Table T16. Total carbon, inorganic carbon, carbonate, total organic carbon, and total nitrogen concentrations and carbon/nitrogen ratios, Site 1258.
Hole, core, section,
interval (cm)
Depth
(mbsf)
TC
(wt%)
IC
(wt%)
CaCO3
(wt%)
TOC
(wt%)
N
(wt%)
C/N
(atomic)
207-






Unit I (nannofossil ooze):




1258B-1R-1, 38–39 0.38
6.96 58.0


1258A-1R-2, 120–121 2.70 7.47 7.35 61.2 0.12 0.02 8.5
1258B-1R-3, 38–39 3.38
7.59 63.2


1258A-1R-4, 40–41 4.90
6.59 54.9


1258A-2R-1, 90–91 6.00
8.49 70.7


Unit II (nannofossil chalk):




1258B-1R-5, 134–135 7.34
6.11 50.9


1258A-2R-3, 90–91 9.00 9.70 9.75 81.2
0.01
1258A-2R-5, 45–46 11.25
9.15 76.2


1258A-3R-1, 36–37 14.56
8.37 69.7


1258B-2R-1, 52–53 14.62
9.63 80.2


1258A-3R-3, 35–36 17.55
9.52 79.3


1258A-3R-5, 35–36 20.55 8.77 8.84 73.7
0.01
1258A-4R-1, 80–81 24.60
8.73 72.7


1258B-3R-3, 73–74 26.83
8.32 69.3


1258A-4R-3, 79–81 27.59 8.15 8.20 68.3


1258B-3R-5, 73–74 29.83
8.01 66.7


1258A-4R-5, 44–45 30.24
7.75 64.5


1258B-4R-1, 80–81 32.90
8.98 74.8


1258A-5R-1, 30–32 33.50
7.00 58.3


1258B-4R-2, 80–81 34.40
3.52 29.3


1258A-5R-3, 30–32 36.50 6.03 6.04 50.3
0.02
1258B-4R-4, 128–129 37.88
6.08 50.6


1258B-5R-1, 15–16 41.25
7.88 65.6


1258A-6R-1, 34–35 43.14
7.98 66.5


1258A-6R-1, 122–124 44.02
6.93 57.7


1258B-5R-3, 16–17 44.26 7.49 7.40 61.6 0.09

1258A-6R-3, 28–29 46.08 5.91 5.86 48.9 0.05 0.01 4.6
1258B-5R-5, 26–27 47.36
6.48 53.9


1258A-6R-4, 84–85 48.14
6.02 50.2


1258B-6R-1, 34–35 51.14
4.74 39.5


1258A-7R-1, 28–29 52.78
5.40 45.0


1258A-7R-2, 26–27 53.96
5.93 49.4


1258B-6R-4, 12–13 55.42 5.43 5.32 44.3 0.11 0.13 1.0
1258A-7R-4, 37–39 57.07 4.29 4.31 35.9
0.01
1258B-6R-6, 32–33 58.62
7.98 66.4


1258B-7R-1, 32–33 60.82
5.20 43.3


1258B-7R-2, 32–33 62.32 5.83 6.13 51.0 0.00 0.01
1258A-8R-3, 110–111 66.27
3.96 33.0


1258A-8R-3, 129–130 66.46 6.14 6.21 51.7
0.03
1258B-7R-5, 32–33 66.82
5.64 47.0


1258B-8R-2, 75–76 72.35
3.72 31.0


1258B-8R-4, 60–61 75.20 4.78 4.73 39.4 0.05 0.01 6.4
1258B-8R-5, 23–24 76.33
5.98 49.8


1258A-9R-4, 126–127 77.66
6.35 52.9


1258A-9R-5, 43–44 78.33 3.26 3.32 27.7 0.00 0.04
1258B-9R-1, 66–67 80.36
4.83 40.2


1258B-9R-1, 89–90 80.59
5.45 45.4


1258B-9R-2, 66–67 81.86 4.04 3.90 32.5 0.14 0.01 12.6
1258A-10R-2, 37–38 83.47
4.98 41.5


1258B-9R-3, 89–90 83.59
4.90 40.8


1258B-9R-4, 66–67 84.86
4.43 36.9


1258B-9R-5, 99–100 86.69
4.51 37.6


1258A-10R-6, 24–25 89.34 6.38 5.90 49.2 0.48 0.03 19.0
1258B-10R-1, 90–91 90.20
6.14 51.1


1258A-11R-1, 89–90 92.19 4.35 4.36 36.3
0.03
1258B-10R-4, 108–109 94.88 5.62 5.45 45.4 0.17 0.01 14.8
1258B-10R-6, 58–59 97.38
3.66 30.5


1258A-11R-5, 71–72 98.01
5.14 42.8


1258B-11R-1, 96–97 99.96
3.14 26.1


1258A-12R-1, 40–41 101.30
5.09 42.4


1258B-11R-4, 76–77 104.26
5.73 47.8


1258A-12R-3, 40–41 104.30 5.13 5.11 42.6 0.02 0.02 1.7
1258B-11R-6, 10–11 106.60 4.87 4.84 40.3 0.03 0.02 1.9
1258A-12R-5, 40–41 107.30
5.03 41.9


1258A-12R-7, 40–41 110.30
5.56 46.3


1258B-12R-2, 53–54 110.63
5.21 43.4


1258A-13R-2, 57–59 112.57
3.50 29.1


1258B-12R-4, 84–85 113.94 5.97 5.90 49.2 0.07 0.01 8.6
1258A-13R-4, 57–59 115.57 6.02 6.03 50.2
0.03
1258B-12R-6, 57–58 116.67
5.76 48.0


1258A-13R-6, 57–59 118.57
3.69 30.8


1258B-13R-1, 69–70 118.89





1258C-1R-1, 50–51 120.50
5.88 49.0


1258A-14R-1, 48–49 120.58
2.94 24.5


1258B-13R-3, 76–77 121.96
2.99 24.9


1258C-1R-3, 50–52 123.50
6.21 51.8


1258B-13R-4, 95–96 123.65 6.25 6.16 51.4 0.09 0.01 7.4
1258B-13R-5, 30–31 124.50
6.82 56.8


1258A-14R-4, 48–49 125.08 7.36 7.29 60.7 0.07 0.03 2.6
1258C-1R-5, 50–52 126.50
5.77 48.1


1258B-13R-6, 96–97 126.66
6.40 53.3


1258B-13R-7, 14–15 127.34
6.33 52.8


1258B-14R-1, 94–95 128.84
4.42 36.8


1258C-1R-7, 50–52 129.50
4.64 38.6


1258C-2R-1, 50–51 129.90
5.27 43.9


1258A-15R-1, 95–96 130.65
7.36 61.3


1258C-2R-2, 40–41 131.30
2.47 20.6


1258C-2R-2, 50–51 131.40
3.54 29.5


1258B-14R-3, 58–59 131.48 3.36 2.70 22.5 0.66 0.01 64.1
1258C-2R-2, 102–103 131.92
1.73 14.4


1258A-15R-3, 95–96 133.65 7.17 7.19 59.9 0.00 0.04
1258C-2R-4, 50–51 134.40
5.87 48.9


1258B-14R-5, 93–94 134.83
6.06 50.5


1258C-2R-5, 60–61 136.00
7.16 59.6


1258B-14R-6, 74–75 136.14
5.92 49.3


1258C-2R-6, 50–51 137.40
6.67 55.5


1258B-15R-1, 88–88 138.38
6.09 50.7


1258A-16R-1, 77–78 140.17
7.26 60.5


1258B-15R-3, 96–96 141.46 7.43 7.18 59.9 0.25

1258A-16R-3, 77–78 143.17
8.04 66.9


1258B-15R-5, 12–12 143.62
7.15 59.6


1258A-16R-5, 77–78 146.17 7.29 6.93 57.7 0.36 0.02 17.0
1258B-15R-7, 5–5 146.55
6.20 51.6


1258B-16R-2, 8–9 148.78
7.33 61.0


1258A-16R-7, 60–61 148.95
6.87 57.2


1258A-17R-1, 49–50 149.49
6.73 56.1


1258B-16R-4, 8–9 151.78 7.44 7.20 60.0 0.24 0.02 18.3
1258A-17R-3, 49–50 152.54 5.72 5.80 48.3
0.07
1258B-16R-6, 37–38 155.07
7.03 58.6


1258A-17R-5, 49–50 155.54
6.27 52.2


1258A-17R-7, 49–50 158.04
6.81 56.7


1258A-18R-1, 94–96 159.64
6.70 55.8


1258B-17R-3, 10–11 160.00
6.03 50.2


1258A-18R-3, 89–90 162.59 6.53 6.53 54.4
0.04
1258B-17R-5, 6–7 162.76
7.21 60.1


1258A-18R-5, 63–64 165.33
6.27 52.2


1258B-17R-7, 6–7 165.76
6.52 54.3


1258B-18R-1, 7–8 166.57
7.14 59.5


1258A-18R-7, 29–30 167.99
5.08 42.4


1258A-19R-1, 55–56 168.95
6.23 51.9


1258B-18R-3, 7–8 169.57
7.42 61.9


1258B-18R-5, 7–8 172.57
6.56 54.6


1258A-19R-4, 50–51 173.40 2.84 2.84 23.6
0.06
1258A-19R-6, 4–5 175.10
5.19 43.2


1258A-19R-6, 56–57 175.62





1258B-19R-1, 24–26 176.34
6.22 51.8


1258A-19R-6, 147–148 176.53





1258B-19R-3, 10–12 179.20
6.74 56.2


1258A-20R-2, 70–71 180.30
6.20 51.7


1258B-19R-5, 4–5 182.14
7.11 59.3


1258A-20R-3, 110–111 182.20 6.56 6.55 54.5 0.01 0.04 0.2
1258A-20R-4, 111–112 183.71
7.00 58.3


1258B-20R-1, 49–50 186.19
6.61 55.1


1258B-20R-2, 49–50 187.69
5.12 42.7


1258A-21R-1, 107–108 188.77
6.87 57.2


1258B-20R-4, 48–49 190.68
6.16 51.3


1258B-20R-CC, 9–10 191.96
5.52 45.9


1258A-21R-4, 65–66 192.85 5.40 5.33 44.4 0.07 0.02 4.5
1258B-21R-1, 40–41 195.60
2.99 24.9


1258B-21R-1, 123–124 196.43
0.56 4.7


1258B-21R-2, 20–21 196.66
0.03 0.2


1258B-21R-2, 51–52 196.97
1.60 13.4


1258B-21R-2, 53–54 196.99
5.55 46.2


1258B-21R-2, 98–99 197.44
3.61 30.1


1258A-22R-3, 42–42 200.52
5.75 47.9


1258A-22R-3, 70–71 200.80 4.42 4.41 36.7 0.01 0.03 0.5
1258B-22R-1, 53–54 205.23
4.87 40.6


1258B-22R-3, 82–84 208.52
7.52 62.7


1258A-23R-3, 53–54 210.23
5.96 49.6


1258A-23R-3, 79–80 210.49 4.56 4.32 36.0 0.24 0.03 9.0
1258B-22R-5, 61–62 211.31
5.87 48.9


1258B-23R-2, 54–55 216.44
7.33 61.1


1258A-24R-1, 42–43 216.72
4.66 38.8


1258B-23R-3, 90–91 218.30
3.98 33.1


1258B-23R-5, 55–56 220.95
6.02 50.1


1258A-24R-5, 117–118 223.47 6.47 6.40 53.3 0.07 0.03 2.7
1258B-24R-1, 76–77 224.86
4.37 36.4


1258A-25R-1, 88–89 226.88
7.11 59.2


1258B-24R-3, 98–99 228.08
4.55 37.9


1258B-24R-6, 100–101 232.09
4.71 39.3


1258A-25R-6, 109–110 234.59 5.56 5.47 45.6 0.09 0.04 3.0
1258B-25R-1, 96–97 234.66
5.11 42.6


1258B-25R-1, 96–97 234.66





1258B-25R-3, 73–74 237.43
4.07 33.9


1258B-25R-3, 73–74 237.43





1258A-26R-3, 80–81 239.40 7.18 7.14 59.5 0.04 0.03 1.5
1258B-25R-6, 80–81 242.00
6.49 54.1


1258B-25R-6, 80–81 242.00





1258B-25R-7, 1–2 242.71
6.86 57.1


1258B-25R-7, 1–2 242.71





1258A-26R-6, 60–61 243.10
4.80 40.0


1258A-27R-3, 32–32 248.62
7.74 64.5


1258A-27R-3, 88–88 249.18 5.43 5.40 45.0 0.03 0.03 1.1
1258A-27R-4, 29–29 250.09
5.01 41.7


1258A-27R-4, 142–142 251.22
3.99 33.2


1258A-28R-1, 67–69 255.57
7.92 66.0


1258A-28R-3, 81–83 258.71 8.29 8.23 68.6 0.06 0.02 3.7
1258A-28R-5, 79–80 261.69
7.54 62.8


1258B-29R-2, 22–23 264.32
7.85 65.4


1258B-29R-2, 22–23 264.32





1258A-29R-1, 93–94 265.53
8.74 72.8


1258A-29R-2, 94–95 267.04 7.74 7.71 64.2 0.03 0.02 1.6
1258A-29R-4, 96–97 270.06





1258B-30R-1, 18–19 272.38
8.53 71.1


1258A-29R-6, 92–93 272.84





1258A-30R-1, 59–60 274.79
7.84 65.3


1258B-30R-3, 72–73 275.92
7.84 65.3


1258B-30R-5, 5–6 278.25
8.89 74.1


1258A-30R-3, 108–109 278.28 8.64 8.54 71.2 0.10 0.03 4.1
1258B-30R-7, 5–6 281.25
9.26 77.1


1258B-31R-1, 6–6 281.96
7.43 61.9


1258A-31R-1, 97–98 284.87
7.81 65.0


1258B-31R-3, 5–5 284.95
8.60 71.7


1258A-31R-3, 93–94 287.83 8.41 8.41 70.1
0.02
1258B-31R-5, 9–9 287.99
7.29 60.7


1258A-31R-5, 67–68 290.57
7.22 60.1


1258B-32R-1, 31–32 291.81
7.23 60.2


1258A-32R-1, 57–57.5 294.07
8.21 68.4


1258B-32R-3, 4–5 294.54
7.58 63.1


1258A-32R-3, 57–57.5 297.07 7.06 6.98 58.2 0.08 0.02 4.3
1258B-32R-5, 5–6 297.55
6.74 56.1


1258A-32R-5, 57–57.5 300.07
7.90 65.8


1258B-32R-7, 12–13 300.62
8.12 67.7


1258A-33R-1, 95–96 304.05
6.18 51.5


1258A-33R-3, 78–79 306.88 6.27 6.27 52.2
0.02
1258A-33R-5, 58–59 309.68
6.69 55.7


1258B-34R-1, 41–42 311.21
7.78 64.8


1258A-33R-7, 58–59 312.68
7.84 65.3


1258B-34R-3, 5–6 313.85
8.37 69.7


1258A-34R-2, 91–92 315.21 7.63 7.54 62.8 0.09 0.02 4.6
1258B-34R-5, 14–15 316.94
6.45 53.7


1258A-34R-4, 95–96 318.25
6.40 53.3


1258B-34R-7, 7–8 319.87
6.93 57.7


1258B-35R-1, 70–71 321.10
6.13 51.1


Unit III (clayey nannofossil chalk):




1258A-35R-1, 114–115 323.54 7.68 7.45 62.1 0.23 0.02 16.5
1258A-35R-3, 12–13 325.52
4.26 35.5


1258B-36R-1, 100–101 331.10
3.64 30.3


1258B-36R-2, 25–26 331.85
3.65 30.4


1258B-36R-3, 70–71 333.80
4.44 37.0


1258A-36R-2, 95–96 334.45
3.87 32.2


1258B-36R-4, 37–38 334.67
4.34 36.2


1258A-36R-3, 88–89 335.88 3.10 2.76 23.0 0.34 0.02 16.6
1258A-36R-5, 95–96 338.95
3.10 25.8


1258A-37R-2, 80–83 344.00 4.43 4.37 36.4 0.06 0.01 11.2
1258A-37R-3, 82–83 345.52
2.84 23.6


1258B-38R-1, 69–70 349.99
3.08 25.6


1258B-38R-2, 109–110 351.89
1.90 15.8


1258B-39R-3, 60–61 362.60
2.00 16.7


1258A-39R-3, 81–82 363.94 4.50 4.36 36.3 0.14 0.02 7.1
1258B-39R-6, 60–61 367.10
4.73 39.4


1258B-40R-2, 17–18 369.77
4.46 37.2


1258A-40R-1, 80–81 371.30
5.51 45.9


1258A-40R-3, 140–141 374.90 3.92 3.76 31.4 0.16 0.03 7.5
1258A-41R-1, 32–33 380.52 3.50 3.38 28.2 0.12 0.01 13.1
1258A-41R-2, 72–73 382.42
2.14 17.8


1258B-42R-1, 54–55 384.34
4.44 37.0


1258A-41R-4, 15–16 384.70
3.15 26.3


1258B-43R-1, 21–22 388.01
3.31 27.6


Unit IV (laminated black shale):




1258A-42R-1, 134–135 391.14 15.57 6.18 51.5 9.39 0.32 34.3
1258B-43R-3, 64–65 391.34
2.91 24.2


1258A-42R-3, 23–24 392.92 15.25 5.66 47.1 9.59 0.34 32.8
1258C-15R-3, 34–35 393.11 4.44 4.32 36.0 0.12

1258B-44R-1, 21–22 393.71
6.09 50.7


1258C-15R-3, 121–122 393.98 13.68 7.45 62.1 6.23 0.23 31.0
1258B-44R-2, 32–33 394.48
5.32 44.3


1258B-44R-2, 53–54 394.69
4.52 37.7


1258B-44R-2, 66–67 394.82 10.27 4.07 33.9 6.20 0.22 32.9
1258C-16R-1, 130–132 395.70 15.16 2.60 21.7 12.56 0.49 30.1
1258A-42R-5, 94–95 396.16 15.08 9.69 80.7 5.39 0.17 38.1
1258B-44R-4, 75–76 397.46 15.40 6.62 55.1 8.78 0.33 31.0
1258A-42R-6, 108–109 397.62 13.95 0.49 4.1 13.46 0.47 33.3
1258A-43R-1, 95–96 400.35 11.85 11.47 95.6 0.38 0.02 24.2
1258B-45R-3, 109–110 400.44 13.88 10.47 87.2 3.41 0.12 33.1
1258C-17R-1, 107–108 400.47 15.24 0.73 6.1 14.51 0.41 41.5
1258A-43R-2, 9–10 400.77 14.08 8.57 71.4 5.51 0.22 29.7
1258A-43R-2, 64–65 401.32 17.53 5.64 46.9 11.89 0.45 30.7
1258B-45R-4, 116–117 401.92 24.64 1.05 8.7 23.59 0.70 39.4
1258B-46R-2, 56–57 404.30 30.93 2.80 23.4 28.13 0.89 37.0
1258C-18R-1, 124–125 405.34 14.85 4.54 37.8 10.31 0.37 32.5
1258B-46R-3, 38–39 405.61 13.70 9.79 81.5 3.91 0.13 35.1
1258C-19R-1, 95–96 410.05 10.72 3.30 27.5 7.42 0.26 33.6
1258C-20R-1, 58–59 414.28 3.55 0.93 7.7 2.62 0.11 28.0
1258C-21R-1, 15–16 418.85 4.90 1.85 15.4 3.05 0.13 26.8
1258A-45R-1, 45–45 419.15 18.82 3.97 33.1 14.85 0.61 28.1
1258A-45R-3, 122–122 422.56 12.60 10.81 90.1 1.79 0.10 21.7
1258C-22R-1, 58–59 423.88 14.48 4.88 40.6 9.60 0.37 30.7
1258A-46R-1, 103–104 424.33 16.67 4.31 35.9 12.36 0.44 32.8
1258B-51R-1, 18–19 426.48 12.38 11.39 94.9 0.99 0.05 22.5
1258A-46R-4, 28–29 427.60 17.01 7.49 62.4 9.52 0.31 35.4
1258B-51R-2, 40–41 428.12 17.55 5.92 49.4 11.63 0.41 32.9
1258A-47R-1, 32–33 428.62 15.39 7.88 65.6 7.51 0.27 32.5
1258C-23R-1, 41–43 428.71 17.80 5.66 47.1 12.14 0.41 34.4
1258A-47R-2, 36–37 430.16 17.68 5.90 49.2 11.78 0.40 34.5
1258B-52R-1, 89–90 432.79 16.73 7.09 59.0 9.64 0.35 31.7
1258C-24R-1, 41–43 433.31 16.68 5.96 49.7 10.72 0.36 34.8
1258A-48R-1, 48–48 433.38 15.67 6.05 50.4 9.62 0.37 30.2
1258B-52R-3, 90–91 434.91 16.68 6.63 55.2 10.05 0.39 30.4
1258A-48R-3, 42–42 436.21 13.38 6.59 54.9 6.79 0.24 32.4
1258B-53R-1, 45–46 436.35 12.65 7.28 60.7 5.37 0.21 30.1
1258C-25R-1, 96–97 438.86 16.17 6.16 51.3 10.01 0.33 35.1
1258A-49R-1, 109–110 438.99 12.62 10.39 86.5 2.23 0.14 18.6
1258A-49R-2, 108–109 440.46 15.40 5.92 49.3 9.48 0.35 31.4
1258B-54R-1, 53–54 442.03 12.31 10.47 87.2 1.84 0.07 30.0
1258A-49R-3, 126–127 442.10 12.40 8.07 67.2 4.33 0.16 31.5
1258C-26R-1, 2–3 442.52 15.51 5.52 46.0 9.99 0.33 35.1
1258A-50R-1, 79–79 443.29 7.93 4.73 39.4 3.20 0.13 28.9
1258A-50R-2, 79–79 444.55 8.10 2.12 17.7 5.98 0.26 26.9
1258B-54R-3, 54–55 444.92 14.56 5.63 46.9 8.93 0.33 31.7
1258B-55R-1, 49–50 445.99 14.05 5.25 43.7 8.80 0.32 32.6
1258C-27R-1, 108–109 448.58 9.80 4.16 34.6 5.64 0.19 35.2
1258B-55R-4, 25–26 448.82 11.42 10.34 86.1 1.08 0.05 27.9
1258C-27R-2, 117–118 450.08 11.03 8.83 73.5 2.20 0.12 21.4
1258B-56R-1, 44–45 451.64 10.51 4.74 39.5 5.77 0.23 29.7
1258C-28R-1, 75–76 452.55 7.43 3.81 31.7 3.62 0.13 31.9
1258B-56R-2, 54–55 452.81 12.23 10.66 88.8 1.57 0.06 29.3
Unit V (clayey chalk with organic matter):




1258C-28R-2, 39–40 453.69 7.25 1.99 16.6 5.26 0.20 30.1
1258B-57R-3, 30–31 458.50 7.06 1.69 14.1 5.37 0.24 26.0
1258C-29R-2, 130–131 459.60 7.03 1.61 13.4 5.42 0.21 30.1
1258C-30R-2, 87–88 463.49 6.54 2.74 22.9 3.80 0.18 24.3
1258C-30R-3, 128–130 465.40 5.70 1.77 14.8 3.93 0.17 27.7
1258C-31R-1, 100–101 467.40 6.52 2.54 21.2 3.98 0.18 26.5
1258C-31R-2, 26–27 468.16 6.04 1.50 12.5 4.54 0.20 26.9
1258C-31R-2, 74–75 468.64 37.41 0.78 6.5 36.63 0.94 45.3
1258C-33R-1, 31–32 476.31 6.23 0.72 6.0 5.51 0.23 28.5
1258C-33R-2, 76–77 478.26 6.31 1.64 13.6 4.67 0.22 25.1
1258C-34R-1, 91–92 481.61 3.17 1.29 10.7 1.88 0.12 18.2
1258C-34R-3, 63–64 484.33 5.11 2.92 24.4 2.19 0.13 20.2

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.