Brasilia Belt
Mostrando 13-21 de 21 artigos, teses e dissertações.
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13. Cráton do São Franscisco, kimberlitos e diamantes
The São Francisco Craton is a large stable area in the eastern portion of South America. Its basement comprises Archean terrains that were reworked and amalgamated during Paleoproterozoic tectonic events and later on affected marginally by the Neoproterozoic Brasiliano orogeny, during the amalgamation of West Gondwana. In this work the geological evolution
Publicado em: 2007
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14. Geologia do sudoeste do Estado de Goiás : Integração de dados geológicos e aerogeofísicos de alta densidade
The airborne magnetic and gamma ray spectrometry data related to the Airborne Geophysic Survey Project of the State of Goiás (Block 1) executed between 2004 and 2006 and considered of high density by the acquisition and treatment configuration, were integrated in GIS environment with the existing geologic information, in the SW Goiás region located from th
Publicado em: 2007
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15. Razão de Poisson da crosta superior da região de Porangatu, Goiás, Província Tocantins: um estudo por refração sísmica
This work presents a refined seismic model of compressional waves (Vp) showing the distribution of Poisson ratio along the upper crust of central Tocantins Province, central Brazil, based on two dimensional modelling of the Porangatu seismic refraction data. The Porangatu seismic line begins in the Araguaia Belt (FXA) and continues through the western portio
Publicado em: 2006
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16. Mineralizações de ouro no terreno Almas-Dianópolis-TO : guias de exploração mineral
The distribution of the main gold occurrences and deposits of the Almas-Dianópolis Terrain (TAD), firstly evinced by recognition prospecting in drainage sediments, is controlled by N35-50W/N40-60E shear zones and, less frequently, by NS-shear zones. Gold essentially occurs in quartz veins bordered by albitic, argilic and sericitic alterations associated wit
Publicado em: 2006
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17. Lago Paranoá: lazer e sustentabilidade urbana
This master thesis used both urban and environmental approaches to study the use and conservation of the Lake Paranoá. It is a case study at the local level based on the plans and propositions of the Projeto Orla. More specifically, this thesis described and analyzed the creation and occupation of the lake seashore in the urban context of the Distrito Feder
Publicado em: 2006
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18. Integração de dados de geofísica aérea aplicada à geologia e à prospecção mineral no distrito esmeraldífero de Itabira-Ferros, Quadrilátero Ferrífero, MG.
The Itabira-Ferros area is located in the Quadrilátero Ferrifero region, State of Minas Gerais, and it is known for abundant emerald occurrences. The area is characterized by volcanic metasedimetary sequences of the greenstone belt type (Rio das Velhas Super group) and paleoproterozoic iron formations of Minas Super Group, inserted in granitic bobies (Borra
Publicado em: 2006
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19. U-Pb SHRIMP and Sm-Nd geochronology of the Silvânia Volcanics and Jurubatuba Granite: juvenile Paleoproterozoic crust in the basement of the Neoproterozoic Brasília Belt, Goiás, central Brazil
Idades isótopicas U-Pb SHRIMP e Sm-Nd foram determinadas em rochas metavulcânicas félsicas da Seqüência de Silvânia e Granito Jurubatuba na porção central da Faixa Brasília. Grãos de zircão da rocha metavulcânica da Seqüência de Silvânia e do granito forneceram, respectivamente, as idades de 2115 ± 23 Ma e 2089 ± 14 Ma, interpretadas como id
Anais da Academia Brasileira de Ciências. Publicado em: 2001-09
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20. Magnetotelluric investigation of the lithosphere in the Alto Paranaíba Ígneous Province / Investigação magnetotelúrica da litosfera na província Ígnea do Alto Paranaíba
Magnetotelluric (MT)soundings are presented for the region of Alto Paranaíba Igneous Province (APIP), an important Cretaceous diamondiferous province in western Minas Gerais State. In addition to conventional wideband soundings, suitable for crustal scale investigations, long period MT systems were used to investigate the mantle lithosphere. This study is f
Publicado em: 2001
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21. U-Pb data for granulites of the Anápolis-Itauçu complex: evidence for two high-grade events in the Brasília belt
Anais da Academia Brasileira de Ciências. Publicado em: 2000-12