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(Article of periodic en Anglais - 2013)

Document title

Geochemistry of Quaternary sediments in terraces of the Tinto River (SW Spain) : paleoenvironmental implications

Authors(s) and Affiliation(s)

CÁCERES L.M. (1) ; OLÍAS M. (1) ; DE ANDRÉS J.R. (2) ; RODRÍGUEZ-VIDAL J. (1) ; CLEMENTE L. (3) ; GALVÁN L. (1) ; MEDINA B. (1) ;
(1) Dep. de Geodinámica y Paleontología, Fac de Ciencias Experimentales, Univ., Huelva, ESPAGNE
(2) Inst. Geológico y Minero de España, Univ. of Granada, Madrid, ESPAGNE
(3) Inst. de Recursos Naturales y Agrobiología (CSIC), Sevilla, ESPAGNE

Abstract

The AA. studied the evolution of the levels of toxic elements during part of the Quaternary from the analysis of fluvial deposits that, forming terraces, were originated by the dynamics of the Tinto River. Using a detailed geomorphological cartography, up to 9 terrace levels were differentiated in the lower sector of the basin, whose ages range from the Pleistocene to the Holocene. Sampling and geochemical analyses (major elements and trace) were carried out in 6 of these levels, in addition to sediments of the current flood plain. There aren't geochemical tendencies in deposits from middle Pleistocene to Holocene. The current sediments show a sharp increase in the levels of As, Cu, Pb and Zn. The amounts of toxic elements released by natural processes should be very small. The high levels of toxic elements are generated by mining contamination.

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2013, vol. 101 [pp. 1-10]

Bibliographic references : 1 p.

Collation : 7 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.09.011

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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