Seyler Patrick, Guyot Jean-Loup, Maurice Bourgoin Laurence, Sondag Francis, Elbaz-Poulichet F., Etcheber H., Quintanilla J. (1998). Origin of trace elements in the Bolivian Amazonian drainage basin. In :
Johnson A.I. (ed.), Fernandez-Jáuregui C.A. (ed.). Hydrology in the humid tropic environment. Wallingford : AISH, p. 47-58. (Publication - AISH ; 253). Hydrology in the Humid Tropic Environment : International Symposium, Kingston (JAM), 1996/11/17-23. ISBN 1-901502-70-8.
Titre du document
Origin of trace elements in the Bolivian Amazonian drainage basin
Année de publication
1998
Type de document
Partie d'ouvrage
Auteurs
Seyler Patrick, Guyot Jean-Loup, Maurice Bourgoin Laurence, Sondag Francis, Elbaz-Poulichet F., Etcheber H., Quintanilla J.
In
Johnson A.I. (ed.), Fernandez-Jáuregui C.A. (ed.), Hydrology in the humid tropic environment
Source
Wallingford : AISH, 1998,
p. 47-58 (Publication - AISH ; 253). ISBN 1-901502-70-8
Colloque
Hydrology in the Humid Tropic Environment : International Symposium, Kingston (JAM), 1996/11/17-23
The geochemistry of dissolved trace elements (V, Mn, Co, Ni, Cu, Zn, As, Rb, Sr, Mo, Cd, Sb, Cs, Ba, Pb and U) in the Upper Madeira basin, which constitutes the Bolivian part of the Amazon basin have been investigated. Using a statistical method (principal component analysis), the combined use of these geochemical data together with geological information on each watershed demonstrated the fundamental control of the substrate lithology on the trace chemistry of unpolluted surface waters within the catchment, at least in the Andean part of the basin. Three factors account for 87% of the variance. The first factor represents the influence of solution of evaporite and associated deposits occurring in the Andean Palaeozoic and Cretaceous sections; the second represents the influence of the mining activities being carried out in the Taquesi basin; and the third, the influence of black shale products and arenaceousargillaceous rocks. In spite of the occurrence of evaporite rocks in the Upper Madeira watershed which tend to mask the trace-metal signatures of other lithological formations, it has been possible to discriminate the sources of trace metals present in the Andean and Amazonian Plain rivers.
Plan de classement
Transports solides et qualité physico-chimique des eaux [062MECEAU04]
;
Géochimie [064GEOCHI]
Descripteurs
CHIMIE DE L'EAU ; ELEMENT EN TRACE ; MATIERE EN SOLUTION ; OLIGOELEMENT ; ELEMENT CHIMIQUE MAJEUR ; GEOCHIMIE ; ECHANTILLONNAGE ; ANALYSE STATISTIQUE ; ANALYSE EN COMPOSANTES PRINCIPALES ; LITHOLOGIE ; SUBSTRAT ; EVAPORITE ; SCHISTE ; EAU DE SURFACE ; FACTEUR ANTHROPIQUE ; MINE ; COURS D'EAU
Description Géographique
BOLIVIE ; AMAZONIE ; ANDES
Localisation
Fonds IRD [F B010070652] ;
Montpellier (Maison des Sciences de l'Eau)
Identifiant IRD
fdi:010070652
