2024-03-28T22:55:07Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1710802018-10-17T07:21:21Zcom_10261_88com_10261_8col_10261_341
Camarero, Lluís
Masqué, Pere
Devos, W.
Ani-Ragolta, I.
Catalán, Jordi
Moor, H. C.
Pla Rabès, Sergi
Sanchez-Cabeza, Joan-Albert
2018-10-16T09:44:02Z
2018-10-16T09:44:02Z
1998
Water, Air, and Soil Pollution 105 : 439-449 (1998)
0049-6979
http://hdl.handle.net/10261/171080
1573-2932
Variations in Pb concentration in lake sediments reflect changes in the fluxes of this element in the past. A sediment core from a lake in the Pyrenees (Lake Redó at 2,240 m a.s.l., NE Spain) was studied, with the aim of reconstructing past environmental and climatic conditions in the lake and its catchment area. The core was dated using both 210Pb and 14C. A surface peak of Pb concentration, which was about 10 times higher than the background level, was found. This peak is attributed to mining activities since the beginning of this century. Although Pb pollution due to the combustion of gasoline is expected to be present, no evidence can be deduced from Pb isotope ratios of sediment due to the masking effect of Pb from mines. A second peak appeared in a deeper layer, with a maximum Pb concentration of about 17 times higher than the background level. The origin of this peak is unclear. All evidence suggests that the ancient peak is due to mining operations in the central Pyrenees area, which were not documented historically.
eng
closedAccess
Lake Redó
Lake sediments
Lead
Metal pollution
Mining
210Pb-dating
Pyrenees
Stable Pb isotopes
Historical variations in lead fluxes in the Pyrenees (NE Spain) from a dated lake sediment core
artículo