Natural (210Pb, 7Be) and fallout (137Cs, 239,240Pu, 90Sr) radionuclides as geochemical tracers of sedimentation in Greifensee, Switzerland
1987; Elsevier BV; Volume: 63; Issue: 3-4 Linguagem: Inglês
10.1016/0009-2541(87)90162-8
ISSN1872-6836
AutoresGuojiang Wan, Peter H. Santschi, Michael Sturm, Klaus. Farrenkothen, A. Lueck, Esther Werth, Ch. Schuler,
Tópico(s)Geology and Paleoclimatology Research
ResumoThe average sedimentation rate of Greifensee has been evaluated by using varve counting and 210Pb and fallout radionuclide dating from 4 different sites in the lake, to amount to 0.14 ± 0.02 g cm−2 yr.−1. The geochronology of Greifensee agrees with previous dating attempts based on varve counting of sediments from the deepest part of the lake (Emerson and Widmer, 1978). A simple erosion model for substances derived predominantly from the drainage basin can explain the inventories of the natural and fallout radionuclides in the lake sediments.
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