sabiás e sanhaços estão entre as aves frugívoras mais comuns em áreas urbanas, sendo os primeiros com ampla distribuição e sanhaços com distribuição neotropical, onde dispersam sementes de uma variedade de espécie de plantas. Analisei o uso do hábitat e aspectos da ecologia, como densidade, abundância, uso do tempo e de hábitats das espécies de sabiás e sanhaços presentes no campus da UNESP de Rio Claro, estado de São Paulo, nas diferentes estações do ano. O estudo foi realizado através da observação das aves ao longo de um transecto onde as variáveis estudadas incluíram o número de indivíduos, hábitat de ocorrência, atividade, distância do transecto, tipo de alimento e estrato de forrageio para os indivíduos de cada espécie. Realizou-se 27 transecções, as quais incluíram áreas abertas (campos), construções (ruas e edificações), e fragmentos florestais, num trajeto de 3,65 km, entre os meses de janeiro e agosto de 2010, em três períodos do dia. Foram registradas cinco espécies de aves, o sanhaço-cinzento, o sanhaço-do-coqueiro, o sabiá-barranco, o sabiá-poca e o sabiá-laranjeira, em um total de 555 indivíduos avistados. Os resultados demonstraram a maior abundancia (283 indivíduos) e densidade (1.47 Indivíduos/ha) para a espécie de sanhaço-cinzento (Thraupis sayaca). Os dados obtidos permitiram inferir um elevado grau de seleção do hábitat utilizado pelas três espécies mais abundantes, ocorrendo preferência por regiões com maior cobertura vegetal arbórea/arbustiva. O forrageamento se apresentou como a principal atividade, entretanto, as espécies de sabiás utilizaram ambos estratos, forrageando invertebrados no solo e frutos na vegetação arbórea, enquanto sanhaços encontraram-se unicamente no estrato arbóreo. Foram encontradas 41 espécies de plantas arbóreas...(Resumo completo, clicar acesso eletrônico abaixo)

Litofácies e relações estratigráficas da formação Aquidauana no nordeste da Bacia do Paraná - São Sebastião do Paraíso (MG)

The Aquidauana Formation is characterized by sandstones of variable granulation, mudstones and diamectites abundant in clay, typical colors like brick red (vermelho tijolo) of glacial, fluvial and lacustrine origin. It’s chronostratigraphic equivalent to the Itarará group from the Neo Carboniferous age, that under the exploratory view, such units represent important intervals in the basin, occurring together with them minerals as well as energy resources as petroleum, underground water and coal – what requires a great paleogeography and stratigraphy knowledge for its exploration. By gathering information from the columnar sections of the area, it was possible to characterize the sedimentary facies, the stacking pattern as well as the association. It was also made an attempt of stratigraphic correlation, which showed great difficulties since glacial environments present a great lateral discontinuity of the facies besides the complex relationship process of formation. As a result, it was obtained 8 sedimentary facies, the lateral and vertical relations and genesis process. It is proposed that the sedimentary environment in the study area is the fluvio glacial, characterized by alluvial systems formed by defrosted water which transport the sediments that are deposited in plains in front of the glacier (distal outwash). Petrographic thin section analysis showed that the transportation process was ineffective. The grains present punctual to lobular contacts, characterizing good porosity and permeability to the rock, varying these qualities according to more or less existence of matrix. The presence of Iron Oxide deposited between the recrystallization border and feldspathic mineral indicates that this rock has possibly presented a primary rubefaction, intensified by alkaline fluid percolation

Water mass reconstruction by Nd isotopic analysis from Mid Atlantic oceanic sediments

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)