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A record of anthropogenic Pb deposition in a Mediterranean karst catchment (Lake Vrana, Cres Island, Croatia)

Published online by Cambridge University Press:  05 July 2018

S. Miko ,
S. Mesić ,
M. Šparica Miko  and
O. Hasan
S. Miko*
Affiliation:
Croatian Geological Survey, Sachsova 2, HR-10000, Zagreb, Croatia
S. Mesić
Affiliation:
Croatian Geological Survey, Sachsova 2, HR-10000, Zagreb, Croatia
M. Šparica Miko
Affiliation:
Croatian Geological Survey, Sachsova 2, HR-10000, Zagreb, Croatia
O. Hasan
Affiliation:
Croatian Geological Survey, Sachsova 2, HR-10000, Zagreb, Croatia
*
*E-mail: slobodan.miko@hgi-cgs.hr
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Abstract

To trace the historyof anthropogenic, atmospheric Pb pollution, analyses of soils from the region and of cores from the karst Lake Vrana (Croat: Vransko jezero) on the island of Cres were performed. The area affected byPb pollution in Croatia covers most of the high-mountain karst region. Since lake sediments can act as archives of atmospheric deposition of metals (and other pollutants) a multi-element analysis as well as Pb isotopes of dated sediment core samples and palaeosoil from the catchment enabled the evaluation of Pb-pollution history. The Pb/Sc ratios and the 206Pb/207Pb ratios allowed the calculation of enrichment factors and the anthropogenic contributions of Pb during the past 4000 y. The sediments of Lake Vrana were found to be a consistent record of Pb pollution in this part of the Mediterranean region, despite the fact that the catchment lost most of its soil cover between 1404 and 1650 AD due to deforestation which caused a major change in sediment composition.

Type
Research Article
Information
Mineralogical Magazine , Volume 72 , Issue 1 , February 2008 , pp. 455 - 460
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2008

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