840 resultados para Província Paranaense
Resumo:
Eight Mesoproterozoic granite suites are recognized in the Rondônia Tin Province, called Serra da Providência Intrusive Suite (1606-1532 Ma), Rio Crespo Intrusive Suite (1500 Ma), St. Anthony Intrusive Suite (1406 Ma), Teotonio Intrusive Suite (1387 Ma ), Santa Clara Intrusive Suite (1082-1074 Ma) and Younger Granites of Rondônia Intrusive Suite (998-974 Ma), represent successive magmatic type A (anorogenic) and the intra-plate basement rocks intruded in the metamorphic complex named Jamari separated into two distinct lithologic associations, a ortogneiss (U-Pb from 1.76 to 1.73 Ga) and a paragneiss (1675 + / - 12 Ma). Tin mineralization are widely found in the Tin Province and are associated with granitic intrusions known Mesoproterozoic more closely with the last two magmatic events, represented by the Santa Clara and Younger Granites of Rondônia. The tin mineralization are of primary and secondary, with the primary form deposits of different structural styles and is presented in the form of endo-or exogreisens, veins, stockworks and pegmatites. The secondary mineralization are related to natural processes of weathering and erosion of primary rocks, leading to placer deposits classified as colluvial, eluvial and colluvial-alluvial. The Target Alvo Sol Nascente is located in the central-eastern Rondônia Tin Province and has basement rocks of the metamorphic-magmatic region represented by Jamari Complex intrusive suites and Sierra Providence and Rio Crespo. The last tectonic event spa in the area was responsible for the intrusion of Younger Granites of Rondônia (São Carlos and Caripuanã Massifis). The anomalous levels of tin, sufficient to operate (Mina Rising Sun), indicate that there was possibly mineralization event, evidenced by pegmatite veins well defined, easily found relatively close to mine. Plaque deposits associated with Quaternary sedimentary sequences can also be observed
Resumo:
Os crustáceos anomuros do gênero Aegla Leach (1820) são animais bentônicos característicos das águas continentais da América do Sul. Podem ser encontrados em arroios e rios de correnteza, ocultos sob pedras e detritos vegetais. Foram descritas 61 espécies desse gênero, que se encontram distribuídas pela região Neotropical com limites norte no município de Franca, no Estado de São Paulo, Brasil e sul na Ilha de Madre de Diós, na Província de Última Esperanza, Chile. Esses animais são considerados importantes elos nas cadeias alimentares dos ambientes líminicos, atuando como predadores de larvas aquáticas de insetos e são presas de aves, rãs, jacarés e peixes. Podem também ser utilizados como bioindicadores na avaliação de qualidade das águas onde ocorrem, uma vez que são bastante sensíveis a mudanças do ambiente. Apesar do expressivo número de espécies do gênero Aegla descritas, existem poucos estudos sobre sua dinâmica populacional, especialmente no que diz respeito a análises enfocando crescimento relativo. O objetivo deste trabalho foi caracterizar o crescimento relativo da espécie Aegla castro no município de Itatinga, interior do Estado de São Paulo. Os eglídeos foram coletados mensalmente durante um ano (Mar/07 a Fev/08) no município de Itatinga. Os animais amostrados foram obtidos mediante esforço de coleta e armadilhas. Para o primeiro método, os exemplares foram coletados com puçás ou peneiras posicionados próximos a pedras e seixos, os quais foram removidos manualmente para desalojar os animais que porventura estejam ali abrigados. No segundo método, foram instaladas armadilhas iscadas no final do período da tarde e recolhidas na manhã do dia seguinte. Os exemplares capturados tiveram os sexos determinados com base em caracteres sexuais secundários (posição da abertura do par de gonóporos... (Resumo completo, clicar acesso eletrônico abaixo)
Resumo:
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Resumo:
In this paper it is proved that hermitian forms over quaternion division algebras over local fields of characteristic two are classified by their dimension and discriminant.
Resumo:
Pós-graduação em Geologia Regional - IGCE
Resumo:
Pós-graduação em Geociências e Meio Ambiente - IGCE
Resumo:
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Resumo:
Pós-graduação em Educação - FFC
Resumo:
Our propose in this article is to articulate the ways how women that call themselves lesbians, live and consider the masculinities and the femininities. The discourses were obtained through semi-structured interviews with ten women from different ages, who live in different towns in São Paulo and Paraná states. Theoretical references were sought in poststruturalists authors who approach the social construction of gender and sexes as category analysis, necessary for the reflection of the subjectivity processes that are permeated by materiality and transitoriness that are inherent to social, historical, cultural, political and territorial contexts.
Resumo:
Pós-graduação em Geociências e Meio Ambiente - IGCE
Resumo:
Pós-graduação em Geologia Regional - IGCE
Resumo:
Pós-graduação em Geografia - FCT
Resumo:
Pós-graduação em História - FCHS
Resumo:
The purpose of this study is to characterize the geological subsurface structure of the diabase sill of the Paraná Magmatic Province intruded in the Itararé Group, located near the city of Limeira, in the east-central region of São Paulo state. The magnetometric method served as an important tool defining the igneous body in view of the great contrast between the physical properties of the diabase sill and the host sandstones. Previous cartographic data signaled in region a possible lateral continuity in subsurface, of the various sills that occur in the region. However, the magnetic data obtained herein indicate that the area of occurrence of this body is very restricted and independent of the others observed in the region. The analysis of the radial average power spectrum obtained allowed determine the interval of number of waves adequate for the separation of shallow and deep sources, and thus conclude that the sill of the Limeira region is located more than 100 m deep.
Resumo:
The numeric simulation is an important tool applied in understanding the dynamics of groundwater flow. In a hydrogeological model the processes responsible for groundwater flow are described by numerical formulations that allow the simplification, representation and understanding of the dynamics of the Aquifer System. In this work, a steady state groundwater flow simulation of Urucuia Aquifer System (UAS) part of the Corrente river basin was conducted, using the finite element method through software FEFLOW, to understand the dynamics of groundwater flow and quantify the hydrologic balance. The aquifer system Urucuia lodges in the São Francisco hydrogeological province and corresponds to a set of interconnected aquifers that occur in rocks from Urucuia group in the Urucuia sub-basin described by Campos e Dardenne (1997). The system is a porous media one, in a shape of a thick table mountain, consisting essentially of sandstones. The Corrente river basin is located in UAS in Western State of Bahia and it's one of the main units to maintaining permanent flow (Q95) and average natural flow of the São Francisco river. The simulation performed in this work obtained the following results for the modelled region: horizontal hydraulic conductivity of 3 x 10-4 m/s and vertical one 6 x 10-5 m/s; maximum recharge of 345 mm and minimum of 85 mm/a. It was concluded that: (1) regional groundwater flow has eastbound; with an exception of the extreme northeast portion, where the flow has opposite direction; (2) there are smaller water side dividers with an approximate direction EW, that guide the flow of water to the drainage that cut the aquifer; and (3) the UAS at Corrente river basin can be understood as a free regional aquifer system, isotropic and homogeneous. Regionally, the small lithological variations present in the Urucuia group can be neglected and do not exhibit significant influences on the dynamics of ground water flow