994 resultados para Watson, William D., Track--Men--U-M
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Digital Image
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Digital Image
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Resumen basado en el de la publicación
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Ages of zircon from sedimentary samples of Rio Parana Formation, belonging of Bauru Group, north of Parana Basin, Brazil, has been determined by zircon Fission Track and U-Th-Pb in situ dating methods. The obtained ages are from same zircon grain that provided information on the source areas for the sediments and the morphotectonic events.
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Zircon samples from the Cenozoic São Paulo and Taubaté Basins and Mantiqueira Mountain Range (southeast Brazil) were concomitantly dated by zircon Fission Track Method (FTM) and in situ U-Pb dating method. While FTM detrital-zircon data are ideally used to provide low-temperature information, U-Pb single detrital grain ages record the time of zircon formation in igneous or high grade metamorphic environments. This methodology may be used to study the possible sources of the basins sediments. The results suggest that the São Paulo Basin is composed of sediments from just one source, the Mantiqueira Mountain Range. On the other hand, the Taubaté Basin presents further sediment sources besides the Mantiqueira Mountain Range. © 2012 Elsevier Ltd. All rights reserved.
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[Benjamin Gottlob Gerlach]
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von S[igismund] Stern
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von Bruno Lauff. Aus dem Institut für Nahrungsmittelkunde der Tierärztlichen Hochschule in Berlin
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bey Christoph Peter Francken