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Radiometric dating of the United Kingdom SWAP sites

1990; Royal Society; Volume: 327; Issue: 1240 Linguagem: Inglês

10.1098/rstb.1990.0057

2054-0280

P. G. Appleby, N. Richardson, P. J. Nolan, Frank Oldfield,

Water Quality and Resources Studies

Measurements of 210 Pb by direct gamma assay have been used to date sediment cores from Surface Water Acidification Project (SWAP) study sites in the U.K. The results were checked against additional dating evidence from the artificial fallout isotopes 137 Cs and 241 Am. At one of the sites, Devoke Water in Cumbria, the 137 Cs and 241 Am data were crucial in identifying a recent sediment hiatus. At sites with recently afforested catchments the sediment record indicated substantial increases in accumulation rates.