Prolonged core storage could result in pollen 14C ages that are too young, possibly because of growth of fungi or other microbes, but more work is needed to verify this hypothesis.
Pollen extracted from ocean and wetland sediments cored from the eastern Canadian Margin, James Bay region, and Atlantic provinces of Canada have been radiocarbon dated and results are reported here.
Pollen dates from ocean sediments were compared with marine carbonate (mollusk shells or foraminifera) dates from the same core levels, dates for which validity was assessed via correlations with other cores, and for which reworking has been excluded.
The result is a hand-operated soil corer that resembles the aluminum irrigation pipe corer that De Laune et al. Instead of aluminum pipe, we used regular steel stovepipe and a variety of tools for insertion.
After the sample is extracted from the sediment, the handle can be quickly removed for ease of transportation and storage of a core.
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In this internship you will learn about wetland formation and how carbon accumulates in wetland soils over time.