Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/3799
Title: Denudation rates of the Quadrilátero Ferrífero (Minas Gerais, Brazil) : preliminary results from measurements of solute fluxes in rivers and in situ-produced cosmogenic 10Be.
Authors: Salgado, André Augusto Rodrigues
Braucher, Régis
Colin, Fabrice
Nalini Júnior, Hermínio Arias
Varajão, Angélica Fortes Drummond Chicarino
Varajão, César Augusto Chicarino
Keywords: Weathering
Denudation
Cosmogenic nuclides
Quadrilátero Ferrífero
Issue Date: 2006
Citation: SALGADO, A. A. R. et al. Denudation rates of the Quadrilátero Ferrífero (Minas Gerais, Brazil) : preliminary results from measurements of solute fluxes in rivers and in situ-produced cosmogenic 10Be. Journal of Geochemical Exploration, v. 88, p. 313-317, 2006. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0375674205001597>. Acesso em: 24 de set. 2014.
Abstract: This paper investigates the denudation rates in the Quadrila´tero Ferrı´fero, Minas Gerais State (Brazil). The aim is to compare chemical weathering rates from measurements of solute fluxes in rivers and long-term mean erosion rates deduced from in situproduced cosmogenic 10Be concentrations measured in fluvial sediments. Both water samples and sediments were collected in fifteen stations (checkpoints) located in four hydrographic basins with low anthropogenic perturbations. Depending of the type of substratum, three degrees of chemical denudation rates from water samples are observed: (i) high rates in marbles; (ii) medium rates in schists, phyllites, granites, gneisses and migmatites; (iii) low rates in quartzites and itabirites. Preliminary results of long-term erosion rates deduced from in situ-produced 10Be are comparable with those of chemical rates.
URI: http://www.repositorio.ufop.br/handle/123456789/3799
metadata.dc.identifier.doi: https://doi.org/10.1016/j.gexplo.2005.08.064
ISSN: 0375-6742
metadata.dc.rights.license: O periódico Journal of Geochemical Exploration concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3474340713171.
Appears in Collections:DEGEO - Artigos de periódicos

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