2020-1-1 · The zircon standard CZ3 (561.5 Ma, 551 ppm U) was used for U/Pb and U-content standard, and NBS611 glass was used to identify the position of the mass peak 204 Pb. OGC-1 zircon was used as a 207 Pb/ 206 Pb monitor. Uncertainties of individual ages are quoted at 1σ level, whereas the ages plotted are calculated at 2σ levels (about 95% confidence).
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2006-9-1 · Reconstructions of West Gondwana (De Wit et al., 1988, Porada, 1989, Trompette, 1994, Daziel, 1997) suggest that, prior to the opening of the South Atlantic in the Cretaceous, the São Francisco craton of Brazil was connected to the Congo craton of Africa, creating a single continental block that had the shape of a lopsided upside-down ''U'' (). ...
The post-collisional G5 thermal event (520-480 Ma), related to tectonic collapse of OA, is recorded in metagraywackes (monazite U-Pb) and granites (monazite and zircon U-Pb) between 523 and 495 Ma.
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The N-S trending Manhuaçu-Santa Margarida shear zone system extends for ca. 300 km in eastern Minas Gerais. As one of the main structures of …
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2018-7-13 · An anthrax vaccine licensed by the U.S. Food and Drug Administration (FDA) and produced from one non-virulent strain of the anthrax bacterium, is manufactured by BioPort Corporation, subsidiary of Emergent BioSolutions. The trade name is BioThrax, although it is commonly called Anthrax Vaccine Adsorbed (AVA).
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2018-10-1 · On the afternoon of Thursday (18) the young [woman] who fell from the 12th floor of a residential building on Tomás Gonzaga Street, in the neighborhood of Bom Retiro, Ipatinga-MG died from her injuries. The information has been …
2018-10-1 · Low Th/U ratios (<0.2) and typical grain appearance of small pseudo-rounded zircons with soccer ball morphology are the main characteristics to classify those few grains as neoformed metamorphic crystals. Their individual U-Pb ages range from c. 630 Ma to c. 565, covering a broad timing related to the Brasiliano orogeny (cf. Degler et al., 2017).
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2021-11-22 · DEFESAS DE TCCS DE ENGENHARIA DE PRODUÇÃO DE OUTUBRO DE 2020 (Atualizado) Defesa de TCC de Lucas Rafael Castro de Sousa e Thaynara Lopes dos Santos. Título: Aplicação das Ferramentas da Qualidade para Investigação e Análise Das Possíveis Causas das Altas Divergências nos Desvios de Estoque de Minério de Ferro.
This study reports the effect of different concentrations of nisin (0, 100 and 500 IU mL−1) against Staphylococcus aureus in Minas Traditional Serro cheese manufactured with raw milk.
In contrast, a large set of 0.62-0.52 Ga U-Pb ages reported for the JFC rocks better defines the age of regional metamorphic overprint (Machado et al. 1996 Machado N., Valladares C., Heilbron M., Valeriano C.M. 1996. U-Pb geochronology of the central Ribeira Belt (Brazil) and implications for the evolution of the Brazilian Orogeny.
2020-9-22 · Symmetrya: Ouça o tema oficial do Armageddon Metal Festival 31/05/2019. A banda catarinense de Heavy Metal SYMMETRYA acaba de lançar a música tema do Armageddon Metal Festival, que será realizado neste sábado, 01/06, em Joinville/SC, no Expoville Convetion Center, ao lado de bandas como Ratos de Porão, The Mist, Gangrena Gasosa, Tuatha de Dannan, …
2008-7-1 · The Ribeira belt extends for 1400 km along the Atlantic margin (Almeida, 1967, Cordani et al., 1967, Almeida et al., 1973, Cordani et al., 1973) is a complex orogenic belt developed along the southern and southeastern borders of the São Francisco craton (Fig. 1a).Some authors attribute its origin to the convergence between the São Francisco/Congo …
2016-7-1 · Zircon grains constitute a homogeneous population of prismatic crystals (ratio 2:1) with original igneous features, such as oscillatory zoning and high 232 Th/ 238 U (0.31–1.08), and some evidence of metamorphism, like thin metamorphic rims and 232 Th/ 238 U lower than 0.05 .
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2018-6-1 · Similarly the weighted average Pb 207 /U 235 and Pb 206 /U 238 ages are 1955 ± 14 Ma (MSWD: 13, n = 26) and 1953 ± 24 Ma (MSWD: 12, n = 26) respectively. 5.2.2.3. Dom Silvério Group, Barra. Monazite grains in this sample are <100 μm in size and most commonly <50 μm. Grains were found throughout the matrix of the sample but none were found ...
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