Physics
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991gecoa..55.1963b&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 55, Issue 7, pp.1963-1975
Physics
4
Scientific paper
210 Pb, 210 Po, and ancillary geochemical parameters were measured in the sediments and pore waters of a lake with seasonally anoxic bottom waters. Substantial release of radionuclides to the water column has been documented at this site. Solid phase 210 Pb profiles do not match the expected input history, suggesting that the radionuclide may be undergoing redistribution. High levels of the radionuclides were measured in pore waters, consistent with partition coefficients in the range from 10 3 to 10 4 . The high pore water activities, apparent redistribution pattern, and the documented release of 210 Pb from these sediments to the water column, all point to the possible importance of pore water diffusion as a 210 Pb transport mechanism. The distribution of 210 Pb in these sediments was successfully modeled using a combination of sediment burial and pore water diffusion without the need to invoke particle reworking. Theoretical analysis supports the idea that in some cases large dating errors can result if diffusive redistribution of 210 Pb is neglected.
Benoit Gaboury
Hemond Harold F.
No associations
LandOfFree
Evidence for diffusive redistribution of 210 Pb in lake sediments does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Evidence for diffusive redistribution of 210 Pb in lake sediments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for diffusive redistribution of 210 Pb in lake sediments will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-862237