The radionuclide Pb is suitable for century-scale dating and has been used to calculate the sedimentation rate in a variety of environments. However, two common ways to apply Pb dating techniques may give misleading results. This practice must be treated with caution because the Pb dating techniques do not guarantee direct dating for ages much older than years. Here, we propose that based on the principle of Pb dating, the upper limit of age suitable for direct Pb dating is between and years.
The object of our research was to investigate the peat mass accumulation mechanism, which reflects on wet and warmer periods, which stimulate the accumulation rate of peat bog production and colder, dry periods, when the peat growth is stagnant. In warm and dry periods, the peat can stop growing. This fluctuation in peat evolution reflects clearly the changes in climate especially temperature and precipitation.
Empowering women to tackle energy poverty in the Mediterranean. Global fisheries could alleviate a global food emergency in extreme situations. Wildlife conservation undermines the rights of indigenous people and local communities in India.