Pb 210 dating services percentage of people who lie online dating
Scope of application Dating of sediment is used to calculate sedimentation rate and accumulation rates for different substances.
A number of studies have focused on the accumulation of heavy metals during the past 100 years.
The naturally lead isotope 210Pb may be used to date aquatic sediments and peat bogs.
Pb against depth or cumulative weight (to allow for compacting) will be a straight line if the sedimentation rate has been constant.In addition to the mentioned rates, the dating may also give a picture of the stability of the sediments and thus tell whether the chronology of the layers is intact or whether the activity of the benthic fauna has changed the chronology by bioturbation.Local changes of current conditions may also cause changes of the chronology of the layers.This technique is more sensitive than gamma spectrometry and is suitable when a small quantity of sample is available for analysis.However the method is destructive and other radionuclides such as Pb dating can be undertaken by gamma spectrometry technique.