Pb 210 dating sediments gridview fired event rowupdating which wasn t handled
In the water phase 210Pb is adsorbed to particulate matter and together they are deposited in the sediment. The remaining amount of 210Pb at a certain depth will reveal the age of the given sediment layer.
At both these sites the Pb-210 profiles were strongly disturbed in the upper zone of the sediment cores, whereas the Cs-137 pattern remained intact.
Subsequently, they are cut into slices of approximately 1 cm and dried, whereupon the content of dry matter and possibly the loss on ignition are determined.
The result of the dating is delivered in the form of a report stating the age of the sediment, the rate of sedimentation, the mixing depth and the mixing intensity.
The naturally lead isotope 210Pb may be used to date aquatic sediments and peat bogs.
The method is suitable for dating approximately 100 years back.