Organic Carbon characterization from Hudson Bay sediments, determined by Rock Eval Pyrolysis

Sediment from Hudson Bay was collected with boxcores deployed from the CCGS Amundsen. The boxcores were immediately sectioned at 1 cm (top 10 cm), 2 cm (10 cm to 20 cm depth), or 5 cm (depth > 20 cm) intervals, and aliquoted for a variety of analyses. Sediment samples were then frozen (-20 Celsius) while onboard for approximately 1 month, followed by freeze-drying at the Freshwater Institute, Department of Fisheries and Oceans, Winnipeg, MB, Canada. Freeze-dried sediment was stored at room temperature in the dark. Rock Eval pyrolysis of freeze dried sediment samples was performed at the Geological Survey of Canada using a Rock Eval 6 pyrolysis.