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AGE
3
Age, 14C AMS
3
CHN elemental analyzer Flash 2000 Model
3
Calcium carbonate
3
Calculated by multiplying the biogenic silica concentration by 2.4 analyzed using the wet alkaline extraction method DeMaster, 1981
Calculated by multiplying the total inorganic carbon content measured UIC CO2 Coulometer CM5014 Model by 8.333
3
Calculated by subtracting total inorganic carbon from total carbon
3
Carbon, organic, total
3
Carbon/Nitrogen ratio
3
Continental Margin
3
DEPTH, sediment/rock
3
Gravity corer
3
Ice Sheet
3
Nitrogen, total
3
Opal, biogenic silica
3
PNRA_XXIX
Ross Sea
Sea ice
3
Sediment core
3
Thermo Fisher Scientific FLASH 2000 isotope ratio mass spectrometer elemental analyzer
3
Total organic carbon divided by total nitrogen
3
paleoproductivity
3
δ13C
3
δ15N
3
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