Table 8. Percentages of inorganic and total carbon, total nitrogen, and total sulfur in sediment samples from Hole 1080A.
Core, section,
interval (cm)
Depth
(mbsf)
IC
(wt%)
CaCO3
(wt%)
TC
(wt%)
TOC
(wt%)
TN
(wt%)
TS
(wt%)
C/N
(atomic)
175-1080A-
1H-1, 46-47 0.46 3.14 26.1 4.24 1.10 0.15 0.20 8.6
1H-2, 46-47 1.96 1.69 14.1 4.27 2.58 0.31 1.00 9.8
2H-1, 46-47 3.76 1.22 10.2 4.06 2.84 0.31 1.26 10.6
2H-3, 46-47 6.76 1.15 9.6 4.76 3.61 0.37 1.28 11.5
2H-5, 46-47 9.76 0.76 6.4 2.45 1.69 0.19 1.09 10.5
3H-1, 46-47 13.26 0.20 1.6 3.28 3.08 0.29 2.27 12.4
3H-3, 46-47 16.36 0.27 2.2 2.61 2.34 0.24 1.93 11.6
3H-5, 46-47 19.46 0.74 6.2 2.57 1.83 0.20 0.83 10.9
4H-2, 45-47 23.09 0.25 2.1 2.56 2.31 0.22 1.19 12.1
4H-3, 46-47 24.60 0.20 1.7 3.19 2.99 0.26 1.96 13.3
4H-7, 50-51 27.91 0.84 7.0 2.93 2.09 0.22 1.28 11.3
5H-1, 46-47 32.26 0.34 2.8 2.24 1.90 0.22 1.84 10.2
5H-3, 46-47 34.48 0.29 2.4 2.79 2.49 0.26 1.40 11.4
5H-5, 46-47 36.56 0.80 6.6 2.22 1.43 0.20 1.16 8.4
5H-9, 46-47 41.36 0.18 1.5 2.51 2.32 0.25 1.77 10.9
6H-3, 42-43 43.56 0.21 1.8 4.07 3.86 0.32 1.54 14.2

Notes: IC = inorganic carbon; CaCO3 = calcium carbonate; TC = total carbon; TOC = total organic carbon; TN = total nitrogen; TS = total sulfur; and C/N = carbon/nitrogen ratio. TOC concentrations are calculated from the difference between IC and TC concentrations. C/N ratios are calculated from TOC and TN concentrations and are given as atom/atom ratios.