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Geochemical And Pb Isotopic Signature Ofpeaty Sediments From Central-South Chile : Identification Of Particle Supplies Over The Holocene

De Vleeschouwer, François and Ibanez, Maud and Mattielli, Nadine and Maerschalk, Claude and Fagel, Nathalie Geochemical And Pb Isotopic Signature Ofpeaty Sediments From Central-South Chile : Identification Of Particle Supplies Over The Holocene. (2008) Journal of the Chilean Chemical Society, 53 (3). 1640-1649. ISSN 0717-9707

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Official URL: http://dx.doi.org/10.4067/S0717-97072008000300021

Abstract

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 Galletué, although short term events of enhanced particle inputs occur, elemental and isotopic signatures show that the Trumaos are the only particle source to the área. 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 área in recent samples of which Pb enrichment factors and lead isotopic signatures shift drastically.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Thermochimica Acta website : http://www.sciencedirect.com/science/journal/00406031
HAL Id:hal-00985129
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Université de Liège (BELGIUM)
Other partners > Université Libre de Bruxelles - ULB (BELGIUM)
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Deposited By: François De Vleeschouwer
Deposited On:29 Apr 2014 09:50

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