Alfabetizaçao de idosos no Brasil : O direito á educaçao no olhar de quem aprende

Trata-se de uma pesquisa qualitativa de cunho fenomenológico realizada com idosos em processo de alfabetizaçao que procurou identificar práticas curriculares exitosas no desenvolvimento da oralidade, da escrita e da leitura de alfabetizandos(as) com mais de 65 anos de idade. A inquietaçao que gerou o tema/problema é parte do compromisso do programa de ensino, pesquisa e extensao TEIA - Trabalho Integrado em Alfabetizaçao de Jovens e Adultos que coordenamos no Departamento de Pedagogia da Universidade do Estado de Santa Catarina. Foram selecionados intencionalmente cinco participantes residentes na Regiao da Grande Florianópolis. Do ponto de vista dos processos de leitura e escrita, as entrevistas analisadas apontaram as seguintes dimensoes: o desejo de ler e ampliaçao dos repertórios de leitura por meio da alfabetizaçao; a alegria de ler na terceira idade e o poder da escrita nas diferentes situaçoes da vida. Este trabalho reafirma o compromisso de uma educaçao inclusiva. Entende-se que todos (as) têm o direito de ?dizerem? as suas palavras. Compreender este mundo e reinventá-lo

Mineral chemistry of basalts from DSDP Holes 65-483 and 65-483B

During DSDP Leg 65, a series of holes was drilled into the oceanic basement across the mouth of the Gulf of California to study the composition of the crust and the nature of its construction at a young spreading center. In Holes 483 and 483B, two of the deepest basement holes drilled on this leg, the basement is characterized by an upper sequence of interlayered massive basalts and sediments underlain by a lower sequence of interlayered pillow and massive basalts. Electron microprobe analyses were performed on pyroxene, plagioclase, olivine, spinel, and glass from 14 representative samples of 10 of the 16 major lithologic units. These analyses along with petrographic results can be used to interpret the detailed crystallization history of the basalts. We believe from the results of this study that the basalts were formed by at least a three-stage cooling process, followed by eruption and formation of quench phases. Our data do not support magma mixing.

Petrographic data for samples from DSDP Holes 63-471 and 65-485

Detrital modes of middle Miocene sandstone recovered at Deep Sea Drilling Project Site 471 on the Magdalena Fan support the hypothesis that the fan has been displaced northward from a source hundreds of kilometers to the south near the present mouth of the Gulf of California. The modes are dissimilar to those of modern sand derived from onshore outcrops of Miocene volcanic and volcaniclastic rocks, Neogene sedimentary rocks, and Mesozoic subduction complex. They most closely match sand associated with the mouth of Gulf of California. The overall stratigraphy, sand composition, and diagenesis at Site 471 are consistent with deposition of the Magdalena Fan on young oceanic crust near a spreading ridge at a triple junction.

Rare earth elements of modern seeps from the Gulf of Mexico, the Black Sea, and the Congo Fan

At marine seeps, methane is microbially oxidized resulting in the precipitation of carbonates close to the seafloor. Methane oxidation leads to sulfate depletion in sediment pore water, which induces a change in redox conditions. Rare earth element (REE) patterns of authigenic carbonate phases collected from modern seeps of the Gulf of Mexico, the Black Sea, and the Congo Fan were analyzed. Different carbonate minerals including aragonite and calcite with different crystal habits have been selected for analysis. Total REE content (SumREE) of seep carbonates varies widely, from 0.1 ppm to 42.5 ppm, but a common trend is that the SumREE in microcrystalline phases is higher than that of the associated later phases including micospar, sparite and blocky cement, suggesting that SumREE may be a function of diagenesis. The shale-normalized REE patterns of the seep carbonates often show different Ce anomalies even in samples from a specific site, suggesting that the formation conditions of seep carbonates are variable and complex. Overall, our results show that apart from anoxic, oxic conditions are at least temporarily common in seep environments.