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	Provedor de dados Acta Amazonica (2) Autor Kronberg,Β. I. (2) Benchimol,R. E. (1) Benchimol,R. Ε. (1) Doherty,W. (1) Franco,J. R. (1) Hazenberg,G. (1) VanderVoet,A. (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 1992 (1) 1989 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última GEOCHEMISTRY AND GEOCHRONOLOGY OF SURFICIAL ACRE BASIN SEDIMENTS (WESTERN AMAZONIA): KEY INFORMATION FOR CLIMATE RECONSTRUCTION. Acta Amazonica Kronberg,Β. I.; Benchimol,R. E.. Geochemical and geochronological analyses of samples of surficial Acre Basin sediments and fossils indicate an extensive fluvial-lacustrine system, occupying this region, desiccated slowly during the last glacial cycle (LGC). This research documents direct evidence for aridity in western Amazonia during the LGC and is important in establishing boundary conditions for LGC climate models as well as in correlating marine and continental (LGC) climate conditions. Tipo: Info:eu-repo/semantics/article Ano: 1992 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671992000100051 Geochemical variations in Solimões formation sediments (Acre basin, Western Amazonia) Acta Amazonica Kronberg,Β. I.; Franco,J. R.; Benchimol,R. Ε.; Hazenberg,G.; Doherty,W.; VanderVoet,A.. SUMMARYMajor mineral, major element and minor element compositions are documented for a suite of drill core sediment samples representing a ~350m profile through the Solimões Formation sediments (Western Amazonia). Major element compositions are quantified using a chemical index of alteration (CIA) in order to asses the degree of weathering. Significant variations in CIA values throughout the profile, as well as abrupt changes between overlying, suggest that during the generation and deposition of thes sediments there were rapid changes in the ambient tectonic setting. Tipo: Info:eu-repo/semantics/article Ano: 1989 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671989000100319 Registros recuperados: 2 Primeira ... 1 ... Última

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