Article (Scientific journals)
Geochemical and Pb isotopic signature of peaty sediments from central-south Chile: Identification of particle supplies over the Holocene
De Vleeschouwer, François; Ibanez, Maud; Mattielli, Nadine et al.
2008In Journal of the Chilean Chemical Society, 53 (3), p. 1640-1649
Peer reviewed
 

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Keywords :
peat soil; trace elements; Pb isotopes; ando soils; Lake District; Chile; Holocene
Abstract :
[en] Two cores from tephra rich peat soils of the Chilean Lake District were investigated for mineral source and potential anthropogenic impact using elemental geochemistry, including rare earth elements, and lead isotopes. The dominant particle source to the area are the Trumaos which are the local ando soils derived from the weathering of volcanic deposits. In Galletue, although short term events of enhanced particle inputs occur, elemental and isotopic signatures show that the Trumaos are the only particle source to the area. In San Pablo de Tregua, punctual events of crustal particle inputs are recorded in Pb enrichment factors and isotopic profiles, reflecting a long range crustal involvement. This site also records the inception of the anthropogenic in the area in recent samples of which Pb enrichment factors and lead isotopic signatures shift drastically.
Disciplines :
Chemistry
Author, co-author :
De Vleeschouwer, François 
Ibanez, Maud
Mattielli, Nadine
Maerschalk, Claude
Fagel, Nathalie  ;  Université de Liège - ULiège > Département de géologie > Argiles, géochimie et environnements sédimentaires
Language :
English
Title :
Geochemical and Pb isotopic signature of peaty sediments from central-south Chile: Identification of particle supplies over the Holocene
Publication date :
2008
Journal title :
Journal of the Chilean Chemical Society
ISSN :
0717-9324
eISSN :
0717-9707
Publisher :
Soc Chilena Quimica
Volume :
53
Issue :
3
Pages :
1640-1649
Peer reviewed :
Peer reviewed
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
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