Hole, core, section,
interval (cm) |
Depth
(mbsf) |
TC
(wt%) |
IC
(wt%) |
CaCO3
(wt%) |
TOC
(wt%) |
N
(wt%) |
C/N
(atomic) |
---|---|---|---|---|---|---|---|
207- |
|
|
|
|
|
|
|
Unit I (nannofossil clay): |
|
|
|
|
|
||
1260A-1R-1, 15–16 | 0.15 | 1.32 | 1.24 | 10.3 | 0.08 | 0.04 | 2.4 |
Unit II (nannofossil chalk): |
|
|
|
|
|
||
1260A-2R-1, 68–69 | 1.68 |
|
5.21 | 43.4 |
|
|
|
1260A-2R-2, 9–10 | 2.59 | 7.45 | 7.50 | 62.5 | 0.00 | 0.01 | 0.0 |
1260A-2R-2, 113–114 | 3.63 |
|
9.26 | 77.1 |
|
|
|
1260A-3R-1, 11–12 | 10.41 |
|
9.06 | 75.5 |
|
|
|
1260A-3R-2, 10–11 | 11.90 | 8.64 | 8.73 | 72.7 | 0.00 | 0.02 | 0.0 |
1260A-3R-3, 92–93 | 14.22 |
|
7.79 | 64.9 |
|
|
|
1260A-4R-3, 73–74 | 23.23 |
|
8.57 | 71.4 |
|
|
|
1260A-4R-5, 73–74 | 26.23 | 8.67 | 8.44 | 70.3 | 0.23 | 0.02 | 12.7 |
1260A-6R-1, 62–63 | 38.82 |
|
9.24 | 77.0 |
|
|
|
1260A-6R-3, 137–138 | 42.57 | 7.07 | 7.01 | 58.4 | 0.06 | 0.01 | 6.2 |
1260A-6R-6, 23–24 | 45.43 |
|
8.66 | 72.1 |
|
|
|
1260A-7R-2, 16–17 | 49.16 |
|
9.35 | 77.9 |
|
|
|
1260A-7R-4, 20–21 | 52.20 | 9.91 | 9.87 | 82.2 | 0.04 | 0.01 | 4.4 |
1260A-8R-1, 49–50 | 57.69 |
|
9.82 | 81.8 |
|
|
|
1260A-8R-6, 26–27 | 64.96 | 8.73 | 8.60 | 71.6 | 0.13 | 0.01 | 10.9 |
1260A-9R-1, 82–83 | 67.72 |
|
9.95 | 82.9 |
|
|
|
1260A-9R-3, 89–90 | 70.79 |
|
9.30 | 77.5 |
|
|
|
1260A-9R-5, 86–87 | 73.76 | 9.16 | 8.93 | 74.4 | 0.23 | 0.02 | 14.5 |
1260A-9R-7, 66–67 | 76.56 |
|
8.85 | 73.8 |
|
|
|
1260A-10R-1, 83–84 | 77.43 |
|
8.39 | 69.9 |
|
|
|
1260A-10R-3, 48–49 | 80.08 |
|
9.00 | 75.0 |
|
|
|
1260A-10R-5, 72–73 | 83.32 | 9.07 | 8.98 | 74.8 | 0.09 | 0.01 | 9.3 |
1260A-11R-2, 80–81 | 88.60 |
|
9.93 | 82.7 |
|
|
|
1260A-11R-4, 78–79 | 91.58 |
|
9.43 | 78.6 |
|
|
|
1260A-11R-6, 84–85 | 94.64 | 9.06 | 9.02 | 75.1 | 0.04 | 0.01 | 5.4 |
1260A-12R-1, 62–63 | 96.52 |
|
8.69 | 72.4 |
|
|
|
1260A-12R-3, 99–100 | 99.89 |
|
7.90 | 65.8 |
|
|
|
1260A-12R-5, 60–61 | 102.50 | 8.45 | 8.47 | 70.6 | 0.00 | 0.01 | 0.0 |
1260A-13R-2, 64–64 | 107.74 |
|
8.19 | 68.2 |
|
|
|
1260A-13R-4, 64–64 | 110.74 |
|
8.68 | 72.3 |
|
|
|
1260A-13R-6, 64–64 | 113.74 | 8.75 | 8.69 | 72.4 | 0.06 | 0.01 | 5.2 |
1260A-14R-2, 75–76 | 117.55 |
|
8.54 | 71.1 |
|
|
|
1260A-14R-4, 73–74 | 120.53 |
|
8.77 | 73.1 |
|
|
|
1260A-14R-6, 75–76 | 123.55 | 8.44 | 8.37 | 69.8 | 0.07 | 0.01 | 12.5 |
1260A-15R-1, 70–71 | 125.60 |
|
9.14 | 76.2 |
|
|
|
1260A-15R-3, 69–70 | 128.59 | 8.92 | 8.82 | 73.5 | 0.10 | 0.01 | 14.0 |
1260A-16R-1, 42–43 | 134.92 | 9.49 | 9.45 | 78.7 | 0.04 | 0.01 | 3.5 |
1260A-17R-2, 69–70 | 146.39 | 9.51 | 9.56 | 79.6 | 0.00 | 0.00 | 0.0 |
1260A-18R-1, 69–70 | 154.19 |
|
8.81 | 73.4 |
|
|
|
1260A-18R-5, 70–71 | 160.20 | 9.16 | 9.14 | 76.1 | 0.02 | 0.01 | 2.1 |
1260A-19R-1, 70–71 | 163.90 |
|
8.27 | 68.9 |
|
|
|
1260A-19R-5, 70–71 | 169.90 | 8.23 | 8.45 | 70.4 | 0.00 | 0.02 | 0.0 |
1260A-20R-2, 76–77 | 175.06 |
|
8.63 | 71.9 |
|
|
|
1260A-20R-5, 77–78 | 179.57 | 8.49 | 8.50 | 70.8 | 0.00 | 0.02 | 0.0 |
1260A-21R-1, 7–8 | 182.57 | 7.53 | 7.54 | 62.8 | 0.00 | 0.02 | 0.0 |
1260A-23R-1, 92–93 | 202.32 |
|
7.62 | 63.5 |
|
|
|
1260A-23R-3, 69–71 | 205.09 | 8.23 | 8.09 | 67.4 | 0.14 | 0.03 | 5.7 |
1260A-24R-1, 110–111 | 212.20 |
|
7.66 | 63.9 |
|
|
|
1260A-24R-3, 63–64 | 214.53 |
|
6.16 | 51.3 |
|
|
|
1260A-24R-5, 88–89 | 217.67 | 7.83 | 7.74 | 64.5 | 0.09 | 0.23 | 0.4 |
1260A-25R-1, 127–128 | 221.97 |
|
8.18 | 68.2 |
|
|
|
1260A-25R-4, 1–2 | 225.21 |
|
5.79 | 48.2 |
|
|
|
1260A-25R-6, 71–72 | 228.71 | 7.33 | 7.34 | 61.2 | 0.00 | 0.03 | 0.0 |
1260A-26R-1, 120–121 | 231.50 |
|
6.35 | 52.9 |
|
|
|
1260A-26R-5, 19–20 | 236.49 | 6.65 | 6.59 | 54.9 | 0.06 | 0.03 | 2.7 |
1260A-26R-7, 59–60 | 239.39 |
|
6.72 | 56.0 |
|
|
|
1260A-27R-1, 75–76 | 240.75 |
|
7.15 | 59.5 |
|
|
|
1260A-27R-3, 74–75 | 243.74 |
|
7.54 | 62.8 |
|
|
|
1260A-27R-5, 71–72 | 246.71 |
|
7.08 | 59.0 |
|
|
|
1260A-27R-7, 19–20 | 248.89 | 7.50 | 7.41 | 61.7 | 0.09 | 0.03 | 3.8 |
1260A-28R-2, 75–76 | 251.66 |
|
6.04 | 50.3 |
|
|
|
1260A-28R-4, 75–76 | 254.62 |
|
7.48 | 62.3 |
|
|
|
1260A-28R-6, 75–75 | 256.93 | 7.28 | 7.17 | 59.7 | 0.11 | 0.03 | 4.2 |
1260A-28R-8, 50–51 | 259.14 |
|
7.19 | 59.9 |
|
|
|
1260A-29R-2, 69–70 | 260.88 |
|
7.23 | 60.2 |
|
|
|
1260A-29R-4, 75–76 | 263.84 |
|
6.59 | 54.9 |
|
|
|
1260A-29R-6, 14–15 | 265.64 | 6.60 | 6.43 | 53.6 | 0.17 | 0.03 | 7.2 |
1260A-30R-1, 67–68 | 269.57 |
|
7.59 | 63.2 |
|
|
|
1260A-30R-3, 67–68 | 272.49 |
|
5.84 | 48.7 |
|
|
|
1260A-30R-5, 59–60 | 275.02 | 6.80 | 6.74 | 56.1 | 0.06 | 0.00 | 15.6 |
Unit III (foraminifer to clayey nannofossil chalk): |
|
|
|
|
|||
1260A-30R-8, 72–73 | 278.22 |
|
4.92 | 41.0 |
|
|
|
1260B-17R-7, 69–69.1 | 279.84 | 0.18 | 0.10 | 0.9 | 0.08 | 0.03 | 2.9 |
1260A-31R-2, 49–50 | 280.28 |
|
6.48 | 54.0 |
|
|
|
1260A-31R-4, 64–65 | 283.22 | 6.59 | 6.57 | 54.7 | 0.02 | 0.05 | 0.5 |
1260A-31R-6, 66–67 | 286.24 |
|
6.51 | 54.2 |
|
|
|
1260A-32R-1, 68–69 | 288.88 |
|
5.01 | 41.7 |
|
|
|
1260B-19R-1, 138–139 | 291.48 | 0.00 | 6.56 | 54.7 |
|
|
|
1260A-32R-3, 29–30 | 291.49 | 6.52 | 6.35 | 52.9 | 0.17 |
|
|
1260B-19R-3, 52–53 | 293.62 | 7.14 | 6.98 | 58.2 | 0.16 | 0.02 | 8.4 |
1260B-20R-1, 29–30 | 300.09 | 0.00 | 3.21 | 26.7 |
|
|
|
1260B-20R-1, 135–136 | 301.15 | 0.00 | 4.52 | 37.6 |
|
|
|
1260B-20R-3, 59–60 | 303.39 | 6.21 | 6.03 | 50.3 | 0.18 | 0.27 | 0.8 |
1260B-20R-6, 66–67 | 307.94 | 0.00 | 6.42 | 53.5 |
|
|
|
1260B-21R-2, 94–95 | 311.84 | 0.00 | 5.33 | 44.4 |
|
|
|
1260B-21R-4, 13–14 | 314.05 | 6.11 | 5.91 | 49.3 | 0.20 | 0.03 | 7.4 |
1260A-35R-1, 78–79 | 317.88 |
|
5.38 | 44.8 |
|
|
|
1260B-21R-7, 1–2 | 318.45 | 0.00 | 6.72 | 56.0 |
|
|
|
1260A-35R-3, 86–87 | 320.96 | 6.46 | 6.56 | 54.6 | 0.00 | 0.01 |
|
1260B-22R-4, 2–3 | 323.62 | 9.42 | 9.28 | 77.3 | 0.14 | 0.01 | 11.3 |
1260A-35R-5, 116–117 | 324.26 |
|
10.30 | 85.8 |
|
|
|
1260A-35R-7, 30–31 | 326.40 |
|
9.09 | 75.7 |
|
|
|
1260B-23R-1, 110–111 | 329.80 | 0.00 | 6.77 | 56.4 |
|
|
|
1260B-23R-6, 63–64 | 336.63 | 8.95 | 8.83 | 73.6 | 0.12 | 0.01 | 13.4 |
1260B-24R-3, 116–117 | 342.56 | 9.26 | 9.12 | 75.9 | 0.14 | 0.01 | 13.6 |
1260A-37R-5, 90–91 | 343.30 | 9.32 | 9.38 | 78.1 | 0.00 | 0.00 |
|
1260A-37R-5, 109–110 | 343.49 |
|
6.75 | 56.2 |
|
|
|
1260A-38R-1, 114–115 | 347.14 |
|
9.47 | 78.9 |
|
|
|
1260A-38R-4, 70–71 | 351.20 | 6.10 | 6.05 | 50.4 | 0.05 | 0.01 | 4.8 |
1260A-38R-6, 10–11 | 353.60 |
|
6.29 | 52.4 |
|
|
|
1260A-39R-1, 2–3 | 355.62 |
|
6.11 | 50.9 |
|
|
|
1260A-39R-3, 73–74 | 359.33 | 5.72 | 5.51 | 45.9 | 0.21 | 0.01 | 17.7 |
1260A-39R-5, 115–116 | 362.75 |
|
5.44 | 45.3 |
|
|
|
1260A-39R-6, 88–89 | 363.98 |
|
6.89 | 57.4 |
|
|
|
1260B-27R-1, 8–9 | 367.38 | 0.00 | 7.36 | 61.3 |
|
|
|
1260A-40R-3, 40–41 | 368.70 | 9.30 | 9.27 | 77.2 | 0.03 | 0.00 | 8.9 |
1260A-40R-4, 0–5 | 369.80 | 6.16 | 6.18 | 51.5 | 0.00 | 0.01 |
|
1260B-27R-5, 107–108 | 374.37 | 7.40 | 7.27 | 60.5 | 0.13 | 0.02 | 9.0 |
1260A-41R-1, 67–68 | 375.57 | 8.39 | 8.37 | 69.7 | 0.02 | 0.01 | 3.5 |
1260B-28R-1, 72–72 | 377.62 | 5.49 | 5.31 | 44.3 | 0.18 | 0.02 | 9.9 |
1260B-28R-1, 149–150 | 378.39 | 5.50 | 5.34 | 44.5 | 0.16 | 0.03 | 6.7 |
1260A-41R-4, 0–5 | 379.40 | 3.95 | 3.94 | 32.8 | 0.01 | 0.01 | 1.3 |
1260B-29R-2, 0–1 | 383.00 | 3.91 | 3.71 | 30.9 | 0.20 | 0.05 | 5.1 |
1260B-29R-2, 0–1 | 383.00 | 4.04 | 3.71 | 30.9 | 0.33 | 0.04 | 9.4 |
1260B-29R-2, 49–50 | 383.49 | 0.00 | 3.60 | 30.0 |
|
|
|
1260B-29R-3, 59–60 | 385.09 | 4.60 | 4.21 | 35.0 | 0.39 | 0.04 | 11.8 |
1260A-42R-1, 73–74 | 385.23 |
|
3.94 | 32.9 |
|
|
|
1260A-42R-2, 0–5 | 386.00 | 3.50 | 3.43 | 28.5 | 0.07 | 0.00 |
|
1260B-30R-1, 72–73 | 387.22 | 3.35 | 3.17 | 26.4 | 0.18 | 0.02 | 11.9 |
1260A-42R-2, 127–128 | 387.27 |
|
4.18 | 34.8 |
|
|
|
1260B-30R-1, 145–150 | 387.95 | 4.06 | 3.93 | 32.7 | 0.13 | 0.02 | 6.2 |
1260A-42R-4, 55–56 | 389.55 | 5.39 | 5.15 | 42.9 | 0.24 | 0.02 | 15.1 |
Unit IV (laminated black shale): |
|
|
|
|
|
||
1260B-31R-1, 145–150 | 392.55 | 14.47 | 6.48 | 53.9 | 7.99 | 0.30 | 31.0 |
1260A-43R-1, 62–63 | 394.72 | 9.02 | 3.20 | 26.7 | 5.82 | 0.20 | 34.5 |
1260A-43R-2, 0–5 | 395.38 | 19.94 | 6.02 | 50.1 | 13.92 | 0.43 | 37.7 |
1260A-43R-2, 95–96 | 396.33 | 15.57 | 6.36 | 53.0 | 9.21 | 0.29 | 37.5 |
1260B-32R-2, 90–93 | 398.44 | 13.79 | 7.23 | 60.2 | 6.56 | 0.24 | 31.5 |
1260B-33R-1, 145–150 | 402.15 | 16.99 | 5.50 | 45.8 | 11.49 | 0.40 | 33.9 |
1260B-33R-2, 56–57 | 402.76 | 14.98 | 5.00 | 41.7 | 9.98 | 0.37 | 31.4 |
1260A-44R-2, 0–5 | 405.20 | 11.77 | 5.49 | 45.7 | 6.28 | 0.22 | 34.1 |
1260A-44R-3, 32–33 | 407.02 | 15.16 | 4.50 | 37.5 | 10.66 | 0.40 | 30.9 |
1260A-44R-4, 88–89 | 408.38 | 13.86 | 5.63 | 46.9 | 8.23 | 0.30 | 31.5 |
1260B-34R-3, 0–5 | 408.70 | 15.13 | 2.26 | 18.9 | 12.87 | 0.53 | 28.2 |
1260A-45R-1, 107–108 | 409.77 | 12.74 | 10.94 | 91.2 | 1.80 | 0.05 | 42.3 |
1260A-45R-1, 148–150 | 410.18 | 10.18 | 5.75 | 47.9 | 4.43 | 0.16 | 33.1 |
1260A-45R-2, 10–11 | 410.30 | 12.42 | 4.80 | 40.0 | 7.62 | 0.30 | 30.1 |
1260B-34R-5, 25–26 | 411.95 | 11.53 | 1.28 | 10.7 | 10.25 | 0.39 | 30.5 |
1260A-46R-1, 38–39 | 414.68 | 14.82 | 3.58 | 29.8 | 11.24 | 0.43 | 30.6 |
1260A-46R-3, 118–119 | 418.12 | 13.35 | 0.46 | 3.8 | 12.89 | 0.52 | 28.9 |
1260A-46R-4, 0–5 | 418.28 | 13.77 | 0.78 | 6.5 | 12.99 | 0.54 | 28.2 |
1260B-35R-3, 0–5 | 418.30 | 11.97 | 9.00 | 75.0 | 2.97 | 0.16 | 21.4 |
1260A-46R-4, 66–67 | 418.94 | 14.75 | 2.29 | 19.1 | 12.46 | 0.50 | 29.3 |
1260B-35R-5, 16–16 | 421.41 | 14.40 | 1.25 | 10.4 | 13.15 | 0.41 | 37.3 |
1260A-46R-6, 43–44 | 421.50 | 14.35 | 3.36 | 28.0 | 10.99 | 0.42 | 30.2 |
1260B-36R-1, 61–62 | 425.51 | 15.75 | 7.53 | 62.7 | 8.22 | 0.31 | 31.0 |
1260B-36R-3, 0–5 | 427.90 | 14.65 | 6.25 | 52.1 | 8.40 | 0.34 | 29.0 |
1260A-47R-5, 143–145 | 431.31 | 15.75 | 5.26 | 43.8 | 10.49 | 0.39 | 31.7 |
1260B-36R-6, 14–15 | 432.54 | 15.41 | 5.33 | 44.4 | 10.08 | 0.40 | 29.2 |
1260B-36R-6, 91–92 | 433.31 | 12.35 | 11.58 | 96.4 | 0.77 | 0.03 | 35.6 |
1260A-48R-1, 2–3 | 433.52 | 15.56 | 4.81 | 40.1 | 10.75 | 0.41 | 30.3 |
1260A-48R-3, 0–2 | 436.40 | 13.06 | 10.31 | 85.9 | 2.75 | 0.12 | 27.0 |
1260A-48R-3, 111–112 | 437.51 | 14.48 | 5.50 | 45.8 | 8.98 | 0.35 | 30.2 |
1260B-37R-5, 0–5 | 440.50 | 15.13 | 6.11 | 50.9 | 9.02 | 0.35 | 29.6 |
1260A-48R-6, 99–100 | 441.67 | 18.05 | 6.37 | 53.1 | 11.68 | 0.41 | 33.0 |
1260A-49R-2, 39–40 | 444.92 | 13.80 | 5.39 | 44.9 | 8.41 | 0.28 | 35.7 |
1260B-38R-2, 0–2 | 445.60 | 15.99 | 7.05 | 58.7 | 8.94 | 0.29 | 35.6 |
1260A-49R-4, 0–2 | 447.45 | 12.88 | 10.75 | 89.5 | 2.13 | 0.07 | 38.2 |
1260A-49R-5, 82–83 | 449.77 | 12.91 | 10.36 | 86.3 | 2.55 | 0.06 | 50.0 |
1260B-38R-CC, 4–5 | 452.33 | 16.76 | 5.72 | 47.6 | 11.04 | 0.39 | 33.4 |
1260A-50R-1, 43–44 | 453.13 | 17.77 | 7.19 | 59.9 | 10.58 | 0.33 | 37.1 |
1260B-39R-2, 0–2 | 455.20 | 16.28 | 8.18 | 68.2 | 8.10 | 0.26 | 35.9 |
1260A-50R-4, 68–69 | 457.88 | 12.30 | 10.68 | 89.0 | 1.62 | 0.04 | 52.0 |
1260A-50R-5, 0–2 | 458.70 | 15.07 | 8.96 | 74.7 | 6.11 | 0.20 | 36.6 |
1260A-50R-7, 29–30 | 461.49 | 14.41 | 8.85 | 73.7 | 5.56 | 0.23 | 28.1 |
1260B-39R-7, 7–8 | 462.77 | 56.69 | 0.79 | 6.6 | 55.90 | 0.80 | 81.5 |
1260A-51R-4, 12–13 | 466.60 | 12.55 | 5.15 | 42.9 | 7.40 | 0.26 | 33.3 |
1260A-51R-5, 4–5 | 468.02 | 12.53 | 10.36 | 86.3 | 2.17 | 0.05 | 47.8 |
1260A-51R-5, 146–148 | 469.44 | 15.79 | 8.04 | 66.9 | 7.75 | 0.26 | 35.5 |
1260B-40R-CC, 15–16 | 470.90 | 14.61 | 10.03 | 83.5 | 4.58 | 0.12 | 44.7 |
1260A-52R-2, 29–30 | 473.39 | 12.46 | 10.55 | 87.9 | 1.91 | 0.05 | 43.8 |
1260B-41R-2, 0–2 | 474.20 | 14.02 | 5.18 | 43.1 | 8.84 | 0.27 | 38.4 |
1260A-52R-4, 0–2 | 476.08 | 13.08 | 9.74 | 81.1 | 3.34 | 0.17 | 23.1 |
1260A-52R-4, 50–51 | 476.58 | 16.09 | 7.01 | 58.4 | 9.08 | 0.31 | 34.3 |
1260B-41R-4, 18–19 | 477.38 | 16.11 | 7.16 | 59.7 | 8.95 | 0.32 | 33.0 |
1260B-42R-1, 29–30 | 482.59 | 7.06 | 5.44 | 45.3 | 1.62 | 0.06 | 29.5 |
1260A-53R-1, 143–145 | 482.73 | 7.23 | 5.19 | 43.2 | 2.04 | 0.06 | 41.8 |
1260A-53R-1, 145–146 | 482.75 | 6.84 | 5.38 | 44.9 | 1.46 | 0.04 | 40.7 |
Unit V (silty calcareous claystone): |
|
|
|
|
|
||
1260A-53R-2, 66–67 | 483.46 | 1.51 | 1.06 | 8.8 | 0.45 | 0.01 | 37.2 |
1260B-42R-2, 138–139 | 484.96 | 1.59 | 1.03 | 8.6 | 0.56 | 0.03 | 20.3 |
1260B-42R-3, 21–22 | 485.18 | 1.43 | 0.93 | 7.8 | 0.50 | 0.03 | 21.1 |
1260A-54R-1, 149–150 | 489.39 | 1.57 | 1.09 | 9.1 | 0.48 | 0.02 | 29.5 |
1260B-43R-2, 0–2 | 489.40 | 1.65 | 0.01 | 0.1 | 1.64 | 0.03 | 56.2 |
1260A-54R-2, 70–71 | 490.10 | 1.47 | 1.01 | 8.4 | 0.46 | 0.01 | 44.7 |
1260B-44R-1, 88–89 | 492.78 | 1.80 | 1.32 | 11.0 | 0.48 | 0.03 | 19.1 |
1260B-44R-2, 0–2 | 493.37 | 1.43 | 1.02 | 8.5 | 0.41 | 0.02 | 19.5 |
1260B-45R-1, 80–81 | 497.30 | 1.68 | 1.07 | 8.9 | 0.61 | 0.03 | 21.5 |
1260B-45R-1, 148–150 | 497.98 | 1.41 | 1.00 | 8.4 | 0.41 | 0.03 | 17.6 |
1260B-46R-2, 80–81 | 503.80 | 1.53 | 1.11 | 9.3 | 0.42 | 0.03 | 18.4 |
1260B-46R-2, 145–150 | 504.45 | 1.68 | 1.02 | 8.5 | 0.66 | 0.04 | 20.3 |
1260B-46R-4, 60–61 | 506.60 | 1.95 | 1.29 | 10.8 | 0.66 | 0.04 | 20.6 |
Notes: TC = total carbon, IC = inorganic carbon, TOC = total organic carbon. Atomic C/N ratios are calculated from concentrations of organic carbon and total nitrogen.