Table T11. Source rock and elemental analysis data for 10 decarbonated sediment samples, Hole U1351A. (See table notes.)
|
Core, section,
interval (cm) |
Depth
CSF-A (m) |
IC
(wt%) |
TC
(wt%) |
TN
(wt%) |
TS
(wt%) |
TOCDIFF
(wt%) |
TOCSRA
(wt%) |
S1
(mg HC/g rock) |
S2
(mg HC/g rock) |
S3
(mg CO2/g rock) |
Tmax
(°C) |
Hydrogen index
(mg S2/g TOC) |
Oxygen index
(mg S3/g TOC) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 317-U1351A- | |||||||||||||
| Original data | |||||||||||||
| 1H-1, 11 | 0.11 | 3.51 | 4.22 | 0.53 | 0.04 | 0.71 | 1.31 | 0.27 | 1.13 | 1.25 | 429.7 | 86.3 | 95.4 |
| 1H-1, 25 | 0.25 | 3.32 | 4.06 | 0.61 | 0.06 | 0.74 | 1.37 | 0.22 | 1.01 | 1.16 | 422.0 | 73.7 | 84.7 |
| 1H-2, 43 | 1.92 | 1.68 | 2.49 | 0.54 | 0.26 | 0.81 | 1.35 | 0.22 | 1.05 | 1.19 | 422.5 | 77.8 | 88.1 |
| 2H-3, 98 | 6.68 | 0.29 | 0.67 | 0.52 | 0.37 | 0.38 | 0.83 | 0.05 | 0.20 | 0.23 | 416.4 | 24.1 | 27.7 |
| 2H-4, 50 | 7.70 | 1.70 | 0.99 | 0.53 | 0.48 | –0.71 | 1.07 | 0.05 | 0.21 | 0.29 | 419.4 | 19.6 | 27.1 |
| 3H-2, 77 | 14.47 | 1.77 | 2.32 | 0.48 | 0.23 | 0.55 | 1.05 | 0.10 | 0.52 | 0.71 | 421.1 | 49.5 | 67.6 |
| 4H-2, 127 | 20.97 | 0.95 | 1.23 | 0.43 | 0.17 | 0.28 | 1.00 | 0.04 | 0.15 | 0.25 | 401.6 | 15.0 | 25.0 |
| 4H-3, 76 | 21.96 | 3.54 | 3.95 | 0.60 | 0.26 | 0.41 | 1.42 | 0.10 | 0.57 | 0.94 | 423.1 | 40.1 | 66.2 |
| 5H-2, 34 | 26.94 | 3.70 | 3.81 | 0.61 | 0.08 | 0.11 | 1.01 | 0.07 | 0.35 | 0.69 | 413.7 | 34.7 | 68.3 |
| 5H-2, 54 | 27.14 | 3.76 | 4.04 | 0.56 | 0.06 | 0.28 | 0.98 | 0.06 | 0.36 | 0.69 | 425.7 | 36.7 | 70.4 |
| Decarbonated data | Difference | ||||||||||||
| 1H-1, 11 | 0.11 | — | 0.88 | 0.35 | 0.42 | –0.17 | 0.94 | 0.42 | 1.32 | 0.70 | 417.5 | 140.4 | 74.5 |
| 1H-1, 25 | 0.25 | — | 0.95 | 0.38 | 0.40 | –0.21 | 1.03 | 0.40 | 1.27 | 0.76 | 421.2 | 123.3 | 73.8 |
| 1H-2, 43 | 1.92 | — | 0.77 | 0.32 | 0.69 | 0.04 | 1.00 | 0.37 | 1.07 | 0.36 | 415.0 | 107.0 | 36.0 |
| 2H-3, 98 | 6.68 | — | 0.31 | 0.39 | 0.53 | 0.07 | 0.68 | 0.12 | 0.22 | 0.05 | 405.3 | 32.4 | 7.4 |
| 2H-4, 50 | 7.70 | — | 0.30 | 0.34 | 0.73 | –1.01 | 0.44 | 0.11 | 0.21 | 0.05 | 402.4 | 47.7 | 11.4 |
| 3H-2, 77 | 14.47 | — | 0.53 | 0.33 | 0.69 | 0.02 | 0.75 | 0.26 | 0.61 | 0.18 | 416.7 | 81.3 | 24.0 |
| 4H-2, 127 | 20.97 | — | 0.18 | 0.00 | 0.50 | 0.10 | 0.32 | 0.11 | 0.16 | 0.04 | 416.7 | 50.0 | 12.5 |
| 4H-3, 76 | 21.96 | — | 0.62 | 0.35 | 1.05 | –0.21 | 0.93 | 0.33 | 0.73 | 0.21 | 411.2 | 78.5 | 22.6 |
| 5H-2, 34 | 26.94 | — | 0.29 | 0.30 | 0.55 | –0.18 | 0.61 | 0.11 | 0.26 | 0.13 | 414.7 | 42.6 | 21.3 |
| 5H-2, 54 | 27.14 | — | 0.36 | 0.35 | 0.56 | –0.08 | 0.69 | 0.20 | 0.43 | 0.12 | 414.7 | 62.3 | 17.4 |
Notes: Inorganic carbon (IC) from coulometric measurement of acid-evolved CO2. Total carbon (TC), total nitrogen (TN), and total sulfur (TS) from elemental analysis of sediments. TOCDIFF = total organic carbon from difference between TC and IC. TOCSRA = total organic carbon from source rock analyzer pyrolysis (see Table T18 in the "Site U1351" chapter). Tmax = pyrolysis temperature at which the evolution rate of S2 is at a maximum. Difference is between TOCDIFF (original data) and TOCdecarbonated TC (decarbonated data).
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